9th Class Science Is Matter Around Us Pure Question Bank

done MCQs - Is Matter Around us Pure Total Questions - 60

• question_answer1)
  Which of following is a pure substance?
  A)
  Air done clear
  B)
  Distilled water done clear
  C)
  Steel done clear
  D)
  Brass done clear
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• question_answer2)

  Which of the following statements are true for pure substances?

  I. Pure substances contain only one kind of particles.

  II. Pure substances may be compounds or mixtures.

  III. Pure substances have the same composition throughout.

  IV. Pure substances can be exemplified by all elements other than nickel. (NCERT Exemplar)

  A)
  I and II done clear
  B)
  I and III done clear
  C)
  III and IV done clear
  D)
  II and III done clear
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• question_answer3)
  Which of the following is considered to be a pure substance?
  A)
  Sodium chloride done clear
  B)
  Muddy water done clear
  C)
  Granite done clear
  D)
  Milk of magnesia done clear
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• question_answer4)
  Which of the following property does not prove that water is a compound?
  A)
  Water is made up of two different elements (H and O). Which chemically combined with one another in a fixed proportion done clear
  B)
  Water has fixed boiling point (b. p.) done clear
  C)
  The constituents of water cannot be separated by simple physical methods done clear
  D)
  Distilled water and tap water have same taste and constituents done clear
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• question_answer5)
  The element 'X' having atomic number 16 is
  A)
  a metal done clear
  B)
  a metalloid done clear
  C)
  a non-metal done clear
  D)
  None of these done clear
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• question_answer6)
  Which of the following element is a non-metal?
  A)
  Fe done clear
  B)
  Na done clear
  C)
  Cu done clear
  D)
  CI done clear
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• question_answer7)
  Which one of following is a metalloid?
  A)
  Na done clear
  B)
  Fe done clear
  C)
  Cu done clear
  D)
  As done clear
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• question_answer8)
  Two elements X and Y combine to give a product Z. The correct statement about Z is
  A)
  Z has more mass than that of X done clear
  B)
  Z has less mass than that of X done clear
  C)
  Z has less mass than that of Y done clear
  D)
  Z show same properties as that of X and Y done clear
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• question_answer9)

  Two substances, A and B were made to react to form a third substance, \[{{\mathbf{A}}_{\mathbf{2}}}\mathbf{B}\]  according to the following reaction \[\mathbf{2A+B}\to {{\mathbf{A}}_{\mathbf{2}}}\mathbf{B}\]

  Which of the following statements concerning this reaction are incorrect? (NCERT Exemplar)

  I. The product \[{{\mathbf{A}}_{\mathbf{2}}}\mathbf{B}\] shows the properties of substances A and B.

  II. The product will always have a fixed composition.

  III. The product so formed cannot be classified as a compound.

  IV. The product so formed is an element.

   
  A)
  I, II and III done clear
  B)
  II, III and IV done clear
  C)
  I, III and IV done clear
  D)
  II, III and IV done clear
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• question_answer10)
  Which of the following is not a compound?
  A)
  Sodium chloride done clear
  B)
  Germanium done clear
  C)
  Water done clear
  D)
  Methane done clear
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• question_answer11)

  Two chemical species X and Y combine together to form a product P which contains both X and Y, X + Y \[\to\] P, X and Y cannot be broken down into simpler substances by simple chemical reactions. Which of the following concerning the species X, Y and P are correct? (NCERT Exemplar)

  I. P is a compound

  II. X and Y are compounds

  III. X and Y are elements

  IV. P has a fixed composition

  A)
  I and III done clear
  B)
  I, II and IV done clear
  C)
  II, III and IV done clear
  D)
  I, III and IV done clear
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• question_answer12)
  The metal present in quicklime is lithium.
  A)
  True done clear
  B)
  False done clear
  C)
  Can't say done clear
  D)
  Partially true/false done clear
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• question_answer13)
  Which of the following statements is not true about the compound?
  A)
  Elements are combined chemically to form a compound done clear
  B)
  The constituents lose their properties done clear
  C)
  The constituents can be separated by simple physical methods done clear
  D)
  A compound is always homogeneous in nature done clear
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• question_answer14)
  Which of the following compounds contains only non-metals?
  A)
  Ammonia done clear
  B)
  Rust done clear
  C)
  Quicklime done clear
  D)
  Sodium chloride done clear
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• question_answer15)
  In which of the following the constituents are present in any ratio?
  A)
  Compound done clear
  B)
  Mixture done clear
  C)
  Colloid done clear
  D)
  Solution done clear
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• question_answer16)

