General Science-57

1. A cyclotron can accelerate
a. Ions
b. Atoms
c. Neutrons
d. gamma rays

2. The image form by an object of a compound microscope is
a. virtual and enlarged
b. virtual and diminish
c. real and diminish
d. real and enlarged

3. Hair of a shaving brush cling together when the brush is removed from water due to
a. Viscosity
b. Elasticity
c. Friction
d. surface tension

4. Which of the following is a ferromagnetic material?
a. Nickel 
b. Quartz
c. Bismuth
d. Aluminum

5. A galvanometer is converted into ammeter when we connect
a. high resistant is series
b. high resistant in parallel
c. low resistant in series
d. low resistant in parallel

6. Which one of the following common devices works on the basis of the principle of mutual induction?
a. Tube light
b. Transformer
c. LED
d. Photodiode

7. A table cloth can be pulled from a table without dislodging the dishes. It is because of
a. Graham's law of diffusion
b. Archimedes’s principle
c. Newton's first law
d. Newton's second law

8. Which one among the following radiations carries maximum energy?
a. Infrared
b. Microwave
c. UV-rays
d. Radio waves

9. When a ball drops onto the floor it bounces. Why does it bounce?
a. The floor is perfectly fluid
b. The floor heats up on impact
c. Newton's third law Implies that for every action, there is reaction
d. The floor exerts a force on the ball during impact

10. Which one of the following is the weakest force?
a. Gravitational force
b. Electromagnetic force
c. Nuclear force
d. Electrostatic force