an answer to a problem or difficulty

a liquid mixture in which something has been dissolved

घोल

English Usage: The salt is a common solution in water.

Hindi Usage: नमक पानी में एक सामान्य घोल है।

one who exchanges or replaces

a device designed to transfer energy from one medium to another

अक्षेत्र में ऊर्जा का विनिमय करने वाला यंत्र

English Usage: The heat exchanger efficiently transfers heat between the two fluids.

Hindi Usage: हीट एक्सचेंजर दो तरल पदार्थों के बीच गर्मी को प्रभावी ढंग से विनिमय करता है।