Q.

Persons who are colour-blind cannot distinguish between –

A. yellow and white
B. green and blue
C. red and green
D. black and yellow
Answer» C. red and green
Explanation: A person with colour-blindness has trouble seeing red, green, blue, or mixtures of these colours. The most common type is red- green colours - blindness, where red and green are as the same colour.
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Biology (GK)

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