NSO Level 1- Science Olympiad (SOF) Class 10: Questions 809 - 813 of 986

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Question number: 809

» Metals and Non - Metals

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MCQ▾

Question

Which of the not an oxide ore of Aluminum?

Choices

Choice (4) Response

a.

Common salt

b.

Trona

c.

Chile saltpeter

d.

Borax

Question number: 810

» Metals and Non - Metals

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MCQ▾

Question

Read the given statements and mark the correct option.

Statement 1: All metals react with oxygen to form metal oxides

Statement 2: All non-metals react with oxygen to form acidic or neutral oxides.

Choices

Choice (4) Response

a.

Only Statement 2 is true.

b.

Statements 1 and 2 are wrong.

c.

Statements 1 and 2 are true.

d.

Only Statement 1 is true.

Question number: 811

» Light - Reflection and Refraction

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MCQ▾

Question

Read the given statement and mark the correct option.

Statement 1: Magnification is defined as the ratio of the height of image to the height of object

Statement 2: The degree of convergence or divergence of light ray achieved by a lens is known as power of a lens

Choices

Choice (4) Response

a.

Only statement 1 is correct

b.

Statements 1 and 2 are correct

c.

Statements 1 and 2 are incorrect

d.

Only statement 2 is correct

Question number: 812

» Acids, Bases and Salts

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MCQ▾

Question

What gas is evolved when reaction of Zinc and Dilute Sulphuric Acid takes place?

Choices

Choice (4) Response

a.

Hydrogen gas

b.

Oxygen gas

c.

Water

d.

None of the above

Question number: 813

» Acids, Bases and Salts

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MCQ▾

Question

Which of the following is not a property of Neutral?

Choices

Choice (4) Response

a.

Texture of solution oily, sticky, watery, slippery

b.

Reactivity varies by Compound

c.

Smell like may burn nose

d.

Some Do Conductivity