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NDA Exam I 2016: Sample Question Set 2- Science

Mar 22, 2016 10:48 IST

    NDA Exam I 2016 – 17th April 2016

    1.  Which one is not the form of Biocides?
    Ans: D

    2.  What is Rodenticide?
    A.A medicine to kill worms
    B.A medicine to kill animals
    C.A lubricant
    D.A pesticide
    Ans: D

    3.  Most commonly used Rodenticides are _______ in nature.
    A.Anti pesticides
    B.Anti solvent
    C.Anti Coagulant
    D.Non anti coagulant
    Ans: C

    4. Which of the following statement is not correct?
    A.Atomic radius of the elements increases as one move down the first group of the periodic table.
    B.Atomic radius of the elements decreases as one move across from left to right in the 2nd period of the periodic table.
    C.Amongst isoelectronic species, smaller the positive charge on the cation, smaller is the ionic radius.
    D.Amongst isoelectronic species, greater the negative charge on the anion, larger is the ionic radius.
     Ans: C

    5. Natural rubber is a ________ having high elasticity.
    D.Chemical using carbon as main compound
    Ans: C

    6. How will you define the process of Vulcanization?
    A.Sample of butane mixed with sulphur and litharge
    B.Sample of propane mixed with sulphur and litharge
    C.Sample of plastic formed carbon mixed with sulphur and litharge
    D.Sample of rubber mixed with sulphur and litharge
    Ans: D

    7. What is NBR?
    A.Normal Acrylonitrile-butadiene rubber
    B.Natural Acrylonitrile-butadiene rubber
    C.N Acrylonitrile-butane rubber
    D.N Acrylonitrile-butadiene rubber
    Ans: D

    8. Which of the following is the acronym of PVC?
    A.polyvinyl chloride
    B.polyvinyl carbobate
    C.phosphor vanadiu chloride
    D.phosphavinyl chloride
    Ans: A

    9. In which form the natural petroleum is found?
    C.Crude Oil
    Ans: C

    10. In which field petroleum is not used?
    B.Petro Chemical
    Ans: D

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