General Science : Chemistry Question and Answer

1. The scientist who arranged elements in order of increasing atomic mass, was

A. Dobereiner
B. Dalton
C. Newlands
D. Mendeleev

C. Newlands

2. Atomic radius is measured by

A. Centimeter
B. Millimeter
C. Picometer
D. Meter

C. Picometer

3. Steel is manufactured from pig iron in a

A. Bessemer converter
B. Blast furnace
C. Tank furnace
D. None of the above

A. Bessemer converter

4. Soda glass is also known as

A. Hard glass
B. Soft glass
C. Crystal glass
D. White glass

B. Soft glass

5. When Gamma rays are emitted

A. Mass of atom changes, atomic number remains same.
B. Atomic number changes, mass of atom remain same.
C. No change in atomic number and mass of atom.
D. Atomic number and mass of atom changes.

C. No change in atomic number and mass of atom.

6. Which of the following compounds is ionic?

A. HF
B. HCl
C. CCl₄
D. BaCl₂

D. BaCl2

7. Which of the following substances in aqueous solution will conduct electricity ?

A. Ethanol
B. Zinc Chloride
C. Sugar
D. Urea

B. Zinc Chloride

8. The second most abundant metal in the earth's crust is

A. Tin
B. Copper
C. Aluminum
D. Iron

D. Iron

9. Natural gas consists mainly of

A. Helium
B. Methane
C. Hydrogen
D. Carbon monoxide

B. Methane

10. Solder is an alloy of

A. Zinc and Copper
B. Copper and Tin
C. Lead and Tin
D. Iron and Nickel

C. Lead and Tin