  Which of the following are homogeneous in nature? (NCERT Exemplar)

  I. Ice

  II. Wood

  III. Soil

  IV. Air

  A)
  I and III done clear
  B)
  II and IV done clear
  C)
  I and IV done clear
  D)
  III and IV done clear
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• question_answer17)
  Which of the following is an example of a homogeneous mixture?
  A)
  Polluted air done clear
  B)
  Muddy water done clear
  C)
  Salt solution done clear
  D)
  None of these done clear
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• question_answer18)
  Identify homogeneous mixture from the following
  A)
  soil done clear
  B)
  vinegar done clear
  C)
  unfiltered tea done clear
  D)
  polluted air done clear
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• question_answer19)
  Select the homogenous mixture from the following
  A)
  carbon dioxide gas dissolved in water done clear
  B)
  air containing suspended particles done clear
  C)
  soap bubbles formed by blowing air into soap solution done clear
  D)
  water in milk done clear
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• question_answer20)
  Mixtures are always combination of the same compounds that are in different states.
  A)
  True done clear
  B)
  False done clear
  C)
  Can't say done clear
  D)
  Partially true/false done clear
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• question_answer21)
  ....... is a heterogeneous mixture.
  A)
  Soda water done clear
  B)
  Sodium chloride solution done clear
  C)
  Oil in water done clear
  D)
  Copper sulphate solution done clear
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• question_answer22)

  Which one of the following statements will result in the formation of a mixture?

  I. Crushing marble tile into small particles.

  II. Breaking ice cubes into small pieces.

  III. Adding sodium metal to water.

  IV. Adding milk in water.

  A)
  I, II and III done clear
  B)
  I, II and IV done clear
  C)
  III and IV done clear
  D)
  Only IV done clear
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• question_answer23)

  Match the Column I with Column II and select the correct option below:

  Column I   Column II A. Substance consists of only a single type of constituent particles 1. Heterogeneous mixtures B. Visible boundaries of separation between its constituents 2. Compound C. Constituents lose their properties 3. Mixture D. Chemical reaction does not take place during its formation Codes 4. Metal

