NSTSE (National Science Talent Search Exam- Unified Council) Class 10: Questions 1392 - 1399 of 1484

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Question number: 1392

» Chemistry » Acids, Bases and Salts

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MCQ▾

Question

………… acid is used for producing explosives?

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 1393

» Chemistry » Periodic Classification of Elements

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MCQ▾

Question

The element with atomic number 35 belongs to which of the following block?

Choices

Choice (4)Response

a.

d block

b.

f block

c.

s block

d.

p block

Question number: 1394

» Chemistry » Periodic Classification of Elements

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MCQ▾

Question

Among the following elements which is not liquid at room temperature?

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 1395

» Chemistry » Periodic Classification of Elements

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MCQ▾

Question

In the periodic table which one of the following trends is not correct across the periods?

Choices

Choice (4)Response

a.

Electronegative to electropositive

b.

Base to acid forming

c.

Metallic to non – metallic

d.

Reducing to oxidizing

Question number: 1396

» Chemistry » Chemical Reactions and Equations

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Question

What are and in the above reaction?

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 1397

» Chemistry » Acids, Bases and Salts

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MCQ▾

Question

………. defined the scale.

Choices

Choice (4)Response

a.

Somerfield

b.

Arrhenius

c.

Bohr

d.

Sorenson

Question number: 1398

» Chemistry » Acids, Bases and Salts

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Question

What would be the value of a solution, when it turns blue litmus to red litmus?

Choices

Choice (4)Response

a.

8

b.

10

c.

9

d.

6

Question number: 1399

» Chemistry » Acids, Bases and Salts

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MCQ▾

Question

Which of the following acid dissociates when dissolved in water?

Choices

Choice (4)Response

a.

An oxalic acid

b.

A hydra acid

c.

A weak acid

d.

A strong acid

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