1
NDA General Ability 16 April 2023
MCQ (Single Correct Answer)
+4
-1.33
Change Language
Equal volume of all gases, when measured at the same temperature and pressure, contain an equal number of particles. Who proposed the above law?
A
Charles
B
Boyle
C
Avogadro
D
Lussac
2
NDA General Ability 16 April 2023
MCQ (Single Correct Answer)
+4
-1.33
Change Language
Airbags work on the principle of a chemical reaction triggered by the impact producing a gaseous product that causes a sudden volume change. Which one among the following chemical conversions is responsible for this?
A
Sodium azide into nitrogen gas
B
Solid carbon dioxide into gaseous carbon dioxide
C
Carbon dioxide into carbon monoxide
D
Sudden conversion of gaseous carbon dioxide into carbon monoxide
3
NDA General Ability 4 September 2022
MCQ (Single Correct Answer)
+4
-1.33
Change Language
Which one of the following is the correct reactivity series with water?
A
Zinc > Iron > Lead > Copper
B
Copper > Lead > Zinc > Iron
C
Copper > Zinc > Iron > Lead
D
Zinc > Copper > Iron > Lead
4
NDA General Ability 4 September 2022
MCQ (Single Correct Answer)
+4
-1.33
Change Language
Which one of the following metals floats in cold water?
A
Magnesium
B
Calcium
C
Potassium
D
Copper
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