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Chlorine gas is produced by the electrolysis of brine (NaCl solution with solid NaCl make up) in mercury electrolytic cell. Which of the following is the anodic reaction?

A. Oxidation of Na+ ions

B. Oxidation of Cl- ions

C. Reduction of Na+ ions

D. Reduction of Cl- ions

Correct Answer :

B. Oxidation of Cl- ions


Related Questions

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Ethanol amine is produced using ammonia and

A. Ethyl benzene

B. Ethylene oxide

C. Ethanol

D. Ethane

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Poly Vinyl Chloride (P.V.C.) is a __________ material.

A. Thermosetting

B. Thermoplastic

C. Fibrous

D. Chemically active

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Mercury electrolytic cell produces 50-70% NaOH solution. Its operating temperature is __________ °C.

A. 25

B. 60-70

C. 150-200

D. 250-300

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Nitric acid is not used in the manufacture of

A. Detergents

B. Fertilisers

C. Aqua regia

D. Explosives

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Alkylbenzene sulfonate (ABS) is a

A. Detergent

B. Rubber

C. Pesticide

D. Polyester

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Higher viscosity index of a lubricating oil denotes

A. Less changes in fluidity of oil with temperature

B. Substantially high change in fluidity of oil with temperature

C. Its unsuitability under varying temperature conditions

D. None of these

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The most stable allotropic form of phosphorous is the __________ phosphorous.

A. White

B. Black

C. Yellow

D. Red

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Which of the following is a bleaching agent added in the detergents to facilitate removal of stains caused due to blood, tea etc?

A. Sodium silicate

B. Sodium borate

C. Sodium tripolyphosphate (STPP)

D. Caustic soda

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Co-efficient of thermal expansion of glass is decreased by the addition of __________ during its manufacture.

A. CaO

B. MnO2

C. ZnO

D. FeS

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Glass is

A. Mainly CaO

B. Subjected to galvanising

C. A super cooled liquid

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

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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

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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4

Chlorine gas is produced by the electrolysis of brine (NaCl solution with solid NaCl make up) in mercury electrolytic cell. Which of the following is the anodic reaction?

A. Oxidation of Na+ ions

B. Oxidation of Cl- ions

C. Reduction of Na+ ions

D. Reduction of Cl- ions

What is the correct answer?

4

10% oleum comprises of 10% free

A. SO2

B. H2SO3

C. SO3

D. H2SO4

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4

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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Fusion of bauxite and __________ produces high alumina cement.

A. Alum

B. Limestone

C. Coke

D. Quartz

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Flux addition during smelting of ore is done to

A. Remove impurities/gangue

B. Enhance rate of reaction

C. Accelerate reduction of ore

D. Separate slag from metal

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Phthalic anhydride is used

A. In making PVC

B. As plasticisers

C. In insecticides manufacture

D. For making nylon-6

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Resistance to fusion of the refractory under a steady rising temperature condition is called

A. Spalling

B. Refractoriness

C. Both (A) & (B)

D. Neither (A) nor (B)

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The most popular and common detergent i.e., alkyl benzene sulfonate (ABS) is a/an __________ detergent.

A. Cationic

B. Anionic

C. Amphoteric

D. Semi polar

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4

Molecular weight of plastics ranges from

A. 5000 to 10000

B. 20000 to 250000

C. 500 to 5000

D. 106 to 109

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Vulcanisation of rubber

A. Decreases its tensile strength

B. Increases its ozone & oxygen reactivity

C. Increases its oil & solvent resistance

D. Converts its plasticity into elasticity

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Flexible foam (for mattresses) is usually made of

A. PVC

B. Silicone

C. Polyurethanes

D. Polyamides

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Oil is a/an

A. Mixture of glycerides

B. Mixture of glycerides of fatty acids

C. Solid at normal temperature

D. Ester of alcohols other than glycerine

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Phosphate rock is a raw material for the manufacture of

A. Phosphoric acid

B. Phosphorous

C. Superphosphates

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

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Setting of plaster of Paris is accompanied with

A. Hydration

B. Dehydration

C. Hydrolysis

D. Loss of CO2

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Nylon-6 is a

A. Polyamide

B. Thermosetting resin

C. Polyester

D. None of these

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Hollander beater used during paper pulp manufacture does not facilitate the __________ of fibre.

A. Cutting

B. Fibrillation

C. Hydration

D. Strengthening

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__________ of quicklime produces slaked lime.

A. Hydration

B. Dehydration

C. Hydrogenation

D. None of these

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Saponification number of an oil or fat

A. Gives an idea about its molecular weight

B. Is inversely proportional to its molecular weight

C. Detects its adulteration

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