Which of the following statements is CORRECT for Joule Thomson effect in liquefaction of permanent gases ?

Which of the following statements is CORRECT for Joule Thomson effect

1.	Which of the following statements is CORRECT for Joule Thomson effect in liquefaction of permanent gases ?
Answer» When a work of expansion is DONE at the cost of internal energy, the temperatureof GAS DROPS further. When a work of expansion is done at the cost of internal energy, the temperature of gas INCREASES further. When a work of COMPRESSION is done at the cost of internal energy, the temperature of gas drops further. When a work of compression is done at the cost of internal energy, the temperature of gas increases further. Answer :A