Exm Set question of science

Mitra High School

Kalimati-Kuleshowr

2073 Second-Terminal Examination

Subject: English

Class 9	F.M. 50
Time: 3hours	P.M. 24

Attem all questions

GROUP 'A': PHYSICS [38]

1.      (a)  Write difference between vector and scalar? A car started from rest             with velocity 10 km/hr find the time and acceleration to covered                           50km distance?                               (1+2=3)

      (b)  Prove that second equation of motion         2

2.      (a)  Discourse Newton's second law of motion? Define 1N force. (2+1=3)

      (b)  A bus of mass 1500 kg is moving with a velocity 90 km/hr. It is suddenly stopped by the application of a retarding force 750N. Calculate the time taken and distance travelled by bus when it is stopped.      2

3.      (a)  What do you mean by e.m.f of cell? Define voltmeter.      (2+1=3)             

(b)  Prove that Ohm's Law also defines One Ohm resistance. (2+1=3)

4.      (a)  Define one joule work? Write any two differences between Kinetic            energy and potential energy.                                        (1+2=3)

(b)  A car of 800 kg mass travelling with a velocity of 40m/s stops at a              distance 60m. Calculate the work done on applying brakes.           2

5.      (a)  Define resistivity and conductivity.                                                (1+1=2)

(b)  A cell of e.m.f 6V is connected across a resistor of 15 resistance.               What is the current?                                                               2

6.      (a)  State laws of refraction? Define total internal reflection.    (2+1=3)

(b)  Write any 2 difference between convex and concave lens,                         

       Draw the diagram of convex lens when object is placed on F. (2+1=3)

7.      (a)  What are the difference between angle of dip and angle of declination? Define refractive indices of substance. (2+1=3)

(b) Derive the formula of kinetic energy. Write the SI unit of work, magnetic field and power. (2.5+1.5=4)

GROUP 'B': CHEMISTRY 20

8.      (a) Write the difference between physical change and chemical change.2  (b)  Write electronic configuration of argon and in which group of       periodic table does belong? (1+1=2)

9.      (a)  Give reason  (1.5X2=3)

   (i) He is inert gas

            (ii) Valency of oxygen is 2

(b) 10gm of water is dessplves 15.5 gm of sodium chloride at 25^oC. Calculate solubility. Define sublimation.   (2+1=3)

10.  (a)  What do you mean by catalyst? Which gas is produced when

sulphuric acid is reacts with Znic metal, explain laboratory preparation of it. (1+2=3)

(b)  Define Atomic weight? Explain metal and non-metal with examples.2

11.  (a) What do you mean by Organic compound and Inorganic compound give examples. (1+1+1=3)

(b) What do you mean by allotropes of carbon? Define Graphite.  2

GROUP 'B': GEOLOGY AND ASTRONOMY 12

12.   (a)  What is a naturel hazard? Give two examples of it. Define Volcano.4

(b)   Define greenhouse effect. Write any two importance of artificial greenhouse. What are the causes of greenhouse? (1+1+1.5=3.5)

13.  (a) What do you mean by solar system? Define astronomy. (1+1.5=2.5)

(b)  Define earth rotation and revolution. 2