(A) All minerals are ores (R ) Ores are minerals from which metal can be extracted convenitly and economicallyA. If both (A) and (R ) are correct and (R ) is the correct explantion of (A )B. If both (A) and (R ) are correct and (R ) is not the correct explantion of (A )C. If (A) is correct but (R ) is incorrectD. If (A) is incorrect but (R ) is correct

(A) All minerals are ores (R ) Ores are minerals from which metal can

1.	(A) All minerals are ores (R ) Ores are minerals from which metal can be extracted convenitly and economicallyA. If both (A) and (R ) are correct and (R ) is the correct explantion of (A )B. If both (A) and (R ) are correct and (R ) is not the correct explantion of (A )C. If (A) is correct but (R ) is incorrectD. If (A) is incorrect but (R ) is correct
Answer» Correct Answer - D

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Consider the following statements and arrange in the order of true/false as given in the codes. `S_(1)`:Cuprite, Limonite and Zincite are oxide ares `S_(2)` Magnesite and carnallite are magnesium ores `S_(3)`: Chalcocyte and azurite are ores of copper `S_(4)` Feldspar an mica minerals contain aluminium.A. TTTTB. FTFFC. FFTTD. TTFT
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In the Froth Floatation process, zinc sulphide and lead sulphide can be separated by__________A. using collectorsB. adjusting the proportion of oil to waterC. using depressentD. using froth stablisers
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Bauxide ore is made up of `Al_(2)O_(3) + SiO_(2) + TiO_(2) + Fe_(2) O_(3)`. This ore is treated with conc. `NaOH` solution at `500 K` and `35` bar pressure for a few hours and filtered hot. In the filtrate, the species present areA. Na`NaAl(OH)_(4)` onlyB. `Na_(2)Ti(OH)_(6)`C. `NaAl(OH)_(4)` and `Na_(2)SiO_(3)` bothD. `Na_(2)SiO_(3)` Only
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The chemical composition of salg formed during the smelting process in the extraction of copper is :A. `Cu_(2)O+FeS`B. `FeSiO_(3)`C. `CuFeS_(2)`D. `Cu_(2)S++FeO`
Which of the following statement is incorrect about the extractive metallurgy of coper?A. Matte chiefly consists of cuprous sulphide and some ferrous sulphide.B. Most of the impurity of iron sulphide is removed as fusible slag during roasting.C. The copper pyrites is concentrated by froth floatiation process.D. The copper obtained from Bessomer converter is called as blister copper.
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