1
NDA 2019 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
Which one of the following is an example of a clean fuel?
A
Coke
B
Propane
C
Petrol
D
Wax
2
NDA 2019 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
Which one of the following metals does not react with cold water?
A
Calcium (Ca)
B
Potassium (K)
C
Magnesium (Mg)
D
Sodium (Na)
3
NDA 2019 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
In which of the following pairs are the isoelectronic ions?
A
Mg2+, Ar
B
Na+, O2$$-$$
C
Al3+, Cl$$-$$
D
K+, Ne
4
NDA 2019 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
Which one of the following is used as a binder in paints?
A
Titanium dioxide
B
Novolac
C
Phthalocyanine
D
Silicones
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