Jamb Physics 2018 Past Questions and Answers

Question 66:

• JAMB 2018

Mercury which is spilled onto a glass surface forms ball-like shapes because____.

A. Mercury is a metal
B. The cohesive force between its molecules is greater than the adhesive force between mercury and glass molecules
C. The cohesive force between its molecules is less than the adhesive force between mercury and glass molecules
D. The viscosity of mercury is height

Question 67:

• JAMB 2018

Water of mass 150g at 60\(^o\)c is added to 300g of water at 20\(^o\)c and the mixture is well stirred. Calculate the temperature of the mixture.(neglect heat losses to the surroundings)

A. 33\(^o\)c
B. 40\(^o\)c
C. 25\(^o\)c
D. 10\(^o\)c

Question 68:

• JAMB 2018

Which of the following phenomena is the practical evidence for the existence of the continual motion of molecules.

A. Transitional Motion
B. Rotational Motion
C. Brownian Motion
D. Oscillatory Motion

Question 69:

• JAMB 2018

The process by which protons are converted into helium atoms with a tremendous release of energy is called?

A. Thermionic emission
B. Nuclear fission
C. Thermonuclear fusion
D. Photoelectric emission

Question 70:

• JAMB 2018

Which of the following is not a product of nuclear fusion?

A. X – ray
B. Y –ray
C. α – particles
D. Neutron