Neco Physics 2009 Past Questions and Answers

Question 16:

• NECO 2009

The space between the two walls of a vacuum flask is completely evacuated to reduce heat loss by ____________

A. Condensation
B. Conduction
C. Convection
D. Evaporation
E. Radiation

Question 17:

• NECO 2009

Which of the following substances undergoes sublimation?

A. Ether
B. Ice
C. Iodine
D. Naphthalene
E. Turpentine

Question 18:

• NECO 2009

Determine the value of x from the nuclear reaction below,

\(^{222}_{86}Rn\) → \(^{x}_{88}Ra\) + 2β + energy

A. 220
B. 222
C. 224
D. 226
E. 228

Question 19:

• NECO 2009

Which of the following statements about the pressure in a liquid is NOT correct? It ____________

A. Acts in all direction
B. Changes with the material of the container
C. Is the same at all points in the same horizontal plane
D. Varies with the density of the liquid
E. Varies with the depth of the liquid

Question 20:

• NECO 2009

In which of the following fields is repulsion NOT experienced?

A. Electrical only
B. Gravitational only
C. Magnetic only
D. Magnetic and electrical
E. Magnetic and gravitational