NECO Past Questions and Answers - Page 179

891.

Which of the following will NOT bring about an increase in Labour force?

A.

Better medical services

B.

Decrease in death rate

C.

Emigration

D.

Immigration

E.

Increase in birth rate

Correct answer is C

No explanation has been provided for this answer.

892.

An effort P applied at one end of a crowbar just overcomes the resistance W at the lid of a tin. The mechanical advantage of the crowbar is expressed as

A.

W + P

B.

P - W

C.

\(\frac{w}{p}\)

D.

\(\frac{p}{w}\)

E.

wp

Correct answer is C

No explanation has been provided for this answer.

894.

Which of the following pairs of musical instruments produce sound due to the vibration of air column?

A.

Bell and piano

B.

Guitar and flute

C.

Trumpet and drum

D.

Trumpet and flute

E.

Violin and organ

Correct answer is D

No explanation has been provided for this answer.

895.

Stock exchange market deals with

A.

Exchange of commodities

B.

Exchange of stock fish for stock

C.

Exchange of treasury bills

D.

Sales of foreign exchange

E.

Sales of second hand securities

Correct answer is E

No explanation has been provided for this answer.