Magnesium and calcium __________ cause temporary hardness of water.

Question

Magnesium and calcium __________ cause temporary hardness of water.

A. Carbonates

B. Bicarbonates

C. Phosphates

D. Sulphates

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Pick out the wrong statement.

A. DDT is manufactured by the condensation of chlorobenzene with chloral at 30°C in presence of oleum, which is a highly exothermic reaction

B. Chloral is obtained by the chlorination of ethyl alcohol

C. Insecticides acting on the insects through the respiratory system are called fumigants

D. Benzene hexachloride is not a contact insecticide

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Dacron is a/an

A. Polyester

B. Unsaturated polyester

C. Polyamide

D. Inorganic polymer

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The most reactive allotropic form of phosphorus is __________ phosphorus.

A. Red

B. Yellow

C. Violet

D. Black

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__________ is a thermosetting plastic.

A. Polyvinyl chloride

B. Polythene

C. Bakelite

D. Teflon

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Catalytic oxidation of naphthalene produces

A. Styrene

B. Phenol

C. Phthalic anhydride

D. None of these

Discuss this answer

Fat splitting catalyst is

A. CaCO₃

B. ZnO

C. Al₂O₃

D. Fe

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At a given temperature, the equilibrium yield of SO3 obtained from the oxidation of SO2 is proportional to (where, P = pressure of the system).

A. P

B. √P

C. P²

D. 1/P

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Carbon tetrachloride (CCl₄) is the starting raw material for the manufacture of

A. Trichloroethylene

B. Perchloroethylene

C. Parathion

D. Methanol

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Catalyst used in the manufacture of sulphuric acid by chamber & contact processes are respectively

A. V₂O₅ & Cr₂O₃.

B. Oxides of nitrogen & Cr₂O₃

C. V₂O₅ on a porous carrier & oxides of nitrogen

D. Oxides of nitrogen & V₂O₅ on a porous carrier

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Process conditions in fermentator used for production of penicillin is

A. 25°C, 2 atm

B. 50°C, l0 atm

C. 30°C, 200 mm Hg (absolute)

D. 90°C, 45 atm

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Which of the following contains least amount of N₂?

A. Coke oven gas

B. Blast furnace gas

C. Producer gas

D. Water gas (blue gas)

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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)

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Isopropyl benzene produced by alkylation of benzene with propylene is known as

A. Neoprene

B. Cumene

C. Gelatin

D. Mercaptans

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Main product in calcium carbide-water reaction is

A. Ca(OH)₂

B. C₂H₂

C. CO₂

D. CaCO₃

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Electric bulbs are made of __________ glass.

A. Jena

B. Flint

C. Crookes

D. Pyrex

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Phenolic antiseptics are added in the __________ soap.

A. Shaving

B. Medicated

C. Metallic

D. Transparent

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Styrene (a monomer for the production of polystyrene) is commercially produced by

A. Catalytic dehydrogenation of ethyl benzene

B. Dehydration of ethyl alcohol followed by hydrogenation

C. Reacting ethylene oxide with acetaldehyde

D. Fermentation of starch

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Plasticisers are added to paints to

A. Make it corrosion resistant

B. Make glossy surface

C. Give elasticity & prevent cracking of the film

D. Increase atmospheric oxidation

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Percentage of uranium in Carnotite ore found in Jadugoda (Jharkhand) is about

A. 0.1 to 0.5

B. 1 to 5

C. 5 to 10

D. 15 to 25

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Which catalyst is used in the manufacture of ethylene oxide by oxidation of ethylene?

A. AgO

B. Al₂O₃

C. ZnCl₂

D. Fe₂O₃

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An alkali metal salt of Palmitic acid is known as

A. Soap

B. Metallic soap

C. Detergent

D. Alkaloid

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Which of the following fuel gases contains maximum amount of carbon monoxide?

A. Coke oven gas

B. Water gas

C. Blast furnace gas

D. L.D. converter gas

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Portland cement consists mainly of

A. CaO & SiO₂

B. SiO₂ & Al₂O₃

C. CaO & Al₂O₃

D. CaO & Fe₂O₃

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Detergent is produced by the sulphonation of dodecyl benzene, which is an __________ reaction.

