Assertion and Reasoning Questions and answers

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1). Directions : In the questions given below are two statemetns labelled as assertion (A) and Reason (R ). In the context of the two statements, which of the following is correct?
Assertion (A) : During a total lunar eclipse only a slight darkening of the moon's surface occurs.
Reason ( R ) : The earth's atmosphere refracts the sunlight
A). Both A and R are true and R is the correct explanation of A
B). Both A and R are true but R is not the correct explanation of A
C). A is true but R is false
D). A is false but R is true
2). Assertion (A) : 41 percent of the moon' surface is never seen from the earth.
Reason ( R ) : The moon rotates and revolves in the same direction as does the earth.
A). Both A and R are true and R is the correct explanation of A
B). Both A and R are true but R is not the correct explanation of A
C). A is true but R is false
D). A is false but R is true
3). Assertion (A) : A larger number of lunar eclipses than solar eclipses are visible from a given locality on earth.
Reason ( R ) : all lunar eclipses can be seen throughout a hemisphere, but such is not the case with all solar eclipses.
A). Both A and R are true and R is the correct explanation of A
B). Both A and R are true but R is not the correct explanation of A
C). A is true but R is false
D). A is false but R is true
4). Assertion (A) : Although the sun is 400 times larger than the moon; they have almost the same angularsize relative to earth.
Reason ( R ) : The moon is 400 times nearer the earth.
A). Both A and R are true and R is the correct explanation of A
B). Both A and R are true but R is not the correct explanation of A
C). A is true but R is false
D). A is false but R is true
5). Assertion (A) : All members of the Solar system have largely spherical shape.
Reason (R ) : They tend to acquire minimum surface area and minimum surface tension during their evolution period.
A). Both A and R are true and R is the correct explanation of A
B). Both A and R are true but R is not the correct explanation of A
C). A is true but R is false
D). A is false but R is true


6). Assertion (A) : The atmosphere is heated more by terrestrial radiation than by the incoming solar radiation.
Reason (R ) : Water vapour and carbon dioxide in the atmosphere are good absorbers of short wave radiation.
A). Both A and R are true and R is the correct explanation of A
B). Both A and R are true but R is not the correct explanation of A
C). A is true but R is false
D). A is false but R is true
7). Assertion (A) : In the Halley comet, the tall is always directed away from the sun.
Reason (r ) : The radiation exerts pressure on the comet.
A). Both A and R are true and R is the correct explanation of A
B). Both A and R are true but R is not the correct explanation of A
C). A is true but R is false
D). A is false but R is true
8). Assertion (A) : Nearly one-half of the population of the world is found near the sea coasts up to a height of 100 metres above sea level.
Reason (R ) : In this area the land is levelled. Hence occupations are easily available.
A). Both A and R are true and R is the correct explanation of A
B). Both A and R are true but R is not the correct explanation of A
C). A is true but R is false
D). A is false but R is true
9). Assertion (A) : Equatorial Belt is a zone of calm.
Reason (R ) : There is almost no horizontal movement of air in the Equatorial Belt.
A). Both A and R are true and R is the correct explanation of A
B). Both A and R are true but R is not the correct explanation of A
C). A is true but R is false
D). A is false but R is true
10). Assertion (A) : The thickness of atmosphere is maximum over the Equator.
Reason (R ) : High insulation and strong convection currents occur over the Equator.
A). Both A and R are true and R is the correct explanation of A
B). Both A and R are true but R is not the correct explanation of A
C). A is true but R is false
D). A is false but R is true
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