1
NDA 2017 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
Which one of the following elements forms highest number of compounds?
A
Oxygen
B
Hydrogen
C
Chlorine
D
Carbon
2
NDA 2017 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
Which one of the following elements corrodes rapidly?
A
Aluminium
B
Iron
C
Zinc
D
Silver
3
NDA 2017 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
20 g of common salt is dissolved in 180g of water. What is the mass percentage of the salt in the solution?
A
5%
B
9%
C
10%
D
15%
4
NDA 2017 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
The valency of an element depends upon the
A
total number of protons in an atom
B
mass number of an atom
C
total number of neutrons in an atom
D
total number of electrons in the outermost shell of an atom
Questions Asked from Marks 2.5