The noble gas which occurs most abundantly in the atmosphere is

Question

The noble gas which occurs most abundantly in the atmosphere is

A. Helium

B. Neon

D. Argon

Correct Answer :

D. Argon

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In sulphate pulp manufacture, the pressure and temperature in the digestor is

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Laboratory glass wares which reacts with hydrofluoric acid, are made of the __________ glass.

A. Lead

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__________ is produced using molasses as the starting raw material.

C. Benzol

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Pick out the wrong statement.

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Heating of __________ to 120°C, produces plaster of paris.

B. Gypsum

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Pick out the wrong statement.

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Thermosetting plastic materials

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Neon gas is

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D. Not a

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__________ is used as a flux in the smelting of copper ore like chalcopyrite.

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Which of the following is not required in the manufacture of soda ash by Solvay process?

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Out of the following processes of paper pulp manufacture, the maximum corrosion problem in digestion & handling equipments is encountered in the __________ process.

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Polythene is a/an __________ polymerisation product.

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Which of the following is not a product of coal tar distillation?

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High acid value of an oil or fat is an indication of

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__________ is an ore concentrating metallurgical process involving a chemical change.

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__________ is obtained as a by-product in the manufacture of sodium hydroxide using brine.

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__________ are used as corrosion inhibitor for iron & steel in aqueous solutions.

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Mercury electrolytic cells are preferred over diaphragm electrolytic cell (for production of caustic soda), as it

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Deaeration of water in its treatment is necessary, as it

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In primitive days, __________ was being manufactured by Leblanc Process.

A. Alum

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Which of the following is a co-product during the manufacture of caustic soda by electrolysis of brine?

C. H₂

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Maleic anhydride is produced by catalytic oxidation of

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The difference between saponification value and acid value is

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Answer 1

C. Krypton

Answer 2

A. 10 atm., 800 °C

Answer 3

B. 10 atm., 170-180°C

Answer 4

C. 1 atm., 170 - 180°C

Answer 5

D. 1 atm., 800°C

Answer 6

A. Around 10% alcohol

Answer 7

B. Around 1% acetic acid

Answer 8

C. Both (A) and (B)

Answer 9

D. Neither (A) nor (B)

Answer 10

B. Borosilicate

Answer 11

C. Soda lime

Answer 12

D. Alkali silicate

Answer 13

A. 1 atm & 100°C

Answer 14

B. 5 atm & 275°C

Answer 15

C. 100 atm & 500°C

Answer 16

D. 50 atm & 1000°C

Answer 17

A. Methyl alcohol

Answer 18

B. Ethyl alcohol

Answer 19

D. Dimethyl ether

Answer 20

A. 20% oleum

Answer 21

B. 65% oleum

Answer 22

C. 78% H₂SO₄

Answer 23

D. 98% H₂SO₄

Answer 24

A. Conversion of SO₂ to SO₃ in Monsanto-4 pass converter is about 98%

Answer 25

B. The chemical formula of oleum is H2S2O7, which is formed by saturating sulphuric acid with sulphur trioxide

Answer 26

C. Vitriol oil is nothing but technical sulphuric acid

Answer 27

D. Decomposition of sulphuric acid on heating does not start before its boiling

Answer 28

A. Blue vitriol

Answer 29

C. Calcium silicate

Answer 30

D. Calcium sulphate

Answer 31

A. Is prone to thermal decomposition

Answer 32

B. Has high water solubility and is unstable

Answer 33

C. Is soluble in ammonium chloride and potassium chloride solution

Answer 34

D. All (A), (B) and (C)

Answer 35

A. Permit the use of alum as a coagulant

Answer 36

B. Increase the softening capacity of zeolite

Answer 37

C. Facilitate easy regeneration of zeolite

Answer 38

D. All (A), (B) and (C)

Answer 39

A. Chamber process of sulphuric acid manufacture produces pure acid of concentration < 80%

Answer 40

B. Contact process of sulphuric acid manufacture produces pure acid of concentration ≥ 98%

Answer 41

C. 75% oleum can be produced by distillation of 20% oleum

Answer 42

D. Contact process of sulphuric acid manufacture uses nickel as the catalyst

Answer 43

A. Can be repeatedly melted

Answer 44

B. Is useful for melt casting

Answer 45

C. Cannot be melted after forming

Answer 46

D. Is useful for spinning

Answer 47

A. Flammable in nature

Answer 48

B. Used in color discharge tube

Answer 49

C. Filled in lamps having tungsten filament

Answer 50

D. All (A), (B) and (C)

Answer 51

A. Decoloration

Answer 52

B. Hydrogenation

Answer 53

C. Oxidation

Answer 54

D. Purification

Answer 55

A. A basic

Answer 56

B. An acidic

Answer 57

C. A neutral

Answer 58

A. Coke breeze

Answer 59

B. Lime powder

Answer 60

C. Silica/quartz

Answer 61

D. Dolomite

Answer 62

A. Ammonia

Answer 63

B. Limestone

Answer 64

C. Nitric acid

Answer 65

D. None of these

Answer 66

A. Mechanical

Answer 67

B. Sulphate/Kraft

Answer 68

C. Sulphite

Answer 69

D. Neutral sulphite semi-chemical

Answer 70

A. Addition

Answer 71

B. Condensation

Answer 72

C. Thermosetting

Answer 73

D. None of these

Answer 74

A. Anthracene

Answer 75

B. Creosote oil

Answer 76

C. Carbolic oil

Answer 77

D. None of these

Answer 78

A. Storage under improper conditions

Answer 79

B. Absence of unsaturation

Answer 80

C. Its smaller molecular weight

Answer 81

D. None of these

Answer 82

A. Electromagnetic separation

Answer 83

B. Froth floatation

Answer 84

C. Roasting

Answer 85

D. None of these

Answer 86

A. Chlorine

Answer 87

B. Ammonium chloride

Answer 88

C. Sodium carbonate

Answer 89

D. Sodium bi-carbonate

Answer 90

A. Phosphates

Answer 91

B. Chromates

Answer 92

C. Sulphates

Answer 93

D. Bi-carbonates

Answer 94

A. Has larger production capacity per unit cell

Answer 95

B. Consumes less power per ton of Cl2 produced

Answer 96

C. Produces high purity (70%) caustic soda directly

Answer 97

D. All (A), (B) and (C)

Answer 98

A. Minimises its turbidity

Answer 99

B. Helps in controlling its taste and odour

Answer 100

C. Minimises its corrosiveness

Answer 101

D. None of these

Answer 102

B. Washing soda

Answer 103

C. Soda ash

Answer 104

D. Calcium carbide

Answer 105

A. Na₂CO₃

Answer 106

B. NaHCO₃

Answer 107

D. None of these

Answer 108

A. Toluene

Answer 109

B. Ethyl alcohol

Answer 110

C. Naphthalene

Answer 111

D. Benzene

Answer 112

A. Called ester value

Answer 113

B. Always negative

Answer 114

C. Constant for all fatty oils

Answer 115

D. None of these

The noble gas which occurs most abundantly in the atmosphere is

Correct Answer :

Show all Chemical Process MCQ

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