1
NDA 2017 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
How much CO2 is produced on heating of 1 kg of carbon?
A
$${{11} \over 3}$$ kg
B
$${{3} \over 11}$$ kg
C
$${{4} \over 3}$$ kg
D
$${{3} \over 4}$$ kg
2
NDA 2017 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
Zinc is used to protect iron from corrosion because zinc is
A
more electropositive than iron
B
cheaper than iron
C
a bluish white metal
D
a good conductor of heat and electricity
3
NDA 2017 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
Which one of the following gases is placed second in respect of abundance in the Earth's atmosphere?
A
Oxygen
B
Hydrogen
C
Nitrogen
D
Carbon dioxide
4
NDA 2017 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
Which one of the following is a chemical change?
A
Cutting of hair
B
Graying of hair naturally
C
Swelling of resin in water
D
Cutting of fruit
Questions Asked from Marks 2.5