Chemistry

First controlled fission of an atom was carried out in ________ on 1938.

A. U.S

B. Germany

C. Russia

D. U.K

Nuclear sizes are expressed in a unit named?

A. Tesla

B. Force

C. Fermi

D. Newton

Balloons are filled with _________ ?

A. Nitrogen

B. Helium

C. Oxygen

D. Argon

For galvanizing of iron which of the following metals is used ?

A. Alu minimum

B. Copper

C. Zinc

D. Lead

Which of the following is the lightest substance?

A. Uranium

B. Hydrogen

C. Oxygen

D. Nitrogen

Which of these is NOT an example of a renewable energy source?

A. Wind energy

B. solar

C. Coal

D. Hydroelectric power

Crude Oil is heated in the furnace up to _________?

A. 300°C

B. 350°C

C. 400°C

D. 450°C

Symbol of Iron is__________?

A. Na

B. Fr

C. Fe

D. Zn

Carbon dioxide was discovered by_______?

A. Niels Bohr

B. Amedeo Avogadro

C. Joseph Black

D. None of Above

Which of the following is solid?

A. Water

B. Stone

C. Both

D. None