1
NDA General Ability 14th September 2025
MCQ (Single Correct Answer)
+4
-1.33
Change Language
Which one of the following is NOT a heterogeneous mixture ? 
1
Sulphur in carbon disulphide 
2
Mixture of sugar 8 and salt crystals 
3
Sandy water 
4
Sulphur in water 
2
NDA General Ability 14th September 2025
MCQ (Single Correct Answer)
+4
-1.33
Change Language

Match List I with List II and select the answer using the code given below the Lists 

List I

(Element)

List II

(Atomicity) 

A.

Phosphorus 

1.

2

B.

Nitrogen

2.

1

C.

Neon

3.

8

D.

Sulphur

4.

4

1
A - 4, B - 1, C - 2, D - 3
2
A - 4, B - 2, C - 1, D - 3
3
A - 3, B - 2, C - 1, D - 4
4
A - 3, B - 1, C - 2, D - 4
3
NDA General Ability 14th September 2025
MCQ (Single Correct Answer)
+4
-1.33
Change Language

In the following redox reaction, which compound is acting as a reducing agent ?

N2H4 + 2H2O2 → N2 + 4H2O

1
H2O2
2
N2H4
3
N2
4
H2O
4
NDA General Ability 14th September 2025
MCQ (Single Correct Answer)
+4
-1.33
Change Language
Which one: of the following is considered to be the purest source of water ?
1
River water 
2
Sea water 
3
Well water
4
Rain water