1
NDA General Ability 18 April 2021
MCQ (Single Correct Answer)
+4
-1.33
Change Language
Which of the following sets of elements has the same valency?
A
Na, Mg, Ca
B
Na, Mg, Al
C
Mg, Ca, K
D
Mg, Ca, Ba
2
NDA General Ability 18 April 2021
MCQ (Single Correct Answer)
+4
-1.33
Change Language
Which one of the following is the lowest possible temperature?
A
0° Celsius
B
-073° Celsius
C
-173° Celsius
D
-273° Celsius
3
NDA General Ability 18 April 2021
MCQ (Single Correct Answer)
+4
-1.33
Change Language
Numerically two thermometers, one in Fahrenheit scale and another in Celsius scale shall read same at
A
-40°
B
0° 
C
-273°
D
100° 
4
NDA General Ability 18 April 2021
MCQ (Single Correct Answer)
+4
-1.33
Change Language
The image we see in plane mirror is
A
real and thus can be photographed.
B
virtual and nearer than the object.
C
virtual and is laterally inverted.
D
real but cannot be photographed.
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