Cooking oil can be converted into vegetable ghee by the process of

A). Oxidation

B). Hydrogenation

C). Distillation

D). Crystallization

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The contact process is involved in the manufacture of —

A). Nitric acid

B). Sulfuric acid

C).  Ammonia

D). Caustic soda

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An alloy is used in making heating elements for electric heating devices is —

A). Solder

B). Alloy steel

C). Nichrome

D). German silver

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German Silver is an allow of —

A). Copper, Silver and Nickel

B). Silver, Copper and Aluminum

C). Zinc, Copper and Nickel

D). Silver, Zinc and Nickel

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Air is a/an—

A). Compound

B). Element

C). Mixture

D). Electrolyte

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Which of the following substance is a bad conductor of electricity but a good conductor of heat?

A). Asbestos

B). Celluloid

C). Purspecks

D). Mica

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Carborundum is —

A). Silicon Dioxide

B).  Silicon Carbide

C). Silicon Nitride

D). Silicon Phosphide

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Which of the following is the best conductor of electricity?

A). Copper

B). Mica

C). Zinc

D). Silver

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Soda water contains—

A). Nitrous acid

B). Carbonic acid

D). Carbon dioxide

D). Sulfuric acid

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Which of the following is the basis of the modern periodic table?

A). Atomic mass

B). Atomic number

C). Atomic size

D). Atomic volume