Properties Of Solids And Liquids Question 536

Question: A beaker contains 200 gm of water. The heat capacity of the beaker is equal to that of 20 gm of water. The initial temperature of water in the beaker is20C . If 40 gm of hot water at 92C is poured in it, the final temperature (neglecting radiation loss) will be nearest to

Options:

A) 58C

B) 68C

C) 73C

D) 78C

Show Answer

Answer:

Correct Answer: B

Solution:

Heat lost by hot water = Heat gained by cold water in + Heat absorbed by beaker

440(92θ)=200×(θ20)+20×(θ20)

θ = 68C



जेईई के लिए मॉक टेस्ट

एनसीईआरटी अध्याय वीडियो समाधान

दोहरा फलक