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1
NDA General Ability 3 September 2023
MCQ (Single Correct Answer)
+4
-1.33
What is the action of litmus on ethanol?
A
Litmus is neutral towards ethanol
B
Ethanol turns blue litmus to red; confirming acidic nature of ethanol
C
Ethanol turns red litmus to blue; confirming basic nature of ethanol
D
Ethanol decolorizes litmus through bleaching action
2
NDA General Ability 3 September 2023
MCQ (Single Correct Answer)
+4
-1.33
Which one of the following metal is NOT an essential component in stainless steel?
A
Iron
B
Nickel
C
Chromium
D
Tin
3
NDA General Ability 3 September 2023
MCQ (Single Correct Answer)
+4
-1.33

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

LIST I

(Process)

LIST II

(Separation method)

A.

Separation of acetone and water from their mixture

1.

Chromatography

B.

Separation of water
and kerosene oil
from their mixture

2.

Centrifugation

C.

Separation of cream from milk

3.

Distillation

D.

Separation of pigments from plant extract

4.

Separating Funnel
A
A - 3, B - 2, C - 4, D - 1
B
A - 4, B - 2, C - 1, D - 3
C
A - 3, B - 4, C - 2, D - 1
D
A - 4, B - 1, C - 2, D - 3
4
NDA General Ability 3 September 2023
MCQ (Single Correct Answer)
+4
-1.33
Which one of the following metals can be extracted using carbon as reducing agent?
A
Zinc
B
Silver
C
Gold
D
Aluminum
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Questions Asked from Marks 4
NDA General Ability 13 April 2025 (13) NDA General Ability 21 April 2024 (14) NDA General Ability 3 September 2023 (19) NDA General Ability 16 April 2023 (16) NDA General Ability 4 September 2022 (13) NDA General Ability 10 April 2022 (15) NDA General Ability 18 April 2021 (15)
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Coordinate Geometry
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