Nitrous oxide used as anaesthetic is usually mixed with

Question

Nitrous oxide used as anaesthetic is usually mixed with

C. oxygen

Correct Answer :

C. oxygen

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An element which is preserved under water is

A. Sodium

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Invar, used for making pendulums is an alloy of steel with

B. nickel

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Which of the following is not an antibiotic?

D. codein

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The commonest ore of aluminium is

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A mixture of ethyl alcohol and water can be separated by

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Tincture iodine is a solution of

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Deficiency of iron causes

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Laughing gas is

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According to the modern Periodic Law, the properties of elements are periodic functions of their

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The most abundant constituent in air is

C. oxygen

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In the nitrogen cycle, denitrifying bacteria

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The process of heating steel to bright red heat and cooling suddenly by plunging it into water is known as

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The atomic number of an element represents

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Refined petroleum is decolourised by

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Burglar proof safes are made of

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The rate of setting of cement is slowed down by the addition of

B. gypsum

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The addition of a neutron to the nucleus of an atom

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Rusting of iron cannot be prevented by

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A compound of carbon used as anaesthetic is

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Suspended impurities in water are effectively removed by

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Heavy water was discovered by

C. Stas

D. Urey

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The ore of iron is

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Water has an unusually high bolling point because

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In the making of jewels, gold is usually mixed with

A. zinc

B. tin

C. copper

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Proteins are polymerisation products of

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Ascorbic acid is the chemical name for

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Bordeaux mixture contains

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Grape sugar is another name for

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A burning substance which continues to burn in a jar of carbon dioxide is

A. zinc

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A light alloy having high tensile strength is

B. solder

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Answer 1

A. ethyl alcohol

Answer 2

B. chloroform

Answer 3

D. methyl alcohol

Answer 4

B. red phosphorus

Answer 5

C. white phosphorus

Answer 6

D. sulphur

Answer 7

A. tungsten

Answer 8

C. manganese

Answer 9

D. chromium

Answer 10

A. streptomycin

Answer 11

B. terramycin

Answer 12

C. aureomycin

Answer 13

A. cryolite

Answer 14

B. bauxite

Answer 15

C. malachite

Answer 16

D. azurite

Answer 17

A. evaporation

Answer 18

B. sublimation

Answer 19

C. using a separating funnel

Answer 20

D. fractional distillation

Answer 21

A. iodine in potassium iodide

Answer 22

B. iodine in alcohol

Answer 23

C. iodine in water

Answer 24

D. iodine in carbon disulphide

Answer 25

A. nervous disorders

Answer 26

B. heart diseases

Answer 27

C. anaemia

Answer 28

D. impairment of vision

Answer 29

A. nitric oxide

Answer 30

B. nitrogen peroxide

Answer 31

C. nitrogen pentoxide

Answer 32

D. nitrous oxide

Answer 33

A. valency

Answer 34

B. atomic mass

Answer 35

C. number of neutrons

Answer 36

D. atomic number

Answer 37

A. hydrogen

Answer 38

B. nitrogen

Answer 39

D. noble gases

Answer 40

A. oxidise ammonia to nitrates

Answer 41

B. convert nitrogen into ammonia

Answer 42

C. oxidise ammonia to free nitrogen

Answer 43

D. oxidise ammonia to oxides of nitrogen

Answer 44

A. annealing

Answer 45

B. hardening

Answer 46

C. quenching

Answer 47

D. tempering

Answer 48

A. number of neutrons in the nucleus

Answer 49

B. number of protons and neutrons in the nucleus

Answer 50

C. the valency of the element

Answer 51

D. number of protons in the nucleus

Answer 52

A. manganese dioxide

Answer 53

B. bauxite

Answer 54

C. animal charcoal

Answer 55

D. quicklime

Answer 56

A. Tungsten steel

Answer 57

B. Manganese steel

Answer 58

C. Chromium steel

Answer 59

D. Nickel steel

Answer 60

A. quicklime

Answer 61

C. soda lime

Answer 62

D. bleaching powder

Answer 63

A. increases the atomic mass of the atom

Answer 64

B. decreases the atomic mass of the atom

Answer 65

C. increases the charge on the nucleus

Answer 66

D. decreases the charge on the nucleus

Answer 67

A. painting

Answer 68

B. applying alkaline phosphate

Answer 69

C. applying soap water

Answer 70

D. galvanising

Answer 71

A. carbon disulphide

Answer 72

B. carbon tetrachloride

Answer 73

C. phosgene

Answer 74

D. chloroform

Answer 75

A. adding milk of lime

Answer 76

B. filtering through sand

Answer 77

C. adding filter alum

Answer 78

D. chlorination

Answer 79

A. TW Richards

Answer 80

B. FW Aston

Answer 81

A. Dolomite

Answer 82

B. Magnetite

Answer 83

C. Bauxite

Answer 84

D. Anglesite

Answer 85

A. its molecular weight is low

Answer 86

B. it is denser than ice

Answer 87

C. it is a good solvent for many ionic substances

Answer 88

D. the molecules of water are joined by hydrogen bonds

Answer 89

D. aluminium

Answer 90

A. aldehydes

Answer 91

B. alkenes

Answer 92

C. amino acids

Answer 93

D. alkynes

Answer 94

A. Vitamin B6

Answer 95

B. Vitamin C

Answer 96

C. Vitamin K

Answer 97

D. Vitamin D

Answer 98

A. copper sulphate and water

Answer 99

B. copper sulphate, lime and water

Answer 100

C. thio-urea and lime

Answer 101

D. copper sulphate and thio-urea

Answer 102

A. glucose

Answer 103

B. fructose

Answer 104

C. sucrose

Answer 105

D. maltose

Answer 106

B. red phosphorus

Answer 107

C. magnesium

Answer 108

D. sulphur

Answer 109

A. German silver

Answer 110

C. magnalium

Answer 111

D. bell metal

Nitrous oxide used as anaesthetic is usually mixed with

Correct Answer :

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