Jamb Chemistry 2015 Past Questions and Answers

Question 41:

• JAMB 2015

The elements that belong to the third period of periodic table are

A. Li, Be, Al and D
B. Na, P, O and Cl
C. B, C, N, and O
D. Na, Mg, S and Ar

Question 42:

• JAMB 2015

When sugar is dissolve in ten, the reaction is accomplished by

A. Positive change
B. Negative entropy change
C. No entropy change
D. A minimum entropy change

Question 43:

• 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 44:

• JAMB 2015

Detergents are manufacture with strength hydrocarbon chains is to make them

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

Question 45:

• 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