NEET (2024 Updated)-National Eligibility cum Entrance Test (Medical) Chemistry Coaching Programs
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NCERT Class VII Science Solutions: Chapter 4 β Heat Part 1
Multiple Choice Questions
Question 1:
A marble tile would feel cold as compared to a wooden tile on a winter morning, because the marble tile
- Is a better conductor of heat than the wooden tile.
- Is polished while wooden tile is not polished.
- Reflects more heat than wooden tile.
- Is a poor conductor of heat than the wooden tile.
Answer: A
Question 2:
A beggar wrapped himself with a few layers of newspaper on a cold winter night. This helped him to keep himself warm because
- Friction between the layers of newspaper produces heat.
- Air trapped between the layers of newspaper is a bad conductor of heat.
- Newspaper is a conductor of heat.
- Newspaper is at a higher temperature than the temperature of the surrounding.
Answer: B
Question 3:
Paheli and Boojho measured their body temperature. Paheli found herΥs to be and Boojho recorded . Which of the following statement is true?
- Paheli has a higher body temperature than Boojho.
- Paheli has a lower body temperature than Boojho.
- Both have normal body temperature.
- Both are suffering from fever.
Answer: C
Question 4:
Boojho has three thermometers as shown in Figure. He wants to measure the temperature of his body and that of boiling water. Which thermometer (s) should he choose?
- Thermometer (i) or (iii) for measuring body temperature and (ii) for measuring the temperature of boiling water.
- Thermometer (i) for measuring temperature of both.
- Thermometer (ii) for measuring temperature of both.
- Thermometer (iii) for measuring temperature of both.
Answer: A