1
NDA General Ability 16 April 2023
MCQ (Single Correct Answer)
+4
-1.33
Change Language
Which one of the following is the correct arrangement of metals in the decreasing order of their reactivity?
A
Iron, Sodium, Silver, Copper
B
Silver, Copper, Iron, Sodium
C
Sodium, Copper, Silver, Iron
D
Sodium, Iron, Copper, Silver
2
NDA General Ability 16 April 2023
MCQ (Single Correct Answer)
+4
-1.33
Change Language
Which among the following statements is not correct with respect to allotropes of Carbon?
A
Graphite is a good conductor of electricity.
B
Diamond is the hardest substance known.
C
Fullerene is one of the allotropes of carbon.
D
Next to diamond, graphite is the second hardest known substance.
3
NDA General Ability 16 April 2023
MCQ (Single Correct Answer)
+4
-1.33
Change Language
Which among the following is the popular method for manufacture of ammonia?
A
Ostwald's process
B
Haber-Bosch process
C
Electric furnace process
D
Electrolysis process
4
NDA General Ability 16 April 2023
MCQ (Single Correct Answer)
+4
-1.33
Change Language
For manufacturing of glass, which among the following is used as a source of silica?
A
Fine clay soil
B
Wood powder
C
Coconut shell
D
Sand
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