9) In Electrolux refrigerator
Answer is:
ammonia evaporates in hydrogen
Related ISRO Technician-B MRAC Question Paper - 2016 (Set -1) with Answer Key
Answer is:
a gas will never liquefy
Explanation:
Gases can be converted to liquids by compressing the gas at a suitable temperature.
Gases become more difficult to liquefy as the temperature increases because the kinetic energies of the particles that make up the gas also increase.
The critical temperature of a substance is the temperature at and above which vapor of the substance cannot be liquefied, no matter how much pressure is applied.
Answer is:
Copper
Answer is: