Chemistry

Question 1

1The test for carbon in an organic compound is to burn it and pass the gas into

Easy

A. bromine water B. litmus C. iodine solution D. lime water, which turns milky

Question 2

2The IUPAC name of CH₃CH₂CH₃ is

Easy

A. propane B. propene C. ethane D. butane

Question 3

3A series of organic compounds with the same functional group is a

Easy

A. polymer B. periodic group C. homologous series D. mixture

Question 4

4The –COOH group is the functional group of

Easy

A. alkanoic (carboxylic) acids B. alkanols C. ketones D. esters

Question 5

5An organic compound decolourises bromine water. This shows that it

Easy

A. is an alkane B. is a salt C. contains no carbon D. contains a C=C double bond (is unsaturated)

Question 6

6A hydrocarbon contains 85.7% carbon by mass. Its empirical formula is

Hard

A. CH B. C₂H₃ C. CH₂ D. CH₃

Question 7

7The functional group –OH is found in

Easy

A. alkanes B. alkanols (alcohols) C. alkenes D. alkanoic acids only

Question 8

8The functional group C=O in an aldehyde is found

Hard

A. in a ring only B. attached to oxygen C. in the middle of the chain D. at the end of the carbon chain

Question 9

9Compounds with the same molecular formula but different structures are

Easy

A. allotropes B. isomers C. homologues D. isotopes

Question 10

10What is the general formula of the alkanes?

Easy

A. CₙH₂ₙ₊₂ B. CₙH₂ₙ C. CₙH₂ₙ₋₂ D. CₙH₂ₙ₊₁OH