Jamb Chemistry 2015 Past Questions and Answers

Question 61:

• JAMB 2015

According to the kinetic theory an absence in temperature causes the kinetic energy of particles to

A. Decrease
B. Increase
C. Remain constant
D. Be zero

Question 62:

• JAMB 2015

N₂O_4(g)→ 2NO_2(g)
In the endothermic reaction above, more products formed will be favored by

A. A constant values
B. An increase in pressure
C. A decrease pressure
D. A decrease volume

Question 63:

• JAMB 2015

Chlorine gas turns damp starch-iodide paper

A. Pink
B. Colourless
C. Red
D. Dark blue

Question 64:

• JAMB 2015

Chlorine consisting of two isotope of mass number 35 and 37 in the ratio 3:1 has an atomic mass of 35.5. Calculate the relative abundance of the isotope of mass number 37

A. 20
B. 25
C. 60
D. 75

Question 65:

• JAMB 2015

The principal constituent of natural gas is

A. Methane
B. Ethane
C. Propane
D. Butane