One of the steps during refining of cane sugar consists of addition of hydrated lime to the sugar syrup followed by carbonation of the resulting solution. The purpose of this step is to

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One of the steps during refining of cane sugar consists of addition of hydrated lime to the sugar syrup followed by carbonation of the resulting solution. The purpose of this step is to

A. Adjust the pH of the syrup

B. Remove the coloring matter from the syrup

C. Reduce the viscosity of the syrup

D. Improve the rate of crystallisation of sugar

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Commercial scale production of hydrogen from iron-steam reaction represented by, 3Fe + 3H₂O = Fe₃O₄ + 4H₂, is not practised, as it is

A. A slow reaction

B. A discontinuous reaction (requiring regeneration of iron by water gas intermittently)

C. Still in development stage (by employing fluidised bed technique)

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

Discuss this answer

One of the steps during refining of cane sugar consists of addition of hydrated lime to the sugar syrup followed by carbonation of the resulting solution. The purpose of this step is to

A. Adjust the pH of the syrup

B. Remove the coloring matter from the syrup

C. Reduce the viscosity of the syrup

D. Improve the rate of crystallisation of sugar

Discuss this answer

Fire clay is __________ refractory material.

A. A basic

B. An acidic

C. A neutral

D. Not a

Discuss this answer

Washing soda is chemically represented by

A. Na₂CO₃

B. Na₂CO₃.H₂O

C. Na₂CO₃.10H₂O

D. NaHCO₃

Discuss this answer

Carbon content of pitch (residue of coal tar distillation) is around __________ percent.

A. 70

B. 55

C. 80

D. 94

Discuss this answer

The chamber process is

A. Preferred over contact process for producing 98 to 100% H₂SO₄ and various oleums

B. Non-catalytic and operates only on pyrites

C. A batch process for directly producing high strength (98 to 100%) H₂SO₄

D. None of these

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The temperature in the calcium carbide furnace is __________ °C.

A. 200-300

B. 700-850

C. 2000-2200

D. 4000-4500

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Carboxymethyl cellulose (CMC) is added in detergents to act as a/an

A. Surfactant

B. Builder

C. Optical brightening agent

D. Anti soil redeposition agent

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Na2CO3 is called

A. Washing soda

B. Soda ash

C. Plaster of Paris

D. Calcite

Discuss this answer

Starting raw material for the manufacture of alum is

A. Alumina

B. Gypsum

C. Bauxite

D. Ammonium bicarbonate

Discuss this answer

Wax is a

A. Mixture of glycerides

B. Mixture of esters of polyhydric alcohols excepting glycerine

C. Liquid at room temperature

D. Mixture of glycerides of fatty acids

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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.

A. Mechanical

B. Sulphate/Kraft

C. Sulphite

D. Neutral sulphite semi-chemical

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Polythene is a/an __________ polymerisation product.

A. Addition

B. Condensation

C. Thermosetting

D. None of these

Discuss this answer

L.D. converter is used in the production of

A. Pig iron

B. Steel

C. Copper

D. Zinc

Discuss this answer

For the hydrogenation of oils, (i) is commonly used as catalyst and (ii) is a catalyst poison.

A. (i) platinum (ii) sulphur

B. (i) palladium (ii) oxygen

C. (i) nickel (ii) sulphur

D. (i) nickel (ii) oxygen

Discuss this answer

Teflon is

A. Phenol formaldehyde

B. An inorganic polymer

C. Poly tetra-fluoro-ethylene (P.T.F.E.)

D. A monomer

Discuss this answer

Commonly used glass is known as the __________ glass.

A. Flint

B. Hard

C. Pyrex

D. Soda

Discuss this answer

Which is a high grade pulp?

A. Rag pulp

B. Mechanical pulp

C. Sulphate pulp

D. Sulphite pulp

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Synthesis gas is a mixture of

A. CO and H₂

B. N₂ and H₂

C. H₂, CH₄ and CO

D. CO₂ and H₂

Discuss this answer

Pick out the wrong statement.

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

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

C. Vitriol oil is nothing but technical sulphuric acid

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

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Commercially ethylene is produced from naphtha by

A. Catalytic cracking

B. Catalytic dehydrogenation

C. Pyrolysis

D. Hydrocracking

Discuss this answer

Sudden temperature fluctuation does not affect pyrex glass, because of its

A. Low co-efficient of expansion

B. High co-efficient of expansion

C. High melting point

D. Both (B) and (C)

Discuss this answer

Commercial production of calcium carbide requires limestone and __________ as raw materials.

A. Coke

B. Sand

C. Soda ash

D. Fuel oil

Discuss this answer

Which of the following is not an antibiotic?

A. Penicillin

B. Streptomycin

C. Tetracycline

D. Quinine

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Nickel is not used as a catalyst in the __________ reaction.

A. Shift conversion

B. Oil hydrogenation

C. Steaming reforming of naphtha

D. Ammonia cracking/dissociation

Discuss this answer

Solvay process as compared to dual process
(i.e. modified Solvay process).

