SSLC (English Medium) Class 10 - Tamil Nadu Board of Secondary Education Question Bank Solutions

Which organ acts as a suction pump in leech?

List out the parasitic adaptations in the leech.

Assertion & Reasoning

1. Assertion: The sum of the clockwise moments is equal to the sum of the anticlockwise moments.
2. Reason: The principle of conservation of momentum is valid if the external force on the system is zero.

For a given heat in liquid, the apparent expansion is more than that of real expansion.

Explain the experiment of measuring the real and apparent expansion of a liquid with a neat diagram.

With the help of a circuit diagram derive the formula for the resultant resistance of three resistances connected:

1. in series and
2. in parallel

What is the minimum distance needed for an echo?

A man is standing between two vertical walls 680 m apart. He claps his hands and hears two distinct echoes after 0.9 seconds and 1.1 seconds respectively. What is the speed of sound in the air?

What is an echo?

State two conditions necessary for hearing an echo.

What are the medical applications of echo?

How can you calculate the speed of sound using echo?

When sound is reflected from a distant object, an echo is produced. Let the distance between the reflecting surface and the source of sound remain the same. Do you hear an echo sound on a hotter day? Justify your answer.

________ has the greatest penetration power.

_ZY^A → _Z+1Y^A + X ; Then, X is _____

_ZX^A → _ZY^A This reaction is possible in ________ decay.

Arrange in descending order, on the basis of their penetration power

Alpha rays, beta rays, gamma rays, cosmic rays

Deflected by electric field : α ray, Null Deflection : ______

Write the name of the electromagnetic radiation which is emitted during a natural radioactivity.

Cancer cells are more easily damaged by radiations than normal cells because they are ______.