Matter In Our Surrounding Test

Matter In Our Surrounding

This is Matter in our Surrounding Test-04 for CBSE class 09 Science.. There are 15 questions in this test with each question having around four answer choices.

Questions & Answers

1
When acetone or nail polish remover is applied cooling is experienced due to which factor?
  • A
    Reaction of nail polish with acetone
  • B
    Boiling of acetone.
  • C
    reaction of acetone with skin
  • D
    Evaporation of acetone from the nail
    Correct
2
Match the following with correct response. (1) Fusion (2) Vaporization (3) Condensation (4) Solidification (A) Change of liquid state into gaseous state (B) Change of liquid state into solid state (C) Change of vapour state into liquid state (D) Change of solid state into liquid state
  • A
    1-B, 2-D, 3-A, 4-C
  • B
    1-D, 2-A, 3-C, 4-B
    Correct
  • C
    1-A, 2-C, 3-B, 4-D
  • D
    1-C, 2-B, 3-D, 4-A
3
Match the following with correct response. (1) Sublimation (2) Evaporation (3) Latent heat of vaporization (4) Latent heat of fusion (A) Heat required to change the state of 1Kg of solid into liquid (B) Change of liquid state into vapours without coming to its boiling point (C) Change of solid directly into vapours (D) Heat required to change the state of 1Kg liquid into vapours
  • A
    1-A, 2-C, 3-B, 4-D
  • B
    1-B, 2-D, 3-A, 4-C
  • C
    1-D, 2-A, 3-C, 4-B
  • D
    1-C, 2-B, 3-D, 4-A
    Correct
4
Match the following with correct response. (1) Inter mixing of substance on their own (2) Temperature at which liquid changes into vapour (3) Temperature at which solid changes into liquid (4) Energy possessed by the particles of the matter (A) Diffusion (B) Melting point (C) Boiling point (D) Kinetic energy
  • A
    1-D, 2-A, 3-C, 4-B
  • B
    1-A, 2-C, 3-B, 4-D
    Correct
  • C
    1-C, 2-B, 3-D, 4-A
  • D
    1-B, 2-D, 3-A, 4-C
5
Match the following with correct response. (1) Boiling point of water (2) Melting point of water (3) Boling point of Acetone (4) Melting point of Aluminum (A) \(660^\circ c\)(B) 273K (C) 373K (D) \(56^\circ c\)
  • A
    1-B, 2-D, 3-A, 4-C
  • B
    1-D, 2-A, 3-C, 4-B
  • C
    1-A, 2-C, 3-B, 4-D
  • D
    1-C, 2-B, 3-D, 4-A
    Correct
6
Identify the incorrect statement about evaporation A It causes cooling B It increase with increase in humidity C It decreases with increase in temperature D It increases with increase in wind speed
  • A
    (a), (b) and (c) are correct
  • B
    All of these
  • C
    (a) and (b) are correct
  • D
    (b) and (c) are correct
    Correct
7
Which of the following is correct about latent heat? A It does not increases the temperature B It does not change the state of the substance C It increases the kinetic energy of the molecule D Ice is more effective in cooling than water at same temperature due to latent heat
  • A
    (a) and (b) are correct
  • B
    (a), (c) and (d) are correct
  • C
    (b) and (c) are correct
  • D
    All of these
Answer
Not Available
8
Water kept in an earthen pot becomes cool in summer, because A Molecules of water escape through pores, and cause cooling B Earthen pots are made up of clay C It decreases the temperature of water D In summer, the rate of evaporation of water is faster.
  • A
    (b) and (c) are correct
  • B
    (a), (b) and (c) are correct
  • C
    All of these
  • D
    (a) and (b) are correct
    Correct
9
The two major gases present in air are
  • A
    Nitrogen and Hydrogen
  • B
    Hydrogen and Oxygen
  • C
    Nitrogen and oxygen
    Correct
  • D
    Nitrogen and Carbon dioxide.
10
Three pieces of cloths were soaked in water, alcohol and ether separately and kept on a table. What is the decreasing order of drying of the cloths?
  • A
    Water > Alcohol < Ether
  • B
    Water < Alcohol < Ether
    Correct
  • C
    Water > Alcohol > Ether
  • D
    Ether > Alcohol > Water
11
Sulphur dioxide is collected in the lab in a gas jar by upward displacement of air. Which of the following statement is correct regarding the density of the gas?
  • A
    It is heavier than air
    Correct
  • B
    Its density is equal to that of air
  • C
    No correct statement can be made about the density of the gas.
  • D
    It is lighter than air
12
Statement A: The temperature of the liquid becomes constant once it starts boiling Statement B: Pressure of air at sea level is 70cm Which of the two statements is true?
  • A
    Both a and b
  • B
    Statement A
    Correct
  • C
    Statement B
  • D
    Neither a or b.
13
Which of the following is needed by surgeons during surgery?
  • A
    Ethane
  • B
    Propanol
  • C
    ether
    Correct
  • D
    Acid
14
Match the following with correct response. (1) Physical state of water at (2) Water at 273K (3) Water at (4) Energy required to change the state (A) Solid (B) Latent heat (C) Vapour (D) liquid
  • A
    1-B, 2-D, 3-A, 4-C
  • B
    1-A, 2-C, 3-B, 4-D
  • C
    1-C, 2-B, 3-D, 4-A
  • D
    1-D, 2-A, 3-C, 4-B
    Correct
15
Which of the following is not a chemical change? A Changing of milk into curd B Freezing of water C Burning of paper D Mixing of iron filling & sand
  • A
    (a) and (b) are correct
  • B
    (b) and (d) are correct
    Correct
  • C
    (a), (b) and (c) are correct
  • D
    All of these