chem

Question 1

melting point depend on

Answer 1

pressure

Question 2

highest melting point

Answer 2

gold

Question 3

bose einstein condensation develop by

Answer 3

cooling a gas of extremely low density

Question 4

component present in large quantity

Answer 4

solvent

Question 5

electron discovered by

Answer 5

jj thomson

Question 6

charge on proton

Answer 6

1.6022* 10(19)

Question 7

mass of neutron is more or less

Answer 7

more

Question 8

proton and neutron jointly called

Answer 8

neron

Question 9

atomic no

Answer 9

number of proton

Question 10

mass number

Answer 10

no of prton+neutron

Question 11

isotopes

Answer 11

same atomic no but have diff atomic mass

Question 12

isobar

Answer 12

same atomic mass but diff atomic no

Question 13

iso neutronic

Answer 13

same no of neutrons

Question 14

alpha ray

Answer 14

positive charge

Question 15

bita ray

Answer 15

negative charge

Question 16

gamma ray velocity

Answer 16

eqaul to velocity of light

Question 17

which has highest penetrating power

Answer 17

gamma

Question 18

which has highest power to ionise gas

Answer 18

alpha ray

Question 19

which ray deflate towards negative charge

Answer 19

alpha rays

Question 20

which ray do not deflated in magnetic field

Answer 20

gammma rays

Question 21

lavoiser work

Answer 21

discovery of role of oxygen

Question 22

constituent of atomicc nucleus

Answer 22

proton and neutron

Question 23

atomic nucleus was discovered by

Answer 23

rutherford

Question 24

neutron was discovered by

Answer 24

chadwick

Question 25

deutron

Answer 25

proton and neutron

Question 26

alpha particle positive charge is equal to

Answer 26

nucleus of an atom of helium

Question 27

nucleus of helion

Answer 27

2 proton and 2 neutron

Question 28

which element do not contain neutron

Answer 28

hydrogen

Question 29

filling of orbital is governed by

Answer 29

aufbau principle

Question 30

magnetic quantum no

Answer 30

orientation

Question 31

radioactivity is measured buy

Answer 31

geiger counter

Question 32

radioactivity discovered by

Answer 32

bacquerel

Question 33

mendlev arranged element in increasing order of

Answer 33

atomic mass

Question 34

group in modern periodic table

Answer 34

18

Question 35

period in horizantal

Answer 35

7

Question 36

6 and 7 contain

Answer 36

long period table

Question 37

which group contain nobel gas

Answer 37

18

Question 38

electronic configuration of metal

Answer 38

2,8,8,2

Question 39

chemical structure of pearl

Answer 39

calcium carbonate

Question 40

talc soapstone

Answer 40

magnesium silicate`

Question 41

limestone

Answer 41

calcium arbonate

Question 42

plaster os paruis

Answer 42

gypsum

Question 43

chemical reaction is what at high temp

Answer 43

fast

Question 44

if atmosphe4ric pressure decrease

Answer 44

then boiling point decrease

Question 45

rubies and saphire

Answer 45

aluminium oxide

Question 46

which metal is assesed in native state

Answer 46

gold

Question 47

18k gold is

Answer 47

75

Question 48

oxocarbon

Answer 48

carbon and oxygen

Question 49

which is referered as plumbago

Answer 49

graphite

Question 50

under what circumstances graphite convert into diamond

Answer 50

high pressure

Question 51

bickminsterfullerence is called as

Answer 51

nanotube

Question 52

which has least carbon content

Answer 52

ignite

Question 53

which one has maximum no of compound

Answer 53

carbon

Question 54

grapghene

Answer 54

nano structure of carbon

Question 55

solid caerbon dioxide

Answer 55

dry ice

Question 56

which lubricant is used in heavy industries

Answer 56

graphite

Question 57

hydrogen is

Answer 57

lightest element`

Question 58

protonium

Answer 58

without neutron stable form

Question 59

deutrinium

Answer 59

one neutron stable

Question 60

tritrium

Answer 60

2 neutron unstable

Question 61

in nature which is very less

Answer 61

tritrinum

Question 62

which hydrogen isotope is use for electrolysis of water

Answer 62

deutrinium

Question 63

deitrinium is soluble in water or not

Answer 63

not

Question 64

electronic confg of hydrogen

Answer 64

1

Question 65

heavy water is oxide of

Answer 65

deutrinium

Question 66

heavy water is used as

Answer 66

neutron moderator

Question 67

rain water is a

Answer 67

soft water

Question 68

percentage of hydrogen in water

Answer 68

11.11

Question 69

1 mole of hydrogen is equal to

Answer 69

2 gram

Question 70

burning of hyderogen give

Answer 70

water

Question 71

heavy water contain

Answer 71

deutrinium in place of hydrogen

Question 72

heavy water molecular weight

Answer 72

20

Question 73

heavywater discovered by

Answer 73

hc urey

Question 74

which gas is used for purification of water

Answer 74

chlorine

Question 75

by which alum clean muddy water

Answer 75

coagulation

Question 76

gas use in making of vanaspati ghee

Answer 76

hydrogen

Question 77

catalyst used in hydrogenisation of vegetable oil

Answer 77

hydrogen

Question 78

which gas is used by deep sea divers

Answer 78

oxygen and helium

Question 79

which gas is used as anesthetic

Answer 79

nitrous oxide

Question 80

which gas is used as tear gas

Answer 80

ammonia

Question 81

an inert or nobel gas

Answer 81

taht has extremely low reactive with other substances

Question 82

starnger gas

Answer 82

xenon

Question 83

Halogens are a group of elements located in Group

Answer 83

17

Question 84

acid release which compound in water

Answer 84

proton and hydrogen

Question 85

acid donate waht to other substance

Answer 85

proton

Question 86

tomato spinach contain which acid

Answer 86

oxalyic acid

Question 87

sting of ant

Answer 87

formic acid

Question 88

which base is used for prepration of soap

Answer 88

sodium hydroxidfe

Question 89

shoe flower turn acidic solution into and base

Answer 89

acid in magenta and base into green

Question 90

methyl orange turn acid and base

Answer 90

red in acidd and yellow in base

Question 91

phenopthelen change in acid and base n

Answer 91

no change and pink in base

Question 92

aqua regia

Answer 92

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

Question 93

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

Answer 93

1000 times

Question 94

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

Answer 94

10 times

Question 95

which acid is used as basic in industry

Answer 95

h2so4

Question 96

lime water turned milky by

Answer 96

co2

Question 97

neela thotha

Answer 97

iron sulphate

Question 98

chemical used for destroying fungi in water tank

Answer 98

copper sulphate

Question 99

blue vitriol

Answer 99

copper sulphate

Question 100

baking soda

Answer 100

sodium bi carbonate

Question 101

bleaching powder

Answer 101

calcium oxychloride

Question 102

negative charge ion

Answer 102

anion

Question 103

positive charge ion

Answer 103

cation

Question 104

valency

Answer 104

combining power of a element is known as valency

Question 105

atomic no is denoted by

Answer 105

z

Question 106

position of mass no and atomic no

Answer 106

mass no on right top and atomic no on right bottom

Question 107

positive charge

Answer 107

cation

Question 108

valency

Answer 108

combinig power

Question 109

water contain

Answer 109

2 hydrogen and 1 oxygen

Question 110

cathode has coating of

Answer 110

zinc

Question 111

gold foil experiment related to

Answer 111

rutherford

Question 112

oxygen valency

Answer 112

2