Daily Updated MCQS

Q:Which of the following is not a macromolecule ?

  • (A)sand
  • (B)haemoglobin
  • (C)diamond
  • (D)maltose

    • The Correct Answer is maltose

    Uploaded By Saad Naveed

Q:Percentage of calcium in calcium carbonate is____?

  • (A)80%
  • (B)30%
  • (C)40%
  • (D)20%

    • The Correct Answer is 40%

    Uploaded By Saad Naveed

Q:How many isotopes have odd atomic number ?

  • (A)154
  • (B)280
  • (C)86
  • (D)300

    • The Correct Answer is 86

    Uploaded By Saad Naveed

Q:The number of moles of CO2 which contains 16 g of oxygen is_______?

  • (A)0.25
  • (B)0.5
  • (C)0.75
  • (D)1

    • The Correct Answer is 0.5

    Uploaded By Saad Naveed

Q:The volume occupied by 2.8 g of N2 at STP_____________?

  • (A)2.24 dm3
  • (B)22.4 dm3
  • (C)1.12 dm3
  • (D)112 dm3

    • The Correct Answer is 2.24 dm3

    Uploaded By Saad Naveed

Q:Empirical formula of chloroform is _______________?

  • (A)CH2 C12
  • (B)CH3C1
  • (C)CC14
  • (D)CHCL3

    • The Correct Answer is CHCL3

    Uploaded By Saad Naveed

Q:The number of isotopes of elements with even mass number and even atomic number are _________?

  • (A)280
  • (B)300
  • (C)154
  • (D)54

    • The Correct Answer is 154

    Uploaded By Saad Naveed

Q:Which of the following terms is not used for ionic compound ?

  • (A)formula unit
  • (B)empirical formula
  • (C)molecular formula
  • (D)formula mass

    • The Correct Answer is molecular formula

    Uploaded By Saad Naveed

Q:Which one of the following has the maximum number of isotopes ?

  • (A)oxygen
  • (B)carbon
  • (C)tin
  • (D)chlorine

    • The Correct Answer is tin

    Uploaded By Saad Naveed

Q:Bolometer is used to measure

  • (A)Frequency
  • (B)Temperature
  • (C)Wavelength
  • (D)Velocity

    • The Correct Answer is Velocity

    Uploaded By Javeria Naushad

Q:A jet engine works on the principle of conservation of

  • (A)Linear momentum
  • (B)Angular momentum
  • (C)Energy Mass
  • (D)Mass Velocity

    • The Correct Answer is Linear momentum

    Uploaded By Javeria Naushad

Q:What is the scale used for measuring the intensity of the earthquake?

  • (A)Metric Scale
  • (B)Quake Scale
  • (C)Richter Scale
  • (D)Epicentre Scale

    • The Correct Answer is Richter Scale

    Uploaded By Javeria Naushad

Q:If a lift is going up with acceleration, the apparent weight of a body is

  • (A)More or less the true weight
  • (B)Less than the true weight
  • (C)Equal to the true weight
  • (D)More than the true weight

    • The Correct Answer is More than the true weight

    Uploaded By Javeria Naushad

Q:The electric motor converts

  • (A)Electrical energy into mechanical energy
  • (B)Mechanical energy into electrical energy
  • (C)Electrical energy into light energy
  • (D)None of these

    • The Correct Answer is Electrical energy into mechanical energy

    Uploaded By Javeria Naushad
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