NSTSE (National Science Talent Search Exam- Unified Council) Class 10: Questions 1451 - 1458 of 1483

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Question 1451

Question MCQ▾

Which of the following metal is added to 22 carat gold to make ornaments?

Choices

Choice (4)Response

a.

Platinum

b.

Copper

c.

Aluminium

d.

Iron

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Question 1452

Question MCQ▾

what is the conjugate base of in the above reaction?

Choices

Choice (4)Response

a.

b.

c.

d.

Question does not provide sufficient data or is vague

Edit

Question 1453

Question MCQ▾

… gas is evolved when Copper metal is reacted with diluted

Choices

Choice (4)Response

a.

b.

c.

d.

Edit

Question 1454

Question MCQ▾

Which alloy is used to make pressure cooker?

Choices

Choice (4)Response

a.

Magnesium

b.

Alnico

c.

Duralumin

d.

Nickel Steel

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Question 1455

Question MCQ▾

Sulphur dioxide can act as?

Choices

Choice (4)Response

a.

Oxidizing agent

b.

Reducing agent

c.

Bleaching agent

d.

All a., b. and c. are correct

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Question 1456

Question MCQ▾

Which of the following order is true regarding acid strength?

Choices

Choice (4)Response

a.

b.

c.

d.

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Question 1457

Question MCQ▾

What is the functional group representation for carboxylic acids?

Choices

Choice (4)Response

a.

Chemical Reaction: Choice A

b.

Chemical Reaction: Choice B

c.

Chemical Reaction: Choice C

d.

Chemical Reaction: Choice D

Edit

Question 1458

Question MCQ▾

Which of the following is also known as “Carbinol” ?

Choices

Choice (4)Response

a.

b.

c.

d.

Edit