1
NDA General Ability 10 April 2022
MCQ (Single Correct Answer)
+4
-1.33
Change Language
The mass number of argon is 40. Which one of the following statements is correct?
A
The number of protons in argon is 22.
B
The number of neutrons in argon is 18.
C
The number of electrons in argon is 18.
D
The sum of numbers of protons and electrons in argon is 40.
2
NDA General Ability 10 April 2022
MCQ (Single Correct Answer)
+4
-1.33
Change Language
Which one of the following is the correct order of the valencies of elements Ne, Si, N and Mg?
A
Ne < Mg < N < Si
B
Si < N < Mg < Ne
C
Ne < N < Si < Mg
D
Mg < Ne < N < Si
3
NDA General Ability 10 April 2022
MCQ (Single Correct Answer)
+4
-1.33
Change Language
The frequency of an alternating current is 3 Hz. It implies that
A
there are 6 cycles/s
B
there are 3 cycles/s
C
there are 2 cycles/s
D
there is only 1 cycle/s
4
NDA General Ability 10 April 2022
MCQ (Single Correct Answer)
+4
-1.33
Change Language
Which one of the following correctly represents the SI unit of resistivity?
A
Ω 
B
Ω / m
C
Ω cm
D
Ω m
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