General Science-59

1. Who had showed that the electric and magnetic waves are equal in vacuum?
a. Isaac Newton
b. James Clerk Maxwell
c. Albert Einstein
d. Werner Heisenberg

2. The cat survive fall from a height much more than human or any other animal. It is because the cat
a. has elastic bones
b. has thick and elastic skin
c. can immediately adjust itself to land on all four paws and absorbs the impact of fall by bending
d. None of the above

3. The blackboard seems black because it
a. reflects every colour
b. does not reflect any colour
c. absorbs black colour
d. reflects black colour

4. If the radius of the Earth is made 1/4th, the duration of an year will become
a. 8 times
b. 4 times
c. 1/8 times
d. 1/4 times

5. Mirage is a phenomenon due to
a. reflection of light
b. refraction of light
c. total internal reflection of light
d. total diffraction of light

6. Which one among the following rays has minimum wavelength?
a. Cosmic rays
b. Gamma rays
c. X- rays
d. Ultra-violet rays

7. The common soap used in washing is worked by
a. reducing the surface tension of water
b. increasing the surface tension of water
c. reducing the viscosity of water
d. increasing the viscosity of water

8. Who gave the first evidence of Big-bang theory?
a. Edwin Hubble
b. Stephen Hawking
c. S Chandrashekhar
d. Albert Einstein

9. Which one of the following matter form the core of transformer?
a. Steel
b. Soft Iron
c. Tin
d. Aluminium

10. Which one of the following instruments is used by the submarine sailors to see the objects on the surface?
a. Telescope
b. Microscope
c. Gyroscope
d. Periscope