Railways Basic Science and Engineering Mass, Weight and Density Question Bank

done Mass, Weight and Density Total Questions - 50

• question_answer1)
  Density of 5 liter of water having mass 5 kg is:
  A)
   \[100\,\,kg\,\,{{m}^{-3}}\]                    done clear
  B)
   \[1000\,\,kg\,\,{{m}^{-3}}\]   done clear
  C)
   \[250\,\,kg\,\,{{m}^{-3}}\]                    done clear
  D)
   \[7500\,\,kg\,\,{{m}^{-3}}\]   done clear
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• question_answer2)
  Mass of an object can be measured easily by using
  A)
   screw gauge done clear
  B)
   physical balance done clear
  C)
   beam balance or calibrated electronic balance done clear
  D)
   spring balance/compression balance done clear
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• question_answer3)
  If the mass of a ball is 5 kg on earth, then what would be its mass on Jupiter?
  A)
   5 kg                 done clear
  B)
   5000 kg done clear
  C)
   40000 kg                      done clear
  D)
   50 kg done clear
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• question_answer4)
  Mass is property of a body that cannot be changed by its
  A)
   location                        done clear
  B)
   speed done clear
  C)
   shape               done clear
  D)
   all of above done clear
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• question_answer5)
  Greek alphabet for density is
  A)
   II                                 done clear
  B)
   rho done clear
  C)
   Ohms               done clear
  D)
   mho done clear
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• question_answer6)
  What is the mass of an object whose weight on earth is 196 N?
  A)
   20 kg                done clear
  B)
   0.20 kg done clear
  C)
   1960 kg                        done clear
  D)
   2 kg done clear
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• question_answer7)
  If acceleration of a free fall on Moon is \[1.6\,\,m{{s}^{-2}}\] and on Earth is \[10\,\,m{{s}^{-2}}\]A rock has a mass of 10 kg on Earth. Its weight on Earth will be
  A)
   16 N                            done clear
  B)
   100 N done clear
  C)
   32 N                            done clear
  D)
   50 N done clear
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• question_answer8)
  How much would a man, whose mass is 60 kg weight on the moon?
  A)
   9.8 N               done clear
  B)
   600 N done clear
  C)
   60 N                done clear
  D)
   98 N done clear
  View Solution play_arrow

• question_answer9)
  Mass of oil is 11040 kg and volume is 12 m3, its density would be
  A)
  \[92\,\,kg\,\,{{m}^{-3}}\]                      done clear
  B)
   \[920\,\,kg\,\,{{m}^{-3}}\] done clear
  C)
  \[9.2\,\,kg\,\,{{m}^{-3}}\]                     done clear
  D)
   \[1.08\times {{10}^{-3}}\] done clear
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• question_answer10)
  Newton is unit of
  A)
   Weight  done clear
  B)
   Mass done clear
  C)
   Energy              done clear
  D)
   Power done clear
  View Solution play_arrow

• question_answer11)
  Force due to pull of gravity is called
  A)
   Weight  done clear
  B)
   Force done clear
  C)
   Mass                            done clear
  D)
   Tension done clear
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• question_answer12)
  Beam balance or calibrated electronic balance is used to measure
  A)
   Mass                            done clear
  B)
   Time done clear
  C)
   Weight              done clear
  D)
   acceleration     done clear
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• question_answer13)
                Due to Earth's gravitational pull, 1 kg mass experiences force of
  A)
   5 N                              done clear
  B)
   100 N done clear
  C)
   50 N                            done clear
  D)
   10 N done clear
  View Solution play_arrow

• question_answer14)
  Difference between mass and weight is
  A)
   mass is a force and weight is a quantity done clear
  B)
   mass and weight both are force done clear
  C)
   mass and weight both are quantities done clear
  D)
   mass is quantity and weight is force done clear
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• question_answer15)
  For an object of mass 4 kg, incorrect statement is
  A)
   Weight of object on earth =10\[\times \]Mass of object on earth done clear
  B)
   Mass of object on earth = Mass of object on moon done clear
  C)
   Weight of object on earth = 1/6\[\times \]Weight of object on moon done clear
  D)
   Weight of object on moon = 1/6\[\times \]Weight of object on earth done clear
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• question_answer16)
  As we gain altitude density of air
  A)
   increases done clear
  B)
   decreases done clear
  C)
   remains constant done clear
  D)
   none of above done clear
  View Solution play_arrow

