1
NDA 2016 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
An tom of carbon has 6 protons. Its mass number is 12. How many neutrons are present in an atom of carbon?
A
12
B
6
C
10
D
14
2
NDA 2016 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
Which one of the following following is a reduction reaction?
A
$$2Mg(s) + {O_2}(g)\buildrel {} \over \longrightarrow 2MgO(s)$$
B
$$S(s) + {O_2}(g)\buildrel {} \over \longrightarrow S{O_2}(g)$$
C
$$2HgO(s)\buildrel {Heat} \over \longrightarrow 2Hg(l) + {O_2}(g)$$
D
$$Mg(s) + S(s)\buildrel {} \over \longrightarrow MgS(s)$$
3
NDA 2016 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
Which one of the following oxides of nitrogen is known as 'anhydride' of nitric acid?
A
N2O
B
N2O3
C
NO2
D
N2O5
4
NDA 2016 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
Which one of the following is the chemical name for baking soda?
A
Sodium bicarbonate (sodium hydrogen carbonate)
B
Sodium carbonate
C
Potassium bicarbonate (potassium hydrogen carbonate)
D
Potassium carbonate
Questions Asked from Marks 2.5