Dynamo is a device that converts

A. Mechanical energy into electrical energy
B. Electrical energy into mechanical energy
C. Alternating current into direct current
D. Heat energy into electrical energy

Answer

A. Mechanical energy into electrical energy

Submitted by: Toheed Ahmed

Pure gold is _________?

A. 20 carat
B. 17 carat
C. 24 carat
D. 36 carat

Answer

C. 24 carat

Submitted by: Toheed Ahmed

Earth’s crust have the abundant reserves of

A. Iron, silicon and nitrogen
B. Silicon, oxygen and aluminium
C. Iron, silicon and oxygen
D. Silicon, nitrogen and aluminium

Answer

B. Silicon, oxygen and aluminium

Submitted by: Toheed Ahmed