MCQ Questions for Class 7 Science Chapter 4 : NCERT solutions for Class 7 Science MCQs Chapter 4 “Heat” with Answers PDF Free Download prepared here according to the latest CBSE syllabus and NCERT curriculum. Class 7 Science MCQs Multiple Choice Questions for all Chapter.
MCQ Questions for Class 7 Science Chapter 4 Heat with answer pdf
Q1. Which of the following is a insulator
(a) Graphite
(b) Air
(c) Aluminium rod
(d) Copper rod
Answer: (b) Air
Q2. Which of the following is a good conductor of heat?
(a) Iron
(b) Steel
(c) Aluminium
(d) All of these
Answer: (d) All of these
Q3. Which one of the following is a reliable measure?
(a) Hotness
(b) Coldness
(c) Temperature
(d) None of these
Answer: (c) Temperature
Q4. Heat in liquid travels from the:
(a) bottom to top
(b) top to bottom
(c) right to left
(d) left to right
Answer: (a) bottom to top
Q5. Which of the following is the best conductor of heat?
(a) Water vapour
(b) Metals
(c) Alcohol
(d) Water
Answer: (b) Metals
Q6. A device used to measure the temperature is
(a) transistor
(b) thermometer
(c) mercury
(d) none of these
Answer: (b) thermometer
Q7. Name the device which is used to measure the hotness or coldness of an object.
(a) Picometer
(b) Barometer
(c) Manometer
(d) Thermometer
Answer: (d) Thermometer
Q8. Heat transferred into solids by:
(a) conduction
(b) convection
(c) radiation
(d) insulators
Answer: (a) conduction
Q9. Heat of sun reaches to earth by
(a) Radiation
(b) Conduction
(c) Through air
(d) Convection
Answer: (a) Radiation
Q10. Which of the following thermometers has a kink?
(a) Laboratory thermometer
(b) Clinical thermometer
(c) Both (a) and (b)
(d) Digital thermometer
Answer: (b) Clinical thermometer
Q11. Which one is filled in the bulb of a thermometer?
(a) Mercury
(b) Lead
(c) Copper
(d) Silver
Answer: (a) Mercury
Q12. The substances which conduct heat easily are called:
(a) convection
(b) radiation
(c) conductors
(d) none of these
Answer: (c) conductors
Q13. During the night
(a) Sea water heats up
(b) Land heats up
(c) Land cools more quickly than the sea
(d) Sea cools quickly than the land
Answer: (c) Land cools more quickly than the sea
Q14. What is the range of the temperature reading of a clinical thermometer?
(a) 35°C – 42°C
(b) -10°C – 110°C
(c) 0°C – 100°C
(d) 32°C – 42°C
Answer: (a) 35°C – 42°C
Q15. What is the normal temperature of a healthy person?
(a) 37°C
(b) 37°F
(c) 37 K
(d) None of these
Answer: (a) 37°C
Q16. In which process heat is transferred from hotter end to colder end is known as:
(a) conduction
(b) convection
(c) radiation
(d) none of these
Answer: (a) conduction
Q17. Mercury is generally used in thermometer because it has a
(a) high fluidity
(b) high density
(c) high conductivity
(d) high specific heat
Answer: (c) high conductivity
Q18. Which of the following thermometer contains mercury?
(a) Clinical thermometer
(b) Laboratory thermometer
(c) Both (a) and (b)
(d) None of these
Answer: (c) Both (a) and (b)
Q19. Heat always flows
(a) from a colder object to a hotter object
(b) from a hotter object to a colder object
(c) in both the directions
(d) heat never flows from one object to other
Answer: (b) from a hotter object to a colder object
Q20. Which currents are formed in all liquid on heating ?
(a) radiation current
(b) conduction current
(c) convection current
(d) none of these
Answer: (c) convection current
