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

Which one among the following oxides has the highest melting point?

A

Na$_{2}$O

B

MgO

C

Fe$_{2}$O$_{3}$

D

CuO

2
NDA General Ability 3 September 2023
MCQ (Single Correct Answer)
+4
-1.33
Galvanization is a method of protecting iron from rusting by coating with a thin layer of
A
Gallium
B
Aluminum
C
Zinc
D
Silver
3
NDA General Ability 3 September 2023
MCQ (Single Correct Answer)
+4
-1.33
Which one of the following alloys contains a non-metal as one of its constituent?
A
Brass
B
Bronze
C
Amalgam
D
Steel
4
NDA General Ability 3 September 2023
MCQ (Single Correct Answer)
+4
-1.33
Buckminster fullerene, which looks like a football, is an allotropic form of
A
Phosphorus
B
Sulfur
C
Carbon
D
Tin
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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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