General Science

Q.1. Which is the absolute temperature scale?
A. Celsius
B. Fahrenheit
C. Kelvin
D. All of these
Ans. Kelvin



Q.2. What are metal bearing rocks called?
A. Bitumen
B. Bauxite
C. Metalloids
D. Ore
Ans. Metalloids



Q.3. Optic fibers are mainly used for which of the following?
A. Musical instruments
B. Food industry
C. Weaving
D. Communication
Ans. Communication



Q.4. Which type of fire extinguisher is used for petroleum fire?
A. Powder type
B. Liquid type
C. Soda acid type
D. Foam type
Ans. Powder type



Q.5. Which of the following rays are the most penetrating?
A. Beta rays
B. Alpha rays
C. Gamma rays
D. X-rays
Ans. Gamma rays



Q.6. The age of most ancient geological formations is estimated by
A. Ra - Si method
B. Potassium - argon method
C. C-14 method
D. Uranium-lead method
Ans. C-14 method




Q.7. The property of a substance to absorb moisture from the air on exposure is called
A. Osmosis
B. Deliquescence
C. Efflorescence
D. Desiccation
Ans. Deliquescence



Q.8. The average salinity of sea water is
A. 3%
B. 3.5%
C. 2.5%
D. 2%
Ans. 3.5%



Q.9. From which mineral is radium obtained?
A. Rutile
B. Haematite
C. Limestone
D. Pitchblende
Ans. Pitchblende



Q.10. Which metal pollute the air of a big city?
A. Copper
B. Chromium
C. Lead
D. Cadmium
Ans. Lead

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