1
NDA General Ability 21 April 2024
MCQ (Single Correct Answer)
+4
-1.33
Change Language

Which among the following are essential constituents of Portland cement?

A

Sand, lime, clay

B

Silica, alumina, lime

C

Silica, lime, graphite powder

D

Sand, graphene, clay

2
NDA General Ability 21 April 2024
MCQ (Single Correct Answer)
+4
-1.33
Change Language

Litmus, a well-known acid-base indicator, is derived from :

A

Fungi

B

Lichens

C

Bacteria

D

Termite

3
NDA General Ability 21 April 2024
MCQ (Single Correct Answer)
+4
-1.33
Change Language

What is the oxidation state of Vanadium in $V_2O_5$?

A

+2

B

+4

C

+3

D

+5

4
NDA General Ability 21 April 2024
MCQ (Single Correct Answer)
+4
-1.33
Change Language

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

List-I
(Allotrope of Carbon)
List-II
(Property)
A. Graphite 1. Thinnest and strongest material
B. Diamond 2. Hardest natural substance
C. Fullerene 3. Very light and strong material
D. Graphene 4. Soft and slippery material
A
A B C D
4 2 3 1
B
A B C D
4 3 2 1
C
A B C D
1 3 2 4
D
A B C D
1 2 3 4
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