Matter given in List-I have use in List-II match list select correct code for your answer. List - I List - II (P) Most stable allotrope of carbon (1) Dry test of Co 2 + / Cu 2 + / Mn + 2 etc. (Q) Micr

Question

Matter given in List-I have use in List-II match list select correct code for your answer.

List - I	List - II
(P) Most stable allotrope of carbon	(1) Dry test of $Co^{2 +} / Cu^{2 +} / Mn^{+ 2}$ etc.
(Q) Microcosmic salt	(2) Fire extinguisher
(R) Dry ice	(3) Fuel in industrial process
(S) Water gas	(4) Dry Lubricant

TestHub · Accepted Answer

(P) Most stable allotrope of carbon is graphite, used as a dry lubricant. So, P-4.

(Q) Microcosmic salt is used in bead tests for metal ions like Co²⁺, Cu²⁺, Mn²⁺. So, Q-1.

(R) Dry ice (solid CO₂) is used in fire extinguishers. So, R-2.

(S) Water gas (CO + H₂) is a fuel in industrial processes. So, S-3.

The correct match is P-4, Q-1, R-2, S-3.

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