1
NDA General Ability 13 April 2025
MCQ (Single Correct Answer)
+4
-1.33
What happens when the fat and oil containing food materials are left outside for a long time?
1
Fats and oils in the food get oxidized
2
Fats and oils in the food get reduced
3
Fats and oils in the food get ice-covered
4
No reaction takes place
2
NDA General Ability 13 April 2025
MCQ (Single Correct Answer)
+4
-1.33
Which one among the following elements is known to be discovered the earliest?
1
Copper
2
Gold
3
Oxygen
4
Uranium
3
NDA General Ability 21 April 2024
MCQ (Single Correct Answer)
+4
-1.33

The relative atomic mass of boron (which exists in two isotopic forms 10B and 11B) is 10.81. What will be the abundance of 10B and 11B, respectively (consider a sample of 100 atoms)?

A

19% and 81%

B

81% and 19%

C

38% and 62%

D

62% and 38%

4
NDA General Ability 21 April 2024
MCQ (Single Correct Answer)
+4
-1.33

Which among the following are essential constituents of Portland cement?

A

Sand, lime, clay

B

Silica, alumina, lime

C

Silica, lime, graphite powder

D

Sand, graphene, clay