SSPKJ 8

1304-X

Sciene-I

(Physics and Chemistry)

(Term-Ist)

Time : 2 Hours                                                              [Maximum Marks:30

Section –A

(Physics)

(Long Answer Type Questions)

(Answer the given below question in about 80-100 words)

1. Define balanced and unbalanced force with the help of a suitable activity.           5

Or

State and explain Newton’s Second Law of Motion.

(Short Answer Type Questions)

(Answer the given below question in about 60-80 words)

2. What is energy ? Write different forms of energy.                                     3

3. Define the relation, s = ut + ½at².                                                                        3

(Very Short Answer Type Questions)

(Answer the given below question briefly in one or two words or sentences each.)

4. What is the value of acceleration for uniform motion ?                              1

5. Define uniform velocity.                                                                           1

(Multiple Choice Questions)

(In each of the following multiple questions choose the correct/most appropriate from th four alternatives and write it in your answer book.)

6. (a) The slope of velocity-time graph shows :                                                        1

      (i) Speed

      (ii) acceleration

      (iii) displacement

      (iv) force

(b) An object on height possesses :

      (i) Potential energy

      (ii) Kinetic energy

      (iii) Potential energy as well as Kinetic energy both

      (iv) None of these

Section – B

(Chemistry)

(Long Answer Type Questions)

(Answer the given below question in about 80-100 words)

7. Differentiate between colloidal solution, true solution and suspensions.      5

Or

Distinguish between mixture and compounds.

(Short Answer Type Questions)

(Answer the given below question in about 60-80 words)

8. Define evaporation, boiling point and melting point.                                        3

9. Differentiate between solids and liquids.                                                                     3

(Very Short Answer Type Questions)

(Answer the given below question briefly in

one or two words or sentences each)

10. Define saturate solution.                                                                                          1

11. Write one example of slid in liquid solution.                                                  1

(Multiple Choice Questions)

(In each of the following multiple questions choose

the correct/ most appropriate answer from the

four alternatives and write it in your answer book.)

12. (a) Muddy water is an example of :                                                 1

            (i) True solution

            (ii) Suspension

            (iii) Colloidal solution

            (iv) Emulsion

(b) The size of the particles in suspension is :                                                1

(i) Bigger than 10^-5 cm

(ii) Smaller than 10^-8 cm

(iii) Between 10^-8 and 10^-5 cm

(iv) None of these