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TRAIN-WAY > RL CHEM 1 > Flashcards

RL CHEM 1 Flashcards

1
Q

●The element having strongest intermolecular forces of attraction—

A

Iodine

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2
Q

●When substance moves from a solid to a liquid stateall of the following changes occur except:—

A

Kinetic energy of molecules decrease

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3
Q

●When the atoms of third layer are arranged in such away that they directly lie above the atoms of firstlayer, then this arrangement is called:—

A

ABAB(hexagonal)

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4
Q

●Most of thermodynamic parameters are:—

A

State functions

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5
Q

●The correct set of four quantum numbers for thevalence electron of rubidium atoms (Z = 37) is:—

A

5, 0, 0, +1/2

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6
Q

●The atomic radius of the elements ____ as one movesdown the first group of the periodic table.—

A

Increases

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7
Q

●Beryllium Sulphate is less soluble in water due to: —

A

High inflammable energy

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8
Q

●What is the name of that system, which usesradioactivity to decide the period of materials of-pre-historic period?—

A

Carbon Dating

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9
Q

●The anode in a dry cell consists of:—

A

Zinc

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10
Q

●Cement is made hard with: —

A

Hydration anddissociation of water

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11
Q

●What happens when a chemical bond is formed? —

A

Energy is always absorbed

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12
Q

●Cane sugar is a—

A

Carbohydrate

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13
Q

●In which state maximum iron ore is found?—

A

Fe2O3

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14
Q

“●”“All the four quantum numbers of two electrons in anatom are not the same.”” It is the law of: —”

A

Exclusion Principle of Pauli

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15
Q

●Commercial nitric acid is coloured because itcontains dissolved?—

A

Nitrous Oxide

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16
Q

●Fertiliser having high nitrogen content is:—

A

Ammonium Nitrate

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17
Q

●Where does the oxygen that keeps us alive comefrom: —

A

Water

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18
Q

●The gas used for artificial fruit ripening of green fruitis: —

A

Ethylene

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19
Q

●The three elements most needed in commonfertilizers are:—

A

Nitrogen, Potassium andPhosphorus

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20
Q

●Which metal pollutes the air of a city having largenumber of automobiles?—

A

Lead

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21
Q

●Which gas is present under pressure in soft drinks?—

A

Carbon dioxide

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22
Q

●The substance which does not expand on going fromliquid slate to solid state is:—

A

Type Metal

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23
Q

●The radio-active element used in heart pacemakersis:—

A

Uranium

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24
Q

●The element which is commonly used in nuclear forproducing electricity by nuclear fission is:—

A

Uranium

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25
Q

●What is used as a lubricant in heavy machines?—

A

Graphite

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26
Q

●What is used to iodize common salt?—

A

PotassiumIodate

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27
Q

lMilk is a colloidal system in which:—

A

Fat is dispersedin water

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28
Q

●The enzyme that converts glucose to ethyl alcohol is:—

A

Zymase

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29
Q

●Silk fibre chemically is:—

A

Protein

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30
Q

●Who developed Hydrogen Bomb?—

A

Edward Teller

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31
Q

●When there are two electrons in the same orbital,they have: —

A

Opposite spin

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32
Q

●Galvanization is the:—

A

deposition of zinc on iron

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33
Q

●Fermentation of milk to curd is due to:—

A

Lactobacillus

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34
Q

●By which organic compound all the oils are known?—

A

Hydrocarbon

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35
Q

●The atomic number of carbon is 6 and its atomicmass is 12. How many are there protons in thenucleus of carbon?—

A

6

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36
Q

●Who developed atom bomb?—

A

J. RobertOpenheimer

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37
Q

●The major harmful gas emitted by automobile vehiclewhich causes air pollution is:—

A

Carbon dioxide

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38
Q

The acid used in lead storage cells is:—

A

Sulphuric Acid

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39
Q

●Milk tastes sour when kept in the open for sometimedue to the formation of:—

A

Lactic Acid

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40
Q

●What is the most commonly used substance influorescent tubes?—

A

Mercury vapour and argon

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41
Q

“●What is ““milk of magnesia”” chemically?—”

