NTPC CBT-2 Biology Quiz - 25

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Question 1:

Ozone layer, which absorbs the ultra-voilet radiation, is found in which one of the following layers of the atmosphere?

Question 2:

What is the pH value of blood?

Question 3:

In comparison to female male has high colour blindness because

Question 4:

People living in high altitudes (like mountains) usually have a

Question 5:

“Lubb” sound is produced to?