Choose the correct alternative from the following.
Assertion (A) : Amoebiasis is an occupational disease.
Reason (R) : Amoebiasis is caused by inhalation of asbestos dust.
Answer: C
Amoebiasis is a microbial disease, caused by protozoa.
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Assertion (A) : Land breeze blows during night.
Reason (R) : Land gets heated up quickly.
Answer: B
Land gets heated up quickly and also cools quicker than sea at night so taht cool winds called the land breeze blow from land to sea.
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Assertion (A) : Plaster of Paris is used by doctors for setting fractured bones.
Reason (R) : When Plaster of Paris is mixed with water and applied around the fractured limbs, it sets into a hard mass.
Answer: A
Plaster of Paris when mixed with water applied around the fractured limbs, it sets into 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) : 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:
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 (A) : Simla is colder than Delhi.
Reason (R) : Simla is at a high altitude compared to Delhi.
Answer: A
Simla is colder than Delhi because it is situated at a higher altitude and temperature decreases by 1oC for every 165 meters of ascent.
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Assertion:
India continues to make strides in defence research.
RI. India wants to stand next to America in defence research.
RII. To ensure a high level of defence preparedness against hostile neighbours.
Answer: B
"Standing next to America" cannot be taken as a valid reason for Indian defence endeavours. Any action of a government evolves out of necessity or urge for development. Hence, RII is not a valid reason.
RII is a valid reason, as India has "hostile" neighbours. "Hostile" implies the presence of inimical and dangerous neighbours, which would necessitate high level of defence preparedness. Hence, RII is a strong and valid reason.
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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:
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:
The problem solving ability, mental performance and memory of the employees of company C are deteriorating.
RI. Due to tight schedule at company C, the employees of the company are skipping their breakfast regularly.
RII. The job is physical in nature, but not mental.
Answer: D
Here in the assertion, we are only talking about the weakness of the employees. RI is giving the reason for skipping breakfast, so it is not the reason. RII is also not a valid reason, as lack of mental exercise may not lead to deterioration.
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