chem Flashcards
1
Q
melting point depend on
A
pressure
2
Q
highest melting point
A
gold
3
Q
bose einstein condensation develop by
A
cooling a gas of extremely low density
4
Q
component present in large quantity
A
solvent
5
Q
electron discovered by
A
jj thomson
6
Q
charge on proton
A
1.6022* 10(19)
7
Q
mass of neutron is more or less
A
more
8
Q
proton and neutron jointly called
A
neron
9
Q
atomic no
A
number of proton
10
Q
mass number
A
no of prton+neutron
11
Q
isotopes
A
same atomic no but have diff atomic mass
12
Q
isobar
A
same atomic mass but diff atomic no
13
Q
iso neutronic
A
same no of neutrons
14
Q
alpha ray
A
positive charge
15
Q
bita ray
A
negative charge
16
Q
gamma ray velocity
A
eqaul to velocity of light
17
Q
which has highest penetrating power
A
gamma
18
Q
which has highest power to ionise gas
A
alpha ray
19
Q
which ray deflate towards negative charge
A
alpha rays
20
Q
which ray do not deflated in magnetic field
A
gammma rays
21
Q
lavoiser work
A
discovery of role of oxygen
22
Q
constituent of atomicc nucleus
A
proton and neutron
23
Q
atomic nucleus was discovered by
A
rutherford
24
Q
neutron was discovered by
A
chadwick
25
deutron
proton and neutron
26
alpha particle positive charge is equal to
nucleus of an atom of helium
27
nucleus of helion
2 proton and 2 neutron
28
which element do not contain neutron
hydrogen
29
filling of orbital is governed by
aufbau principle
30
magnetic quantum no
orientation
31
radioactivity is measured buy
geiger counter
32
radioactivity discovered by
bacquerel
33
mendlev arranged element in increasing order of
atomic mass
34
group in modern periodic table
18
35
period in horizantal
7
36
6 and 7 contain
long period table
37
which group contain nobel gas
18
38
electronic configuration of metal
2,8,8,2
39
chemical structure of pearl
calcium carbonate
40
talc soapstone
magnesium silicate`
41
limestone
calcium arbonate
42
plaster os paruis
gypsum
43
chemical reaction is what at high temp
fast
44
if atmosphe4ric pressure decrease
then boiling point decrease
45
rubies and saphire
aluminium oxide
46
which metal is assesed in native state
gold
47
18k gold is
75
48
oxocarbon
carbon and oxygen
49
which is referered as plumbago
graphite
50
under what circumstances graphite convert into diamond
high pressure
51
bickminsterfullerence is called as
nanotube
52
which has least carbon content
ignite
53
which one has maximum no of compound
carbon
54
grapghene
nano structure of carbon
55
solid caerbon dioxide
dry ice
56
which lubricant is used in heavy industries
graphite
57
hydrogen is
lightest element`
58
protonium
without neutron stable form
59
deutrinium
one neutron stable
60
tritrium
2 neutron unstable
61
in nature which is very less
tritrinum
62
which hydrogen isotope is use for electrolysis of water
deutrinium
63
deitrinium is soluble in water or not
not
64
electronic confg of hydrogen
1
65
heavy water is oxide of
deutrinium
66
heavy water is used as
neutron moderator
67
rain water is a
soft water
68
percentage of hydrogen in water
11.11
69
1 mole of hydrogen is equal to
2 gram
70
burning of hyderogen give
water
71
heavy water contain
deutrinium in place of hydrogen
72
heavy water molecular weight
20
73
heavywater discovered by
hc urey
74
which gas is used for purification of water
chlorine
75
by which alum clean muddy water
coagulation
76
gas use in making of vanaspati ghee
hydrogen
77
catalyst used in hydrogenisation of vegetable oil
hydrogen
78
which gas is used by deep sea divers
oxygen and helium
79
which gas is used as anesthetic
nitrous oxide
80
which gas is used as tear gas
ammonia
81
an inert or nobel gas
taht has extremely low reactive with other substances
82
starnger gas
xenon
83
Halogens are a group of elements located in Group
17
84
acid release which compound in water
proton and hydrogen
85
acid donate waht to other substance
proton
86
tomato spinach contain which acid
oxalyic acid
87
sting of ant
formic acid
88
which base is used for prepration of soap
sodium hydroxidfe
89
shoe flower turn acidic solution into and base
acid in magenta and base into green
90
methyl orange turn acid and base
red in acidd and yellow in base
91
phenopthelen change in acid and base n
no change and pink in base
92
aqua regia
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
ph of a solution changes from 3 to 6 then the H+ concentratiobn change
1000 times
94
if ph number increase by 1 then h+ ion decrease by
10 times
95
which acid is used as basic in industry
h2so4
96
lime water turned milky by
co2
97
neela thotha
iron sulphate
98
chemical used for destroying fungi in water tank
copper sulphate
99
blue vitriol
copper sulphate
100
baking soda
sodium bi carbonate
101
bleaching powder
calcium oxychloride
102
negative charge ion
anion
103
positive charge ion
cation
104
valency
combining power of a element is known as valency
105
atomic no is denoted by
z
106
position of mass no and atomic no
mass no on right top and atomic no on right bottom
107
positive charge
cation
108
valency
combinig power
109
water contain
2 hydrogen and 1 oxygen
110
cathode has coating of
zinc
111
gold foil experiment related to
rutherford
112
oxygen valency
2
113
