Jamb Chemistry Past Questions and Answers

Question 1946:

• JAMB 2017

The carbon atoms on ethane are

A. Sp² hybridized
B. Sp³ hybridized
C. Sp⁴ hybridized
D. Sp hybridized

Question 1947:

• JAMB 2017

According to Charle's law, the volume of a gas becomes zero at

A. −100°c
B. −273°c
C. −373°c
D. 0°c

Question 1948:

• JAMB 2017

An oxide XO₂ has a vapour density of 32. What is the atomic mass of X?

A. 20
B. 32
C. 14
D. 12

Question 1949:

• JAMB 2017

The gas that can be collected by downward displacement of air is

A. Chlorine
B. Sulphur (IV) oxide
C. Carbon (IV) oxide
D. Ammonia

Question 1950:

• JAMB 2017

In the laboratory preparation of trioxonitrate (V) acid the nitrogen(iv) oxide formed as a by-product is removed by

A. Further heating
B. Adding concentrated H₂SO₄
C. Cooling the acid solution with cold water
D. Bubbling air through the acid solution