Sunday 11 August 2013

General Science-7

1. What kind of energy is stored in a dry cell ?
a. Mechanical
b. Electrical Chemical
c. Heat

2. Excessive consumption of alcoholic drinks causes damage to the
a. Liver 
b. Kidneys
c. Heart
d. Lungs

3. Steel is more elastic than rubber because
a. its density is high
b. It is a metal
c. Ratio of stress to strain is more 
d. Ratio of stress to strain is less

4. A car and a loaded truck are moving with the same speed along a road. As compared to the truck, the car shall possess
a. More kinetic energy
b. More potential energy
c. Less kinetic energy 
d. More mechanical energy

5. Solar eclipse takes place when
a. The moon comes between the sun and the earth 
b. The earth comes between the sun and the moon
c. The sun comes between the moon and the earth
d. None of the above

6. What makes the blood look red?
a. Red corpuscles
b. Hemoglobin 
c. Plasma
d. Certain secretions

7. In railway tracks, a small gap is left between the rails
a. To allow for the expansion during heat
b. To save the cost of metal
c. To permit the shrinkage of metal
d. None of the above

8. Food can be cooked quicker in a pressure cooker because
a. No heat is lost
b. High pressure steam has high temperature 
c. Stream remains within the cooker
d. it is made of metal

9. Universal receivers can receive blood from
a. Group AB
b. Group O only
c. Groups O, A, B, AB
d. Groups A, AB

10. During the floods, precaution should be specially taken against
a. Cholera
b. Small pox
c. Typhoid 
d. Malaria

11. An echo is produced on account of the ___ of sound wave.
a. Diffraction
b. Refraction
c. Reflection
d. Dispersion

12. Sound cannot travel through
a. Air
b. Sand
c. Vacuum 
d. Water

13. After cobra bite, venom affects the
a. Brain 
b. Blood circulation
c. Lungs
d. None of these

14. Friction can be reduced by changing over from
a. Sliding to rolling
b. Rolling to sliding
c. Potential energy to kinetic energy
d. Dynamic to static

15. Science is derived from Latin word “scientia” which means:
a. Reasoning
b. Logic
c. Knowledge
d. Life