Thermal Properties of Matter MCQ
Test your knowledge with important Thermal Properties of Matter MCQ and their applications. These MCQs are beneficial for competitive exams too. Explore 30+ more Thermal Properties of Matter MCQs on Bissoy. Bissoy App
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Two spheres, A & B, are made up of the same material. The radius of A is twice that of B, while the temperature of A is half that of B. What is their ratio of energy emitted per unit time (EA : EB)?
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If we hold a metal rod from one end and dip the other in a source of fire, what will happen to the temperature of the rod at steady state?
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The sun emits light having maximum intensity at a wavelength 468nm. Assume emissivity of sun is 1. Calculate its surface temperature. σ= 5.67*10-8W/m2K4.
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What is the net amount of energy per unit time being received by a body having a temperature of 40 °C in a surrounding of 60°C? (The surface area of body = 2m2, σ = 5.67*10-8W/ m2K4 & emissivity of 0.4).
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The electromagnetic energy emitted by a perfect radiator corresponding to a temperature T and surface area A is?
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What is the value of Wien’s constant?
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At a given temperature a body emits energy of a single wavelength corresponding to that temperature. True or False?
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Select the correct statement.
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What is the expression for heat current? Q is heat, t is time, T is temperature.
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A steel and a copper bar are joined end to end. The area of the steel bar is half the area of the copper bar. Their lengths are equal to 10cm each. Temperature of free ends of steel & copper rod are 0°C & 100°C respectively. KS = 50 J/smK & KC =384 J/smK. Calculate equivalent thermal conductivity of the combined bar.
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Quantitatively heat conduction can be described as?
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When water is kept in a very hot pan, the entire water heats up. Which mode of heat transfer is responsible for this?
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Select the correct statement for melting of any substance.
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Condensation temperature is the same as evaporation temperature. True or False?
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If 5g of a solid requires 30cal of heat to change into liquid at the same temperature, calculate the latent heat of fusion in cal/g.
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Getting burnt by steam is less dangerous than boiling water. True or False?
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Select the correct statement
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What happens to the boiling point of water in a container when the container is completely closed by a lid?
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What is regelation?
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Melting point depends on pressure. True or False?
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Change of phase occurs at a constant temperature, which implies that even on addition of heat to a substance temperature remains constant. True or False?
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Same amount of heat is added to two substances of same mass having specific heat capacities s1 & s2 such that s1 > s2. Select the correct statement.
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What should be the temperature of 1g of ice, so that when it’s added to 9g of water, lowers the temperature of water by 10°C? Sw = 1cal/ g°C, Sice = 0.5cal/ g°C, Lfus= 80cal/g.
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30g water at 30°C is mixed with 1g of steam at 100℃. Calculate the final temperature of the mixture. Sw = 1cal/ g°C, Lvap= 540cal/g.
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The temperature of 50g of water has to be risen from 15°C to 85°C by using steam at 120°C. What is the amount of steam, in gms, required for the same? Sw= 1cal/ g°C, Lvap = 540cal/g, Ssteam =0.48cal/g°C.
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What is the definition of 1 calorie?
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What is the principle of a calorimeter?
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A calorimeter does not involve measurement of temperature. True or False?
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CV of a gas is 8 calK-1mol-1. Find CP/CV. Assume R = 2 calK-1mol-1.
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A closed container contains 0.6m3 of neon gas at 200K temperature and 1.3*105Pa. Find the rise in temperature when 8360 J of heat is supplied to it. The molar heat capacity of neon at constant volume is 3.2calK-1mol-1. Assume the container doesn’t expand on heating.