MCAT Online Test Series. Online Demo Test#01

30 Questions | Total Attempts: 41

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MCAT Online Test Series. Online Demo Test#01

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Questions and Answers
  • 1. 
    The nutrients that supply an animal with its main source of energy are
    • A. 

      Proteins

    • B. 

      Carbohydrates

    • C. 

      Lipids

    • D. 

      Nucleic acids

  • 2. 
    Living together of two organisms belonging to different species is termed as
    • A. 

      Parasitism

    • B. 

      Mutualism

    • C. 

      Symbiosis

    • D. 

      Commensalism

  • 3. 
    . Normal adult human male has
    • A. 

      10 g of haemoglobin/100 g of blood

    • B. 

      14 g of haemoglobin/100 g of blood

    • C. 

      18 g of haemoglobin/100 g of blood

    • D. 

      24 g of haemoglobin/100 g of blood

  • 4. 
    The pH of water sample collected from a river was found to be acidic in the range of 3.5 – 4.5, on the banks of the river were several factories that were discharging effluents into the river. The effluents of which one of the following factories is the most likely cause for lowering the pH of river water?
    • A. 

      Soap and detergent factory

    • B. 

      Lead battery manufacturing factory

    • C. 

      Plastic cup manufacturing factory

    • D. 

      Alcohol distillery

  • 5. 
    Biologically, marriage should be avoided in between
    • A. 

      Rh+ male and Rh+ female

    • B. 

      Rh– female and Rh– male

    • C. 

      Rh+ female and Rh– male

    • D. 

      Rh+ male and Rh– female

  • 6. 
    . Human blood contains ________ percentage of plasma
    • A. 

      35%

    • B. 

      40%

    • C. 

      50%

    • D. 

      65%

  • 7. 
    . Unwanted sound creates noise pollution, and its unit is decibel (db). Prolonged exposure of noise level of how many db may gradually lead to permanent loss of hearing ability ?
    • A. 

      40 db

    • B. 

      60 db

    • C. 

      80 db

    • D. 

      100 db

  • 8. 
    When a person, after a certain degree of exertion, suffers from pain in the chest or below the collar bones, in the events of inadequate supply of oxygen to the heart muscles, he is said to suffer from
    • A. 

      Coronary thrombosis

    • B. 

      Myocardial infarction

    • C. 

      Angina pectoris

    • D. 

      Arteriosclerosis

  • 9. 
    Cow milk is a rich source of :
    • A. 

      Vitamin A

    • B. 

      Vitamin B

    • C. 

      Vitamin C

    • D. 

      Vitamin D

  • 10. 
    . A disorder which is linked to the Y chromosome in humans (holandric) will
    • A. 

      Only be expressed in males whose mothers were a carrier of the gene

    • B. 

      Never be passed from father to child

    • C. 

      Show a pattern of skipping generations in a family

    • D. 

      Be passed only from father to son

  • 11. 
    Cadmium has isotopes
    • A. 

      3

    • B. 

      5

    • C. 

      7

    • D. 

      9

  • 12. 
    If absolute temperature of a gas is doubled and the pressure is reduced to one half the volume of gas will
    • A. 

      Remain unchanged

    • B. 

      Increases four times

    • C. 

      Reduce to four times

    • D. 

      Be double

  • 13. 
    Hydrocarbons which generally have high molecular masses exist
    • A. 

      Solid form

    • B. 

      Liquid form

    • C. 

      Vapour form

    • D. 

      Gaseous form

  • 14. 
    The velocity of photon is
    • A. 

      Independent of its wavelength

    • B. 

      Depends on its wavelength

    • C. 

      Equal to square of its amplitude

    • D. 

      Depends on its source

  • 15. 
    Orbitals having same energy are called
    • A. 

      Hybrid orbitals

    • B. 

      Valence orbitals

    • C. 

      Degenerate orbitals

    • D. 

      D–orbitals

  • 16. 
    The nature of cathode rays remains the same irrespective of the material used for
    • A. 

      Gas

    • B. 

      Cathode

    • C. 

      Glass

    • D. 

      Electrode

  • 17. 
    Which of the hydrogen halides has the highest percentage of ionic character
    • A. 

      HF

    • B. 

      HBr

    • C. 

      HCl

    • D. 

      HI

  • 18. 
    The bond between H–H is
    • A. 

      Stronger than the bond between H–Cl

    • B. 

      Weaker than the bond between H–Cl

    • C. 

      Neither stronger nor weaker than the bond between H–Cl

    • D. 

      None of these

  • 19. 
    A substance under observation during an experiment
    • A. 

      Surrounding

    • B. 

      System

    • C. 

      State function

    • D. 

      Universe

  • 20. 
    PH of pure water is
    • A. 

      6

    • B. 

      7

    • C. 

      8

    • D. 

      9

  • 21. 
    Silicon is abundantly obtained from:
    • A. 

      Water

    • B. 

      Metal

    • C. 

      Sand

    • D. 

      Stones

  • 22. 
    In any measurement the significant figures are
    • A. 

      All accurately known and all doubtful digits

    • B. 

      Only accurately known digits

    • C. 

      Only doubtful digits

    • D. 

      All accurately known digits and the first doubtful digit

  • 23. 
    The direction of a vector in space is specified by:  
    • A. 

      One angle

    • B. 

      Two angle

    • C. 

      Three angle

    • D. 

      No angle

  • 24. 
    The direction of torque can be found by:
    • A. 

      Head to tail rule

    • B. 

      Right hand rule

    • C. 

      Left hand rule

    • D. 

      Fleming rule

  • 25. 
    If the slop of velocity-time graph gradually increases, then the body is said to be moving with:
    • A. 

      Positive acceleration

    • B. 

      Negative acceleration

    • C. 

      Uniform velocity

    • D. 

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