Question 1 :
Between a cold and a hot body which body has higher energy?

Question 4 :
In which factor, the quantity of heat energy absorbed to increase the temperature of a body depends?

Question 7 :
Consider you contact two bodies (A, B) but after that you observe that there is no flow of heat between two bodies. From this incident you can say that

Question 9 :
The total internal energy of all molecules of a substance is called

Question 11 :
1.6 kg of boiling water at {tex} 100^{\circ} \mathrm{C} {/tex} is poured into {tex} 2 \mathrm{~kg} {/tex} of crushed ice at {tex} \left[336 \times 10^{3} \mathrm{~J} \mathrm{~kg}^{-}\right. {/tex} {tex} \left.{ }^{1}\right] 0^{\circ} \mathrm{C}, {/tex} such that final temperature recorded is {tex} 0^{\circ} \mathrm{C} {/tex}. Calculate the specific heat of ice.

Question 13 :
Land and sea breezes are formed in coastal regions because :

Question 14 :
An electric heater of power {tex} 600 \mathrm{~W} {/tex} raises the temperature of {tex} 4.0 \mathrm{~kg} {/tex} of a liquid from {tex} 10^{\circ} \mathrm{C} {/tex} to {tex} 15^{\circ} \mathrm{C} {/tex} in {tex} 100 \mathrm{~s} {/tex}. Calculate the heat capacity of {tex} 4.0 \mathrm{~kg} {/tex} of liquid.

Question 15 :
The sepcific latent heat of fusion of ice in SI system is :

Question 17 :
Does the temperature of a body depends on mass of the body?

Question 21 :
{tex} 0.5 \mathrm{~kg} {/tex} of lemon squash at {tex} 30^{\circ} \mathrm{C} {/tex} is placed in a refrigerator which can remove heat at an average rate of {tex} 30 \mathrm{~J} \mathrm{~s}^{-1} {/tex}. How long will it take to cool the lemon squash to {tex} 5^{\circ} \mathrm{C} {/tex} ? Specific heat capacity of squash {tex} =4200 \mathrm{~J} \mathrm{~kg}^{-1} \mathrm{~K}^{-1} {/tex}

Question 23 :
Calculate the total amount of heat energy required to convert {tex} 100 \mathrm{~g} {/tex} of ice at {tex} -10^{\circ} \mathrm{C} {/tex} completely into water at {tex} 100^{\circ} \mathrm{C} {/tex}. Specific heat capacity of ice {tex} 2.1 \mathrm{~J} \mathrm{~g}^{-1} \mathrm{~K}^{-1} {/tex}, specific heat capacity of water is {tex} 4.2 \mathrm{~J} \mathrm{~g}^{-1} \mathrm{~K}^{-1}, {/tex} specific latent heat of fusion of ice {tex} =336 \mathrm{Jg}^{-1} {/tex}

Question 24 :
The specific heat capacity of water in S.I. system is :

Question 26 :
One calorie is the heat energy required to raise the temperature of 1 g of water from ______ to _____

Question 29 :
The amount of heat energy required to melt a given mass of a substance at its melting point without any rise in temperature is called :

Question 30 :
1.0 kg of water is contained in a {tex} 1.25 \mathrm{~kW} {/tex} kettle. Calculate the time taken for the temperature of water to rise from {tex} 25^{\circ} \mathrm{C} {/tex} to its boiling point {tex} 100^{\circ} \mathrm{C} {/tex}. Specific heat capacity of water {tex} =4.2 \mathrm{~J} \mathrm{~g}^{-1} \mathrm{~K}^{-1} {/tex}.

Question 40 :
The energy of electron increases the number ‘n’ of any shell. Isa it true or false?

Question 41 :
The size of nucleus of an atom is in the order of

Question 44 :
The temperature required for the process of nuclear fusion is nearly:

Question 46 :
In – emission from a radioactive substance, an electron is ejected. This electron comes from:

Question 48 :
In fission of one uranium – 235 nucleus, the loss in mass is 0.2 a.m.u. Calculate the energy released.

Question 49 :
During β-emission an electron is ejected from the atom of radioactive substance. The electron is ejected from the:

Question 50 :
For any atom which number is determined the position of the atom in the periodic table?

Question 58 :
The atoms of same element having same atomic number, but different atomic masses are called :

Question 60 :
The radiation suffering the maximum deflection in a magnetic field is: