Jamb Chemistry Past Questions and Answers

Question 1831:

• JAMB 2015

NH_3(g) + HCl_(s) → NH ₄Cl _(s)
The entropy change in the system above is

A. Positive
B. Zero
C. Negative
D. Intermediate

Question 1832:

• JAMB 2015

Detergents are manufacture with strength hydrocarbon chains is to make them

A. Soluble
B. Biodegradable
C. Cheaper
D. Foamy

Question 1833:

• JAMB 2015

Which of the following results in the fall of acid rain?

A. Oxide of lead
B. Particulate matter
C. Oxides of sulphur
D. Gaseous hydrocarbon

Question 1834:

• JAMB 2015

The furring of kettles is caused by the presence in the water of

A. Calcium tetraoxosulphate (IV)
B. Calcium hydrogentrionocarbonate (IV)
C. Calcium hydroxide
D. Calcium trioxocarbonate (IV)

Question 1835:

• JAMB 2015

A difference between chemical and physical change is that in a chemical change

A. Oxygen is consumed
B. Heat is supplied
C. The reversible process occurs
D. A new substance is formed