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chem Flashcards

1
Q

melting point depend on

A

pressure

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2
Q

highest melting point

A

gold

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3
Q

bose einstein condensation develop by

A

cooling a gas of extremely low density

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4
Q

component present in large quantity

A

solvent

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5
Q

electron discovered by

A

jj thomson

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6
Q

charge on proton

A

1.6022* 10(19)

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7
Q

mass of neutron is more or less

A

more

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8
Q

proton and neutron jointly called

A

neron

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9
Q

atomic no

A

number of proton

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10
Q

mass number

A

no of prton+neutron

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11
Q

isotopes

A

same atomic no but have diff atomic mass

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12
Q

isobar

A

same atomic mass but diff atomic no

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13
Q

iso neutronic

A

same no of neutrons

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14
Q

alpha ray

A

positive charge

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15
Q

bita ray

A

negative charge

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16
Q

gamma ray velocity

A

eqaul to velocity of light

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17
Q

which has highest penetrating power

A

gamma

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18
Q

which has highest power to ionise gas

A

alpha ray

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19
Q

which ray deflate towards negative charge

A

alpha rays

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20
Q

which ray do not deflated in magnetic field

A

gammma rays

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21
Q

lavoiser work

A

discovery of role of oxygen

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22
Q

constituent of atomicc nucleus

A

proton and neutron

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23
Q

atomic nucleus was discovered by

A

rutherford

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24
Q

neutron was discovered by

A

chadwick

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25
Q

deutron

A

proton and neutron

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26
Q

alpha particle positive charge is equal to

A

nucleus of an atom of helium

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27
Q

nucleus of helion

A

2 proton and 2 neutron

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28
Q

which element do not contain neutron

A

hydrogen

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29
Q

filling of orbital is governed by

A

aufbau principle

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30
Q

magnetic quantum no

A

orientation

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31
Q

radioactivity is measured buy

A

geiger counter

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32
Q

radioactivity discovered by

A

bacquerel

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33
Q

mendlev arranged element in increasing order of

A

atomic mass

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34
Q

group in modern periodic table

A

18

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35
Q

period in horizantal

A

7

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36
Q

6 and 7 contain

A

long period table

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37
Q

which group contain nobel gas

A

18

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38
Q

electronic configuration of metal

A

2,8,8,2

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39
Q

chemical structure of pearl

A

calcium carbonate

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40
Q

talc soapstone

A

magnesium silicate`

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41
Q

limestone

A

calcium arbonate

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42
Q

plaster os paruis

A

gypsum

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43
Q

chemical reaction is what at high temp

A

fast

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44
Q

if atmosphe4ric pressure decrease

A

then boiling point decrease

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45
Q

rubies and saphire

A

aluminium oxide

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46
Q

which metal is assesed in native state

A

gold

47
Q

18k gold is

A

75

48
Q

oxocarbon

A

carbon and oxygen

49
Q

which is referered as plumbago

A

graphite

50
Q

under what circumstances graphite convert into diamond

A

high pressure

51
Q

bickminsterfullerence is called as

A

nanotube

52
Q

which has least carbon content

A

ignite

53
Q

which one has maximum no of compound

A

carbon

54
Q

grapghene

A

nano structure of carbon

55
Q

solid caerbon dioxide

A

dry ice

56
Q

which lubricant is used in heavy industries

A

graphite

57
Q

hydrogen is

A

lightest element`

58
Q

protonium

A

without neutron stable form

59
Q

deutrinium

A

one neutron stable

60
Q

tritrium

A

2 neutron unstable

61
Q

in nature which is very less

A

tritrinum

62
Q

which hydrogen isotope is use for electrolysis of water

A

deutrinium

63
Q

deitrinium is soluble in water or not

A

not

64
Q

electronic confg of hydrogen

A

1

65
Q

heavy water is oxide of

A

deutrinium

66
Q

heavy water is used as

A

neutron moderator

67
Q

rain water is a

A

soft water

68
Q

percentage of hydrogen in water

A

11.11

69
Q

1 mole of hydrogen is equal to

A

2 gram

70
Q

burning of hyderogen give

A

water

71
Q

heavy water contain

A

deutrinium in place of hydrogen

72
Q

heavy water molecular weight

A

20

73
Q

heavywater discovered by

A

hc urey

74
Q

which gas is used for purification of water

A

chlorine

75
Q

by which alum clean muddy water

A

coagulation

76
Q

gas use in making of vanaspati ghee

A

hydrogen

77
Q

catalyst used in hydrogenisation of vegetable oil

A

hydrogen

78
Q

which gas is used by deep sea divers

A

oxygen and helium

79
Q

which gas is used as anesthetic

A

nitrous oxide

80
Q

which gas is used as tear gas

A

ammonia

81
Q

an inert or nobel gas

A

taht has extremely low reactive with other substances

82
Q

starnger gas

A

xenon

83
Q

Halogens are a group of elements located in Group

A

17

84
Q

acid release which compound in water

A

proton and hydrogen

85
Q

acid donate waht to other substance

A

proton

86
Q

tomato spinach contain which acid

A

oxalyic acid

87
Q

sting of ant

A

formic acid

88
Q

which base is used for prepration of soap

A

sodium hydroxidfe

89
Q

shoe flower turn acidic solution into and base

A

acid in magenta and base into green

90
Q

methyl orange turn acid and base

A

red in acidd and yellow in base

91
Q

phenopthelen change in acid and base n

A

no change and pink in base

92
Q

aqua regia

A

is a highly corrosive, fuming liquid mixture of concentrated nitric acid (HNO3) and concentrated hydrochloric acid (HCl), optimally in a molar ratio of 1:3

93
Q

ph of a solution changes from 3 to 6 then the H+ concentratiobn change

A

1000 times

94
Q

if ph number increase by 1 then h+ ion decrease by

A

10 times

95
Q

which acid is used as basic in industry

A

h2so4

96
Q

lime water turned milky by

A

co2

97
Q

neela thotha

A

iron sulphate

98
Q

chemical used for destroying fungi in water tank

A

copper sulphate

99
Q

blue vitriol

A

copper sulphate

100
Q

baking soda

A

sodium bi carbonate

101
Q

bleaching powder

A

calcium oxychloride

102
Q

negative charge ion

A

anion

103
Q

positive charge ion

A

cation

104
Q

valency

A

combining power of a element is known as valency

105
Q

atomic no is denoted by

A

z

106
Q

position of mass no and atomic no

A

mass no on right top and atomic no on right bottom

107
Q

positive charge

A

cation

108
Q

valency

A

combinig power

109
Q

water contain

A

2 hydrogen and 1 oxygen

110
Q

cathode has coating of

A

zinc

111
Q

gold foil experiment related to

A

rutherford

112
Q

oxygen valency

A

2

113
Q
A

Gs (81 decks)

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