Argon is the third largest constituent of air (followed by N₂ & O₂). Its percentage by volume in air is

Question

Argon is the third largest constituent of air (followed by N₂ & O₂). Its percentage by volume in air is

A. 0.14

B. 0.34

C. 0.94

D. 1.4

Correct Answer :

C. 0.94

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Most easily and cheaply available fibrous raw material for paper manufacture available in India is bamboo. The yield of pulp produced from fibrous raw material by mechanical process is about __________ percent.

A. 75

B. < 10

C. > 30

D. 50

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Common salt is generally not produced commonly by __________ method from brine.

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'Hollander beater' machine used in the paper manufacturing plant does not accomplish the task of

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Polycaprolactam is commercially known as

C. Dacron

D. Rayon

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Iron ore hematite is concentrated using

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Calcareous & argillaceous materials are used in the manufacture of

A. Lead

B. Cement

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Oxygen is produced by fractionation of air using __________ process.

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Which of the following additives/water proofing agents is added to lower the hydrophilic (moisture loving) characteristic of cement?

Discuss this answer

Fermentation is adversely affected by the

Discuss this answer

Systemic insecticides

Discuss this answer

Pick out the false statement pertaining to water treatment.

Discuss this answer

Addition of calcium oxide to water produces

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Salt is the basic raw material for the manufacture of

A. Cement

B. Glass

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Chemical formula of 'salt cake' is

Discuss this answer

Deacon's method is used for the manufacture of

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Basic oxide is absent in __________ glass.

A. Flint

B. Pyrex

C. Quartz

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Use of water having dissolved oxygen in boilers promotes

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The amount of benzene present in pure Benzol is about __________ percent.

A. 30

B. 50

C. 70

D. 90

Discuss this answer

Main product in calcium carbide-water reaction is

C. CO₂

Discuss this answer

Catalyst used in the oxidation of benzene to produce Maleic anhydride is

B. Pt

C. Ni

D. Cr

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Chemical name of 'alum' is

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Pick out the wrong statement pertaining to nitric acid.

Discuss this answer

Chemical name of aspirin (an analgesic drug) is

Discuss this answer

Zeigler process

Discuss this answer

Finely ground calcium aluminate & silicate is a/an

A. Cermet

B. Cement

Discuss this answer

The compressive strength of cement should not be less than about 110Kg/cm² after three days & not less than 170Kg/cm² after seven days. The fineness of an ordinary cement as determined by turbidimetric method should be about __________ cm²/gm.

A. 800

B. 1600

C. 4000

D. 8500

Discuss this answer

Chemical name of Grignard reagent is

Discuss this answer

Permanent hardness of water can be removed by

Discuss this answer

Thermosetting plastic materials

Discuss this answer

Transportation of 35% oleum during winter suffers from the problem of freezing, which can be overcome by the addition of small quantity of