A. Endothermic

B. Exothermic

C. Irreversible

D. Both (B) and (C)

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CO & H₂ are the constituents of

A. Producer gas

B. Water gas

C. Coke oven gas

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

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High temperature carbonisation of coal produces

A. Inferior coke compared to low temperature carbonisation

B. Less of gases compared to liquid products

C. Larger quantity of tar compared to low temperature carbonisation

D. None of these

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Flexible foam (for mattresses) is usually made of

A. PVC

B. Silicone

C. Polyurethanes

D. Polyamides

Discuss this answer

Cement setting under water employs a/an __________ process.

A. Hydration

B. Decomposition

C. Oxidation

D. Reduction

Discuss this answer

Permanent hardness of water can be removed by

A. Boiling

B. Adding Ca(OH)₂

C. Boiling it with Na₂CO₃

D. None of these

Discuss this answer

Insulin is an __________ drug.

A. Anti-malarial

B. Anti-TB

C. Antibiotic

D. None of these

Discuss this answer

Accepted Answer

B. Bicarbonates

Magnesium and calcium __________ cause temporary hardness of water.

Correct Answer :

Show all Chemical Process MCQ

Related Questions

Pick out the wrong statement.

Dacron is a/an

The most reactive allotropic form of phosphorus is __________ phosphorus.

__________ is a thermosetting plastic.

Catalytic oxidation of naphthalene produces

Fat splitting catalyst is

At a given temperature, the equilibrium yield of SO3 obtained from the oxidation of SO2 is proportional to (where, P = pressure of the system).

Carbon tetrachloride (CCl₄) is the starting raw material for the manufacture of

Catalyst used in the manufacture of sulphuric acid by chamber & contact processes are respectively

Process conditions in fermentator used for production of penicillin is

Which of the following contains least amount of N₂?

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

Isopropyl benzene produced by alkylation of benzene with propylene is known as

Main product in calcium carbide-water reaction is

Electric bulbs are made of __________ glass.

Phenolic antiseptics are added in the __________ soap.

Styrene (a monomer for the production of polystyrene) is commercially produced by

Plasticisers are added to paints to

Percentage of uranium in Carnotite ore found in Jadugoda (Jharkhand) is about

Which catalyst is used in the manufacture of ethylene oxide by oxidation of ethylene?

An alkali metal salt of Palmitic acid is known as

Which of the following fuel gases contains maximum amount of carbon monoxide?

Portland cement consists mainly of

Detergent is produced by the sulphonation of dodecyl benzene, which is an __________ reaction.

CO & H₂ are the constituents of

High temperature carbonisation of coal produces

Flexible foam (for mattresses) is usually made of

Cement setting under water employs a/an __________ process.

Permanent hardness of water can be removed by

Insulin is an __________ drug.

Also checkout

Magnesium and calcium __________ cause temporary hardness of water.

Correct Answer :

Show all Chemical Process MCQ

Related Questions

Pick out the wrong statement.

Dacron is a/an

The most reactive allotropic form of phosphorus is __________ phosphorus.

__________ is a thermosetting plastic.

Catalytic oxidation of naphthalene produces

Fat splitting catalyst is

At a given temperature, the equilibrium yield of SO3 obtained from the oxidation of SO2 is proportional to (where, P = pressure of the system).

Carbon tetrachloride (CCl4) is the starting raw material for the manufacture of

Catalyst used in the manufacture of sulphuric acid by chamber & contact processes are respectively

Process conditions in fermentator used for production of penicillin is

Which of the following contains least amount of N2?

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

Isopropyl benzene produced by alkylation of benzene with propylene is known as

Main product in calcium carbide-water reaction is

Electric bulbs are made of __________ glass.

Phenolic antiseptics are added in the __________ soap.

Styrene (a monomer for the production of polystyrene) is commercially produced by

Plasticisers are added to paints to

Percentage of uranium in Carnotite ore found in Jadugoda (Jharkhand) is about

Which catalyst is used in the manufacture of ethylene oxide by oxidation of ethylene?

An alkali metal salt of Palmitic acid is known as

Which of the following fuel gases contains maximum amount of carbon monoxide?

Portland cement consists mainly of

Detergent is produced by the sulphonation of dodecyl benzene, which is an __________ reaction.

CO & H2 are the constituents of

High temperature carbonisation of coal produces

Flexible foam (for mattresses) is usually made of

Cement setting under water employs a/an __________ process.

Permanent hardness of water can be removed by

Insulin is an __________ drug.

Also checkout

Carbon tetrachloride (CCl₄) is the starting raw material for the manufacture of

Which of the following contains least amount of N₂?

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

CO & H₂ are the constituents of