MCQ Matter in Our Surroundings | NCERT Class 9

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MCQ Matter in Our Surroundings Melting Boiling Condensation Freezing Point — **Melting – Boiling – Freezing – Condensation Point**

Online Test | MCQ Matter in Our Surroundings | NCERT Class 9 Science Chapter 1 | CBSE Syllabus

Every student of class 9 of NCERT/CBSE syllabus may take part this online test of NCERT Class 9 Science Chapter 1 MCQ Matter in Our Surroundings and verify his score to check preparedness

#1. Which phenomenon will accelerate if temperature is raised

a) diffusion evaporation, compression of gases

b) evaporation, diffusion, expansion of gases

c) evaporation, compression of gases, solubility

d) evaporation, compression of gases, solubility, diffusion

#2. A glass tumbler containing hot water is kept in the freezer compartment of a refrigerator (temperature <0^oC). If you could measure the temperature of the content of the tumbler, which of the following graphs would correctly represent the change in its temperature as a function of time.

#3. From which vessel, the rate of evaporation will be highest?

a) A

b) B

c) C

d) D

#4. Rahul visited a natural gas compressing unit & - found that the gas can be liquefied under specific conditions of temperature & pressure. Rahul got confused while sharing his experience with friends. Help him to identify correct set of conditions

a) low pressure & low temperature

b) low pressure & high temperature

c) high pressure & low temperature

d) high pressure & high temperature

#5. When an iron nail was put into the copper sulphate solution, then after sometime we had observed reddish brown deposit on the iron nail. This deposition was of

a) Sulphur

b) Oxygen

c) Iron

d) Copper

#6. Liquids tend to flow. Then which is correct

a) gases & solids behave like fluids

b) only gases behave like fluids

c) only liquids are fluids

d) gases & liquids behave like fluids

#7. The boiling points of diethyl ether, acetone & n-butyl alcohol are 35⁰C, 56⁰C & 118⁰C respectively. Which one of the following represents their boiling points in Kelvin scale?

a) 306 K, 329 K, 391 K

b) 308 K, 329 K, 392 K

c) 308 K, 329 K, 391 K

d) 329 K, 392 K, 308 K

#8. Sulphur & Iron fillings are mixed & heated. After cooling the product was checked with a magnet but iron fillings were separated. The product thus formed was

a) compound

b) element

c) alloy

d) mixture

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

a) Increase in temperature of water

b) Decrease in temperature of water

c) Less exposed surface area of water

d) Adding common salt to water

#10. A student heats a beaker containing ice & water. He measures the temperature of the content of the beaker as a function of time. Which one of the following figure represent the correct figure?

#11. On converting 25⁰C, 38⁰C, 66⁰C to Kelvin scale, the correct sequence of temperature will be -

a) 298 K, 311 K, 339 K

b) 298 K, 300 K, 338 K

c) 273 K, 278 K, 543 K

d) 298 K, 310 K, 338 K

#12. Water kept in earthen pot becomes cool during summer because of

a) Osmosis

b) Transpiration

c) Evaporation

d) diffusion

#13. In which cases, the inter-molecular distance of hydrogen gas would increase - a. Increasing in pressure on hydrogen contained in a closed container, b. Some hydrogen gas leaking out of the container, c. Increasing the volume of the container of hydrogen gas, d. Adding more hydrogen gas to the container without increasing the volume of the container?

a & c

a & d

b & d

b & c

#14. A student heats a beaker containing ice & water. He measures the temperature of the content of the beaker as a function of time. Which one of the following figure represent the correct figure?

#15. Choose the correct statement

a) conversion of solid into vapours without passing liquid state is called vaporisation

b) conversion of vapours into solid without passing liquid state is called freezing

c) conversion of solid into liquid is called sublimation

d) conversion of solid into vapours without passing liquid state is called sublimation

#16. When crushed iron sulphide is heated in a China dish over a flame of burner

a) a colourless pungent smelling gas is produced

b) the colour of iron sulphide changes from black to yellow

c) vapours of sulphur are produced

d) nothing happens

#17. A few substances are arranged in the increasing order of 'forces of attraction' between their particles. Which represents correct arrangement?

a) air, sugar, oil

b) oxygen, water, sugar

c) water, air, wind

d) salt, juice, air

Finish

Results

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To Be Continued

Online Test | MCQ Matter in Our Surroundings | NCERT Class 9 Science Chapter 1 | CBSE Syllabus

#1. Which phenomenon will accelerate if temperature is raised

#2. A glass tumbler containing hot water is kept in the freezer compartment of a refrigerator (temperature <0oC). If you could measure the temperature of the content of the tumbler, which of the following graphs would correctly represent the change in its temperature as a function of time.

#3. From which vessel, the rate of evaporation will be highest?

#4. Rahul visited a natural gas compressing unit & - found that the gas can be liquefied under specific conditions of temperature & pressure. Rahul got confused while sharing his experience with friends. Help him to identify correct set of conditions

#5. When an iron nail was put into the copper sulphate solution, then after sometime we had observed reddish brown deposit on the iron nail. This deposition was of

#6. Liquids tend to flow. Then which is correct

#7. The boiling points of diethyl ether, acetone & n-butyl alcohol are 350C, 560C & 1180C respectively. Which one of the following represents their boiling points in Kelvin scale?

#8. Sulphur & Iron fillings are mixed & heated. After cooling the product was checked with a magnet but iron fillings were separated. The product thus formed was

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

#10. A student heats a beaker containing ice & water. He measures the temperature of the content of the beaker as a function of time. Which one of the following figure represent the correct figure?

#11. On converting 250C, 380C, 660C to Kelvin scale, the correct sequence of temperature will be -

#12. Water kept in earthen pot becomes cool during summer because of

#14. A student heats a beaker containing ice & water. He measures the temperature of the content of the beaker as a function of time. Which one of the following figure represent the correct figure?

#15. Choose the correct statement

#16. When crushed iron sulphide is heated in a China dish over a flame of burner

#17. A few substances are arranged in the increasing order of 'forces of attraction' between their particles. Which represents correct arrangement?

Results

#2. A glass tumbler containing hot water is kept in the freezer compartment of a refrigerator (temperature <0^oC). If you could measure the temperature of the content of the tumbler, which of the following graphs would correctly represent the change in its temperature as a function of time.

#7. The boiling points of diethyl ether, acetone & n-butyl alcohol are 35⁰C, 56⁰C & 118⁰C respectively. Which one of the following represents their boiling points in Kelvin scale?

#11. On converting 25⁰C, 38⁰C, 66⁰C to Kelvin scale, the correct sequence of temperature will be -