(English Medium) ICSE Class 10 - CISCE Question Bank Solutions

A nucleus of stable phosphorus has 15 protons and 16 neutrons.

1. What is its atomic number and mass number?
2. The nucleus of radio phosphorous has one neutron more than the stable nucleus. What will be its atomic number and mass number?
3. What will be the atomic number and mass number of new nucleus formed by decay of a β-particle by the radio phosphorus in part (b)?

A nucleus \[\ce {^A_Z X}\] emits 2 α particles and 1 β particles to form a nucleus \[\ce {^222_85 R}\]. Find the atomic nucleus and mass number of X.

Complete the following nuclear change:

\[\ce {^a_x P -> Q +  ^0_-1β}\]

Complete the following nuclear change:

\[\ce{^238_92U -> ^234_90Th}\] + ______ + energy

Complete the following nuclear change:

\[\ce {^238_92 P  \text ->[α] Q \text ->[β] R \text ->[β] S}\]

Complete the following nuclear change:

\[\ce {^A_Z X \text ->[α] X_1 \text ->[γ] X_2 \text ->[2β] X_3}\]

Complete the following nuclear changes:

\[\ce {X \text ->[β] X_1 \text ->[α] X_2 \text ->[α] ^172_69 X_3}\]

A coil has a self-inductance of 0·05 Henry. Find the magnitude of the emf induced in it when the current flowing through it is changing at the rate of 100 As^-1.

What is an electromagnet?

Write five forms of energy.

What do you understand by mechanical energy?

What do you understand by the potential energy of the body?

What do you understand by the kinetic energy of the body?

Give three examples of bodies possessing kinetic energy.

How is kinetic energy possessed by a moving body measured?

Is it possible that a body may possess energy even when it is not in motion?

What kind of energy is possessed in a situation when?

A cocked up spring of air gun.

What kind of energy is possessed in a situation when?

A stone lying on the top of roof.

What kind of energy is possessed in a situation when?

A fish moving in the water.

What kind of energy is possessed in a situation when?

A horse running along a level road