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Calorimetry Physics - Calorimetry

UP Board (UPMSP) - STD 11 Science - Physics (UPMSP - English Medium). 41 questions in this chapter.

Question types

Calorimetry question types

41 questions across 5 question groups — pick any mix to generate a Physics paper with step-by-step answer keys.

41
Questions
5
Question groups
5
Question types
Sample Questions

Calorimetry questions

One sample from each question group in this chapter. Select any group above to see the full set with answer keys.

Q 1M.C.Q (1 Marks)1 Mark
The temperature of an object is observed to rise in a period. In this period:
  1. Heat is certainly supplied to it.
  2. Heat is certainly not supplied to it.
  3. Heat may have been supplied to it.
  4. Work may have been done on it.
  • A
    Only $A$
  • B
    $A$ and $B$
  • C
    $B$ and $C$
  • ✓
    $C$ and $D$

Answer: D.

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Q 2M.C.Q (1 Marks)1 Mark
The ratio of specific heat capacity to molar heat capacity of a body:
  • A
    Is a universal constant.
  • B
    Depends on the mass of the body.
  • ✓
    Depends on the molecular weight of the body.
  • D
    Is dimensionless.

Answer: C.

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Q 3M.C.Q (1 Marks)1 Mark
The 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.
  • A
    $A$ and $B$
  • B
    $B$ and $C$
  • C
    Only $C$
  • ✓
    $C$ and $D$

Answer: D.

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Q 4M.C.Q (1 Marks)1 Mark
When a hot liquid is mixed with a cold liquid, the temperature of the mixture:
  • A
    First decreases then becomes constant.
  • B
    First increases then becomes constant.
  • C
    Continuously increases.
  • ✓
    Is undefined for some time and then becomes nearly constant.

Answer: D.

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Q 5M.C.Q (1 Marks)1 Mark
Which of the following pairs represent units of the same physical quantity?
  • A
    Kelvin and joule.
  • B
    Kelvin and calorie.
  • C
    Newton and calorie.
  • ✓
    Joule and calorie.

Answer: D.

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Q 71 Marks Question1 Mark
A block of mass 100g slides on a rough horizontal surface. If the speed of the block decreases from $10ms^{-1}$ to $5ms^{-1}$, find the thermal energy developed in the process.
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Q 81 Marks Question1 Mark
Four $2 \mathrm{~cm} \times 2 \mathrm{~cm} \times 2 \mathrm{~cm}$ cubes of ice are taken out from a refrigerator and are put in 200 ml of a drink at $10^{\circ} \mathrm{C}$.
a. Find the temperature of the drink when thermal equilibrium is attained in it.
b. If the ice cubes do not melt completely, find the amount melted. Assume that no heat is lost to the outside of the drink and that the container has negligible heat capacity. Density of ice $=900 \mathrm{~kg}-\mathrm{m}^{-3}$, density of the drink $=1000 \mathrm{~kg}-\mathrm{m}^{-3}$, specific heat capacity of the drink $=4200 \mathrm{Jkg}^{-1}-\mathrm{K}^{-1}$, latent heat of fusion of ice $=3.4 \times 10^5 \mathrm{~J}-\mathrm{kg}^{-}$ 1.
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Q 101 Marks Question1 Mark
A van of mass 1500 kg travelling at a speed of $54 \mathrm{kmh}^{-1}$ is stopped in 10 s . Assuming that all the mechanical energy lost appears as thermal energy in the brake mechanism, find the average rate of production of thermal energy is $\mathrm{cals}^{-1}$.
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Q 145 Marks Questions5 Marks
A piece of iron of mass $100g$ is kept inside a furnace for a long time and then put in a calorimeter of water equivalent $10g$ containing $240g$ of water at $20°C$. The mixture attains and equilibrium temperature of $60°C$. Find the temperature of the furnace. Specific heat capacity of iron = $470J kg^{-1 \circ} C^{-1}$.
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Q 155 Marks Questions5 Marks
The temperatures of equal masses of three different liquids $A , B$ and C are $12^{\circ} C , 19^{\circ} C$ and $28^{\circ} C$ respectively. The temperature when A and B are mixed is $16^{\circ} C$, and when B and C are mixed, it is $23^{\circ} C$. What will be the temperature when A and C are mixed?
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Q 165 Marks Questions5 Marks
An aluminium vessel of mass 0.5kg contains 0.2kg of water at $20^\circ C$. A block of iron of mass 0.2kg at $100^\circ C$ is gently put into the water. Find the equilibrium temperature of the mixture. Specific heat capacities of aluminium, iron and water are $910\ J\ kg^{- 1}-K^{- 1}, 470\ J\ kg^{-1}-K^{-1} $ and $4200\ J\ kg^{-1}-K^{-1} $ respectively.
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Q 18Case study (4 Marks)4 Marks
Indian style of cooling drinking water is to keep it in a pitcher having porous walls. Water comes to the outer surface very slowly and evaporates. Most of energy needed for evaporation is taken from the water itself and the water is cooled down. Assume that a pitcher contains 10kg of water and 0.2g of water comes out per second. Assuming no backward heat transfer from the atmosphere to the water, calculate the time in which the temperature decrease by 5°C. Specific heat capacity of water $= 4200\ J\ kg^{-1} \ ^\circ C^{-1} $ and latent heat of vaporization of water $= 2.27 \times 10^6 J kg^{-1}.$
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