1
NDA General Ability 4 September 2022
MCQ (Single Correct Answer)
+4
-1.33
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
2
NDA General Ability 4 September 2022
MCQ (Single Correct Answer)
+4
-1.33
Which one of the following metals floats in cold water?
A
Magnesium
B
Calcium
C
Potassium
D
Copper
3
NDA General Ability 4 September 2022
MCQ (Single Correct Answer)
+4
-1.33
Which one of the following solutions is not capable of conducting electricity?
A
Copper sulphate
B
Sodium chloride
C
Sugar
D
Sodium hydroxide
4
NDA General Ability 4 September 2022
MCQ (Single Correct Answer)
+4
-1.33
Which of the following compounds undergoes/undergo thermal decomposition?
A
Zinc oxide
B
Silver oxide and zinc oxide
C
Silver oxide
D
Magnesium oxide