NCERT Based General Studies (GS): Questions 2385 - 2390 of 3450

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Question number: 2385

» Science » Class-8 NCERT » Combustion and Flame (Fuel)

MCQ▾

Question

Characteristics of ideal fuel are:

Choices

Choice (4) Response
a.

Should not leave much residue after combustion

b.

Should not produce toxic products

c.

Proper ignition temperature

d. All a. , b. and c. are correct

Question number: 2386

» Science » Class-8 NCERT » Combustion and Flame (Fuel)

MCQ▾

Question

Synthetic gas is formed:

Choices

Choice (4) Response
a.

When powdered coal is heated with hydrogen under pressure in the presence of catalyst

b.

Powered coal is mixed with hot solvent

c.

Powered coke is mixed with hot solvent

d.

When coke is heated with hydrogen

Question number: 2387

» Science » Class-8 NCERT » Combustion and Flame (Fuel)

MCQ▾

Question

Full form of CNG is:

Choices

Choice (4) Response
a.

Combined natural gas

b.

Combustion natural gas

c.

Compressed natural gas

d.

Compact Natural Gas

Question number: 2388

» Science » Class-8 NCERT » Coal and Petroleum (Coal)

MCQ▾

Question

Coal gas is a mixture of:

Choices

Choice (4) Response
a.

Hydrocarbons with salt, water and earthly particles.

b.

Hydrogen, methane and carbon monoxide

c.

90 % carbon and is porous

d.

Sulphur, oxygen, nitrogen

Question number: 2389

» Science » Class-8 NCERT » Coal and Petroleum (Exhaustible Natural Resources)

MCQ▾

Question

Tips for efficiency of vehicle and conserving environment are:

Choices

Choice (4) Response
a.

Ensuring correct tyre pressure so that the vehicle runs efficiently

b.

Driving at a constant speed for better mileage and less pollution

c.

Switching off engine at traffic light

d. All a. , b. and c. are correct

Question number: 2390

» Science » Class-8 NCERT » Combustion and Flame (Fuel)

MCQ▾

Question

Which gas combines with haemoglobin of blood?

Choices

Choice (4) Response
a.

NO2

b.

CO

c.

SO2

d.

CO2

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