A gas contained in a cylinder surrounded by a thick layer of insulating material is quickly compressed. Has work been done?

A gas contained in a cylinder surrounded by a thick layer of insulating material is quickly compressed. Has there been a transfer of heat?

A mixture of fuel and oxygen is burned in a constant- volume chamber surrounded by a water bath. It was noticed that the temperature of water is increased during the process. Treating the mixture of fuel and oxygen as the system. Has work been done?

A gas enclosed in a cylinder is expanded to double its initial volume at a constant pressure of one atmosphere . How much work is done in this process ?

Same quantity of ice is filled in each of the two metal containers P and Q having the same size, shape and wall thickness but made of different materials. The containers are kept in identical surroundings. The ice in P melts completely in time t_1 , whereas that Q in takes a time t_2 . The ratio of thermal conductivities of the materials of P and Q is

An ideal gasin a cylinder is compressed adiabatically to one-third its original volume. During the processif 45 J of work is done on the gas by the compressing agent, what is the change in internal energy?

Study the pictures given below and answer the questions: In which of the pictures above has work been done?

One mole of an ideal gas is initially kept in a cylinder with a movable frictionless and massless piston at pressure of 0.1 mPa and temperature 27^@C . It is then expanded till its volume is doubled. How much work is done if the expansion is isobaric ?

A cylinder fitted with a piston contains 0.2 moles of air at temperature 27^(@) . The piston is pushed so slowly that the air within the cylinder remains in thermal equilibrium with the surroundings. Find the approximate work done by the system if the final volume is twice the initial volume