NSO Level 1- Science Olympiad (SOF) Class 10: Questions 615 - 621 of 1497

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Question 615

Question MCQ▾

Which of the following compound is define “Amphoterism” ?

Choices

Choice (4)Response

a.

b.

c.

d.

All a., b. and c. are correct

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Question 616

Question MCQ▾

Which of the following compound has IUPAC name “Formaldehyde” ?

Choices

Choice (4)Response

a.

b.

c.

HCHO

d.

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Question 617

Question MCQ▾

Which of the following is used calico printing, print industry and to joining the pieeces of china clay?

Choices

Choice (4)Response

a.

Water glass

b.

Calcium Chloride

c.

Silicones

d.

Carborandum

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Question 618

Question MCQ▾

Which of the following metallurgical operation is correct at high temperature?

Choices

Choice (4)Response

a.

Electrometallurgy

b.

Pyrometallurgy

c.

Hydrometallurgy

d.

All of the above

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Question 619

Question MCQ▾

Which of the below method is used to obtain pure metal or method used for purification of metal?

Choices

Choice (4)Response

a.

Electrolytic refining

b.

Gravity separation

c.

Froth Floatation

d.

Magnetic separation

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Question 620

Question MCQ▾

… element liberate when react with diluted nitric acid?

Choices

Choice (4)Response

a.

b.

c.

d.

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Question 621

Question MCQ▾

… has cleaning properties on clothes in water while using detergent?

Choices

Choice (4)Response

a.

Benzene sulphuric acid

b.

Benzene sulphide

c.

Benzene sulphate

d.

Benzene sulphonate

Edit