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Q. No.High purity copper metal is obtained by:
1. Carbon reduction
2. Hydrogen reduction
3. Electrolytic reduction
4. Thermite process
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High Yield NEET MCQ Books for 11th Physics & ChemistryAluminothermic process is used for the extraction of metals, whose oxides are:
1. fusible
2. not easily reduced by carbon
3. not easily reduced by hydrogen
4. strongly basic
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High Yield NEET MCQ Books for 11th Physics & ChemistryPurest form of iron is:
1. cast iron
2. hard steel
3. stainless steel
4. wrought iron
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High Yield NEET MCQ Books for 11th Physics & ChemistryThomas slag is:
1. calcium silicate
2. calcium phosphate
3. tricalcium phosphate and calcium silicate
4. calcium ammonium phosphate
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High Yield NEET MCQ Books for 11th Physics & ChemistryCorundum is:
1. SrO2
2. Al2O3
3. CaCl2
4. Cu2Cl2
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High Yield NEET MCQ Books for 11th Physics & ChemistryHeating of carbonate ores to remove carbon is called as:
1. Roasting
2. Calcination
3. Smelting
4. Fluxing
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High Yield NEET MCQ Books for 11th Physics & ChemistrySulphide ores are common for the metals:
1. Ag, Cu and Pb
2. Ag, Cu and Sn
3. Ag, Mg and Pb
4. Al, Cu and Pb
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High Yield NEET MCQ Books for 11th Physics & ChemistryWhich element occurs freely in nature?
1. Iodine
2. Sulphur
3. Phosphorus
4. Magnesium
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High Yield NEET MCQ Books for 11th Physics & ChemistrySilver obtained by argentiferrous lead is purified by:
1. distillation
2. froth floatation
3. cupellation
4. reacting with KCN
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High Yield NEET MCQ Books for 11th Physics & ChemistryWhich process is not used in purification of bauxite?
1. Hall's method
2. Baeyer's method
3. Serpek's method
4. Frankland's method
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High Yield NEET MCQ Books for 11th Physics & ChemistrySelect Question Set:
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