Which 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 & BiologyBlast furnace is used in the metallurgy of:
1. Al
2. Fe
3. gold
4. Ag
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyLiquation is used to purify:
1. Pb
2. Sn
3. Bi
4. All
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWolframite ore contains:
1. Zn
2. W
3. Hf
4. Au
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe process in which ore is heated in limited supply of air below its melting point is known as:
1. Roasting
2. Calcination
3. Reduction
4. Distillation
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyIron is made inactive or passive by:
1. H3PO4
2. conc. HNO3
3. conc. H2SO4
4. dil. HNO3
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe inner lining of a blast furnace is made up of:
1. graphite bricks
2. silica bricks
3. fire clay bricks
4. basic bricks
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyFroth floatation process for the concentration of ores is a practical application of:
1. adsorption
2. absorption
3. coagulation
4. sedimentation
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology