General Science-40

1. What will happen if the star having mass greater than five times of the Sun is dead?
a. White dwarf will form
b. Neutron star will form
c. Black hole will form
d. Nebula will form

2. The greatest seasonal contrast of isolation on the earth is in which of the following latitudinal zones?
a. Equatorial
b. Tropical
c. Temperature
d. Polar

3. Which of the following radioactive elements is found in large amounts in India?
a. Radium
b. Thorium
c. Plutonium
d. Uranium

4. The bond which is present between water molecules is:
a. Electrovalent bond
b. Covalent bond
c. Hydrogen bond
d. Vander Waals bond

5. In general what is range of frequency of the "Message Signal"?
a. Radio Frequency
b. Audio Frequency
c. Both ‘a’ and ‘b’
d. Neither ‘a’ and ‘b’

6. The number of Chromosomes pairs in Human body are:
a. 23
b. 42
c. 46
d. None of above

7. Water is a good solvent. This is due to:
a. Dielectric constant of water
b. Surface tension of water
c. Specific heat of water
d. Heat of fusion of water

8. The formation of three dimension image by interference of two light beams from the laser or other coherent source of light is called
a. Optical photography
b. Holography
c. X-ray photography
d. Radiography

9. A jet engine works on the principle pf conversion of:
a. Energy
b. Mass
c. Linear momentum
d. Angular momentum

10. Which of the following is the best conductor of electricity:
a. Water
b. Mercury
c. Wood
d. Leather