A

Magnesium Hydroxide

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42
Q

●Soap is prepared by boiling caustic soda with:—

A

Fats

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43
Q

●Bronze is an alloy of:—

A

Copper and Tin

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44
Q

●The natural source of hydrocarbon is:—

A

Crude Oil

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45
Q

●What is chiefly present in LPG (Liquefied PetroleumGas)? —

A

Butane

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46
Q

●Humburger effect is otherwise known as:—

A

ChlorideShift

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47
Q

●Bauxite is an alloy of which of the following metals?—

A

Aluminium

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48
Q

●Nucleus of an atom consists of:—

A

Proton and Neutron

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49
Q

●Galvanized iron is made by coating iron with:—

A

Zinc

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50
Q

●Isobars are lines joining places having equal:—

A

Pressure

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51
Q

●Global warming is mainly due to the accumulationof:—

A

Carbon dioxide

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52
Q

●The most suitable vessel for storing concentratedsulphuric acid is:—

A

Glass Vessel

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53
Q

●What is the element that is in the highest percentagein the composition of the earth?—

A

Oxygen

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54
Q

●The advantage of detergents over soaps is: —

A

Detergents give lather even with hard water

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55
Q

●The fundamental particles present in the nucleus ofan atom are:—

A

Proton, Neutron

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56
Q

●Bleaching action of moist sulphur dioxide is becauseof its: —

A

Oxidizing property

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57
Q

●The long range potential of nuclear energy in Indiadepends on its reserves of:—

A

Uranium

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58
Q

●The ratio of pure gold in 18 carat gold is:—

A

75%

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59
Q

●Diamond is harder than graphite because of:—

A

Difference in layers of atoms

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60
Q

●Gobar gas contains mainly:—

A

Methane

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61
Q

●The gas used for artificial fruit ripening of green fruitis: —

A

Ethylene

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62
Q

●What is the element required for solar energyconversion? —

A

Silicon

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63
Q

●Liquid crystal was discovered by:—

A

Fredrick Reinter

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64
Q

●If electricity is passed through CuSO4 solution byusing Pt electrode then which of the followingpossible change occurs? —

A

Colour of the solutionbecomes fade

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65
Q

●Two fundamental ways to transfer energy are:—

A

Heat and Work

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66
Q

●Stronger the oxidizing agent greater is the: —

A

Reduction potential

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67
Q

●What happens when common salt is dissolved inwater?—

A

Boiling point of water increases

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68
Q

●Which one is a conductor but is not malleable?—

A

Graphite

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69
Q

●Every sample of matter with uniform properties andfixed composition is called:—

A

Phase

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70
Q

●Which has maximum oxidation number?—

A

Mn

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71
Q

●Homogeneous mixture of two or more than twocompounds is called:—

A

Solution

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72
Q

●The component of solution which is in smalleramount is called:—

A

Solute

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73
Q

●The density of water may be:—

A

Greater than that ofice

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74
Q

●Forces of attraction which may be present between allkinds of atoms and molecules are:—

A

Van der Waal

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75
Q

●The quantity of heat required to convert one mole ofliquid into its vapours at its boiling point is calledmolar heat of: —

A

Vaporization

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76
Q

●Solution with maximum concentration of solute atgiven temperature is called:—

A

Saturated solution

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77
Q

●The molal boiling point constant is the ration of theelevation of boiling point to:—

A

Molality

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78
Q

●In an electrolytic cell current flows?—

A

From anode tocathode outside the cell

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79
Q

●Steam causes more sever burn than the boiling waterbecause it possesses because of the:—

A

Latent heatof vaporization

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80
Q

●Water has maximum density at:—

A

40 C

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81
Q

●In a galvanic cell: —

A

Chemical energy is convertedinto electricity

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82
Q

●Number of moles in 1 kg of solvent is called:—

A

Molality

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83
Q

●In partially miscible liquids the two layers are: —

A

saturated solutions of each liquid

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84
Q

●If the volume of solution is equal to sum of volumes ofits all components then the solution: —

