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Physical and Chemical Principles > General Chemistry (Part 2) > Flashcards

General Chemistry (Part 2) Flashcards

1
Q

What is the element that is in the highest percentage in the composition of the earth?

A

oxygen

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2
Q

Formation of ozone hole is maximum over:

A

Antartica

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3
Q

The presence of ozone in the stratosphere is responsible for:

A

checking the penetration of ultraviolet rays to the earth

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4
Q

The advantage of detergents over soaps is:

A

detergents give lather even with hard water

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5
Q

The fundamental particles present in the nucleus of an atom are:

A

proton & neutron

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6
Q

Bleaching action of moist sulfur dioxide is because of its:

A

oxidizing property

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7
Q

The long-range potential of nuclear energy in India depends on its reserves of:

A

uranium

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8
Q

Which of the following gases will effuse out of football bladder most quickly?

He | H2 | N2 | O2

A

H2

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9
Q

Which of the following alkali metals has highest specific heat?

Cesium | Rubidium | Potassium | Lithium

A

lithium

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10
Q

In which of the following substances all carbon atoms are quaternary in nature?

Graphite | Diamond | Teflon | Naphthalene

A

diamond

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11
Q

Which of the following is a natural dye?

Crystal violet | Aniline blue | Alizarin | Phenolphthalein

A

alizarin

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12
Q

The ratio of pure gold in 18 carat gold is:

A

75%

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13
Q

Diamond is harder than graphite because of:

A

difference in layers of atoms

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14
Q

Gobar gas contains mainly:

A

methane

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15
Q

Which of the following elements is non-radioactive?

Uranium | Thorium | Plutonium | Zirconium

A

zirconium

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16
Q

The gas used for artificial fruit ripening of green fruit is:

A

ethylene

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17
Q

What is the element required for solar energy conversion?

A

silicon

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18
Q

Which of the following type of coal has the lowest proportion of volatile matter?

Lignite | Peat | Bituminous | Anthracite

A

anthracite

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19
Q

What is the chemical name for Baking Soda?

A

sodium bicarbonate

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20
Q

Saccharin is made up of:

A

toluene

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21
Q

PVC is obtained by the polymerization of:

A

vinyl chloride

22
Q

Which of the following vegetable oils does not contain essential fatty acids?

Sunflower oil | Mustard oil | Coconut oil | Groundnut oil

A

sunflower oil

23
Q

Which of the following imparts deep blue color to glass?

Cobalt oxide | Cupric oxide | Ferrous oxide | Nickel oxide

A

nickel oxide

24
Q

Which of the following fibers catches fire least?

Nylon | Cotton | Rayon |Terrycot

A

cotton

25
Q

Which of the following is used as filler in tire of rubber?

Carbon black | Coal | Coke |Graphite

A

carbon black

26
Q

Which of the following alloy is used in making magnet?

Duralumin | Stainless steel | Alnico | Magnesium

A

alnico

27
Q

Milk tastes sour when it is left in open for some time. This happens due to the formation of

A

lactic acid

28
Q

The polymerization of which of the following is used in manufacturing of polythene in industry?

Methane | Styrene | Acetylene | Ethylene

A

ethylene

29
Q

Which of the following chemical materials is responsible for the depletion of ozone layer in the atmosphere?

Nitrous oxide | Carbon dioxide |Chlorofluorocarbon | Sulfur dioxide

A

chlorofluorocarbon

30
Q

Aspirin is:

A

acetyl salicylic acid

31
Q

Cloud is a colloidal dispersion of:

A

Water drops in a dispersion medium of air.

32
Q

Which of the following is the petroleum wax?

Bees wax | Carnauba wax | Paraffin wax | Jojoba wax

A

paraffin wax

33
Q

Which variety of coal contains recognizable traces of the original plant material?

A

peat

34
Q

Which is the purest form of iron?

A

wrought iron

35
Q

Which of the following metals form an amalgam with other metals?

Lead | Tin | Zinc | Mercury

A

mercury

36
Q

Detergents used for cleaning clothes and utensils contain:

A

sulphonates

37
Q

Radioactive disintegration of uranium ultimately results in formation of:

A

lead

38
Q

Which of the following is used in making smoke bombs?

Sulfur | Phosphorus | Hydrogen | Carbon

A

carbon

39
Q

German silver is an alloy of:

A

zinc, copper and nickel

40
Q

A metal is exposed to the atmosphere for some time, it becomes coated with green carbonate. The metal must be:

A

copper

41
Q

Which of the following pairs of materials serves as electrodes in chargeable batteries commonly used in devices such as torch lights electric shavers etc.?

A

nickel and cadmium

42
Q

Which of the following is a super cooled liquid?

Ice cream | Teflon | Glass | Mercury

A

glass

43
Q

Metal are good conductors because:

A

They contain free electrons.

44
Q

The first metal used by a man was:

A

copper

45
Q

Which of the following is used to remove rust stains on cloth?

Kerosene | Lime | Oxalic acid solution | Petrol

A

oxalic acid solution

46
Q

Curd is sour due to presence of:

A

lactic acid

47
Q

Tear gas is:

A

carbonyl chloride

48
Q

Which of the following compounds is commonly used as an antiseptic in mouthwashes and toothpastes?

Borax | Saltpeter | Hydrogen peroxide | Sodium chloride

A

sodium chloride

49
Q

Which one of the following is used to restore the color of old oil paintings?

Ozone |Hydrogen peroxide | Barium peroxide | Sodium peroxide

A

hydrogen peroxide

50
Q

Milk is a natural:

A

emulsion

Physical and Chemical Principles (6 decks)

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