Given below are two statements, one is labelled as Assertion (A) and the other as Reason (R). Assertion (A) : Relative humidity decreases with increasing air temperature. Reason (R) : Absolute humidity increases with increasing evaporation. Select the correct answer from the codes given below.

Given below are two statements, one is labelled as Assertion (A) and the other as Reason (R). Assertion (A): Evaporation of sweat from human skin dissipates body heat. Reason (R): High humidity on a…

Which of the following are exothermic processes ? i. Evaporation of water. ii. Dilution of an acid (H₂SO4). iii. Reaction of water with quick lime. iv. Sublimation of camphor (crystals).

Which of the following is a correct relationship between Fahrenheit (°F) and Celsius (°C) degrees ?

An ideal gas is taken around a closed cycle ABCA as shown in the p-V diagram below. The coordinates of the points are: A(V, p); B(3V, 4p); C(3V, p). What is the work done during one complete cycle?

Which one among the following has the least coefficient of thermal conductivity?