Chemistry - Mock Test 25

Question 241

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 242

Electrolyte used for tin plating is ?

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

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Question 243

Corrosion can be prevented by ?

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

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Question 244

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

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

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Question 245

Process in which substance gains electrons is called ?

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

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Question 246

As we move across period basic character of oxides ?

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

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Question 247

Boron is a ?

A) metal B) metalloid C) non-metal D) gas

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Question 248

Metallic oxides are ?

A) basic in nature B) acidic in nature C) slightly acidic in nature D) neutral

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Question 249

Non-metals are poor conductors of ?

A) heat B) electricity C) both A and B D) none of above

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Question 250

Tendency of a metal to loose electron is called ?

A) electronegativity B) electro positivity C) electroplating D) electrolysis

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