Tamil Nadu Board of Secondary EducationSSLC (English Medium) Class 9th
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Question Bank Solutions for SSLC (English Medium) Class 9th - Tamil Nadu Board of Secondary Education - Science

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Science
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Choose the correct one.

[0.01] Measurement
Chapter: [0.01] Measurement
Concept: Measurements

Define measurement.

[0.01] Measurement
Chapter: [0.01] Measurement
Concept: Measurements

Match the Following.

Sr. No. List I   List II
1. Motion of a body covering equal distances in equal interval of time A.
2. Motion with non uniform acceleration B.
3. Constant retardation C.
4. Uniform acceleration D.
[0.02] Motion
Chapter: [0.02] Motion
Concept: Motion and Rest

What do you mean by uniform motion?

[0.02] Motion
Chapter: [0.02] Motion
Concept: Motion and Rest

In a pressure cooker, the food is cooked faster because ______.

[0.03] Fluids
Chapter: [0.03] Fluids
Concept: Thrust and Pressure

An empty plastic bottle closed with an airtight stopper is pushed down into a bucket filled with water. As the bottle is pushed down, there is an increasing force on the bottom. This is because

[0.03] Fluids
Chapter: [0.03] Fluids
Concept: Thrust and Pressure

A drinking straw works on the existence of ______.

[0.03] Fluids
Chapter: [0.03] Fluids
Concept: Thrust and Pressure

Match the following.

1. Density hρg
2. 1 gwt Milk
3. Pascal’s law `"Mass"/" Volume"`
4. Pressure exerted by a fluid Pressure
5. Lactometer 980 dyne
[0.03] Fluids
Chapter: [0.03] Fluids
Concept: Thrust and Pressure

Rubbing of comb with hair

[0.04] Electric Charge and Electric Current
Chapter: [0.04] Electric Charge and Electric Current
Concept: Electric Charge

Electric field lines ______ from positive charge and ______ in negative charge.

[0.04] Electric Charge and Electric Current
Chapter: [0.04] Electric Charge and Electric Current
Concept: Electric Charge

Match the following.

1. Electric charge a. ohm
2. Potential difference b. ampere
3. Electric field c. coulomb
4. Resistance d. newton per coulomb
5. Electric current e. volt
[0.04] Electric Charge and Electric Current
Chapter: [0.04] Electric Charge and Electric Current
Concept: Electric Charge

State whether true or false. If false, correct the statement.

Electrically neutral means it is either zero or equal positive and negative charges.

[0.04] Electric Charge and Electric Current
Chapter: [0.04] Electric Charge and Electric Current
Concept: Electric Charge

Electrons move from ______potential to______ potential.

[0.04] Electric Charge and Electric Current
Chapter: [0.04] Electric Charge and Electric Current
Concept: Electric Charge

On what factors does the electrostatic force between two charges depend?

[0.04] Electric Charge and Electric Current
Chapter: [0.04] Electric Charge and Electric Current
Concept: Electric Charge

Define electric field.

[0.04] Electric Charge and Electric Current
Chapter: [0.04] Electric Charge and Electric Current
Concept: Electric Charge

What are electric lines of force?

[0.04] Electric Charge and Electric Current
Chapter: [0.04] Electric Charge and Electric Current
Concept: Electric Charge

Exercise.

Rubbing a comb on hair makes the comb get – 0.4C. 

  1. Find which material has lost electron and which one gained it. 
  2. Find how many electrons are transferred in this process.
[0.04] Electric Charge and Electric Current
Chapter: [0.04] Electric Charge and Electric Current
Concept: Electric Charge

A ray of light passes from one medium to another medium. Refraction takes place when angle of incidence is ______.

[0.06] Light
Chapter: [0.06] Light
Concept: Light

When a beam of white light passes through a prism it gets ______.

[0.06] Light
Chapter: [0.06] Light
Concept: Light

State whether true or false. If false, correct the statement.

If a ray of light passes obliquely from one medium to another, it does not suffer any deviation.

[0.06] Light
Chapter: [0.06] Light
Concept: Light
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