Choose the correct alternative from the following.
Assertion (A) : Telephone wires sag more in summer.
Reason (R) : They expand due to summer heat.
Answer: A
The metal of telephone wires expand in summer and the wires become loose. So, they sag.
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Assertion (A) : The use of chlorofluoro carbons is banned throughout the world nowadays.
Reason (R) : These chemicals cause skin cancer.
Answer: C
The use of chlorofluoro carbons is banned nowadays because these cause holes in the ozone layer through which ultraviolet rays penetrate and may cause skin cancer.
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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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Assertion (A) : Plaster of Paris is used by doctors by setting fractured bones.
Reason (R) : When plaster of Paris is mixed with water and applied around the fractured limbs, it sets in to a hard mass.
Answer: A
Plaster of Paris when mixed with water and applied around the fractured limbs, it sets in to a hard mass and keeps the bone joints in a fixed position. So, it can be used for setting fractured bones.
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Assertion (A) : Buddha left home after his marriage.
Reason (R) : He wished to be free of all worldly ties and become an ascetic.
Answer: A
Buddha left home even after his marriage because he wished to free himself of all worldly ties and becomes an ascetic.
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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 (A) : The freezing of sea water during winter does not kill the fishes.
Reason (R) : Only surface water is frozen.
Answer: A
In winter, only the surface water of the sea freezes.
Further below, water does not freeze because the surface ice provides an insulating coat.
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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:
The president dissolved the 12th Lok Sabha but asked the present government to continue as a caretaker government.
RI. New government cannot be formed immediately.
RII. The country cannot run without a government.
Answer: D
In both the situations explained by RI and RII, we need to have a caretaker government. Hence, both the valid reasons.
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Assertion:
The newly constructed bridge collapsed and caused death of many people.
RI. The design of the bridge was not proper.
RII. The bridge was constructed on black cotton soil.
Answer: A
Here the assertion is about the collapse of the newly constructed bridge, which is possible because of faulty construction or because of improper design. Hence, I can be reason.
RII talks about type of soil, which is out of context.
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