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Chemistry 1488 MCQs [All-Courses]

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In melting of iron, which of the following reactions takes place in Bladt Furnace at 400°C- 600°C________?

A CaO+ SiO2——> CaSiO3

B 2FeS+3O2——–> 2Fe+ SO2

C FeSiO3———> FeSiO3

D Fe2O3+ 3CO——–> 2Fe+ 3CO2

Review Detailed Answer

Correct Answer: Fe2O3+ 3CO——–> 2Fe+ 3CO2

All the elements in group VIA are ___________________ in nature?

A hygroscopic

B metals

C polymeric

D all of above

Review Detailed Answer

Correct Answer: polymeric

Phosphorus helps in the growth of_________________?

A root

B leave

C stem

D seed

Review Detailed Answer

Correct Answer: seed

Parke’s process is used in the extraction of________?

A Iron

B Sodium

C Silver

D Zinc

Review Detailed Answer

Correct Answer: Silver

Phosphoric acid is a weak acid and its basicity is____________________?

A 1

B 3

C zero

D 2

Review Detailed Answer

Correct Answer: 3

What is clinker ?

A roasted calcareous material

B roasted argillaceous material

C roasted calcareous and argillaceous material

D roasted gypsum

Review Detailed Answer

Correct Answer: roasted calcareous and argillaceous material

Which metal is used as a reducing agent in Smelting______?

A C

B Zn

C Al

D Cu

Review Detailed Answer

Correct Answer: C

P2O5 is a hygroscopic powder which sublimes at______________?

A 260°C

B 360°C

C 630°C

D 620°C

Review Detailed Answer

Correct Answer: 360°C

The potassium present in plant help the plant to___________________?

A form starch sugar and fibrous material

B ripen the seeds and fruits

C increase the resistance against disease

D all the above statements are correct

Review Detailed Answer

Correct Answer: all the above statements are correct

A process used for the Concentration of Ore is________?

A Roasting

B Forth flotation

C Electrolysis

D Distillation

Review Detailed Answer

Correct Answer: Forth flotation

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Chemistry 1488 MCQs [All-Courses]

All Topics 1488

All Topics 1488

In melting of iron, which of the following reactions takes place in Bladt Furnace at 400°C- 600°C________?

All the elements in group VIA are ___________________ in nature?

Phosphorus helps in the growth of_________________?

Parke’s process is used in the extraction of________?

Phosphoric acid is a weak acid and its basicity is____________________?

What is clinker ?

Which metal is used as a reducing agent in Smelting______?

P2O5 is a hygroscopic powder which sublimes at______________?

The potassium present in plant help the plant to___________________?

A process used for the Concentration of Ore is________?