The degree of dissociation of an electrolyte depends on
A. Dilution
B. Impurities
C. Atmospheric pressure
D. Method of dissolution
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In the electroplating of gold, the electrolyte used is
A. Gold chloride
B. Gold nitrate
C. Gold sulphate
D. Potassium aurocyanide
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The deterioration of a metal by an electrochemical process is commonly termed as
A. Erosion
B. Corrosion
C. Passivation
D. Abrasion
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Aqueous solution of which of the following is a good conductor of electricity
A. Ammonium acetate
B. Glucose
C. Ammonia
D. Acetic acid
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The cathode of a lead storage battery is made up of
A. Zinc
B. Lead
C. Lead oxide
D. Manganese dioxide
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When a lead storage battery is discharged,
A. SO2 is evolved
B. Lead sulphate is consumed
C. Lead is formed
D. Sulphuric acid is consumed
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Which of the following pairs of materials serves as electrodes in rechargeable batteries commonly used in devices such as torch lights, electric shavers, etc. ?
A. Iron and cadmium
B. Nickel and cadmium
C. Lead peroxide and lead
D. Zinc and carbon
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In a Carbonyl group a carbon atom makes double bond with
A. Carbon
B. Oxygen
C. Hydrogen
D. None of the above
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Williamson's synthesis is widely used in the laboratory preparation of
A. Alcohols
B. Ethers
C. Aldehydes
D. Esters
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German silver, an alloy, does not contain the metal
A. Nickel
B. Zinc
C. Copper
D. Silver
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Carborundum is another name of
A. Silicon carbide
B. Silicon oxide
C. Calcium carbide
D. Calcium oxide
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German silver is an alloy of
A. Copper, nickel and silver
B. Silver, copper and aluminium
C. Zinc, copper and nickel
D. Zinc, silver and copper
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Which one of the following does not contain Silver ?
A. Ruby Silver
B. Lunar Caustic
C. German Silver
D. Horn Silver
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Type metal used in printing press is an alloy of
A. Lead and copper
B. Lead and antimony
C. Lead and bismuth
D. Lead and zinc
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Ultra purification of a metal is done by :
A. Slugging
B. Zone melting
C. Smelting
D. Leaching
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Brass gets discoloured in air due to constant exposure in presence of:
A. Aluminium phosphide
B. Hydrogen sulphide
C. Hydrogenated wafers
D. Aluminium sulphide
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Which of the following is not present in German silver?
A. Copper
B. Nickel
C. Silver
D. Zinc
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Haloarenes are more stable than haloalkanes due to
A. Resonance effect
B. Inductive effect
C. Hyper conjugative effect
D. All of them
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The unit of ionic product of water (Kw) is :
A. Mol2 let-1
B. Mol2 let-2
C. Mol-1 let-2
D. Mol-1 let-1
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Aluminium chloride is
A. Bronsted Lowry Acid
B. Arrhenius Acid
C. Lewis Acid
D. Lewis Base
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