NSO Level 1- Science Olympiad (SOF) Class 7: Questions 183 - 187 of 597

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Question number: 183

» Nutrition in Plants and Animals

Edit
MCQ▾

Question

What is the principle of starch test using iodine as an indicator? Select the correct option.

Iodine test for starch

Iodine Test for Starch

Choices

Choice (4)Response

a.

Iodine reacts with starch and gives black-blue colour.

b.

Iodine changes colour in presence of starch.

c.

Question does not provide sufficient data or is vague

d.

All of the above

Question number: 184

» Heat

Edit
MCQ▾

Question

What is the form of energy that produces feeling of hotness is called?

Choices

Choice (4)Response

a.

Frictional energy

b.

Heat energy

c.

Kinetic energy

d.

All of the above

Question number: 185

» Fibre to Fabric

Edit
MCQ▾

Question

The following steps are involved in the processing of which fibre?

The processing fibre

The Processing Fibre

  1. Shearing

  2. Scouring

  3. Sorting

  4. Combing

  5. Dyeing

  6. Spinning

Choices

Choice (4)Response

a.

Nylon

b.

Wool

c.

Cotton

d.

Silk

Question number: 186

» Heat

Edit
MCQ▾

Question

A polished silvery surface is a of heat.

Choices

Choice (4)Response

a.

Good reflector

b.

Good conductor

c.

Poor reflector

d.

None of the above

Question number: 187

» Acids, Bases and Salts

Edit
MCQ▾

Question

The given figure shows the color changes in the experimental tubes for acid-base titration. Identify the indicator used in the experiment by selecting the correct option.

Identify the indicator used in the experiment

Identify the Indicator Used in the Experiment

Choices

Choice (4)Response

a.

Methyl Red

b.

Methyl Orange

c.

Phenol Red

d.

Phenolphthalein

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