R4RIN – MCQs, Mock Tests | CBES Board Class 10 CHEMICAL INDUSTRIES MCQS

Process in which metal ions are reduced to free metals is called

1. roasting
2. smelting
3. Bessemerization
4. concentration

✅ Correct Answer: 2

Ore of iron is called

1. hematite
2. bauxite
3. halite
4. None of them

✅ Correct Answer: 1

Ore of silicon is called

1. galena
2. zinc blende
3. Cassiterite
4. silica

✅ Correct Answer: 4

The boiling point of lubricating oil is

1. 270 �C to 340 �C
2. 350 �C to 500 �C
3. 500 �C to 600 �C
4. more than 500 �C

✅ Correct Answer: 2

Process in which some minerals are converted to the oxide by heating in the air at a temperature below their melting point is called

1. roasting
2. smelting
3. Bessemerization
4. concentration

✅ Correct Answer: 1

The boiling point of fuel oil is

1. 270 �C to 340 �C
2. 350 �C to 500 �C
3. 500 �C to 600 �C
4. more than 500 �C

✅ Correct Answer: 3

Number of carbon atoms per molecule in lubricating oil is

1. 14 to 20
2. 20 to 50
3. 50 to 70
4. more than 70

✅ Correct Answer: 2

Crude oil is converted into useful products by

1. drilling
2. Solvay process
3. roasting
4. refining

✅ Correct Answer: 4

Ore of chromium is called

1. galena
2. zinc blende
3. cinnabar
4. chromite

✅ Correct Answer: 4

Which of the following is used as a fuel for power stations factories and ships?

1. diesel
2. lubricating oil
3. fuel oil
4. bitumen

✅ Correct Answer: 3

Which of the following is used as a fuel for buses trucks and trains?

1. diesel
2. lubricating oil
3. fuel oil
4. bitumen

✅ Correct Answer: 1

The percentage of nitrogen (N) in urea (CH4N2O) is

1. 0.5
2. 0.466
3. 0.4
4. 0.2

✅ Correct Answer: 2

Metallic compounds that occur naturally are called

1. metal oxides
2. minerals
3. ores
4. none of above

✅ Correct Answer: 2

Compounds which are added in the soil to provide essential elements to plants are called

1. carbonates
2. salts
3. fertilizers
4. metals

✅ Correct Answer: 3

The boiling point of naphtha is

1. below 20 �C
2. 35 �C to 70 �C
3. 70 �C to 120 �C
4. 170 �C to 250 �C

✅ Correct Answer: 3

Which of the following used in paving roads and making roofing material?

1. diesel
2. lubricating oil
3. fuel oil
4. bitumen

✅ Correct Answer: 4

The process of separating metal from ore is called

1. magnetic separation
2. floatation process
3. metallurgy
4. cyclone separation

✅ Correct Answer: 3

Which of the following is used as a fuel for motor cars and vehicles?

1. Liquid Petroleum Gas (LPG)
2. petrol
3. naphtha
4. kerosene

✅ Correct Answer: 2

Ore of aluminum is called

1. hematite
2. chalcopyrite
3. bauxite
4. halite

✅ Correct Answer: 3

Number of carbon atoms per molecule in naphtha are MCQ:

1. 1 to 4
2. 5 to 10
3. 8 to 12
4. 10 to 16

✅ Correct Answer: 3

Number of carbon atoms per molecule in bitumen are

1. 14 to 20
2. 20 to 50
3. 50 to 70
4. more than 70

✅ Correct Answer: 4

Solvay process is used to make

1. potassium carbonate
2. sodium carbonate
3. NaCl
4. NaOH

✅ Correct Answer: 2

The raw materials for the Solvay process include

1. ammonia
2. brine
3. lime stone
4. all of above

✅ Correct Answer: 4

Naturally occurring metallic compounds are called

1. metalloids
2. minerals
3. hard solids
4. soft solids

✅ Correct Answer: 2

The last step of metallurgy is

1. crushing grinding or pulverizing of the ore
2. concentration of the ore
3. extraction of metal
4. refining of metal

✅ Correct Answer: 4

Ore of sodium is called

1. hematite
2. chalcopyrite
3. bauxite
4. halite

✅ Correct Answer: 4

The fertilizer which doesnt affect the texture of the soil is

1. urea
2. ammonium sulphate
3. ammonium phosphate
4. super phosphate

✅ Correct Answer: 1

In magnetic separation magnets are used to separate

1. mineral and gangue
2. metal and mineral
3. metal and gangue
4. iron and steel

✅ Correct Answer: 1

Which of the following is used as a lubricant for machines and engines?

