NSO Level 1- Science Olympiad (SOF) Class 7: Questions 223 - 228 of 593

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Question number: 223

» Physical and Chemical Changes

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MCQ▾

Question

Which of the following is not a physical property of a substance?

Choices

Choice (4) Response

a.

Shape

b.

Flammability

c.

Size

d.

Density

Question number: 224

» Fibre to Fabric

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MCQ▾

Question

Silkworms producing Tussar silk are reared on which plant?

Image of the Silkworms

Image of the Silkworms

Image of the Silkworms

Choices

Choice (4) Response

a.

Sal

b.

Neem

c.

Castor

d.

Polyanthus

Question number: 225

» Acids, Bases and Salts

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MCQ▾

Question

Acids are stored in which of the following containers?

Image shows containers

Image Shows Containers

Image shows containers

Choices

Choice (4) Response

a.

Metallic container

b.

Plastic container

c.

Glass container

d.

None of the above

Question number: 226

» Fibre to Fabric

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MCQ▾

Question

Silk fibre is produced at which stage in the life cycle of Silkworm?

Choices

Choice (4) Response

a.

The life cycle of Silkworm : Choice A

The Life Cycle of Silkworm: Choice A

The life cycle of Silkworm

b.

The life cycle of Silkworm : Choice B

The Life Cycle of Silkworm: Choice B

The life cycle of Silkworm

c.

The life cycle of Silkworm : Choice C

The Life Cycle of Silkworm: Choice C

The life cycle of Silkworm

d.

The life cycle of Silkworm : Choice D

The Life Cycle of Silkworm: Choice D

The life cycle of Silkworm

Question number: 227

» Acids, Bases and Salts

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MCQ▾

Question

Red litmus paper is dipped in a solution. The color of the red litmus paper remains red. What is the nature of the solution?

Red litmus paper in figure

Red Litmus Paper in Figure

Red litmus paper in figure

Choices

Choice (4) Response

a.

Basic

b.

Acidic

c.

Either acidic or neutral

d.

All of the above

Question number: 228

» Physical and Chemical Changes

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MCQ▾

Question

Priya took 2 destarched potted plants X and Y and set up an experiment as shown in the figure. She left both the plants in sunlight for few hours and then tested the plants X and Y for starch. Plant X showed presence of starch while plant Y gave negative results for starch test.

Image of the potted plants X and Y

Image of the Potted Plants X and Y

Image of the potted plants X and Y

What is proved by this?

Choices

Choice (4) Response

a.

Light is necessary for photosynthesis.

b.

Chlorophyll is necessary for photosynthesis.

c.

Carbon dioxide is necessary for photosynthesis.

d.

None of the above

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