NSO Level 1- Science Olympiad (SOF) Class 9: Questions 557 - 563 of 1123

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Question number: 557

» Chemistry » Atoms & Molecules

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MCQ▾

Question

According to the law of conservation of mass, the ratio of hydrogen and oxygen in 9g of water is

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 558

» Physics » Motion

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MCQ▾

Question

Which of the following is not an equation of motion?

Choices

Choice (4)Response

a.

b.

c.

d.

None of the above

Question number: 559

» Chemistry » Structure of the Atom

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MCQ▾

Question

Which of the statements is true about canal rays?

Choices

Choice (4)Response

a.

These rays were discovered by Goldstein in 1886.

b.

These rays are positively charged radiations.

c.

The positively charged particles in canal rays are called protons.

d.

All a. , b. and c. are correct

Question number: 560

» Biology » Fundamentals Unit of Life

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MCQ▾

Question

Centrioles are associated with

Choices

Choice (4)Response

a.

Respiration

b.

Reproduction

c.

Spindle formation

d.

DNA Synthesis

Question number: 561

» Chemistry » Atoms & Molecules

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MCQ▾

Question

An element Q is divalent and element P is tetravalent. The compound formed by these two elements will be

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 562

» Biology » Health & Diseases

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MCQ▾

Question

The second basic principle of prevention of infectious disease is

Choices

Choice (4)Response

a.

Avoiding exposure to an infection

b.

Timely vaccination

c.

Wearing clean clothes

d.

Availability of proper and sufficient food

Question number: 563

» Chemistry » Structure of the Atom

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MCQ▾

Question

Complete the table

Table of the Atomic number

Table of the Atomic number

Sl. no

Atomic number

Mass number

Number of protons

Number of electrons

Number of neutrons

Name of atomic species

I

1

1

1

1

0

ii

1

2

1

1

1

iii

2

4

2

2

2

Choices

Choice (4)Response

a.

i) Protium, ii) Helium, iii) Deuterium

b.

i) Deuterium, ii) Protium, iii) Helium

c.

i) Protium, ii) Deuterium, iii) Helium

d.

i) Helium, ii) Deuterium, iii) Protium

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