A. Can use low grade brine

B. Has less corrosion problems

C. Involves higher investment in NH3 recovery units than that for crystallisation units for NH4Cl

D. Both (B) and (C)

Discuss this answer

Yellow glycerine is made into white, using

A. Activated carbon

B. Diatomaceous earth

C. Bauxite

D. Bentonite

Discuss this answer

Magnesium and calcium __________ cause temporary hardness of water.

A. Carbonates

B. Bicarbonates

C. Phosphates

D. Sulphates

Discuss this answer

Chloramines are used in water treatment for

A. Disinfection and control of taste & odour

B. Corrosion control

C. Removing turbidity

D. Control of bacteria

Discuss this answer

Chrome tanning and vegetable tanning are done for

A. Light & heavy leather respectively

B. Heavy & light leather respectively

C. Both light & heavy leather

D. Neither light nor heavy leather

Discuss this answer

Accepted Answer

A. Adjust the pH of the syrup

One of the steps during refining of cane sugar consists of addition of hydrated lime to the sugar syrup followed by carbonation of the resulting solution. The purpose of this step is to

Correct Answer :

Show all Chemical Process MCQ

Related Questions

Commercial scale production of hydrogen from iron-steam reaction represented by, 3Fe + 3H₂O = Fe₃O₄ + 4H₂, is not practised, as it is

One of the steps during refining of cane sugar consists of addition of hydrated lime to the sugar syrup followed by carbonation of the resulting solution. The purpose of this step is to

Fire clay is __________ refractory material.

Washing soda is chemically represented by

Carbon content of pitch (residue of coal tar distillation) is around __________ percent.

The chamber process is

The temperature in the calcium carbide furnace is __________ °C.

Carboxymethyl cellulose (CMC) is added in detergents to act as a/an

Na2CO3 is called

Starting raw material for the manufacture of alum is

Wax is a

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

Polythene is a/an __________ polymerisation product.

L.D. converter is used in the production of

For the hydrogenation of oils, (i) is commonly used as catalyst and (ii) is a catalyst poison.

Teflon is

Commonly used glass is known as the __________ glass.

Which is a high grade pulp?

Synthesis gas is a mixture of

Pick out the wrong statement.

Commercially ethylene is produced from naphtha by

Sudden temperature fluctuation does not affect pyrex glass, because of its

Commercial production of calcium carbide requires limestone and __________ as raw materials.

Which of the following is not an antibiotic?

Nickel is not used as a catalyst in the __________ reaction.

Solvay process as compared to dual process
(i.e. modified Solvay process).

Yellow glycerine is made into white, using

Magnesium and calcium __________ cause temporary hardness of water.

Chloramines are used in water treatment for

Chrome tanning and vegetable tanning are done for

Also checkout

One of the steps during refining of cane sugar consists of addition of hydrated lime to the sugar syrup followed by carbonation of the resulting solution. The purpose of this step is to

Correct Answer :

Show all Chemical Process MCQ

Related Questions

Commercial scale production of hydrogen from iron-steam reaction represented by, 3Fe + 3H2O = Fe3O4 + 4H2, is not practised, as it is

One of the steps during refining of cane sugar consists of addition of hydrated lime to the sugar syrup followed by carbonation of the resulting solution. The purpose of this step is to

Fire clay is __________ refractory material.

Washing soda is chemically represented by

Carbon content of pitch (residue of coal tar distillation) is around __________ percent.

The chamber process is

The temperature in the calcium carbide furnace is __________ °C.

Carboxymethyl cellulose (CMC) is added in detergents to act as a/an

Na2CO3 is called

Starting raw material for the manufacture of alum is

Wax is a

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

Polythene is a/an __________ polymerisation product.

L.D. converter is used in the production of

For the hydrogenation of oils, __________ (i) __________ is commonly used as catalyst and __________ (ii) __________ is a catalyst poison.

Teflon is

Commonly used glass is known as the __________ glass.

Which is a high grade pulp?

Synthesis gas is a mixture of

Pick out the wrong statement.

Commercially ethylene is produced from naphtha by

Sudden temperature fluctuation does not affect pyrex glass, because of its

Commercial production of calcium carbide requires limestone and __________ as raw materials.

Which of the following is not an antibiotic?

Nickel is not used as a catalyst in the __________ reaction.

Solvay process as compared to dual process(i.e. modified Solvay process).

Yellow glycerine is made into white, using

Magnesium and calcium __________ cause temporary hardness of water.

Chloramines are used in water treatment for

Chrome tanning and vegetable tanning are done for

Also checkout

Commercial scale production of hydrogen from iron-steam reaction represented by, 3Fe + 3H₂O = Fe₃O₄ + 4H₂, is not practised, as it is

For the hydrogenation of oils, (i) is commonly used as catalyst and (ii) is a catalyst poison.

Solvay process as compared to dual process
(i.e. modified Solvay process).