MCQ Questions for Class 9 Science Chapter 1 Matter in Our Surroundings with Answers

1. The boiling point of water at sea level is

2. Which of the following statement is correct?

3. Dry ice is

4.  Which one of the following statements is not true?

5. Which of the following statement is not true regarding the characteristic of matter?

6. When a gas jar full of air is placed upside down on a gas jar full of bromine vapours, the red-brown vapours of bromine from the lower jar go upward into the jar containing air. In this experiment:

7. During summer, water kept in an earthen pot becomes cool because of the phenomenon of

8.  Which of the following cannot be considered a form of matter?

9.  On converting 308 K, 329 K and 391 K to Celsius scale, the correct sequence of temperatures will be:

10. Which condition out of the following will increase the evaporation of water?

11. Choose the correct statement from the following:

12.  Which one of the following set of phenomena would increase on raising the temperature?

13. Which of the following phenomena always results in the cooling effect?

14. When heat is constantly supplied by a burner to boiling water, then the temperature of water during vaporisation :

15. Which of the following has the strongest interparticle forces at room temperature?

16. Seema visited a Natural Gas Compressing unit and found that the gas can be liquefied under specific conditions of temperature and pressure. While sharing her experience with friends she got confused. Help her to identify the correct set of conditions.

17. Which of the following causes the temperature of a substance to remain constant while it is undergoing a change in its state?

18. Which of the following conditions is most favourable for converting a gas into a liquid?

19.  Which one of the following statements is not true?

20. A form of matter has no fixed shape but it has a fixed volume. An example of this form of matter is