  Codes
  A)
  A-1, B-2, C-3, D-4 done clear
  B)
  A-4, B-3, C-1, D-2 done clear
  C)
  A-4, B-1, C-2,D-3 done clear
  D)
  A-2, B-3,C-1,D-4 done clear
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• question_answer24)
  Which of the following statement is correct?
  A)
  A mixture containing two compounds must be heterogeneous done clear
  B)
  A heterogeneous mixture must contain at least three elements done clear
  C)
  A homogeneous mixture must be uniform done clear
  D)
  A pure substance must contain only one type of atom done clear
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• question_answer25)
  When zinc and copper are mixed we get heterogeneous mixture.
  A)
  True done clear
  B)
  False done clear
  C)
  Can't say done clear
  D)
  Partially true/false done clear
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• question_answer26)
  Air is regarded as mixture because
  A)
  its volume changes under different conditions done clear
  B)
  its temperature may change done clear
  C)
  its pressure may vary done clear
  D)
  its composition may vary done clear
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• question_answer27)
  Tincture of iodine has antiseptic properties. This solution is made by dissolving (NCERT Exemplar)
  A)
  iodine in potassium iodide done clear
  B)
  iodine in Vaseline done clear
  C)
  iodine in water done clear
  D)
  iodine in alcohol done clear
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• question_answer28)
  Which of the following is not true regarding properties of a solution?
  A)
  It is a homogeneous mixture done clear
  B)
  The solute particles do not settle down when left undisturbed done clear
  C)
  The particles of a solution are smaller than 1 nm in diameter done clear
  D)
  The solute particles can be separated from the mixture by the process by filtration done clear
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• question_answer29)
  In a sweetened tea, the sugar is called
  A)
  solvent done clear
  B)
  solute done clear
  C)
  solution done clear
  D)
  None of the above done clear
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• question_answer30)
  The concentration of a solution represents
  A)
  the total quantity of solution done clear
  B)
  the quantity of the solvent present in a solution done clear
  C)
  the quantity of the solute present in a solution done clear
  D)
  the quantity of the impurities present in a solution done clear
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• question_answer31)
  The solutions with low amount of solutes are called ........
  A)
  diluted done clear
  B)
  concentrated done clear
  C)
  solvents done clear
  D)
  None of these done clear
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• question_answer32)
  A solution contains 50 g of common salt in 450 g of water. The concentration of the solution is
  A)
  500% done clear
  B)
  50% done clear
  C)
  10% done clear
  D)
  80% done clear
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• question_answer33)
  A solution is heterogeneous mixture, which contains non-uniform composition.
  A)
  True done clear
  B)
  False done clear
  C)
  Can't say done clear
  D)
  Partially true/false done clear
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• question_answer34)
  Which of the following is an example of solution?
  A)
  Soda water done clear
  B)
  Unfiltered tea done clear
  C)
  Sand and water done clear
  D)
  Milk done clear
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• question_answer35)
  The particles of solution can be seen by naked eye.
  A)
  True done clear
  B)
  False done clear
  C)
  Can't say done clear
  D)
  Partially true/false done clear
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• question_answer36)
  A mixture of chalk powder in water is an example of
  A)
  homogeneous mixture done clear
  B)
  compound done clear
  C)
  colloidal solution done clear
  D)
  suspension done clear
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• question_answer37)
  Which of the following will not show Tyndall effect?
  A)
  Smoke done clear
  B)
  Foam done clear
  C)
  Jelly done clear
  D)
  Salt solution done clear
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• question_answer38)
  Suspensions are .........
  A)
  invisible to naked eye done clear
  B)
  visible to naked eye done clear
  C)
  visible through microscope done clear
  D)
  invisible under electron microscope done clear
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• question_answer39)
  A colloid is a .. .X... mixture and its components can be separated by the technique known as ... Y...
  A)
  X=homogeneous, y=filtration done clear
  B)
  X= heterogeneous, V= filtration done clear
  C)
  X=heterogeneous. y=centrifugation done clear
  D)
  X=homogeneous, y=centrifugation done clear
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• question_answer40)
  A liquid is able to scatter a beam of light but it leaves no residue after passing through a filter paper. A liquid can be a
  A)
  true solution done clear
  B)
  suspension done clear
  C)
  colloidal sol done clear
  D)
  concentrated solution done clear
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• question_answer41)
  The fine particles of an insoluble substance uniformly dispersed throughout a gas or liquid is called
  A)
  precipitate done clear
  B)
  suspension done clear
  C)
  colloidal solution done clear
  D)
  true solution done clear
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• question_answer42)
  Gel is which of the following kind of solution?
  A)
  Mixture done clear
  B)
  True solution done clear
  C)
  Suspension done clear
  D)
  Colloid done clear
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• question_answer43)
  Which of the following is an example of emulsion?
  A)
  Mist done clear
  B)
  Milk done clear
  C)
  Face cream done clear
  D)
  Both [b] and [c] done clear
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• question_answer44)
  A mixture of sulphur and carbon disulphide is (NCERT Exemplar)
  A)
  heterogeneous and shows Tyndall effect done clear
  B)
  homogeneous and shows Tyndall effect done clear
  C)
  heterogeneous and does not show Tyndall effect done clear
  D)
  homogeneous and does not show Tyndall Effect done clear
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• question_answer45)
  Which of the following is not an example of colloid?
  A)
  Sugar syrup done clear
  B)
  Milk done clear
  C)
  Fog done clear
  D)
  Butter done clear
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• question_answer46)
  Which of the following will not form a true solution upon shaking?
  A)
  Alum done clear
  B)
  Starch solution done clear
  C)
  Sucrose done clear
  D)
  Common salt done clear
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• question_answer47)
  Select the false statement about colloids form the following.
  A)
  Colloids are homogeneous done clear
  B)
  Colloids can scatter a beam of light passing through it done clear
  C)
  Colloids show Tyndall effect done clear
  D)
  Colloids are quite stable done clear
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• question_answer48)
  Butter is a colloid which formed when
  A)
  water is dispersed in fat done clear
  B)
  fat is dispersed in milk done clear
  C)
  water is dispersed in milk done clear
  D)
  fat is dispersed in water done clear
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• question_answer49)
  The number of phases in colloidal system are
  A)
  one done clear
  B)
  two done clear
  C)
  three done clear
  D)
  is depends on substances done clear
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• question_answer50)

