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Sucrose content in the raw juice extracted from sugar cane is about __________ percent.

A. 1 - 2

B. 15 - 20

C. 50 - 60

D. 80 - 85

Correct Answer :

B. 15 - 20


Related Questions

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Bleaching action of bleaching powder is due to its __________ properties.

A. Reducing

B. Oxidising

C. Disinfecting

D. None of these

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Starting material for the production of butadiene in India is

A. Naphthalene

B. Benzol

C. Ethyl alcohol

D. Phthalic anhydride

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Dry ice (solidified CO2) is used for the

A. Storage & shipment of frozen foods and ice-creams

B. Liquefaction of permanent gases

C. Liquefaction of natural gas

D. None of these

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4

Pitch (a product of coal tar distillation) is always mixed with creosote oil, when it is to be burnt in a burner, because

A. Its calorific value is very less

B. Tar neutralises the residual acids present in pitch

C. It reduces viscosity and imparts fluidity for its transportation through pipelines at economic pressure drop

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

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4

Pick out the wrong statement.

A. Hard glass which is used for making laboratory glass wares is a mixture of sodium borosilicate and aluminium borosilicate

B. Glass is decolorized during its manufacture by adding antimony oxide, manganese dioxide or arsenic oxide

C. Ordinary glass is represented chemically by Na2O . CaO . 6SiO2

D. Red color is imparted to glass by addition of arsenic oxide

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Washing soda is chemically represented by

A. Na2CO3

B. Na2CO3.H2O

C. Na2CO3.10H2O

D. NaHCO3

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Chalcopyrite is the main ore of

A. Copper

B. Lead

C. Tin

D. Iron

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

A. Nitric acid

B. Hydrochloric acid

C. Methyl alcohol

D. Formic acid

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Main constituents of natural rubber is

A. Polystyrene

B. Polyisoprene

C. Polybutadiene

D. Polychlorophrene

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In industrial nomenclature, alcohol means

A. Butyl alcohol

B. Propyl alcohol

C. Ethanol

D. Methyl alcohol

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Fire clay is __________ refractory material.

A. A basic

B. An acidic

C. A neutral

D. Not a

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Styrene butadiene rubber (SBR) is

A. A natural rubber

B. A synthetic polymer

C. A synthetic monomer

D. Another name of silicone rubber

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Salt cake is chemically represented by

A. Na2SO4

B. CaSO4. ½H2O

C. MgSO4

D. BaSO4

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Fatty material used in soap making is

A. Fatty acid

B. Fatty alcohols

C. Tallow

D. Detergents

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

A. Neoprene

B. Cumene

C. Gelatin

D. Mercaptans

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The major constituents of glass are

A. Lime, clay and soda ash

B. Sand, lime and soda ash

C. Silica, alumina and clay

D. Silica, alumina and soda ash

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Digestion of wood-base materials (for manufacture of pulp) is done to

A. Remove lignin

B. Produce long fibres

C. Prevent deterioration on storage

D. None of these

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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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Esterification reaction

A. Produces soap

B. Is reversible

C. Is a reaction between an alcohol and an organic acid

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

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Reaction of calcium carbide with water produces a gas, which is used

A. As an illuminant

B. For metal cutting/welding

C. Both (A) & (B)

D. Neither (A) nor (B)

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Concentration of sulphide ores is done usually by

A. Roasting

B. Smelting

C. Froth floatation

D. Electromagnetic separation

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Naphthols are derivates of

A. Methyl amine

B. Naphthalene

C. Phenol

D. Xylene

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What products do we get on electrolysis of saturated brine using steel cathode and graphite anode in an electrolytic cell?

A. Cl2 & Na

B. Cl2 & H2

C. O2 & H2

D. Cl2, H2 & NaOH solution

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Gun powder, which is an explosive comprises of charcoal, sulphur and

A. Glycerine

B. Salt petre

C. Nitro glycerine

D. Dynamite

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Which of the following is not a food additive?

A. Citric acid

B. Invertage

C. Benzoyl peroxide

D. Ammonium chloride

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Potassium is kept & transported under

A. Water

B. Liquid ammonia

C. Kerosene oil

D. Alcohol

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Use of hydrated lime in water treatment

A. Before filtration, reduces the bacterial load on filters

B. After filtration, combats the corrosiveness of water due to the presence of O2 & CO2

C. Is to adjust the pH value

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

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

A. Anthracene

B. Creosote oil

C. Carbolic oil

D. None of these

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The main use of activated carbon in water treatment is to control

A. Bacterial growth

B. Taste and odour

C. Turbidity

D. None of these