1
NDA General Ability 18 April 2021
MCQ (Single Correct Answer)
+4
-1.33
Change Language

Which of the following pairs of physical phenomenon and the discover is/are correctly matched?

 1. James Chadwick  Photoelectric
 2. Albert Einstein  Neutron
 3. Marie Curie  Radium
Select the correct answer using the code given below:
A
1, 2 and 3
B
1 and 2 only
C
2 and 3 only
D
3 only
2
NDA General Ability 18 April 2021
MCQ (Single Correct Answer)
+4
-1.33
Change Language
LED (a semi-conductor device) is an abbreviation that stands for
A
Licence for Energy Dectector.
B
Light Energy Device.
C
Light Emitting Diode.
D
Lost Energy Detector.
3
NDA General Ability 18 April 2021
MCQ (Single Correct Answer)
+4
-1.33
Change Language
The statement "friction force is a contact force while magnetic force is a non-contact force" is
A
always true.
B
true only at 0°C.
C
a false statement.
D
either true or false depending upon the temperature of the surroundings.
4
NDA General Ability 18 April 2021
MCQ (Single Correct Answer)
+4
-1.33
Change Language
Which one of the following is the chemical formula of Hypobromous acid?
A
HBrO4
B
HOBr
C
HBr
D
HBrO3
EXAM MAP