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Q. No.

Which pair of elements can form alloy?

1. Zn and Cu

2. Fe and Hg

3. Fe and C

4. C and Pt

Q14:
Subtopic:  Intro - Flux, Leaching, Roasting & Calcination |
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Cupellation process is used in the metallurgy of:

1. copper

2. silver

3. lead

4. iron

Q15:
 67% 
Subtopic:  Refining Process |
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Chile saltpetre is the ore of:

1. Mg

2. K

3. Na

4. Ca

Q16:
 60% 
Subtopic:  Intro - Flux, Leaching, Roasting & Calcination |
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Blast furnace is used in the metallurgy of:

1. Al

2. Fe

3. gold

4. Ag

Q17:
 82% From NCERT 
Subtopic:  Intro - Flux, Leaching, Roasting & Calcination |
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Liquation is used to purify:

1. Pb

2. Sn

3. Bi

4. All

Q18:
 60% 
Subtopic:  Intro - Flux, Leaching, Roasting & Calcination |
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Wolframite ore contains:

1. Zn

2. W

3. Hf

4. Au

Q19:
 74% 
Subtopic:  Intro - Flux, Leaching, Roasting & Calcination |
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The 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

Q20:
 55% From NCERT 
Subtopic:  Intro - Flux, Leaching, Roasting & Calcination |
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Iron is made inactive or passive by:

1. H3PO4

2. conc. HNO3

3. conc. H2SO4

4. dil. HNO3

Q21:
 57% 
Subtopic:  Intro - Flux, Leaching, Roasting & Calcination |
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The inner lining of a blast furnace is  made up of:

1. graphite bricks

2. silica  bricks

3. fire clay bricks

4. basic bricks

Q22:
Subtopic:  Metallurgy of individual elements |
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Froth floatation process for the concentration of ores is a practical application of:

1. adsorption

2. absorption

3. coagulation

4. sedimentation

Q23:
 62% From NCERT 
Subtopic:  Intro - Flux, Leaching, Roasting & Calcination |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology
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