  Match the Column I with Column II and select the correct option below :

  Column I   Column II A. Blood 1. Colloid B. Milk 2. Suspension C. Sugar solution 3. Emulsion D. Chalk water 4. True solution

  Codes
  A)
  A-1, B-2, C-3, D-4 done clear
  B)
  A-4, B-2, C-3, D-1 done clear
  C)
  A-1, B-3, C-4, D-2 done clear
  D)
  A-3, B-4, C-1, D-2 done clear
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• question_answer51)
  Smoke and fog differ from each other because
  A)
  they have different dispersion medium done clear
  B)
  they have different dispersed phase done clear
  C)
  Both [a] and [b] done clear
  D)
  None of the above done clear
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• question_answer52)
  Miscible liquids are separated by ........
  A)
  centrifugation done clear
  B)
  fractional distillation done clear
  C)
  filtration done clear
  D)
  sublimation done clear
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• question_answer53)
  The method used to separate a dye from blue ink is
  A)
  evaporation done clear
  B)
  sedimentation done clear
  C)
  crystallisation done clear
  D)
  filtration done clear
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• question_answer54)
  The most suitable technique used to separate mixture of different gases from bulk of air, can be
  A)
  chromatography done clear
  B)
  sublimation done clear
  C)
  fractional distillation done clear
  D)
  centrifugation done clear
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• question_answer55)
  ........ is used when a mixture contains two components, out of which one is soluble.
  A)
  Evaporation done clear
  B)
  Sublimation done clear
  C)
  Chromatography done clear
  D)
  Filtration done clear
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• question_answer56)

  Match the Column I with Column II and select the correct option below :

  Column I   Column II A. Miscible liquids 1. Distillation B. Immiscible liquids 2. Crystallisation C. Pure copper sulphate from an impure sample 3. Sublimation D. Salt and ammonium chloride 4. Separating funnel

  Codes
  A)
  A-1, B-2, C-3, D-4 done clear
  B)
  A-4, B-2, C-3, D-1 done clear
  C)
  A-1, B-3, C-4, D-2 done clear
  D)
  A-3, B-4, C-1, D-2 done clear
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• question_answer57)
  A mixture contains four solid compounds P, Q, R and S. On heating, R changes to vapour state. It can be separated from rest of the solids by
  A)
  sublimation done clear
  B)
  filtration done clear
  C)
  crystallisation done clear
  D)
  distillation done clear
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• question_answer58)

  Which of the following are physical changes? (NCERT Exemplar)

  I. Melting of iron metal

  II. Rusting of iron

  III. Bending of an iron rod

  IV. Drawing a wire of iron metal

  A)
  I, II and III done clear
  B)
  I, II and IV done clear
  C)
  I, III and IV done clear
  D)
  II, III and IV done clear
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• question_answer59)
  During burning of candle, both physical and chemical takes place.
  A)
  True done clear
  B)
  False done clear
  C)
  Can't say done clear
  D)
  Partially true/false done clear
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• question_answer60)

  Which of the following are chemical changes? (NCERT Exemplar)

  I. Decaying of wood

  II. Burning of wood

  III. Sawing of wood

  IV. Hammering of a nail into a piece of wood

  A)
  I and II done clear
  B)
  II and III done clear
  C)
  III and IV done clear
  D)
  I and IV done clear
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