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Tamil Nadu Board of Secondary EducationSSLC (English Medium) Class 7

SSLC (English Medium) Class 7 - Tamil Nadu Board of Secondary Education Question Bank Solutions for Science

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Higher Order Thinking question

Go to a veterinary doctor (a doctor who treats animals). Discuss and find out the normal temperature of domestic animals and birds.

[2.1] Heat and Temperature
Chapter: [2.1] Heat and Temperature
Concept: undefined >> undefined

One unit of coulomb is charge of approximately ______ protons or electrons.

[2.2] Electricity
Chapter: [2.2] Electricity
Concept: undefined >> undefined

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Match the following

1. Cell used to open or close a circuit
2. Switch safety device used in electric circuit
3. Circuit A complete path for the flow of an electric current
4. Miniature circuit Breaker Reset by hand, circuit becomes complete once again
5. Fuse A device which converts chemical energy into electrical energy
[2.2] Electricity
Chapter: [2.2] Electricity
Concept: undefined >> undefined

Length: metre scale: : Current: ______

[2.2] Electricity
Chapter: [2.2] Electricity
Concept: undefined >> undefined

Explain the construction and working of an Telephone.

[2.2] Electricity
Chapter: [2.2] Electricity
Concept: undefined >> undefined

How can a change occur in a substance?

[2.3] Changes Around Us
Chapter: [2.3] Changes Around Us
Concept: undefined >> undefined

Picture based question

Observe the picture and list down the changes that are accompanied in the picture.

  1. ______.
  2. ______.
  3. ______.
[2.3] Changes Around Us
Chapter: [2.3] Changes Around Us
Concept: undefined >> undefined

Observe the picture containing a kettle and note that it has salt water in it and answer the following questions:

  1. What is name of the process that is done to the kettle? 
  2. What will happen to the content of the kettle?
  3. What kind of change is occurring on the cold surface of the metal plate? 
  4. What can you say about the quality of water that is obtained in the beaker?
[2.3] Changes Around Us
Chapter: [2.3] Changes Around Us
Concept: undefined >> undefined

Tux paint software is used to ______.

[2.6] Digital Painting
Chapter: [2.6] Digital Painting
Concept: undefined >> undefined

Which toolbar is used for drawing and editing controls in tux paint software?

[2.6] Digital Painting
Chapter: [2.6] Digital Painting
Concept: undefined >> undefined

What is the shortcut key for undo option?

[2.6] Digital Painting
Chapter: [2.6] Digital Painting
Concept: undefined >> undefined

What is Tux Paint ?

[2.6] Digital Painting
Chapter: [2.6] Digital Painting
Concept: undefined >> undefined

What is the use of Text Tool ?

[2.6] Digital Painting
Chapter: [2.6] Digital Painting
Concept: undefined >> undefined

What is the Shortcut key for Save option?

[2.6] Digital Painting
Chapter: [2.6] Digital Painting
Concept: undefined >> undefined

______ and ______ planets never appear in the mid-night sky.

[3.2] Universe and Space
Chapter: [3.2] Universe and Space
Concept: undefined >> undefined

A______is a long chain made up of many repeated small units called monomers.

[3.3] Polymer Chemistry
Chapter: [3.3] Polymer Chemistry
Concept: undefined >> undefined

Arrange in Correct Sequence

1. Mix water, starch, vinegar and glycerin in a cooking pot.
2. Let the article cool for 24 hours before we use it.
3. Shape material to form a cup or bowl.
4. Continuously mix on medium heat until the liquid turns clear.
5. When the liquid begins to bubble it is ready to be taken off the stove.
6. Spread the gel onto aluminium foil and cool.
[3.3] Polymer Chemistry
Chapter: [3.3] Polymer Chemistry
Concept: undefined >> undefined

Assertion and Reason

A: Vegetable peels buried in the soil disappear within two weeks.

R: Vegetable peels are compostable.

[3.3] Polymer Chemistry
Chapter: [3.3] Polymer Chemistry
Concept: undefined >> undefined

What is the chemical name of the polymers that make up cotton?

[3.3] Polymer Chemistry
Chapter: [3.3] Polymer Chemistry
Concept: undefined >> undefined

Fill in the blanks

[3.3] Polymer Chemistry
Chapter: [3.3] Polymer Chemistry
Concept: undefined >> undefined
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