High purity copper metal is obtained by:

1. carbon reduction

2. hydrogen reduction

3. electrolytic reduction

4. thermite process

Subtopic:  Intro - Flux, Leaching, Roasting & Calcination |
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NEET 2022 - Target Batch - Aryan Raj Singh

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Aluminothermic 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

Subtopic:  Intro - Flux, Leaching, Roasting & Calcination |
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NEET 2022 - Target Batch - Aryan Raj Singh

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Purest form of iron is:

1. cast iron

2. hard steel

3. stainless steel

4. wrought iron

Subtopic:  Intro - Flux, Leaching, Roasting & Calcination |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

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Thomas slag is:

1. calcium silicate

2. calcium  phosphate

3. tricalcium phosphate and calcium silicate

4. calcium ammonium phosphate

Subtopic:  Intro - Flux, Leaching, Roasting & Calcination |
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NEET 2022 - Target Batch - Aryan Raj Singh

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Corundum is:

1. SrO2

2. Al2O3

3. CaCl2

4. Cu2Cl2

 

Subtopic:  Intro - Flux, Leaching, Roasting & Calcination |
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NEET 2022 - Target Batch - Aryan Raj Singh

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Heating of carbonate ores to remove carbon is called as:

1. roasting

2. calcination

3. smelting

4. fluxing

Subtopic:  Intro - Flux, Leaching, Roasting & Calcination |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

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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

Subtopic:  Intro - Flux, Leaching, Roasting & Calcination |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

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Which element occurs freely in nature?

1. Iodine

2. Sulphur

3. Phosphorus

4. Magnesium

Subtopic:  Intro - Flux, Leaching, Roasting & Calcination |
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NEET 2022 - Target Batch - Aryan Raj Singh

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Silver obtained by argentiferrous lead is purified by:

1. distillation

2. froth floatation

3. cupellation

4. reacting with KCN

Subtopic:  Refining Process |
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NEET 2022 - Target Batch - Aryan Raj Singh

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Which process is not used in purification of bauxite?

1. Hall's method

2. Baeyer's method

3. Serpek's method

4. Frankland's method

Subtopic:  Intro - Flux, Leaching, Roasting & Calcination | Metallurgy of individual elements |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

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