NSTSE (National Science Talent Search Exam- Unified Council) Class 8: Questions 1902 - 1909 of 2028

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Question 1902

Question

MCQ▾

Homogeneous solid solution of two or more metals is termed as?

Choices

Choice (4)Response

a.

Metalloid solution

b.

Alloy

c.

Allotrope

d.

Isotope

Question 1903

Question

MCQ▾

Which of the following metals are present in ‘bell metal’ ?

Choices

Choice (4)Response

a.

Copper and tin

b.

Calcium and magnesium

c.

Zinc and copper

d.

Zinc and magnesium

Question 1904

Question

MCQ▾

Liquid petroleum gas LPG (Cooking gas) is a mixture of?

Choices

Choice (4)Response

a.

Butane and isobutane, propane

b.

Propane and Ethane

c.

Methane and Ethane

d.

Butane and Ethane

Question 1905

Question

MCQ▾

Select the fuel with highest calorific value from the following?

Choices

Choice (4)Response

a.

Natural gas

b.

Coke

c.

Kerosene

d.

Petrol

Question 1906

Question

MCQ▾

What is the temperature used in fractional distribution method for refining fuel oil?

Choices

Choice (4)Response

a.

b.

c.

d.

Question 1907

Question

MCQ▾

What is the reason behind mercury is only used in thermometers?

Choices

Choice (4)Response

a.

It expands on heating

b.

It does not wet on the glass

c.

It is a liquid

d.

All a., b. and c. are correct

Question 1908

Question

MCQ▾

Calamine is the ore of?

Choices

Choice (4)Response

a.

b.

c.

Magnesium –

d.

All of the above

Question 1909

Question

MCQ▾

If a fuel has calorific value of and amount of heat produced by burning that fuel is Joules, now how much fuel was burnt (in kg) ?

Choices

Choice (4)Response

a.

b.

c.

d.

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