Chemistry

The reaction of an alkanol with alkanoic acid is known as?

A. dehydration B. esterification C. halogenation D. hydrogenation E. saponification Correct Answer: Option B - esterification

4 years ago

Which of the following statements is NOT correct of group VII elements? They

A. are diatomic B. are good oxidizing agents C. are highly electronegative D. have high electron affinity E. have relatively…

4 years ago

Which of the following is NOT a fraction of petroleum?

A. Bitumen B. Coal C. Diesel D. Kerosene E. Petrol Correct Answer: Option B - Coal

4 years ago

The scientist who discovered the zig-zag movement of gas molecules is?

A. Brownian B. Dalton C. Gay Lussac D. Graham E. Newton Correct Answer: Option A - Brownian

4 years ago

The following compounds decolourize acidified potassium tetraoxomanganate (VII) solution except?

A. HOCH2 – CH2OH B. H2C –C =C– CH3 C. H3C – HC = CH2 D. H2C = CH2 E. H3C…

4 years ago

The percentage composition of a hydrocarbon is 79.2 carbon 20.8 hydrogen. Calculate its empirical formula [H = 1, C = 12]

A. CH B. CH3 C. CH4 D. C2H2 E. C2H6 Correct Answer: Option B - CH3 Explanation Relative No of…

4 years ago

Which of the following equations is NOT balanced?

A. CH4(g) + 2O2(g) → CO2(g) + 2H2O(g) B. CU(S) + HNO3(aq) → Cu(NO3)2(aq) + 4H2O(I) + NO(g) C. 2KCIO3(s)…

4 years ago

Compound with the general formula CnH2n2 belong to the_______ group

A. alkanal B. alkane C. alkanoate D. alkene E. alkyne Correct Answer: Option E - alkyne

4 years ago

The process involved in the decomposition of sugar by an enzyme is called?

A. dehydration B. esterification C. fermentation D. polymerization E. saponification Correct Answer: Option C = fermentation

4 years ago

A colourless gas with characteristics odour which dissolves in water to form an alkaline solution is?

A. ammonia B. carbon(IV)oxide C. hydrogen chloride D. sulphur (IV) oxide E. sulphur (VI) oxide Correct Answer: Option A -…

4 years ago