Jamb Chemistry 2014 Past Questions and Answers

Question 1:

• JAMB 2014

A mixture is different from a compound because

A. The properties of a compound are those of its individual constituents while those of a mixture differ from its constituents
B. A mixture is always homogeneous while a compound is not
C. The constituent of a compound are chemically bound together while those of a mixture are not
D. A mixture can be represented by a chemical formula while a compound cannot

Question 2:

• JAMB 2014

A mixture is different from a compound because

A. The properties of a compound are those of its individual constituents while those of a mixture differ from its constituents
B. A mixture is always homogeneous while a compound is not
C. The constituent of a compound are chemically bound together while those of a mixture are not
D. A mixture can be represented by a chemical formula while a compound cannot

Question 3:

• JAMB 2014

What is the percentage of sulphur in sulphur (IV) oxide?

A. 66%
B. 25%
C. 40%
D. 50%

Question 4:

• JAMB 2014

A gas X diffuses twice as fast as gas Y. if the relative molecular mass of X is 32, calculate the relative molecular mass of Y.

A. 128
B. 8
C. 16
D. 64

Question 5:

• JAMB 2014

200 cm³ of a gas at 25^oC exerts a pressure of 700 mmHg. Calculate its pressure if its volume increase 350 cm³ at 75^oC.

A. 342.53 mmHg
B. 1430.54 mmHg
C. 467.11 mmHg
D. 400.00 mmHg