200 g of water at 20C and 300 g of water at 70C are mixed in a calorimeter of negligible heat capacity. Assume no loss of heat. The final temperature is: 
1. 40C
2. 50C
3. 60C
4. 45C
Subtopic:  Calorimetry |
 85%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

Two liquids flow through a heat exchanger and exchange heat energy.
The first liquid has a mass flow rate (dmdt)=r1, and its temperature rises by Δθ1. For the second liquid, the flow rate (dmdt)=r2, and the temperature fall is Δθ2. The ratio of their specific heat capacities is:
1. Δθ1Δθ2 2. r1r2
3. r2Δθ2r1Δθ1 4. r2Δθ1r1Δθ2
Subtopic:  Calorimetry |
 74%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

The specific heat capacity of a body depends on:
 
1. the heat given
2. the temperature raised
3. the mass of the body
4. the material of the body
Subtopic:  Calorimetry |
 75%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

advertisementadvertisement

When 0.15 kg of ice at 0C is mixed with 0.30 kg of water at 50C in a container, the resulting temperature is 6.7C.
The heat of fusion of ice is: (Swater=4186 J kg–1 K–1)
1. 3.43×104 Jkg–1
2. 3.34×104 Jkg–1
3. 3.34×105 Jkg–1
4. 4.34×105 Jkg–1

Subtopic:  Calorimetry |
 58%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
Links
To view explanation, please take trial in the course.
NEET 2025 - Target Batch