SSLC (English Medium) कक्षा १० - Tamil Nadu Board of Secondary Education Question Bank Solutions for Science

The existence of two sets of teeth in the life of an animal is called ______ dentition.

Diastema is a gap between premolar and molar teeth in rabbits.

How is diastema formed in rabbits?

How is the digestive system of rabbits suited for the herbivorous mode of feeding?

According to Charles’s law, at constant pressure, the temperature is inversely proportional to volume.

Which of the following is correct?

Mark the correct choice

1. Assertion: Electric appliances with a metallic body have three wire connections.
2. Reason: Three-pin connections reduce the heating of the connecting wires.

An electric iron consumes energy at the rate of 420 W when heating is at the maximum rate and 180 W when heating is at the minimum rate. The applied voltage is 220 V. What is the current in each case?

In the nuclear reaction ₆X¹² α decay _ZY^A, the value of A & Z.

Kamini reactor is located at ______.

Which of the following is/are correct?

1. Chain reaction takes place in a nuclear reactor and an atomic bomb.
2. The chain reaction in a nuclear reactor is controlled
3. The chain reaction in a nuclear reactor is not controlled
4. No chain reaction takes place in an atom bomb

If a moderator is not present, then a nuclear reactor will behave as an atom bomb.

Match: II

Arrange the following in the chronological order of discovery

Nuclear reactor, radioactivity, artificial radioactivity, discovery of radium.

When and where was the first nuclear reactor built?

Give the function of control rods in a nuclear reactor.

In Japan, some of the new born children are having congenital diseases. Why?

Explain the process of controlled and uncontrolled chain reactions.

What is a nuclear reactor? Explain its essential parts with their functions.

Mass number of a radioactive element is 232 and its atomic number is 90. When this element undergoes certain nuclear reactions, it transforms into an isotope of lead with a mass number 208 and an atomic number 82. Determine the number of alpha and beta decay that can occur.