In the given text, the blanks are numbered (i)—(iv). Select the best match for all the blanks. Steve was advised to keep his head ………. (i) before heading ……….. (ii) to bat; for, while he had a head ……….. (iii) batting, he could only do so with a cool head ………. (iv) his shoulders.
Bird : Nest :: Bee : __________
Select the correct option to complete the analogy.
A closed system is undergoing a reversible process 1–P–2 from state 1 to 2, as shown in the figure, where X and Y are thermodynamic properties. An irreversible process 2–Q–1 brings the system back from 2 to 1. The net change in entropy of the system and surroundings during the above-mentioned cycle are _______ respectively.
