1
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?
2
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)?
3
NDA General Ability 21 April 2024
MCQ (Single Correct Answer)
+4
-1.33
Which among the following are essential constituents of Portland cement?
4
NDA General Ability 21 April 2024
MCQ (Single Correct Answer)
+4
-1.33
Litmus, a well-known acid-base indicator, is derived from :
Questions Asked from Chemistry (Marks 4)
Number in Brackets after Paper Indicates No. of Questions
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