Chemistry - Comprehensive Mock Test 20

Question 191 Easy

An electrochemical cell is also called ?

A) battery cell B) galvanic cell C) cell D) chargeable cell

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Question 192 Easy

In a dry cell anode is made up of ?

A) zinc B) calcium C) sodium D) graphite

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Question 193 Medium

Elements whose oxidation number is increased are ?

A) reduced B) hydrogenated C) oxidized D) none of above

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Question 194 Easy

Loss of hydrogen atoms by an element is called ?

A) hydrogenation B) oxidation C) reduction D) sublimation

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Question 195 Medium

An electrolytic cell uses electrical energy to drive ?

A) chemical reaction B) physical reaction C) no reaction D) none of above

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Question 196 Easy

Electrolyte used for tin plating is ?

A) sulphide ore B) stannous sulphate C) hydrogen sulphate D) sodium chloride

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Question 197 Easy

Corrosion can be prevented by ?

A) Alloying B) Tinning C) Galvanizing D) all of above

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Question 198 Medium

On industrial scale sodium metal is prepared by electrolysis of fused ?

A) NaOH B) NaCl C) NaO D) NH3

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Question 199 Medium

Process in which substance gains electrons is called ?

A) oxidation B) hydrogenation C) sublimation D) reduction

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Question 200 Medium

As we move across period basic character of oxides ?

A) increases B) remains same C) decreases D) becomes zero

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