10th Class | Chemistry-Chemistry MCQ for 9 | Learn & Give Online MCQS Test ,MCQs: multiple choice questions and answers,Mock Tests and Practice Papers

Chemistry-Chemistry MCQ for 9/10th Class Sample Test,Sample questions

Question:

The atomic number of an element is determined by the number of:

1.Electrons

2.Protons

3.Neutrons

4.Positrons

Question:

The elements in the same group of the periodic table have:

1.Different numbers of protons

2.Different numbers of neutrons

3.Similar chemical properties

4.The same atomic mass

Question:

The number of atoms in one molecule of oxygen (O2) is:

1.1

2.2

3.3

4.4

Question:

The pH scale measures the acidity or basicity of a substance. A pH value of 7 indicates:

1.Strong acidity

2.Neutral solution

3.Strong basicity

4.Weak acidity

Question:

The process of conversion of a solid directly into vapor without passing through the liquid state is called:

1.Sublimation

2.Evaporation

3.Condensation

4.Fusion

Question:

The smallest particle of an element that retains its chemical properties is called:

1.Compound

2.Molecule

3.Atom

4.Proton

Question:

What is the atomic number of carbon?

1.6

2.12

3.14

4.16

Question:

What is the chemical symbol for iron?

1.Ir

2.Fe

3.Io

4.In

Question:

What is the chemical symbol for iron?

1.Ir

2.Fe

3.Io

4.In

Question:

What is the chemical symbol for potassium?

1.P

2.K

3.Pt

4.Ka

Question:

What is the formula for sulfuric acid?

1.H2SO3

2.H2SO4

3.H2S

4.HSO4

Question:

What is the formula for the compound formed between calcium and chlorine?

1.CaCl

2.CaCl2

3.Ca2Cl

4.Ca2Cl2

Question:

What is the process of conversion of a gas into a liquid called?

1.Condensation

2.Evaporation

3.Sublimation

4.Solidification

Question:

Which gas is most abundant in the Earth's atmosphere?

1.Nitrogen

2.Oxygen

3.Carbon dioxide

4.Argon

Question:

Which gas is produced during photosynthesis?

1.Oxygen

2.Carbon dioxide

3.Hydrogen

4.Nitrogen

Question:

Which of the following is NOT a greenhouse gas?

1.Compound

2.Molecule

3.Atom

4.Proton

Question:

Which of the following is NOT a greenhouse gas?

1. Carbon dioxide

2.Methane

3.Nitrogen

4.Water vapor

Question:

Which of these elements is a noble gas?

1.Hydrogen

2.Helium

3.Sodium

4.Oxygen

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Chemistry-Chemistry MCQ for 9/10th Class Sample Test,Sample questions

Question:
The atomic number of an element is determined by the number of:

Question:
The elements in the same group of the periodic table have:

Question:
The number of atoms in one molecule of oxygen (O2) is:

Question:
The pH scale measures the acidity or basicity of a substance. A pH value of 7 indicates:

Question:
The process of conversion of a solid directly into vapor without passing through the liquid state is called:

Question:
The smallest particle of an element that retains its chemical properties is called:

Question:
What is the atomic number of carbon?

Question:
What is the chemical symbol for iron?

Question:
What is the chemical symbol for iron?

Question:
What is the chemical symbol for potassium?

Question:
What is the formula for sulfuric acid?

Question:
What is the formula for the compound formed between calcium and chlorine?

Question:
What is the process of conversion of a gas into a liquid called?

Question:
Which gas is most abundant in the Earth's atmosphere?

Question:
Which gas is produced during photosynthesis?

Question:
Which of the following is NOT a greenhouse gas?

Question:
Which of the following is NOT a greenhouse gas?

Question:
Which of these elements is a noble gas?

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