A

will be anideal solution

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85
Q

●The degree of dissociation of week electrolyteincreases as: —

A

Dilution increases

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86
Q

●Molten NaCl conducts electricity due to the presenceof: —

A

Free ions

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87
Q

●The conversion of vapours back into their liquid stateis called: —

A

condensation

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88
Q

●When water freezes at 00 C its density decreases dueto: —

A

the presence of Empty space in thestructure of ice

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89
Q

●Electricity in voltaic cell is produced due to: —

A

Bothoxidation and reduction

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90
Q

●In electrolytic solution conductance of electricity isdue to: —

A

Ions

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91
Q

●In electrolytic cell electricity carries: —

A

Non-spontaneous reaction

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92
Q

●Which one of the following is a correct statement? —

A

Acetic acid is a weak electrolyte

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93
Q

●Reaction at anode is called:—

A

Oxidation

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94
Q

●In an electrolytic cell cathode provides electrons to:—

A

Positive ion

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95
Q

●In Galvanic cell electrons flow from anode to cathodethrough: —

A

External electric circuit

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96
Q

●Decrease in oxidation number is called:—

A

reduction

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97
Q

●For the measurement of standard electrode potentialZn is dipped in:—

A

1 M ZnSO4 solution

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98
Q

●A gas absorbs a photon of 355 nm and emits at twowavelengths. If one of the emissions is at 680 nm,the other is at: —

A

743

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99
Q

●The solution which distils over with change incomposition is: —

A

Zeotropic solution

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100
Q

●Salt bridge transfers:—

A

Ions

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101
Q

●Isotopes differs in:—

A

chemical properties

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102
Q

●The attractive forces between the partial positive endof one molecule and partial negative end of othermolecule are called:—

A

Dipole-dipole forces

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103
Q

●Vapour pressure is not affected by:—

A

Surface area

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104
Q

●Voltaic cell can be recharged by:—

A

by replacingexternal circuit with external source of electricity

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105
Q

●Temperature for the measurement of standardelectrode potential is:—

A

298K

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106
Q

●Electrode potential of Zn: —

A

depends on the natureof the coupled electrode

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107
Q

●List of elements based on hydrogen scale is called: —

A

electrochemical series

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108
Q

●The mass of one mole of electron is:—

A

0.55

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109
Q

●Mixtures which distill over without change incomposition is called:—

A

azeotropic mixture

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110
Q

●The conductivity of strong electrolyte: —

A

Increase ondilution slightly

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111
Q

●The number of atoms in a molecule determines:—

A

atomicity

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112
Q

●Rising of a wetting liquid in a capillary tube is due to:—

A

Adhesive forces

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113
Q

●Which element has same isotopes like palladium?—

A

Calcium

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114
Q

●Water absorber used in combustion analysis is:—

A

Mg(CIO4)2

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115
Q

●A limiting reactant is one which: —

A

gives theminimum amount of the product underconsideration

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116
Q

●Table salt crystallizes with a: —

A

body centered cubiclattice

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117
Q

●Concentration of solute molecule when they are inequilibrium with solid substance at particulartemperature is called: —

A

solubility

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118
Q

●During which process empty spaces between particlesbecome minimum?—

A

Condensation

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119
Q

●When a solution of an electrolyte is heated theconductance of the solution:—

A

Increases becausethe electrolyte is dissociated more

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120
Q

●In the electrolytic cell, flow of electrons is from: —

A

Anode to cathode through internal supply

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121
Q

●The element that act as anode always have _______position in electrochemical cell.—

A

Higher

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122
Q

●Beckmanns apparatus is used to measure:—

A

depression in freezing point

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123
Q

●The determination of correct molecular weight fromRaoult’s law is applicable to:—

A

non volatile solutein a dilute solution

124
Q

In galvanic cell Zn acts as an anode so its value ofstandard reduction potential in comparison tocoupled electrode would be:—

A

Greater

125
Q

●Liquid gets the shape of the container when it ispoured into it. Which one of the following reasonsjustifies it? —

A

Liquid molecules can slide overeach other

126
Q

●Greater value of standard reduction potential greaterwill be tendency:—

A

to get reduced

127
Q

●Greater value of standard reduction potential greaterwill be tendency:—

A

to accept electrons

128
Q

●Boiling point elevations can be measured by: —

A

Landsbergers method

129
Q

●Greater value of standard reduction potential smallerwill be tendency:—

A

to form positive ions

130
Q

●Lead accumulators are:—

A

voltaic cell

131
Q

●In alkaline battery the anode is made up of:—

A

Zn

132
Q

●The strength of solution of an element whoseelectrode potential is to be measured is:—

