Q. Liquids and gases transfer heat mainly by __________.

तरल पदार्थ और गैसें मुख्य रूप से __________ द्वारा ऊष्मा स्थानांतरित करते हैं।

A
Conduction
प्रवाहकत्त्व
B
Convection
कंवेक्शन
C
Radiation
विकिरण
D
Absorption
अवशोषण

Explanation

In liquids and gases, convection is the main method of heat transfer. It involves the bulk movement of particles carrying heat from one place to another.
For example, warm air rises and cooler air sinks, creating convection currents.

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