1
NDA 2018 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
Which one of the following is the purest form of carbon?
A
Charcoal
B
Coke
C
Fullerene
D
Carbon black
2
NDA 2018 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
The poisonous nature of carbon monoxide (CO) is due to its
A
insolubility in water
B
ability to form a complex with haemoglobin
C
ability to reduce some metal oxides
D
property of having one $$\sigma$$-bond
3
NDA 2018 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
Which one of the following alkali metals has lowest melting point?
A
Sodium
B
Potassium
C
Rubidium
D
Caesium
4
NDA 2018 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
Which one of the following metals is alloyed with sodium to transfer heat in a nuclear reactor?
A
Potassium
B
Calcium
C
Magnesium
D
Strontium
Questions Asked from Marks 2.5