NTSE SAT Physics Heat Energy and Calorimeter MCQs

Question: Two blocks of iron A and B, A being four times heavier than B, are at 45°C. The ratio of heat content of A and B is :

• a) 1 : 1
• b) 4 : 1
• c) 2 : 1
• d) 1 : 4

Answer: 1 : 1

Question: Bunty thought that if he mixed 440 gm of ice at 00C with 540 gm of water at 800C. Then what would remain after sometime :        

• a) Only ice
• b) Only water
• c) Ice and water in same amount
• d) Ice and water will vaporizer

Answer: Only water

Question: If anil mixed 440 gm of ice at 00\0C with 440 gm of water at 800C, then final temperature of the mixture will be       

• a) 00C 
• b) 400C
• c) 700C
• d) 800C

Answer: 00C 

Question: 80 g of water at 300C is poured on a large block of ice at 00C. The mass of ice that melts is :     

• a) 30 g
• b) 80 g
• c) 150 g
• d) 1600 g

Answer: 30 g

Question: Liquids A and B are at 300C and 200C. When mixed in equal masses, the temperature of the mixture is found to be 260C. Their specific heats are in the ratio of :        

• a) 1 : 1
• b) 2 : 3
• c) 4 : 3
• d) 3 : 2

Answer: 3 : 2

Question: A piece of ice at 0°C is added to a vessel containing water at 0°C, then :

• a) All of the ice will melt
• b) Some ice will melt
• c) Ice will not melt
• d) Temperature will decrease further

Answer: Ice will not melt

Question: In first law of thermodynamics conserved quantity is :

• a) Energy
• b) Momentum
• c) Charge
• d) Temperature

Answer: Energy

Question: The quantity of heat required to raise the temperature of 250 g of water from 10°C to 50°C is :

• a) 10,000 cal
• b) 1000 cal
• c) 100 cal
• d) Zero

Answer: 10,000 cal

Question: Which of the following produces more severe burns ?

• a) Hot air
• b) Sun rays
• c) Boiling water
• d) Steam

Answer: Steam

Question: If anil mixed 440 gm of ice at 0°C with 440 gm of water at 80°C, then final temperature of the mixture will be

• a) 00C 
• b) 400C  
• c) 700C
• d) 800C

Answer: 00C