• question_answer17)
  What is volume?
  A)
   The amount of space an object takes up done clear
  B)
   The amount of matter in an object done clear
  C)
   The pull of gravity on an object done clear
  D)
   Mass divided by volume done clear
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• question_answer18)
  What is Mass?
  A)
   The amount of space an object takes up done clear
  B)
   The amount of matter in an object done clear
  C)
   The pull of gravity on an object done clear
  D)
   Mass divided by volume done clear
  View Solution play_arrow

• question_answer19)
  What is weight?
  A)
   The amount of space an object takes up done clear
  B)
   The amount of matter in an object done clear
  C)
   The pull of gravity on an object done clear
  D)
   Mass divided by volume done clear
  View Solution play_arrow

• question_answer20)
  Regular volume is measured in
  A)
   Pounds (Ibs)                  done clear
  B)
   Grams (g) done clear
  C)
   Milliliters (mL)   done clear
  D)
   Cubic centimeters done clear
  View Solution play_arrow

• question_answer21)
  Mass and weight
  A)
   Both measure the same thing. done clear
  B)
   Are exactly equal. done clear
  C)
   Are two different quantities. done clear
  D)
   Are both measured in kilograms. done clear
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• question_answer22)
  The law of______ of mass states that the mass of a loosed system must remain constant over time.
  A)
   Weight              done clear
  B)
   Density done clear
  C)
   Consistency                   done clear
  D)
   Conservation done clear
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• question_answer23)
  What is the weight of a 1kg mass object on planet Earth?
  A)
   9.8 pounds                    done clear
  B)
   1 Newton done clear
  C)
   5 New tons                    done clear
  D)
   9.8 New tons done clear
  View Solution play_arrow

• question_answer24)
  Which method of determining mass involves measuring how much an object resists acceleration?
  A)
   Inertial mass                  done clear
  B)
   Atomic mass done clear
  C)
   Gravitational mass         done clear
  D)
   Newton mass- done clear
  View Solution play_arrow

• question_answer25)
  Weight is the measure of the force of___ on an object.
  A)
   Density             done clear
  B)
   Mass done clear
  C)
   Matter              done clear
  D)
   Gravity done clear
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• question_answer26)
  If the density of planet is doubled without any change in its radius, how does g change on the planet?
  A)
   It remains the same        done clear
  B)
   It is tripled done clear
  C)
   It reduces                      done clear
  D)
   It is doubled. done clear
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• question_answer27)
  The mass of the moon is nearly 10% of the mass of the earth. What will be the gravitational force of the earth on the moon, in comparison to the gravitational force of the moon on the earth?
  A)
   Both of the force will be equal done clear
  B)
   Gravitational force of the earth on the moon is much lesser done clear
  C)
   Gravitational force of the moon on file earth is much lesser done clear
  D)
   There is no effect done clear
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• question_answer28)
  If earth loses its gravity, then for a body
  A)
   A weight becomes zero, but not the mass done clear
  B)
   Mass becomes zero but not weight done clear
  C)
   Neither mass nor weight becomes zero done clear
  D)
   Both mass and weight are zero done clear
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• question_answer29)
  A ball is dropped from a spacecraft revolving around the earth at a height of 120 km. What will happen to the ball?
  A)
   It will go very far in space done clear
  B)
   It will move with the same speed tangentially to the spacecraft done clear
  C)
   It will fall down to the earth gradually done clear
  D)
   It will continue to move with the same speed along the original orbit of spacecraft done clear
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• question_answer30)
  Aman waves his arm, while walking. This is
  A)
   To keep constant velocity done clear
  B)
   To ease the tension done clear
  C)
   To increase the velocity done clear
  D)
   To balance the effect of earth's gravity. done clear
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• question_answer31)
  Kepler's second law is based on
  A)
   Newton's first law done clear
  B)
   Newton's second law done clear
  C)
   Special theory of relativity done clear
  D)
   Conservation of angular momentum done clear
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• question_answer32)
  The density of aluminum is 2.7 g/cm3. Its density in kg/m3 is
  A)
   \[27\,\,kg/{{m}^{3}}\]             done clear
  B)
   \[2700\,kg/{{m}^{3}}\] done clear
  C)
   \[270\,\,kg/{{m}^{3}}\]                        done clear
  D)
   \[27000\,\,kg/{{m}^{3}}\]b done clear
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• question_answer33)
  When water is heated, it expands and
  A)
   rises upward done clear
  B)
   moves downward done clear
  C)
   remain at the same place done clear
  D)
   None of these done clear
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• question_answer34)
  When air is cooled, its density
  A)
   increases           done clear
  B)
   decreases done clear
  C)
   remains same    done clear
  D)
   None of these done clear
  View Solution play_arrow

