Chemistry Quiz 64 (14 MCQs)

Quiz Instructions

Select an option to see the correct answer instantly.

1. The charge of an electron is

Correct Answer: B) -1.

2. The nucleus of an atom contains

Correct Answer: B) Protons and neutrons.

3. What type of bond is formed when atoms share electrons?

Correct Answer: A) Covalent.

4. =The National Chemical Laboratory is situated in

Correct Answer: A) Pune.

5. The ratio of how much product is produced compared to how much is expected, expressed as a percentage.

Correct Answer: C) Percent Yield.

6. What charge do protons have?

Correct Answer: A) Positive.

7. Which subatomic particle is neutral?

Correct Answer: A) Neutron.

8. Balance the following equationDicarbon dihydride + Oxygen $\rightarrow$ Carbon dioxide + Water

Correct Answer: B) 2C2H2 + 5O2 $\rightarrow$ 4CO2 + 2H2O.

9. The human body is made up of several chemical elements; the element present in the highest proportion (65 %) in the body is

Correct Answer: A) Oxygen.

10. Which of the following represents a chemical change?

Correct Answer: D) Rusting iron.

11. A positively or negatively charged particle.

Correct Answer: C) Ion.

12. Soluble inorganic compounds whose ions conduct a current is solution are called

Correct Answer: D) Electrolytes.

13. Under similar conditions of temperature and pressure equal volume of all gases contain equal number of molecules. This is

Correct Answer: D) Avogadros law.

14. X 1023 atoms of lithium (Li) is equal to how many moles?

Correct Answer: D) 0.849 moles.