A

1M

133
Q

●Apparent charge on atom in molecule is:—

A

OxidationNumber

134
Q

●Percentage of sulphuric acid in lead accumulator is:—

A

30%

135
Q

●The half cells are interconnected through:—

A

SaltBridge

136
Q

●The compounds in which water molecules are addedare called:—

A

Hydrates

137
Q

●What is the chemical name for ‘Baking Soda’? —

A

Sodium bicarbonate

138
Q

●Saccharin is made up of:—

A

Toluene

139
Q

●PVC is obtained by the polymerization of:—

A

VinylChloride

140
Q

●The metallic constituents of hard water are:—

A

Calcium, magnesium and iron

141
Q

●The pH of human blood is between:—

A

7.5-8

142
Q

●Aspirin is:—

A

Acetyl Salicilic Acid

143
Q

●Cloud is a colloidal dispersion of:—

A

Water drops in adispersion medium of air

144
Q

●Which variety of coal contains recognizable traces ofthe original plant material?—

A

Peat

145
Q

●Which is the purest form of iron?—

A

Wrought Iron

146
Q

●Which metals forms an amalgam with other metals?—

A

Mercury

147
Q

●Detergents used for cleaning clothes and utensilscontain:—

A

Sulphonates

148
Q

●Radioactive disintegration of uranium ultimatelyresults in formation of:—

A

Lead

149
Q

●What is used in making smoke bombs?—

A

Phosphorus

150
Q

●German silver is an alloy of:—

A

Zinc, Copper andNickel

151
Q

●A metal is exposed to the atmosphere for some time.It becomes coated with green carbonate. Themetal must be: —

A

Copper

152
Q

●A super-cooled liquid is—

A

Glass

153
Q

●If we provide very high amount of heat to a liquid itsboiling point will:—

A

remain constant

154
Q

●Crystallites are present in:—

A

amorphous solids

155
Q

●A solid may be made up of:—

A

Atoms, ions ormolecules

156
Q

●One Faraday of electricity when passed through asolution of copper sulphate deposits:—

A

1 gmequivalent of Cu

157
Q

●The amount of ion discharged during electrolysis isnot directly proportional to:—

A

Resistance

158
Q

●When the sample of copper with zinc impurity is tobe purified by electrolysis, the appropriateelectrodes are Cathode Anode for:—

A

Pure copperImpure sample

159
Q

●A malleable solid is one which can be: —

A

Convertedinto thin sheets

160
Q

●The type of filtering media used for filtrationdepending upon: —

A

Nature of precipitate

161
Q

●A safe and more reliable method for drying thecrystal is: —

A

Vacuum desiccators

162
Q

●Amorphous substances posses: —

A

No sharp meltingpoints

163
Q

●Crystalline solids can be identified easily from their:—

A

sharp melting points

164
Q

●Boiling points of hydrocarbons increase with theincrease in number of carbon atoms. It is mainlydue to: —

A

More strength of London forces

165
Q

●The viscosity of solids is:—

A

infinite

166
Q

●A method of separation of components from itssolution using Distribution law is:—

A

Solventextraction

167
Q

●During the electrolysis of fused NaCl3 which reactionoccurs at anode?—

A

Chloride ions are oxidized

168
Q

●The number of moles of solute per kg of a solvent iscalled its:—

A

Molality

169
Q

●Equal masses of methane and oxygen are mixed inempty container at 250?(c)The fraction of totalpressure exerted by oxygen is:—

A

one / three

170
Q

●Hydration is a process in which:—

A

Both ions andmolecules are surrounded by water molecules

171
Q

●Plasma is used in:—

A

Fluorescent bulb

172
Q

●The molecules of CO2 in dry ice form:—

A

Molecularcrystal

173
Q

●Electrolysis of aqueous HCl solution produces: —

A

H2gas at the cathode

174
Q

●The phenomenon in which a compound exists in twoor more crystalline forms is called:—

