1
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.
2
NDA General Ability 18 April 2021
MCQ (Single Correct Answer)
+4
-1.33
Change Language
The process whereby certain minerals absorb water, expand and change is called as
A
Hydration
B
Oxidation
C
Hydrolysis
D
Carbonation
3
NDA General Ability 18 April 2021
MCQ (Single Correct Answer)
+4
-1.33
Change Language
Point of Origin of Earthquake Wave is known as
A
Epicenter
B
Focus
C
Photosphere
D
Seismic Zone
4
NDA General Ability 18 April 2021
MCQ (Single Correct Answer)
+4
-1.33
Change Language
Which one of the following statements about the cleansing action of soap is not true?
A
The oil and dirt gets collected in the centre of the micelle
B
Soap micelles scatter light
C
Soaps are ammonium salts of long chain carboxylic acids
D
Soap forms insoluble precipitates with the calcium and magnesium ions in hard water