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1
NDA General Ability 14th September 2025
MCQ (Single Correct Answer)
+4
-1.33
Change Language
The book ‘The Origin of Species by Means of Natural Selection’ was authored by
1
Charles Darwin
2
Carolus Linnaeus 
3
Barbara McClintock 
4
Copernicus 
2
NDA General Ability 14th September 2025
MCQ (Single Correct Answer)
+4
-1.33
Change Language
The optimum pH at which the enzymes pepsin and trypsin of the human alimentary canal works are
1
pH 2.0 and 7.9, respectively 
2
pH 4.5 and 3.5, respectively  
3
pH 9.5 and 4.5, respectively 
4
pH 7.0 and 8.0, respectively
3
NDA General Ability 14th September 2025
MCQ (Single Correct Answer)
+4
-1.33
Change Language
The amount of air breathed in and out during a normal respiration by human lungs is referred to as 
1
Vital capacity 
2
Tidal volume 
3
Inspiratory volume 
4
Total lung capacity 
4
NDA General Ability 14th September 2025
MCQ (Single Correct Answer)
+4
-1.33
Change Language
Which one among the following statements about arteries and veins in humans is NOT correct ?
1
Arteries carry blood away from heart while veins bring blood towards the heart
2
Pulmonary arteries always carry oxygenated blood while Pulmonary veins always carry deoxygenated blood 
3
Arteries have thicker and more elastic walls compared to veins in general 
4
Arteries do not have valves but veins do have valves 
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