Which one is metal?

A. Gypsum
B. Iron
C. Limestone
D. granite

Answer

Answer

B. Iron

Submitted by: Toheed Ahmed

Silica is used in ______?

A. Plastic making
B. Iron making
C. Glass making
D. Wood making

Answer

Answer

C. Glass making

Submitted by: Toheed Ahmed

Plutonium is used as ________?

A. Fuel for nuclear fission
B. Fuel for nuclear fusion
C. Source of chemical energy
D. Source of light energy

Answer

Answer

A. Fuel for nuclear fission

Submitted by: Toheed Ahmed