Matter Short Questions and Answers

Questions

41 The force that binds the particles of matter together is known as:

A Intermolecular force

B Intermolecular space

C Bond

D Nuclear force

Answer: Intermolecular force

42 When a teaspoon of solid sugar is dissolved in a glass of liquid water, what phase or phases are present after mixing:

A Solid only

B Still solid and liquid

C Liquid only

D None of these

View Answer

Answer: Liquid only

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43 In which phase of matter would you expect compound (alcohol exists) at room temperature?

A Liquid

B Plasma

C Solid

D None of these

View Answer

Answer: Liquid

44 Which of the following expression at constant pressure represents Charles law?

A VT =constant

B PV=constant

C VT=constant

D None of the above

View Answer

Answer: VT =constant

45 A bottle of ammonia and a bottle of dry hydrogen chloride connected through a long tube are opened simultaneously at both ends, the while ammonium chloride ring first formed will be:

A Near the hydrogen chloride bottle

B Throughout the length of the tube

C At the center of the tube

D Near the ammonia bottle

View Answer

Answer: Near the hydrogen chloride bottle

46 Select the one that when used would be considered as best condition for liquification of a gas:

A Increasing the pressure and decreasing the temperature

B Increasing the temperature

C Decreasing the pressure

D Decreasing the pressure and increasing the temperature

View Answer

Answer: Increasing the pressure and decreasing the temperature

47 The process of change of liquid state into gaseous state at constant temperature is known as:

A Evaporation

B Melting

C Boiling

D Fusion

View Answer

Answer: Boiling

48 What is Dry Ice?

A Solid carbon dioxide

B Ice having no water of crystallisation

C Ice that has been dried

D None of these

View Answer

Answer: Solid carbon dioxide

49 Rate of diffusion depends upon:

A Surface area

B Temperature

C Both temperature and surface area

D None of these

View Answer

Answer: Both temperature and surface area

50 The evaporation of a liquid can best be carried out in a:

A China dish

B Test tube

C Flask

D None of these

View Answer

Answer: China dish

51 Density of a substance is defined as

A ratio of mass and temperature

B product of mass and volume

C ratio of mass and volume

D product of mass and temperature

View Answer

Answer: ratio of mass and volume

52 The process involving the change of state from solid to gas is called

A Sublimation

B Boiling

C Melting

D None of the above

View Answer

Answer: Sublimation

53 Zig-zag movement of the solute particle in a solution is known as

A Brownian motion

B Circular motion

C Linear motion

D Curved motion

View Answer

Answer: Brownian motion

54 Pressure of air at sea level is:

A 76 mm of Hg

B 760 cm of Hg

C One atmosphere

D All are correct

View Answer

Answer: 76 mm of Hg

55 By which apparatus a mixture of an immiscible liquid is separated?

A Separating Funnel

B Distillation Flask

C Burner

D Beaker

View Answer

Answer: Separating Funnel

56 Which of the following is most suitable for summer?

A Polyester

B Nylon

C Cotton

D Silk

View Answer

Answer: Cotton

57 Which of the following is not endothermic process?

A Temperature

B Fusion

C Vapourisation

D Insoluble heavy impurities

View Answer

Answer: Temperature

58 The boiling point of alcohol is 78oC. What is this temperature in Kelvin scale:

A 351 K

B 373 K

C 78 K

D None of these

View Answer

Answer: 351 K

59 Volume of a gas at a particular temperature and on atmospheric pressure is 200 ml. Keeping the temperature constant if pressure is increased to 5 atmosphere, then volume of the gas will be:

A 40 ml

B 207 ml

C 205 ml

D None of these

View Answer

Answer: 40 ml

60 Equal volumes of all gases under similar conditions of temperature and pressure contain equal numbers of molecules. This statement was made by:

A Avogadro

B John Dalton

C Gay- lussae

D Berzilius

View Answer

Answer: Avogadro

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