Choose the correct alternative from the following.
Assertion (A) : India is a democratic country.
Reason (R) : India has a Constitution of its own.
Answer: B
India is a democratic country because its government is the government of the people, for the people and by the people.
It is also true that India has its own Constitution.
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Assertiona (A) : Food materials should not be soaked in water for a long time.
Reason (R) : Washing leads to loss of Vitamin A and Vitamin D from the foodstuff.
Answer: C
Food materials should not be soaked in water for long since washing leads to loss of water soluble Vitamin B and Vitamin C
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Assertion (A) : The use of Chlorofluorocarbon carbons is banned throughout the world nowadays.
Reason (R) : These chemicals cause skin cancer.
Answer: C
The use of Chlorofluorocarbons is banned nowadays because these cause holes in ozone layer through which ultraviolet rays penetrate and may cause skin cancer.
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Assertion (A) : Copper is used to make electric wires.
Reason (R) : Copper has very low electrical resistance.
Answer: A
A low electrical resistance of copper makes it a good electric conductor. So, it is used to make electric wires.
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Assertion (A) : Uranium undergoes nuclear fusion reaction.
Reason (R) : It has a big, unstable nucleus.
Answer: D
Having a big, unstable nucleus, uranium undergoes nuclear fission reaction.
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Assertion:
Today's youth in India like western music more than Indian classical music.
RI. Western music has strong base than Indian classical music.
RII. Indian classical music is very boring and they like rocking music more.
Answer: D
Hence the given assertion is about the preference of today's youth.
RI is talking about the strong base of western music. Having strong base does not imply that it is good to listen.
RII tells that youth like rocking music but there is no evidence that western music is rocking.\Neither RI nor RII is a reason.
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Assertion:
Students are showing great interest in taking their degrees from U.K. Universities with regard to management studies.
RI. U.K. Universities have proved to be the best in grooming students for a career in management.
RII. Other countries cannot provide the facilities for management courses as U.K. Universities provide.
Answer: D
A student may prefer a university considering the structure of academics of the facilities offered. Hence, both RI and RII are valid reasons.
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Assertion (A) : Earthworms are not good for agriculture.
Reason (R) : Earthworms break down the soil into fine particles and make it soft.
Answer: D
Earthworms help in agriculture because they make the soil soft and porous.
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Assertion (A) : Eskimos reside in igloos.
Reason (R) : No other material except snow is available.
Answer: C
Eskimos live in snow houses called igloos because snow, being a bad conductor of heat, these houses are warm inside.
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Assertion (A) : We feel comfortable in hot and humid climate.
Reason (R) : Sweat evaporates faster in humid climate.
Answer: D
We feel uncomfortable in hot and humid climate because in hot weather, body sweats more but dut to high humidity, this sweat does not evaporate easily.
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