NSO Level 1- Science Olympiad (SOF) Class 7: Questions 272 - 277 of 593

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Question number: 272

» Heat

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MCQ▾

Question

If a plastic spoon is dipped in a cup of ice cream. Its other end becomes

Choices

Choice (4) Response

a.

Cold by the process of convection

b.

Cold by the process of conduction

c.

Does not become cold.

d.

Cold by the process of radiation

Question number: 273

» Physical and Chemical Changes

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MCQ▾

Question

Identify the given image and select the correct option indicating the change involved.

Image of the growth of seed to a plant

Image of the Growth of Seed to a Plant

Image of the growth of seed to a plant

Choices

Choice (4) Response

a.

Physical change.

b.

Neither chemical nor physical change.

c.

Chemical change.

d.

Combination of Physical & Chemical change

Question number: 274

» Acids, Bases and Salts

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MCQ▾

Question

Which of the following is example of base?

Example of base

Example of Base

Example of base

Choices

Choice (4) Response

a.

Vinegar.

b.

Pickle.

c.

Dish detergent.

d.

Question does not provide sufficient data or is vague

Question number: 275

» Fibre to Fabric

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MCQ▾

Question

During silk harvesting which are the main problems employees working in silk industry face?

Choices

Choice (4) Response

a.

Respiratory disorder

b.

Blisters

c.

Open wounds

d.

All a. , b. and c. are correct

Question number: 276

» Physical and Chemical Changes

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MCQ▾

Question

Which of the following is the common name for NaHCO3?

Choices

Choice (4) Response

a.

Baking soda

b.

Lime water

c.

Vinegar

d.

Limestone

Question number: 277

» Physical and Chemical Changes

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MCQ▾

Question

Respiration is a process.

Choices

Choice (4) Response

a.

Physical process

b.

Permanent process

c.

Biological process

d.

Chemical process

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