HSC Science (General) 12th Standard Board Exam - Maharashtra State Board Important Questions

Which of the following is correct, when the energy is transferred to a system from its environment?

Which of the following system freely allows the exchange of energy and matter with its environment? 

For work done to be reversible, the process should be ______ 

The second law of thermodynamics deals with the transfer of ______.

When two objects are said to be in thermal equilibrium?

What is the energy associated with the random, disordered motion of the molecules of a system called as?

A group of objects that can form a unit which may have the ability to exchange energy with its surrounding is called what? 

Draw a p-V diagram of the reversible process. 

Draw a p-V diagram showing negative work with varying pressure. 

State the assumptions made for thermodynamic processes.

Differentiate between the reversible and irreversible processes.

An ideal gas of volume 2 L is adiabatically compressed to (1/10)^th of its initial volume. Its initial pressure is 1.01 x 105 Pa, calculate the final pressure. (Given 𝛾 = 1.4) 

Explain graphically (i) positive work with varying pressure, (ii) negative work with varying pressure, and (iii) positive work at constant pressure. 

One gram of water (1 cm³) becomes 1671 cm³ of steam at a pressure of 1 atm. The latent heat of vaporization at this pressure is 2256 J/g. Calculate the external work and the increase in internal energy. 

A cylinder containing one gram molecule of the gas was compressed adiabatically until its temperature rose from 27°C to 97°C. Calculate the work done and heat produced in the gas (𝛾 = 1.5).

Explain the thermodynamics of the isochoric process.  

Give any two types of a thermodynamic process.

What is mechanical equilibrium?

A particle performing Linear S.H.M. has a maximum velocity 25 cm/sand maximum acceleration 100 cm/s². Find the period of oscillations.

Write statement of second law of thermodynamics.