We know that the person with blood group-O is the universal blood donor but group-O positive blood group contains anti-gens for Rh factor.
Indus Valley people knew the art of navigation but the reason that the seals of that time indicate prevalence of overseas trade is false.
Both assertion and reason are correct and reason is correct explanation for the assertion as if mutation for colour blindness occurs in one X-chromosome, female have one normal chromosome.
We know that, mercury is the smallest planet but it is not the farthest planet.
Earthworms are good for agriculture as they make the soil fertile. Therefore, assertion is false but the reason is true.
We prefer coloured/dark clothes in winter as they absorb heat but given reason is true for white clothes.
Most Himalayan rivers are perennial because they are fed by the melting snow throughout the year.
Iron has specific gravity less than that of mercury but more than that of water so, floats on mercury but gets immersed in water.
Noise pollution is an unwanted accumulation of noise in the atmosphere as it interferes with communication.
Assertion correct because Din-e-Illhi was founded by Akbar but the reason is false.
Both A and R are true and because of the reason the assertion is true.
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