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4

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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4

Permanent hardness of water can be removed by

A. Addition of soda ash to it

B. Treating it with zeolites

C. Passing it through sodium hexametaphosphate

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

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4

Very dilute solutions are generally used in fermentation reactions for which the optimum temperature range is __________ °C.

A. -5 to 0

B. 5 to 10

C. 30 to 50

D. 75 to 80

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4

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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4

Good quality of edible salt is obtained from brine by the process of

A. Solar evaporation

B. Vacuum evaporation

C. Freeze drying

D. Electrolysis

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4

CaSO4 . ½H2O is known as

A. Blue vitriol

B. Plaster of Paris

C. Gypsum

D. Zeolite

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4

Starting material for the commercial production of ethyl alcohol in India is

A. Rice

B. Molasses

C. Fruit of Mahua tree

D. Maize

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4

Naphthols are derivates of

A. Methyl amine

B. Naphthalene

C. Phenol

D. Xylene

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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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4

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

A. Lead

B. Borosilicate

C. Soda lime

D. Alkali silicate

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4

Hydrogen gas is not produced commercially (for nitrogenous fertiliser manufacture) by

A. Iron-steam reaction

B. Electrolysis of water

C. Steam reforming of naphtha

D. Its cryogenic separation from coke oven gas

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4

__________ is a thermosetting plastic.

A. Polythene

B. Epoxy polymer

C. P.V.C.

D. Polystyrene

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4

Rotary kiln is not involved in the production of

A. Cement

B. Lime from limestone

C. Slaked lime from quick lime

D. None of these

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4

Pick out the wrong statement.

A. Cold rubber (SBR) is superior as compared to hot rubber (SBR)

B. Polymerisation temperature can modify the properties of SBR

C. Production of cold SBR employs lower pressure as compared to that of hot SBR

D. None of these

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4

Catalytic oxidation of toluene produces

A. Styrene

B. Phenol

C. Benzene

D. Tri-nitro-toluene

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4

Salt cake is chemically represented by

A. Na2SO4

B. CaSO4. ½H2O

C. MgSO4

D. BaSO4

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4

Major component of flint glass is

A. Lead oxide

B. Silica

C. Alumina

D. Soda

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4

Raw material used in alcohol distilleries in India is

A. Molasses

B. Benzol

C. Methylated spirit

D. None of these

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4

__________ process is used for producing soda ash.

A. Chamber

B. Chance

C. Tromp

D. Solvay

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4

Shrinkage volume in cement setting does not depend upon the

A. Sand to cement ratio

B. Water to cement ratio

C. Ambient temperature fluctuation

D. Drying period

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4

Wood charcoal is used for decolouration of sugar, because it __________ the coloured materials.

A. Adsorbs

B. Oxidises

C. Reduces

D. Converts

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4

Absorption of SO3 in 97% H2SO4 is

A. Exothermic

B. Endothermic

C. Not possible

D. None of these

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4

Hydrophilic group of a soap or detergent solution is

A. Water hating

B. Soil loving

C. Water loving

D. None of these

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4

Chemical formula of oleum is

A. H2SO3

B. H2SO4

C. H2S2O7

D. H2SO7

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4

The catalyst used in the manufacture of DDT is

A. Alumina

B. Silica

C. 20% oleum

D. Aluminium chloride

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4

Extraction of __________ employs an electrolytic process.

A. Aluminium

B. Silver

C. Copper

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

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4

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

A. 30

B. 50

C. 70

D. 90

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4

Pick out the wrong statement.

A. Wine, rum & Vodka are prepared by the formulation of fruit juice, sugar beet & rye respectively

B. Protein catalysts are called enzymes

C. The rate of chemical reaction is independent of the concentration of reactants at high concentration of enzymes

D. Total sugar content in molasses is about 10%

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4

Coke used for the production of calcium carbide should have

A. Low ash content

B. Low ignition temperature

C. High electrical resistivity

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

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4

BHC (Benzene hexachloride) is made by the chlorination of benzene

A. Which is an addition reaction

B. Which is a substitution reaction

C. In absolute dark

D. In presence of sunlight

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4

Which of the following is not produced commercially from sea water?

A. Magnesium & potassium compounds

B. Common salt

C. Bromine

D. Iodine