A

Polymorphism

175
Q

●Bucky balls is an allotropic from of:—

A

Carbon

176
Q

●ppm means: —

A

parts of solute in one million parts ofsolution

177
Q

●1 molar solution of glucose in water contains weightof glucose:—

A

180g/dm3

178
Q

●Dilution, temperature and nature of electrolyte affectthe:—

A

conductivity of solution

179
Q

●Increasing the temperature of an aqueous solutionwill cause: —

A

Decrease in molarity

180
Q

●Amount of electricity that can deposit 108 gm ofsilver from AgNO3 solution is:—

A

1 faraday

181
Q

●What will be the molarity of a solution containing 5gof sodium hydroxide in 250ml solution?—

A

0.5

182
Q

●Bohr’s model is contradicted by: —

A

Heisenbergsuncertainty principle

183
Q

●Only London dispersion forces are present amongthe: —

A

Molecules of solid iodine

184
Q

●Water of crystallization can be removed by:—

A

heating

185
Q

●Atomic radius can be determined by:—

A

X - raydiffraction

186
Q

●A solution of sodium sulphate in water is electrolysedusing inert electrodes. The products at the cathodeand anode are respectively:—

A

H2 ,O2

187
Q

●The rate constant of a reaction is equal to rate ofreaction: —

A

When concentrations of all reactantsare unity

188
Q

●The number amino acid units for each turn of helixon average are:—

A

27

189
Q

●An electric current is passed through an aqueoussolution of the following. Which one shalldecompose?—

A

AgNO3

190
Q

●Stronger is the oxidizing agent greater is the: —

A

standard reduction potential

191
Q

●The relative lowering of vapour pressure is directlyproportional to molality if the solution is:—

A

dilute

192
Q

●If a physical and chemical change takes place at aconstant pressure then the heat change during theprocess is called:—

A

Enthalpy change

193
Q

●On the electrolysis of aqueous solution of sodiumsulphate, on cathode we get:—

A

H2

194
Q

●Nitrates of which pair gives different products onthermal decomposition?—

A

Li Na

195
Q

●Which is carnalite?—

A

KCI

196
Q

●Isomorphic substances have: —

A

Different physicaland chemical properties

197
Q

●The pressure during the molar heat of fusion is kept:—

A

1 atmosphere

198
Q

●Conductivity of a solution is directly proportional to:—

A

Number of ions

199
Q

●Under a given set of experimental conditions, withincrease in the concentration of the reactants therate of a chemical reaction:—

A

increases

200
Q

●During the electrolysis of an electrolyte, the numberof ions produced, is directly proportional to the:—

A

Quantity of electricity passed

201
Q

●Electrolytic conduction differs from metallicconduction in that in the case of electrolyticconduction. Which of the following statementsis/are correct? —

A

The resistance decreases withincreasing temperature

202
Q

●The rate at which a substance reacts depends on its:—

A

Active Mass

203
Q

●The addition of a polar solvent to a solid electrolyteresults in: —

A

Ionization

204
Q

●Electrolysis involves oxidation and reductionrespectively at:—

A

Anode and Cathode

205
Q

●On electrolyzing a solution of dilute H2SO4 betweenplatinum electrodes, the gas evolved at the anodeis:—

A

O2

206
Q

●36 g water and 828 g ethyl alcohol form an idealsolution. The mole fraction of water in it, is:—

A

0.1

207
Q

●A molal solution is one that contains one mole of asolute in:—

A

1000 gm of the solvent

208
Q

●The most reactive allotropic form of phosphorus is:—

A

White

209
Q

●Chemical composition of cinnabar is:—

A

HgS

210
Q

●Which molecule has the highest bond energy amongthe halogens?—

A

Chlorine

211
Q

●When chlorine is passed through hot solution ofcaustic soda the reaction is said as:—

A

Disproportionation reaction

212
Q

●The most paramagnetic element is:—

A

Iron

213
Q

●Diameter of an atom is in the order of:—

A

0.2 nm

214
Q

●Mass spectrometer is used to determine Mass numberof isotopes and:—

A

Relative abundance

215
Q

●Molecular ions are formed by passing: —

A

Highenergy electron beam and X-Rays

216
Q

●Empirical formula of chloroform is:—

A

CHC13

217
Q

●Which one of the following looks odd?—

A

H2S

218
Q

●A great variety of the organic compounds is due to itsproperty of carbon:—

A

Exhibit catenation

219
Q

●The amount of heat absorbed when one mole of aliquid is changed into gas at its boiling point is: —

