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Amongst the various ores of a metal (M) (sulphide, carbonates, oxides, hydraed or hydroxides) two ores [X] and [Y] show the following reactivity.
(i) [X] On calcinations gives a black solid (S), carbon dioxide and water.
(ii) [X] Dissolved in dil. HCl on reaction with KI gives a white precipitate (P) and iodine.
(iii) [Y] On roasting gives metal (M) and a gas (G1) which turns acidified K2Cr2O7 solution green.
(iv) [Y] On reaction with dil. HCl gives a white precipitate (Q) and another gas (G2) which turns lead acetate solution black and also reacts with gas (G1) to precipitate colloidal sulphur in presence of moisture. The M, S [X] and [Y] gives greenish blue flame.
Q.
The metal ores [X] and [Y] are respectively;
  • a)
    Carbonate and sulphide ores
  • b)
    Sulphide and carbonate ores
  • c)
    Carbonate and hydroxide ores
  • d)
    Carbonate and oxide ores
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
Amongst the various ores of a metal (M) (sulphide, carbonates, oxides,...
[X] = CuCO3 Cu (OH)2 or 2CuCO3. Cu(OH)2 ; [Y] = Cu2S or CuFeS2
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Amongst the various ores of a metal (M) (sulphide, carbonates, oxides, hydraed or hydroxides) two ores [X] and [Y] show the following reactivity.(i) [X] On calcinations gives a black solid (S), carbon dioxide and water.(ii) [X] Dissolved in dil. HCl on reaction with KI gives a white precipitate (P) and iodine.(iii) [Y] On roasting gives metal (M) and a gas (G1) which turns acidified K2Cr2O7 solution green.(iv) [Y] On reaction with dil. HCl gives a white precipitate (Q) and another gas (G2) which turns lead acetate solution black and also reacts with gas (G1) to precipitate colloidal sulphur in presence of moisture. The M, S [X] and [Y] gives greenish blue flame.Q.The metal ores [X] and [Y] are respectively;a)Carbonate and sulphide oresb)Sulphide and carbonate oresc)Carbonate and hydroxide oresd)Carbonate and oxide oresCorrect answer is option 'A'. Can you explain this answer?
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Amongst the various ores of a metal (M) (sulphide, carbonates, oxides, hydraed or hydroxides) two ores [X] and [Y] show the following reactivity.(i) [X] On calcinations gives a black solid (S), carbon dioxide and water.(ii) [X] Dissolved in dil. HCl on reaction with KI gives a white precipitate (P) and iodine.(iii) [Y] On roasting gives metal (M) and a gas (G1) which turns acidified K2Cr2O7 solution green.(iv) [Y] On reaction with dil. HCl gives a white precipitate (Q) and another gas (G2) which turns lead acetate solution black and also reacts with gas (G1) to precipitate colloidal sulphur in presence of moisture. The M, S [X] and [Y] gives greenish blue flame.Q.The metal ores [X] and [Y] are respectively;a)Carbonate and sulphide oresb)Sulphide and carbonate oresc)Carbonate and hydroxide oresd)Carbonate and oxide oresCorrect answer is option 'A'. Can you explain this answer? for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about Amongst the various ores of a metal (M) (sulphide, carbonates, oxides, hydraed or hydroxides) two ores [X] and [Y] show the following reactivity.(i) [X] On calcinations gives a black solid (S), carbon dioxide and water.(ii) [X] Dissolved in dil. HCl on reaction with KI gives a white precipitate (P) and iodine.(iii) [Y] On roasting gives metal (M) and a gas (G1) which turns acidified K2Cr2O7 solution green.(iv) [Y] On reaction with dil. HCl gives a white precipitate (Q) and another gas (G2) which turns lead acetate solution black and also reacts with gas (G1) to precipitate colloidal sulphur in presence of moisture. The M, S [X] and [Y] gives greenish blue flame.Q.The metal ores [X] and [Y] are respectively;a)Carbonate and sulphide oresb)Sulphide and carbonate oresc)Carbonate and hydroxide oresd)Carbonate and oxide oresCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Amongst the various ores of a metal (M) (sulphide, carbonates, oxides, hydraed or hydroxides) two ores [X] and [Y] show the following reactivity.(i) [X] On calcinations gives a black solid (S), carbon dioxide and water.(ii) [X] Dissolved in dil. HCl on reaction with KI gives a white precipitate (P) and iodine.(iii) [Y] On roasting gives metal (M) and a gas (G1) which turns acidified K2Cr2O7 solution green.(iv) [Y] On reaction with dil. HCl gives a white precipitate (Q) and another gas (G2) which turns lead acetate solution black and also reacts with gas (G1) to precipitate colloidal sulphur in presence of moisture. The M, S [X] and [Y] gives greenish blue flame.Q.The metal ores [X] and [Y] are respectively;a)Carbonate and sulphide oresb)Sulphide and carbonate oresc)Carbonate and hydroxide oresd)Carbonate and oxide oresCorrect answer is option 'A'. Can you explain this answer?.
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