1
NDA 2018 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
What is the formula mass of anhydrous sodium carbonate? (Given, that the atomic masses of sodium, carbon and oxygen are 23u, 12u and 16u respectively).
A
286 u
B
106 u
C
83 u
D
53 u
2
NDA 2018 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
Which one of the following is called 'syn gas' ?
A
C(s) + H2O(g)
B
CO(g) + H2O(g)
C
CO(g) + H2(g)
D
NO2(g) + H2(g)
3
NDA 2018 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
Which one of the following reactions will give NO (nitric oxide) gas as one of the products ?
A
3Cu + 8HNO3 (dil.) $$\to$$
B
Cu + 4HNO3 (conc.) $$\to$$
C
4Zn + 10HNO3 (dil.) $$\to$$
D
Zn + 4HNO3 (conc.) $$\to$$
4
NDA 2018 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
Which one of the following is a tribasic acid?
A
Hydrochloric acid
B
Nitric acid
C
Sulphuric acid
D
Phosphoric acid
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