Chemistry

A trihydric alkanol is?

A. Glycerol B. Phenol C. Glycol D. Ethanol Correct Answer: Option A - Glycerol

4 years ago

Catalytic hydrogenation of benzene produces?

A. Oil B. Cyclohexene C. Cyclohexane D. Margarine Correct Answer: Option C - Cyclohexane

4 years ago

During the vulcanization of rubber; sulphur is added to?

A. Break down rubber polymer B. Lengthen the chain of rubber C. Bind rubber molecules together D. Act as a catalyst Correct Answer:…

4 years ago

The main impurity in iron ore during the extraction of iron is?

A. Silicon (IV) oxide B. Carbon (IV) oxide C. Calcium trioxosilicate D. Sulphur (II) oxide Correct Answer: Option A - Silicon (IV) oxide

4 years ago

The general formula for the alkanals is?

A. ROH B. R2CO C. RCOOR¹ D. RCHO Correct Answer: Option D - RCHO

4 years ago

Fermentation is the?

A. breaking down of carbohydrate to glucose B. conversion of sugar to alcohol in the presence of yeast C. breaking down of…

4 years ago

NH3(g) + HCl(g) → NH4Cl(s). The entropy change in the system below is?

A. negative B. indeterminate C. positive D. zero Correct Answer: Option A - negative

4 years ago

In which of the following reactions has the oxidation number of nitrogen increased?

A. 2NO(g) + Br2(l) → 2NOBr(l) B. 2NO(g) + O2(g) → 2NO2(g) C. FeSO4(aq) + NO(g) → Fe(NO)SO4(s) D. 2NO(g) + Cl2(g) → 2NOCl(l) Correct Answer: Option B…

4 years ago

As the concentration of an electrolyte reduces; the conductivity?

A. reduces to zero B. decreases C. increase D. is unaffected Correct Answer: Option C = increase

4 years ago

In the equation below; copper is?

3Cu(s) + 8HNO3(aq) → 3Cu(NO3)2(aq) + 4H2O(l) + 2NO(g) A. an electron acceptor B. a base C. an oxidizing agent…

4 years ago