Question
Question: Match the compounds/metal in (X) with their uses in (Y) : X Y A. Liquid sodium metal Ι Breathing a...
Match the compounds/metal in (X) with their uses in (Y) :
X Y
A. Liquid sodium metal Ι Breathing apparatus in
submarine
B. Potassium stearate ΙΙ Explosive
C. Potassium nitrate ΙΙΙ Coolant in nuclear reaction
D. Potassium superoxide ΙV Soft soap
A B C D A B C D
A
Ι ΙΙΙ ΙΙ ΙV
B
ΙΙΙ ΙV ΙΙ Ι
C
ΙΙ Ι ΙΙΙ ΙV
D
ΙV ΙΙ ΙΙΙ Ι
Answer
ΙΙΙ ΙV ΙΙ Ι
Explanation
Solution
(1) Liquid sodium metal is used as coolant in nuclear reaction.
(2) Steric acid is CH3(CH2)16 COOH and potassium stearate is CH3(CH2)16 COOK which is used in the preparation of soft soaps.
(3) Potassium nitrate is used in gun powder as explosive.
(4) Potassium superoxide absorbs CO and CO2 and liberates oxygen gas. Therefore it is used in breathing apparatus in submarine