250 Gm Of Water And Equal Volume Of Alcohol Of Mass 200 Gm Are Replaced Successively In The Same Calorimeter And Cool From 60oC To 55oC In 130 Seconds And 67 Seconds Respectively. If The Water Equivalent Of The Calorimeter Is 10 Gm, Then The Specific Heat Of Alcohol In Cal/gm-oC is:

Why Kaysons ?

Video lectures

Access over 500+ hours of video lectures 24*7, covering complete syllabus for JEE preparation.

Online Support

Practice over 30000+ questions starting from basic level to JEE advance level.

Live Doubt Clearing Session

Ask your doubts live everyday Join our live doubt clearing session conducted by our experts.

National Mock Tests

Give tests to analyze your progress and evaluate where you stand in terms of your JEE preparation.

Organized Learning

Proper planning to complete syllabus is the key to get a decent rank in JEE.

Test Series/Daily assignments

Give tests to analyze your progress and evaluate where you stand in terms of your JEE preparation.

SPEAK TO COUNSELLOR ? CLICK HERE

Download JEE Question paper & Solution Download JEE Important questions Download Complete syllabus of Maths, Physics, Chemistry

Question

250 gm of water and equal volume of alcohol of mass 200 gm are replaced successively in the same calorimeter and cool from 60^oC to 55^oC in 130 seconds and 67 seconds respectively. If the water equivalent of the calorimeter is 10 gm, then the specific heat of alcohol in cal/gm-^oC is:

1.30
0.67
0.62
0.985

medium

Solution

Correct option is

0.62

Mass of water = 250 gm

Mass of alcohol = 200 gm

Water equivalent of calorimeter, W = 10 gm

Fall of temperature = 60 – 55 = 5^oC

Time taken by water to cool = 130 sec.

Time taken by alcohol to cool = 67 sec.

Heat lost by water and colorimeter

Heat lost by alcohol and calorimeter = (200s + 10)5

Rates of loss of heat in the two cases are equal

cal/gm-^oC

Download JEE Question paper & Solution Download JEE Important questions Download Complete syllabus of Maths, Physics, Chemistry

SIMILAR QUESTIONS

Q1

In a resistance thermometer the resistances at 0^oC and 100^oC are 6.74 and 7.74 ohm respectively. The temperature corresponding to 6.53 ohm resistance is:

easy View solution

Q2

Which of the following has the highest specific heat?

easy View solution

Q3

Which of the following has the highest specific heat?

easy View solution

Q4

A liquid is being converted into vapours at its bp; the specific heat of liquid at this temperature will be:

easy View solution

Q5

Specific heat of a gas undergoing adiabatic change is:

easy View solution

Q6

Which of the following produces more servere burns?

easy View solution

Q7

A body cools from 91^oC to 89^oC in 5 minutes when the room temperature is 20^oC. Then it will cool from 71^oC to 69^oC in:

diffcult View solution

Q8

Three liquids with masses m₁, m₂, m₃ are thoroughly mixed. If their specific heats are s₁, s₂, s₃ and their temperature θ₁, θ₂, θ₃ respectively, then the temperature of the mixture is:

easy View solution

Q9

80 gm of water at 30^oC is poured on a large block of ice at 0^oC. The mass of ice that melts is:

easy View solution

Q10

The sprinkling of water reduce the temperature of a closed room because:

easy View solution