Discuss this answer

Answer 1

A. Freeze drying

Answer 2

B. Electrolytic

Answer 3

C. Solar evaporation

Answer 4

D. Vacuum evaporation

Answer 5

A. Final rolling out of paper

Answer 6

B. Cutting of fibres

Answer 7

C. Hydration of fibres

Answer 8

D. Fibrillation of fibre

Answer 9

A. Nylon-6

Answer 10

B. Nylon-66

Answer 11

A. Electromagnetic separation mainly

Answer 12

B. Gravity separation

Answer 13

C. Froth floatation

Answer 14

D. Roasting

Answer 15

C. Carbon disulphide

Answer 16

D. None of these

Answer 17

A. Linde's

Answer 18

B. Claude's

Answer 19

C. Either (A) or (B)

Answer 20

D. None of these

Answer 21

A. Xanthates

Answer 22

B. Stearic acid

Answer 23

C. Calcium & aluminium stearate

Answer 24

D. Formic acid

Answer 25

A. Presence of air

Answer 26

B. Absence of air

Answer 27

C. High concentration

Answer 28

D. Presence of ammonium salts

Answer 29

A. Are absorbed throughout the plant

Answer 30

B. Kill insects following external bodily contact

Answer 31

C. Are stomach poisons

Answer 32

D. Emit poisonous vapour

Answer 33

A. Aeration of water is effective in CO2 removal

Answer 34

B. The zeolite water softening process reduces the hardness of water by not more than 50%

Answer 35

C. Sodium sulphate or sodium carbonate do not cause hardness in water

Answer 36

D. Water with pH value less than 7, is acidic

Answer 37

A. Exothermic heat

Answer 38

B. Hissing sound

Answer 39

C. Slaked lime

Answer 40

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

Answer 41

C. Potteries

Answer 42

D. Caustic soda

Answer 43

A. Na₂SO₄

Answer 44

B. CaSO₄

Answer 45

C. MgSO₄

Answer 46

D. BaSO₄

Answer 47

A. Glauber's salt

Answer 48

B. Common salt

Answer 49

C. Chlorine

Answer 50

D. Graphite electrode

Answer 51

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

Answer 52

A. Corrosion

Answer 53

B. Sequestration

Answer 54

C. Scale formation

Answer 55

D. None of these

Answer 56

A. Ca(OH)₂

Answer 57

B. C₂H₂

Answer 58

D. CaCO₃

Answer 59

A. V₂O₅

Answer 60

A. Barium sulphate

Answer 61

B. Aluminium sulphate

Answer 62

C. Aluminium chloride

Answer 63

D. Calcium sulphate

Answer 64

A. About 90% of nitric acid is manufactured by Ostwald's process

Answer 65

B. It is a strong mono basic acid which reacts with almost all the metals except noble metals

Answer 66

C. Yellow color of impure nitric acid is because of dissolved oxides of nitrogen (mainly NO2)

Answer 67

D. Arc process of nitric acid manufacture is economical as compared to Ostwald's process

Answer 68

A. Acetylsalicylic acid

Answer 69

B. Nictonic acid

Answer 70

C. Calcium acetate

Answer 71

D. Methyl salicylate

Answer 72

A. Produces high density polyethylene

Answer 73

B. Produces low density polyethylene

Answer 74

C. Uses no catalyst

Answer 75

D. Employs very high pressure

Answer 76

C. Abrasive

Answer 77

D. Explosive

Answer 78

A. Sodium thiosulphate

Answer 79

B. Ethyl magnesium chloride

Answer 80

C. Sodium sulphite

Answer 81

D. Sodium bicarbonate

Answer 82

A. Boiling

Answer 83

B. Adding Ca(OH)₂

Answer 84

C. Boiling it with Na₂CO₃

Answer 85

D. None of these

Answer 86

A. Can be repeatedly melted

Answer 87

B. Is useful for melt casting

Answer 88

C. Cannot be melted after forming

Answer 89

D. Is useful for spinning

Answer 90

A. Nitric acid

Answer 91

B. Hydrochloric acid

Answer 92

C. Methyl alcohol

Answer 93

D. Formic acid

Argon is the third largest constituent of air (followed by N₂ & O₂). Its percentage by volume in air is

Correct Answer :

Show all Chemical Process MCQ

Related Questions

Most easily and cheaply available fibrous raw material for paper manufacture available in India is bamboo. The yield of pulp produced from fibrous raw material by mechanical process is about __________ percent.

Common salt is generally not produced commonly by __________ method from brine.

'Hollander beater' machine used in the paper manufacturing plant does not accomplish the task of

Polycaprolactam is commercially known as

Iron ore hematite is concentrated using

Calcareous & argillaceous materials are used in the manufacture of

Oxygen is produced by fractionation of air using __________ process.

Which of the following additives/water proofing agents is added to lower the hydrophilic (moisture loving) characteristic of cement?

Fermentation is adversely affected by the

Systemic insecticides

Pick out the false statement pertaining to water treatment.

Addition of calcium oxide to water produces

Salt is the basic raw material for the manufacture of

Chemical formula of 'salt cake' is

Deacon's method is used for the manufacture of

Basic oxide is absent in __________ glass.

Use of water having dissolved oxygen in boilers promotes

The amount of benzene present in pure Benzol is about __________ percent.

Main product in calcium carbide-water reaction is

Catalyst used in the oxidation of benzene to produce Maleic anhydride is

Chemical name of 'alum' is

Pick out the wrong statement pertaining to nitric acid.

Chemical name of aspirin (an analgesic drug) is

Zeigler process

Finely ground calcium aluminate & silicate is a/an

The compressive strength of cement should not be less than about 110Kg/cm² after three days & not less than 170Kg/cm² after seven days. The fineness of an ordinary cement as determined by turbidimetric method should be about __________ cm²/gm.

Chemical name of Grignard reagent is

Permanent hardness of water can be removed by

Thermosetting plastic materials

Transportation of 35% oleum during winter suffers from the problem of freezing, which can be overcome by the addition of small quantity of

Also checkout

Argon is the third largest constituent of air (followed by N2 & O2). Its percentage by volume in air is

Correct Answer :

Show all Chemical Process MCQ

Related Questions

Most easily and cheaply available fibrous raw material for paper manufacture available in India is bamboo. The yield of pulp produced from fibrous raw material by mechanical process is about __________ percent.

Common salt is generally not produced commonly by __________ method from brine.

'Hollander beater' machine used in the paper manufacturing plant does not accomplish the task of

Polycaprolactam is commercially known as

Iron ore hematite is concentrated using

Calcareous & argillaceous materials are used in the manufacture of

Oxygen is produced by fractionation of air using __________ process.

Which of the following additives/water proofing agents is added to lower the hydrophilic (moisture loving) characteristic of cement?

Fermentation is adversely affected by the

Systemic insecticides

Pick out the false statement pertaining to water treatment.

Addition of calcium oxide to water produces

Salt is the basic raw material for the manufacture of

Chemical formula of 'salt cake' is

Deacon's method is used for the manufacture of

Basic oxide is absent in __________ glass.

Use of water having dissolved oxygen in boilers promotes

The amount of benzene present in pure Benzol is about __________ percent.

Main product in calcium carbide-water reaction is

Catalyst used in the oxidation of benzene to produce Maleic anhydride is

Chemical name of 'alum' is

Pick out the wrong statement pertaining to nitric acid.

Chemical name of aspirin (an analgesic drug) is

Zeigler process

Finely ground calcium aluminate & silicate is a/an

The compressive strength of cement should not be less than about 110Kg/cm2 after three days & not less than 170Kg/cm2 after seven days. The fineness of an ordinary cement as determined by turbidimetric method should be about __________ cm2/gm.

Chemical name of Grignard reagent is

Permanent hardness of water can be removed by

Thermosetting plastic materials

Transportation of 35% oleum during winter suffers from the problem of freezing, which can be overcome by the addition of small quantity of

Also checkout

Argon is the third largest constituent of air (followed by N₂ & O₂). Its percentage by volume in air is

The compressive strength of cement should not be less than about 110Kg/cm² after three days & not less than 170Kg/cm² after seven days. The fineness of an ordinary cement as determined by turbidimetric method should be about __________ cm²/gm.