Indian National Chemistry Olympiad (INChO)

Description: The Indian National Chemistry Olympiad (INChO) is a national level chemistry competition for high school students in India. It is organized by the Indian Association of Chemistry Teachers (IACT) and is held annually. The top performers in the INChO are selected to represent India at the International Chemistry Olympiad (IChO).
Number of Questions: 15
Created by:
Tags: chemistry olympiad india
Attempted 0/15 Correct 0 Score 0

Which of the following is not a noble gas?

  1. Helium

  2. Neon

  3. Argon

  4. Krypton

  5. Xenon


Correct Option: E
Explanation:

Xenon is not a noble gas because it can form compounds with other elements.

What is the chemical formula for water?

  1. H2O

  2. CO2

  3. CH4

  4. NH3

  5. O2


Correct Option: A
Explanation:

The chemical formula for water is H2O.

Which of the following is a metal?

  1. Sodium

  2. Chlorine

  3. Carbon

  4. Oxygen

  5. Nitrogen


Correct Option: A
Explanation:

Sodium is a metal.

What is the chemical formula for carbon dioxide?

  1. CO2

  2. CH4

  3. NH3

  4. O2

  5. H2O


Correct Option: A
Explanation:

The chemical formula for carbon dioxide is CO2.

Which of the following is a non-metal?

  1. Sodium

  2. Chlorine

  3. Carbon

  4. Oxygen

  5. Nitrogen


Correct Option: B
Explanation:

Chlorine is a non-metal.

What is the chemical formula for methane?

  1. CO2

  2. CH4

  3. NH3

  4. O2

  5. H2O


Correct Option: B
Explanation:

The chemical formula for methane is CH4.

Which of the following is a metalloid?

  1. Sodium

  2. Chlorine

  3. Carbon

  4. Oxygen

  5. Boron


Correct Option: E
Explanation:

Boron is a metalloid.

What is the chemical formula for ammonia?

  1. CO2

  2. CH4

  3. NH3

  4. O2

  5. H2O


Correct Option: C
Explanation:

The chemical formula for ammonia is NH3.

Which of the following is a halogen?

  1. Sodium

  2. Chlorine

  3. Carbon

  4. Oxygen

  5. Nitrogen


Correct Option: B
Explanation:

Chlorine is a halogen.

What is the chemical formula for oxygen?

  1. CO2

  2. CH4

  3. NH3

  4. O2

  5. H2O


Correct Option: D
Explanation:

The chemical formula for oxygen is O2.

Which of the following is a noble gas?

  1. Helium

  2. Neon

  3. Argon

  4. Krypton

  5. Xenon


Correct Option: A
Explanation:

Helium is a noble gas.

What is the chemical formula for nitrogen?

  1. CO2

  2. CH4

  3. NH3

  4. O2

  5. N2


Correct Option: E
Explanation:

The chemical formula for nitrogen is N2.

Which of the following is a metal?

  1. Sodium

  2. Chlorine

  3. Carbon

  4. Oxygen

  5. Nitrogen


Correct Option: A
Explanation:

Sodium is a metal.

What is the chemical formula for carbon monoxide?

  1. CO2

  2. CH4

  3. CO

  4. O2

  5. H2O


Correct Option: C
Explanation:

The chemical formula for carbon monoxide is CO.

Which of the following is a non-metal?

  1. Sodium

  2. Chlorine

  3. Carbon

  4. Oxygen

  5. Nitrogen


Correct Option: B
Explanation:

Chlorine is a non-metal.

- Hide questions