1. diesel
2. lubricating oil
3. fuel oil
4. bitumen

✅ Correct Answer: 2

Ore of lead is called

1. galena
2. zinc blende
3. cinnabar
4. chromite

✅ Correct Answer: 1

Number of carbon atoms per molecule in LPG is

1. 1 to 4
2. 5 to 10
3. 8 to 12
4. 10 to 16

✅ Correct Answer: 1

The boiling point of LPG is

1. below 20 �C
2. 35 �C to 70 �C
3. 70 �C to 120 �C
4. 170 �C to 250 �C

✅ Correct Answer: 1

The third step of the Solvay process is

1. preparation of ammonical brine
2. carbonation
3. filtration
4. calcination

✅ Correct Answer: 3

Number of carbon atoms per molecule in kerosene is

1. 1 to 4
2. 5 to 10
3. 8 to 12
4. 10 to 16

✅ Correct Answer: 4

Process in which sodium carbonate is manufactured is called

1. calcination
2. metallurgy
3. Solvay process
4. carbonation

✅ Correct Answer: 3

Raw materials for production of urea are

1. ammonia and carbon dioxide
2. oxygen and carbon dioxide
3. ammonia and oxygen
4. ammonia and phosphate

✅ Correct Answer: 1

Process in which mineral is separated from the gangue by some physical method is called

1. crushing grinding or pulverizing of the ore
2. concentration of the ore
3. extraction of metal
4. refining of metal

✅ Correct Answer: 2

The process in which metal is separated from its ore and prepared for use is called

1. metallurgy
2. mining
3. crushing
4. Solvay process

✅ Correct Answer: 1

Ore of zinc is called

1. galena
2. zinc blende
3. cinnabar
4. chromite

✅ Correct Answer: 2

The boiling point of petrol is

1. below 20 �C
2. 170-120 �C
3. 35-70 �C
4. 270-340 �C

✅ Correct Answer: 3

Ore of tin is called

1. galena
2. zinc blende
3. Cassiterite
4. silica

✅ Correct Answer: 3

The second step of metallurgy is

1. crushing grinding or pulverizing of the ore
2. concentration of the ore
3. extraction of metal
4. refining of metal

✅ Correct Answer: 2

When earths crust is drilled the hydrocarbon came out first is

1. petroleum
2. methane
3. ethane
4. butane

✅ Correct Answer: 2

The fourth step of the Solvay process is

1. preparation of ammonical brine
2. carbonation
3. filtration
4. calcination

✅ Correct Answer: 4

Number of carbon atoms per molecule in diesel is

1. 14 to 20
2. 20 to 50
3. 50 to 70
4. more than 70

✅ Correct Answer: 1

What are the raw materials used in the Solvay process?

1. ammonia
2. brine
3. lime stone
4.

✅ Correct Answer: 4

The boiling point of bitumen is

1. 270 �C to 340 �C
2. 350 �C to 500 �C
3. 500 �C to 600 �C
4. more than 500 �C

✅ Correct Answer: 4

The process of smelting involves the

1. reduction of metal oxides
2. oxidation of minerals
3. oxidation of metals
4. melting of metals

✅ Correct Answer: 1

Which of the following is used as cylinder gas for cooking? MCQ:

1. Liquefied petroleum gas (LPG)
2. petrol
3. naphtha
4. kerosene

✅ Correct Answer: 3

Third step of metallurgy is

1. crushing grinding or pulverizing of the ore
2. concentration of the ore
3. extraction of metal
4. refining of metal

✅ Correct Answer: 3

Which of the following is used as a chemical feedstock for making drugs plastics and other chemicals?

1. Liquid Petroleum Gas (LPG)
2. petrol
3. naphtha
4. kerosene

✅ Correct Answer: 3

Number of carbon atoms per molecule in Petrol is

1. 1 to 4
2. 5 to 10
3. 8 to 12
4. 10 to 16

✅ Correct Answer: 2

Ore of mercury is called

1. galena
2. zinc blende
3. cinnabar
4. chromite

✅ Correct Answer: 3

Ore of copper is called

1. hematite
2. chalcopyrite
3. bauxite
4. halite

✅ Correct Answer: 2

Number of carbon atoms per molecule in fuel oil is

1. 14 to 20
2. 20 to 50
3. 50 to 70
4. 70 to 90

✅ Correct Answer: 3

The process of converting minerals into oxides is called

1. smelting
2. reigning
3. roasting
4. Bessemerization

✅ Correct Answer: 3

The color of crude oil is

1. brownish black
2. white
3. transparent
4. light yellow

✅ Correct Answer: 1

The second step of the Solvay process is

1. preparation of ammonical brine
2. carbonation
3. filtration
4. calcination

✅ Correct Answer: 2

The first step of the Solvay process is

1. preparation of ammonical brine
2. carbonation
3. filtration
4. calcination

✅ Correct Answer: 1

The fifth step of the Solvay process is

1. preparation of ammonical brine
2. carbonation
3. preparation of carbon dioxide and slaked lime
4. recovery of ammonia

✅ Correct Answer: 3

Which of the following is used as a fuel for jet planes?

1. Liquefied petroleum gas (LPG)
2. petrol
3. naphtha
4. kerosene

✅ Correct Answer: 4

The boiling point of kerosene is

1. below 20 �C
2. 35 �C to 70 �C
3. 70 �C to 120 �C
4. 170 �C to 250 �C

✅ Correct Answer: 2

The first step of metallurgy is

1. crushing grinding or pulverizing of the ore
2. concentration of the ore
3. extraction of metal
4. refining of metal

✅ Correct Answer: 1