Chemistry-Structure of the Atom (NSO Level 1- Science Olympiad (SOF) Class 9): Questions 1 - 7 of 48

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Question number: 1

» Chemistry » Structure of the Atom

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Question

Which of the following statements is true about isotopes?

Choices

Choice (4) Response

a.

Chemical properties of isotopes of an element are similar but their physical properties are different.

b.

Many elements consists of a mixture of isotopes

c.

Atomic number of isotopes is same but mass numbers are different

d.

All a. , b. and c. are correct

Question number: 2

» Chemistry » Structure of the Atom

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Question

Which of the following is not a part of an atom?

Choices

Choice (4) Response

a.

Proton

b.

Electron

c.

Neon

d.

Neutron

Question number: 3

» Chemistry » Structure of the Atom

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Question

Identify the particle from the given clue

1. Is negatively charged.

2. Present outside the nucleus of an atom.

3. Has negligible mass.

Choices

Choice (4) Response

a.

Proton

b.

Electron

c.

Neutron

d.

All of the above

Passage

Direction: Neha collected information about some elements and made a table. She wants to study deeply about the elements. Please help her to find out the answers of some questions.

Table of the collected information

Table of the collected information

Element

No, of protons

No. of neutrons

X

4

5

Y

18

22

Z

20

20

Question number: 4 (1 of 5 Based on Passage) Show Passage

» Chemistry » Structure of the Atom

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Question

The relation between elements Y and Z is

Choices

Choice (4) Response

a.

They are isotopes

b.

They are isobars

c.

They are inert gases

d.

Question does not provide sufficient data or is vague

Question number: 5 (2 of 5 Based on Passage) Show Passage

» Chemistry » Structure of the Atom

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Question

Name the element Y

Choices

Choice (4) Response

a.

Calcium

b.

Oxygen

c.

Argon

d.

Berilium

Question number: 6 (3 of 5 Based on Passage) Show Passage

» Chemistry » Structure of the Atom

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MCQ▾

Question

Which of the following statements is true about element Z?

Choices

Choice (4) Response

a.

Number of electrons is 20

b.

Atomic number is 20

c.

Mass number is 40

d.

All a. , b. and c. are correct

Question number: 7 (4 of 5 Based on Passage) Show Passage

» Chemistry » Structure of the Atom

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MCQ▾

Question

Name the element Z

Choices

Choice (4) Response

a.

Argon

b.

Calcium

c.

Berilium

d.

Oxygen

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