NSO Level 1- Science Olympiad (SOF) Class 10: Questions 558 - 564 of 986

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Question number: 558

» Acids, Bases and Salts

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MCQ▾

Question

Which one is the correct for Sulphuric Acid was placed on a litmus paper. The color of the paper turn in to

Choices

Choice (4) Response

a.

Turned Red

b.

Turned Blue

c.

Turned Orange

d.

Turned Green

Question number: 559

» Light - Reflection and Refraction

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MCQ▾

Question

Choose correct one? Use of concave mirror is seen in

Choices

Choice (4) Response

a.

Solar furnaces

b.

For shaving

c.

Torches, searchlights and vehicles headlights

d.

All a. , b. and c. are correct

Question number: 560

» Metals and Non - Metals

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MCQ▾

Question

In addition to copper, brass also contains

Choices

Choice (4) Response

a.

Aluminum

b.

Zinc

c.

Lead

d.

Tin

Passage

Direction: Read the following passage and answer the question.

A silvery metal that resists corrosion even at high temperatures.

Metal is used in batteries, metal is resists corrosion and is used to plate other metals to protect them. Metal has a long history of being used in coins.

Other hand non-metal is colorless, odorless gas that is totally unreactive.

Non-metal is used as a cooling medium. Moreover, because of its low density non-metal is often used to fill decorative balloons, weather balloons and airships.

Question number: 561 (1 of 3 Based on Passage) Show Passage

» Metals and Non - Metals

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MCQ▾

Question

Among the following choices, the non-metal is

Choices

Choice (4) Response

a.

Argon

b.

Radon

c.

Helium

d.

Phosphorus

Question number: 562 (2 of 3 Based on Passage) Show Passage

» Metals and Non - Metals

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MCQ▾

Question

Among the following choices, which is not correct?

Choices

Choice (4) Response

a.

Non-metal has low melting and boiling points

b.

Metal react with oxygen to form basic oxides

c.

Non-metal Dull sound when hit with hammer

d.

Metal React with oxygen to form acidic oxides

Question number: 563 (3 of 3 Based on Passage) Show Passage

» Metals and Non - Metals

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MCQ▾

Question

Among the following choices, the metal is

Choices

Choice (4) Response

a.

Nickel

b.

Iron

c.

Zinc

d.

Gallium

Question number: 564

» Light - Reflection and Refraction

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MCQ▾

Question

If the absolute refractive indices of water, glass and diamond are 1.33,1.50 and 2.42, respectively, then which medium is optically densest?

Choices

Choice (4) Response

a.

Water

b.

Diamond

c.

Glass

d.

None of the above