NSO Level 1- Science Olympiad (SOF) Class 9: Questions 340 - 345 of 1123

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Question number: 340

» Chemistry » Structure of the Atom

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Question

An isotope of Cobalt is used

Choices

Choice (4) Response

a.

In finding the age of fossils

b.

In the treatment of cancer

c.

As a fuel in nuclear reactors

d.

All of the above

Question number: 341

» Chemistry » The Nature of Matter

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Question

Which of the following is a metal that exists in liquid state?

Choices

Choice (4) Response

a.

Sodium

b.

Mercury

c.

Potassium

d.

None of the above

Question number: 342

» Chemistry » The Nature of Matter

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MCQ▾

Question

Brass is an alloy of

Choices

Choice (4) Response

a.

Copper and gold

b.

Zinc and silver

c.

Gold and silver

d.

Copper and zinc

Question number: 343

» Mental Ability

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Question

Assuming that the numbers in each set follow a similar pattern find the missing number?

 Image shows the number in a pattern

Image Shows the Number in a Pattern

This image shows the number in a pattern

Choices

Choice (4) Response

a.

52

b.

49

c.

50

d.

55

Passage

Direction: Read the following carefully and answer questions

Ankita was doing experiment in the chemistry lab. She took equal quantities of liquids from the bottles labelled and in a test tube and shook well. She kept the test tube undisturbed for some time.

Question number: 344 (1 of 6 Based on Passage) Show Passage

» Chemistry » Atoms & Molecules

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Question

In the chemical reaction

Mass of the test tube + Mass of solution + Mass of solution = Mass of the test tube + Mass of + Mass of solution. The law supporting this statement is

Choices

Choice (4) Response

a.

Law of constant proportion

b.

Law of conservation of mass

c.

Law of conservation of momentum

d.

None of the above

Question number: 345 (2 of 6 Based on Passage) Show Passage

» Chemistry » Atoms & Molecules

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Question

In the reaction, initial mass includes

Choices

Choice (4) Response

a.

Mass of the test tube + Mass of solution

b.

Mass of the test tube + Mass of solution + Mass of solution

c.

Mass of and

d.

Mass of the test tube + Mass of + Mass of solution

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