Question with Answer CDS
1. A ray of white light strikes the surface of an object. If all the colours are reflected the surface would appear:
A. Black
B. White
C. Grey
D. Opaque
Answer: B
2. Magnetic, electrostatic and gravitational forces come under the category of:
A. non contact forces
B. contact forces
C. frictional forces
D. non frictional forces
Answer: A
3. Dispersion process forms spectrum due to white light falling on a prism. The light wave with shortest wavelength:
A. refracts the most
B. does not change the path
C. refracts the least
D. is reflected by the side of the prism
Answer: A
4. The main source of energy in Sun is:
A. Nuclear fusion
B. Nuclear fission
C. Chemical reaction
D. Mechanical energy
Answer: A
5. A liquid initially contract when cooled down to 4°C but on further cooling down to 0°C, it expands. The liquid is:
A. Alcohol
B. Water
C. Molten iron
D. Mercury
Answer: B
6. Which one among the following may be considered a reason for India having ‘high dependency’ ratio?
A. High rate of population growth
B. Large section of population is in the age group of 0-14 years
C. High percentage of population in the age group of 15-59 years
D. Low pace of human resource development
Answer: C
7. Red soil colour is caused by:
A. Aluminium compounds
B. Mercury compounds
C. Iron compounds
D. Clay
Answer: C
8. Mid-latitude cyclones:
A. usually move across North-America from east to west
B. are generally found only over the Ocean
C. generally bring clear skies and little precipitation
D. are formed in regions of strong temperature contrasts
Answer: D
9. The Westerlies have their origin in the:
A. Polar highs
B. Subtropical highs
C. Equatorial lows
D. Sub polar lows
Answer: B
10. The Circle of illumination divides Earth into two hemispheres known as:
A. East and West
B. North and South
C. Day and Night
D. Summer and Winter
Answer: C
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