Sulphide 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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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich element occurs freely in nature?
1. Iodine
2. Sulphur
3. Phosphorus
4. Magnesium
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologySilver obtained by argentiferrous lead is purified by:
1. distillation
2. froth floatation
3. cupellation
4. reacting with KCN
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich 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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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyChloride ore among the following is:
1. malachite
2. magnesite
3. magnetite
4. Karnalite
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyChalcogens are:
1. hydrocarbons
2. ore forming elements
3. oxide forming elements
4. those having ability to catenate
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe following equation represents a method of purification of nickel by,
Ni + 2CO Ni(CO)4 Ni +4CO this method is:
impure pure
1. Cupellation
2. Mond's process
3. Van Arkel method
4. Zone refining
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich pair of elements can form alloy?
1. Zn and Cu
2. Fe and Hg
3. Fe and C
4. C and Pt
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyCupellation process is used in the metallurgy of:
1. copper
2. silver
3. lead
4. iron
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyChile saltpetre is the ore of:
1. Mg
2. K
3. Na
4. Ca
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology