NSTSE (National Science Talent Search Exam- Unified Council) Class 8: Questions 1858 - 1864 of 2028

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Question 1858

Question

MCQ▾

Which of the following ionic species are formed by metals?

Choices

Choice (4)Response

a.

Anions

b.

Cations & Anions

c.

Cations

d.

Do not form ions

Question 1859

Question

MCQ▾

The gas in LPG cylinder (cooking gas) is liquefied by?

Choices

Choice (4)Response

a.

Increasing volume

b.

Replacing pressure

c.

Applying pressure

d.

Increasing temperature

Question 1860

Question

MCQ▾

Which of the following chemical is present in matchstick when it combust?

Choices

Choice (4)Response

a.

Starch and wool

b.

Potassium chlorate

c.

Antimony sulphide

d.

Phosphorous

Question 1861

Question

MCQ▾

Which of the following leads to the stability of metals?

Choices

Choice (4)Response

a.

Loss or gain of electrons

b.

Loss of electrons

c.

Gain of electrons

d.

None of the above

Question 1862

Question

MCQ▾

In nature renewable source of energy are produced________?

Choices

Choice (4)Response

a.

Quarterly

b.

Annually

c.

Continuously

d.

Biennial

Question 1863

Question

MCQ▾

Which type of reaction is combustion?

Choices

Choice (4)Response

a.

Redox reaction

b.

Substitution

c.

Oxidation

d.

Reduction

Question 1864

Question

MCQ▾

Select the true statement from the following regarding petroleum?

Choices

Choice (4)Response

a.

Heavies than water and insoluble in it

b.

Lighter than water & insoluble in water

c.

Heavies than water and soluble in it

d.

Lighter than water and soluble in it.

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