A

Molar heat of vaporization

220
Q

●Pure water does not conduct electricity because it: —

A

Is almost totally unionized

221
Q

●In aqueous solution, strong electrolytes: —

A

Ionizealmost completely

222
Q

●Vinyl acetylene combines with hydrochloric acidproduces: —

A

Chloroprene

223
Q

●Molecular mass of water (18g) means: —

A

1-molemolecules of water

224
Q

●0.36 moles of each aluminium and oxygen react witheach other to produce aluminium oxide. Theamount of product formed is:—

A

0.18 mole

225
Q

●When 1 coulomb of charge is passed throughelectrolyte solution, then the mass deposited isequal to:—

A

Electrochemical equivalent

226
Q

●In electrolysis of a fused salt, the weight of the depositon an electrode will not depend on:—

A

Temperature of the bath

227
Q

●Electrolysis of molten anhydrous calcium chlorideproduces: —

A

Calcium

228
Q

●Strong electrolytes are those which: —

A

Completelydissociate into ions at all dilutions

229
Q

●Which of the following is not a non electrolyte?—

A

Acetic Acid

230
Q

●One mole of CO2 contains:—

A

6.022 × 1023 atoms ofcarbon

231
Q

●The number of isotopes of elements with even massnumber and even atomic number are:—

A

154

232
Q

●Size of molecule depends upon: —

A

Shape of moleculeand atomicity

233
Q

●The number of moles of CO2 which contains 16 g ofoxygen is: —

A

0.5

234
Q

●How many isotopes have odd atomic number?—

A

86

235
Q

●Percentage of calcium in calcium carbonate is:—

A

40%

236
Q

●When benzene is heated in air with V2O5 at 4500Cyields: —

A

Maleic anhydride

237
Q

●Combustion analysis is performed to determine:—

A

Empirical formula

238
Q

●When toluene reacts with chlorine in sunlight thefirst major product is:—

A

Benzyl chloride

239
Q

●When CO2 is made to react with ethyl magnesiumiodide in dry ether followed by acid hydrolysisyields: —

A

Propanoic acid

240
Q

●The process of fermentation involves all the enzymesexcept: —

A

Sucrase

241
Q

●Ethyl chloride on reduction in the presence ofZn/HCI produces:—

A

Ethane

242
Q

●Which one does not exhibit aldol condensation?—

A

Benzaldehyde

243
Q

●The common name of propane -1 3-dioic acid is:—

A

Malonic acid

244
Q

●Industrial materials thermal power stations arecoated with:—

A

Epoxy paints

245
Q

●Chlorination of water may be harmful if the watercontains:—

A

Carbon dioxide

246
Q

●What is the relative rate of effusion of CO and CO2?—

A

CO is 1.25 times faster than CO2

247
Q

●The weakest (in strength) of the followingintermolecular forces is:—

A

Vander Waals force

248
Q

●Ideal gasses have all the following characteristicsexcept:—

A

The molecules occupy no space

249
Q

●Isotopes of the same elements have:—

A

differentnumber of neutrons

250
Q

●The nucleus of an atom of every element will alwayscontain: —

A

Protons

251
Q

The properties of an element mostly corresponds tothat isotope which has greater:—

A

relativeabundance

252
Q

●Isotopes differ in: —

A

properties which depend uponmass

253
Q

●Under what conditions the gases deviate from theideal behavior?—

A

Low temperature and Highpressure

254
Q

●The introduction of Kelvin scale in thermometry isaccording to:—

A

Charles law

255
Q

●0.5 mole of nitrogen gas and 0.5 mole of carbonmonoxide gas at STP have same:—

A

Mass andAtoms

256
Q

●At constant temperature the pressure of an ideal gasis doubled its density becomes:—

