Chemistry

Question 1

1The functional group of the alkanols is

Easy

A. −COOH B. −OH C. −CHO D. C=C

Question 2

2The products of complete combustion of methane are

Easy

A. carbon and hydrogen B. carbon monoxide and water C. carbon dioxide and water D. methanol

Question 3

3Ethene decolourises bromine water because it

Easy

A. is a salt B. is an alkane C. is an acid D. is unsaturated (has a C=C double bond)

Question 4

4The number of isomers of C₅H₁₂ is

Hard

A. 5 B. 3 C. 2 D. 4

Question 5

5The reaction of ethene with hydrogen over nickel is

Hard

A. polymerisation B. cracking C. hydration D. hydrogenation

Question 6

6The functional group of the alkanols (alcohols) is

Easy

A. −NH₂ B. −COOH C. −CHO D. −OH

Question 7

7The reaction of ethene with steam in the presence of H₃PO₄ produces

Hard

A. ethyl ethanoate B. ethanoic acid C. ethanol D. ethane

Question 8

8Which compound exhibits cis–trans isomerism?

Hard

A. but-2-ene B. propene C. but-1-ene D. ethene

Question 9

9The functional group –CHO is found in

Hard

A. alkanols B. alkanoic acids C. alkanones D. alkanals

Question 10

10How many structural isomers does C₄H₉OH (alkanols) have?

Hard

A. 4 B. 3 C. 5 D. 2