Chemistry

Sugars can be hydrolyzed at room temperature by the action of?

A. mineral acids B. strong bases C. enzymes D. oxidants Correct Answer: Option A A. mineral acids

6 years ago

What is the function of H2SO4 in the following reaction? C12H22O11 conc. H2SO4 → 12C + 11H2O

A. Oxidizing agent B. Strong acid C. Dehydrating agent D. Catalyst Correct Answer: Option C D. Catalyst

6 years ago

Which of the following polymers contains nitrogen?

A. Nylon B. Polyvinyl chloride C. Polyethene D. Cellulose Correct Answer: Option A A. Nylon

6 years ago

One of the products of combustion of pentane in excess air is?

A. pentanol B. pentene C. nitrogen (ll) oxide D. carbon (IV) oxide Correct Answer: Option D D. carbon (IV) oxide

6 years ago

Benzene produces more soot than ethene on burning because benzene?

A. has a higher molar mass B. has a higher degree off unsaturation C. undergoes substitution and addition reactions D.…

6 years ago

Hydrogenation of butene yields?

A. butyne B. butane C. pentene D. butanol Correct Answer: Option B B. butane

6 years ago

A feasible cell was constructed by joining the two half cells below. Cu²+ (aq) + 2e‾ → Cu(s) E° = – 0.76 V. What is the standard e.m.f. of the cell?

A. - 1.1V B. - 0.42V C. +0.42V D. +1.1V Correct Answer: Option D D. +1.1V Explanation e.m.f. = +…

6 years ago

In the electrolysis of CuSO4(aq) using copper electrodes, the reaction at the anode is?

A. discharge of SO4²‾ B. discharge of OH‾ C. dissolution of copper electrode D. evolution of oxygen Correct Answer: Option…

6 years ago

Given that the order of reactivity of four metals is P>Q>R>S, which of the following reactions is feasible?

A. S + P+ → P + S + B. Q + S+ → S + Q+ C. R +…

6 years ago

A concentrated solution containing H+, Cu²+, OH‾ and CI‾ was electrolysed using platinum electrodes which of the ions will be discharged at the cathodes?

A. H+ B. Cu²+ C. OH‾ D. CI‾ Correct Answer: Option B B. Cu²+

6 years ago
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