9th Class Chemistry 2nd Quarter Book Paper

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

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

   1. IA

   2. IIA

   3. VII A

   4. VIII A

2. Which of the following contains oxallic acid:

   1. Tomato

   2. Orange

   3. Tamarind

   4. Sour milk

3. In which form the energy is stored in a molecule?

   1. Chemical energy

   2. Heat energy

   3. Elastic potential

   4. Mechanical energy

4. The direction of irreversible reaction is:

   1. Reverse

   2. Forward

   3. Both

   4. None of these

5. Lanthanides belong to period:

   1. 4th

   2. 5th

   3. 6th

   4. 7th

6. Reaction between acids and bases is called:

   1. Decomposition reaction

   2. Neutralization reaction

   3. Addition reaction

   4. None of these

7. A catalyst does what to the activation energy of reactions?

   1. Increases it

   2. Decrease it

   3. Has no effect

   4. None of these

8. A reverse reaction is one that:

   1. Proceeds from left to right

   2. In which reactants react to form products

   3. Slows down gradually

   4. Speeds up gradually

9. The vertical columns present in the periodic table are called................:

   1. Group

   2. Period

   3. Both

   4. None

10. Common name of sodium hydroxide is:

    1. Caustic soda

    2. Washing soda

    3. Soda water

    4. None of these

11. Formation of which hydrogen halide from the elements is an endothermic reaction?

    1. HCI

    2. HF

    3. HBr

    4. HI

12. The formation of ammonia is: 

    1. Exothermic 

    2. Endothermic 

    3. Both

    4. None of these