NSO Level 1- Science Olympiad (SOF) Class 9: Questions 790 - 795 of 1123

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Question number: 790

» Mental Ability

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MCQ▾

Question

Group the given figure into three classes using each figure only once.

Group of the figure into classes

Group of the Figure into Classes

Image shows group of figure

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 791

» Physics » Motion

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MCQ▾

Question

Displacement of an object in unit time is called its

Choices

Choice (4) Response

a.

Retardation

b.

Acceleration

c.

Velocity

d.

Speed

Question number: 792

» Chemistry » The Nature of Matter

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MCQ▾

Question

Which of the following is not a property of hydrogen?

Choices

Choice (4) Response

a.

Odorless

b.

Combustible

c.

Colourless

d.

None of the above

Question number: 793

» Biology » Improvement in Food Resources

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MCQ▾

Question

Xanthium and Parthenium are commonly known as

Choices

Choice (4) Response

a.

Insects

b.

Weeds

c.

Bacteria

d.

Pests

Question number: 794

» Biology » Natural Resources

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MCQ▾

Question

‘Ozone-hole’ refers to

Choices

Choice (4) Response

a.

Thinning of the ozone layer

b.

A large sized hole in the ozone layer

c.

Thickening of ozone in the ozone layer

d.

Small holes scattered in the ozone layer

Question number: 795

» Chemistry » Atoms & Molecules

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MCQ▾

Question

. The explanation of this reaction on the basis of mole concept is

Choices

Choice (4) Response

a.

Two molecules of hydrogen combine with one molecule of oxygen to form two molecules of water.

b.

4 atoms of hydrogen combine with 2 atoms of oxygen to form 2 molecules of water.

c.

Both a. and b. are correct

d.

Question does not provide sufficient data or is vague

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