9th Class Chemistry Second half Book Paper

Q1. Multiple choice questions (Attempt all · 12 × 1 = 12)

1. Which element has high electronegativity value?

   1. Flourine

   2. Oxygen

   3. Chlorine

   4. Nitrogen

2. The ability of carbon atoms to form chains is called:

   1. Isomerism

   2. Catenation

   3. Resonance

   4. Condensation

3. Fossils fuel is responsible for our ...... problem:

   1. Pollution

   2. Particles

   3. Matter

   4. None of these

4. What does reactive mean in context of chemical hazards?

   1. Likely to cause cancer

   2. Capable of dissolving other substance

   3. Emitting harmful radiation

   4. None of these

5. Which of the following pair of quantities may be measured in the same unit?

   1. Heat and temperature

   2. Temperature and area

   3. Heat and work 

   4. Length and work

6. Which of the following groups contain alkaline earth metals?

   1. IA

   2. IIA

   3. VII A

   4. VIII A

7. Which statement is incorrect about non-metals?

   1. They are dull and cannot polish

   2. They are brittle

   3. They are poor conductors

   4. None of these

8. Simplest family of organic compounds is:

   1. Carbohydrates

   2. Proteins

   3. Oils

   4. Hydrocarbons

9. A group of gases that maintains temperature of atmosphere is:

   1. Carbon dioxide and water vapours

   2. Nitrogen and carbon dioxide

   3. Oxygen and water vapours

   4. Nitrogen and oxygen

10. Chemicals should be stored:

    1. In any container

    2. With properly labelled

    3. In direct sunlight

    4. None of these

11. The property of a measuring instrument to give the output very close to the actual value is termed as:

    1. Sensitivity

    2. Accuracy

    3. Precision

    4. Repeatability

12. Lanthanides belong to period:

    1. 4th

    2. 5th

    3. 6th

    4. 7th