NSO Level 1- Science Olympiad (SOF) Class 10: Questions 502 - 505 of 986

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Question number: 502

» Periodic Classification of Elements

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MCQ▾

Question

Read the given statements and mark the correct option.

Statement 1: The Chalcogens group containing

Statement 2: The alkali metals are so called because reaction with water forms alkalis

Choices

Choice (4) Response

a.

Only statement 1 is correct

b.

Only statement 2 is correct

c.

Statements 1 and 2 are incorrect

d.

Statements 1 and 2 are correct

Question number: 503

» Periodic Classification of Elements

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MCQ▾

Question

Read the given statements and mark the correct option.

Statement 1: Limitations of Mendeleev’s classification the atomic masses do not increase in a regular manner in going from one element to the next.

Statement 2: Modern Periodic Law is Properties of the elements are the periodic function of their atomic numbers.

Choices

Choice (4) Response

a.

Only statement 2 is correct

b.

Statements 1 and 2 are incorrect

c.

Statements 1 and 2 are correct

d.

Only statement 1 is correct

Question number: 504

» Carbon and Its Componds

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MCQ▾

Question

Which is not a physical property of carbon?

Choices

Choice (4) Response

a.

Carbon is Very brittle.

b.

Diamond is highly transparent

c.

Graphite is insulator of electrical conductivity.

d.

Graphite, diamonds and coal are all nearly pure forms of carbon

Passage

Direction: Observe the following diagram and answer the question below

Image of the eye and lens

Image of the Eye and Lens

Image of the eye and lens

Question number: 505 (1 of 4 Based on Passage) Show Passage

» Human Eye and Colourful World

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MCQ▾

Question

Myopia caused by

Choices

Choice (4) Response

a.

Decrease in curvature of the lens

b.

Increase in length of the eyeball

c.

Question does not provide sufficient data or is vague

d.

All of the above

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