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{:(1.,"Infrasonic",-,(a),"Compressions")...

`{:(1.,"Infrasonic",-,(a),"Compressions"),(2.,"Echo",-,(b),22kHz),(3.,"Ultrasonic",-,(c),10Hz),(4.,"High pressure region",-,(d),"Ultrasonography"):}`

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1. (c) 10HZ 2. (d) Ultrasonography 3.(b) 22kHZ 4. (a) Compressions
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{:(1.,"Ethene",(a),C_(3)H_(4)),(2.,"Ethane",(b),C_(3)H_(6)),(3.,"Propyne",(c),C_(2)H_(4)),(4.,"Propene",(d),C_(2)H_(6)):}

{:("Waves",,"Range"),((i)"Audible",-,(a)340ms^(-1)),((ii)"Sound",-,(b)"greater then "20kHz),((iii)"Infrasonic",-,(c)20-20 kHZ),((iv)"Light",-,(d)"below" 20 Hz),((v)"Ultrasonic",-,(e)3xx10^(8)ms^(-1)):}

Knowledge Check

  • Match List - I with List II {:("List I","ListII"),("i"." " {(1,1) (2,2)(3,3)(1,2)},(b) " ""equivalence"),("ii"." " {(1,2) (2,1)(2,3)(3,2)},(b)" " "transitive"),("iii"." " {(1,1) (2,3)(1,3)},(c) " ""Symmetric"),("iv."" " {(1,1) (2,2)(3,3)(1,2)(2,1)(2,3)(1,3)},(d) " " "reflexive"):}

    A
    c d b a
    B
    d c b a
    C
    b a d c
    D
    b a b c

  • Let X={1,2,3,4},Y={a,b,c,d} and f={(1,a),(4,b),(2,c),(3,d),(2,d)} . Then f is

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    B
    an onto function
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    D
    not a function

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