• question_answer35)
  The density of wood is\[0.65\,\,gc{{m}^{-3}}\]in CGS system. Its density in SI system is
  A)
   \[65\,\,kg{{m}^{-3}}\]             done clear
  B)
   \[6.5\,\,kg{{m}^{-3}}\] done clear
  C)
   \[650\,\,kg{{m}^{-3}}\] done clear
  D)
   \[0.65\,\,kg{{m}^{-3}}\] done clear
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• question_answer36)
  To determine the density of a Solid, we have to determine its
  A)
   mass and area   done clear
  B)
   weight and area done clear
  C)
   mass and volume           done clear
  D)
   weight and volume done clear
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• question_answer37)
  Which of these has the lowest density?
  A)
   cork                             done clear
  B)
   glass done clear
  C)
   water                done clear
  D)
   aluminum done clear
  View Solution play_arrow

• question_answer38)
  The density of water at room temperature is about
  A)
   \[10\,g/c{{m}^{3}}\]               done clear
  B)
   \[1\,g/c{{m}^{3}}\] done clear
  C)
   \[0.1\,g/c{{m}^{3}}\]              done clear
  D)
   \[0.01\,g/c{{m}^{3}}\] done clear
  View Solution play_arrow

• question_answer39)
  An alloy has a relative density of 10. If the density of water is \[1000\,kg/{{m}^{3}}\], the density of the alloy is:
  A)
   \[100\,\,kg/{{m}^{3}}\]                        done clear
  B)
   \[0.01\,\,kg/{{m}^{3}}\] done clear
  C)
   \[10,000\,\,kg/{{m}^{3}}\]       done clear
  D)
   \[1010\,\,kg/{{m}^{3}}\] done clear
  View Solution play_arrow

• question_answer40)
  The size, mass & density of which of the planets is very near to those of Earth?
  A)
   Venus               done clear
  B)
   Mercury done clear
  C)
   Jupiter              done clear
  D)
   Saturn done clear
  View Solution play_arrow

• question_answer41)
  The ratio of specific weight of liquid to specific weight of water is
  A)
   specific gravity   done clear
  B)
   specific weight done clear
  C)
   specific volume  done clear
  D)
   all the above done clear
  View Solution play_arrow

• question_answer42)
  Specific weight of water at \[20{}^\circ C\] is
  A)
   \[9810\,\,kg/{{m}^{3}}\]          done clear
  B)
   \[9810N/{{m}^{3}}\] done clear
  C)
   \[9.81\,\,kg/{{m}^{3}}\]                       done clear
  D)
   all the above done clear
  View Solution play_arrow

• question_answer43)
  It is a product of mass density and gravitational acceleration
  A)
   mass density                 done clear
  B)
   specific weight done clear
  C)
   specific volume  done clear
  D)
   specific gravity done clear
  View Solution play_arrow

• question_answer44)
  Specific weight of mercury is
  A)
   \[13.6\,kg/{{m}^{3}}\]             done clear
  B)
   \[13600\,kg/{{m}^{3}}\] done clear
  C)
   \[136\,kg/{{m}^{3}}\]              done clear
  D)
   all the above done clear
  View Solution play_arrow

• question_answer45)
  Which has the most mass?
  A)
   Pluto                done clear
  B)
   A Pencil done clear
  C)
   Earth                done clear
  D)
   The Moon done clear
  View Solution play_arrow

• question_answer46)
  Sum of amount of matter in a substance is called its
  A)
   mass                            done clear
  B)
   weight done clear
  C)
   length               done clear
  D)
   volume done clear
  View Solution play_arrow

• question_answer47)
  Which of the following statements are true of both weight and mass?
  A)
   Mass depends on gravity, weight does not done clear
  B)
   Heavier objects weigh more than light objects. done clear
  C)
   Gravity is necessary to measure both weight and mass done clear
  D)
   Weight is a force, mass is a measure of inertia done clear
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• question_answer48)
  In Newton's second law of motion, what is the relationship between acceleration and mass? Acceleration
  A)
   Is directly proportional to mass. done clear
  B)
   Is inversely proportional to mass. done clear
  C)
   Does not depend on mass. done clear
  D)
   It is dividing by mass. done clear
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• question_answer49)
  The weight of an object of mass 15 kg at the centre of the earth is ___.
  A)
   147 N               done clear
  B)
   147 kg done clear
  C)
   zero                              done clear
  D)
   150 N done clear
  View Solution play_arrow

• question_answer50)
  Mass remains ____ throughout the universe.
  A)
   varies               done clear
  B)
   zero done clear
  C)
   constant                       done clear
  D)
   negative done clear
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