General Science-3

1. The range of normal human hearing lies between:
a. 500 Hz to 10000 Hz
b. 2000 Hz to 200000Hz
c. 5000 Hz to 6000 Hz
d. 50 Hz to 15000 Hz

2. 3-4 benzopyrene causes:
a. Leukemia
b. Cytosilicosis
c. Lung cancer
d. Tuberculosis

3. Climate of world is threatened by:
a. Increasing concentration of atmospheric oxygen
b. Decreasing amount of atmospheric oxygen
c. Increasing amount of atmospheric Carbon-dioxide
d. Decreasing amount of atmospheric nitrogen concentration

4. In coming years skin related disorders will become more common due to :
a. Excessive use of detergents
b. Water pollution
c. Air pollution
d. Depletion of ozone layer

5. Natural silk is a :
a. Polypeptide
b. Polysaccharide
c. Polyvinyl chloride
d. Polyacrylonitrite

6. Which of the following can be remelted time and again without producing any change?
a. PVC
b. Bakelike
c. Melmac
d. Urea-formaldehyde resin

7. The drugs used to get relief from pain are called:
a. Antipyretic
b. Analgesics
c. Antibiotics
d. Antiseptics

8. Most commonly used tranquillizers are derivatives of:
a. Acetic Acid
b. Salicylic Acid
c. Barbituric Acid
d. Sulphanilamide

9. SLV-3 and ASLV rockets used:
a. Hybrid propellants
b. Composite Solid propellants
c. Double base propellants
d. Billiquid propellants

10. A transformer is used for:
a. Increasing DC voltage
b. Decreasing DC voltage
c. Converting DC into AC
d.     Increasing or decreasing AC voltage