A

Double

257
Q

●The diffusion of gases at absolute zero will be:—

A

Zero

258
Q

●Critical temperature for different gases is differentand depends upon: —

A

Size of molecule, Shape ofmolecule and Intermolecular attractions

259
Q

●What is the simplest form of matter?—

A

Gas

260
Q

●What is the abundant form of matter on earth?—

A

Solid

261
Q

●Which state of matter has the lowest density?—

A

Gas

262
Q

●What do we call to sudden expansion of plasma? —

A

Joule Thompson effect

263
Q

●One mole of an ideal gas at 546.5 K under 2 atmpressure has a volume of:—

A

22.414 dm3

264
Q

●The solid particles only possess:—

A

Vibrational motion

265
Q

●If 1/V is plotted on X-axis and pressure on Y-axis atconstant temperature what should appear:—

A

Straight line

266
Q

●The partial pressure exerted by the water vapours iscalled: —

A

Aqueous tension

267
Q

●The spreading of fragrance or scent in air is due to:—

A

Diffusion

268
Q

●The kinetic molecular theory of gases was putforward in 1738 by:—

A

Bernoulli

269
Q

●The highest temperature at which a substance canexist as a liquid is called its:—

A

Criticaltemperature

270
Q

●What will be the pressure of 1 mole of an ideal gasmaintained at 300 K and 250cm3 volume?—

A

98.5atm

271
Q

●The processes of effusion and diffusion are bestunderstand by:—

A

Graham’s law

272
Q

●Who made volume and pressure correction to explaindeviation of gases from ideal behaviour?—

A

Vander Waal

273
Q

●The non-ideal behaviour results chiefly from:—

A

Intermolecular attractions and finite volume

274
Q

●The gases become non-ideal at: —

A

Low temperatureand high pressure

275
Q

●Lind’s method is employed for:—

A

Liquefaction ofgases

276
Q

●The relative attraction of the nucleus for the electronsin a chemical bond is called:—

A

Electro negativity

277
Q

●Which type of bond is formed by overlap of porbitals? —

A

Pi and Sigma

278
Q

●The octet rule does not always hold for which of thefollowing elements?—

A

P

279
Q

●Shielding effect across the period:—

A

Constant

280
Q

●In O2 each oxygen atom is hybridized:—

A

sp2

281
Q

●Molecular orbitals are filled according to: —

A

Auf bauprinciple, Hunds rule and Paulis Exclusionprinciple

282
Q

●Measurement of the degree of polarity is:—

A

Dipolemoment

283
Q

●A specie with maximum number of unpairedelectrons: —

A

NH-2

284
Q

●Force responsible to hold atoms together in acompound is called:—

A

Bond

285
Q

●Energy of atom in compound is: —

A

Lesser thanindividual

286
Q

●An atom loses or gains electrons to:—

A

Gain stability,Form a bond and complete its outermost shell

287
Q

●Energy required to remove electron from an atom: —

A

Ionization potential

288
Q

●Ionization energy in a period generally:—

A

Increases

289
Q

●Greater shielding effect corresponds to ionizationenergy value:—

A

Lesser

290
Q

●Elements having high I.P values are:—

A

Non metals

291
Q

●Energy released or absorbed when electrons areadded in atom is:—

A

Electron affinity

292
Q

●In a period electronegativity from left to right:—

A

increases

293
Q

●Ionic bond is produced after complete transfer of: —

A

Electrons

294
Q

●Bond will be ionic when E.N difference of bondedatom is:—

A

Greater than 1.7

295
Q

●Mostly ionic compound are produced in betweenelements of: —

A

IA, IIA and

296
Q

●The Lewis acids are:—

A

Electron deficient

297
Q

●Sharing of 1 electron pair by one specie forms: —

A

Coordinate covalent bond

298
Q

●Angle in water molecule is:—

A

104.50

299
Q

●The geometry of ammonia is:—

A

Trigonal Pyramidal

300
Q

●Orbitals of same energy produced after mixing oforbitals of different energy are called:—

A

Degenerate orbitals

301
Q

●The relationship between energy of a photon of lightand its frequency is given by:—

A

Planck’sQuantum Theory

302
Q

●Splitting of spectral lines when atom is subjected tomagnetic field is called:—

A

Zeemans Effect

303
Q

●The number of fundamental particles in an atom ofthe lightest isotope carbon are:—

A

18

304
Q

●Increase in atomic number is observed during: —

A

Beta emission

305
Q

●Free neutron changes into proton with the emissionof:—

A

Neutrino and Electron

TRAIN-WAY (27 decks)

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