NEET Sample Paper NEET Sample Test Paper-72

  • question_answer
    Arrange the following in the order of decreasing mass
    (i) IF atom                    
    (ii) IN atom
    (iii) 1 0 atoms                
    (iv) 1 H atom

    A) \[\left( i \right)>\left( iii \right)>\left( iv \right)>\left( ii \right)\]

    B) \[\left( iv \right)<\left( ii \right)<\left( iii \right)<\left( i \right)\]

    C) \[\left( i \right) > \left( iii \right) > \left( ii \right) > \left( iv \right)\]

    D) \[\left( iii \right)>\left( i \right)>\left( ii \right)>\left( iv \right)\]

    Correct Answer: C

    Solution :

    Mass of \[1 F atom =\frac{19}{6.023\times {{10}^{23}}}\] (since At. wt. of \[F=19\]) \[\operatorname{Mass} of 1 N atom =\frac{14}{6.023\times {{10}^{13}}}\] \[\operatorname{Mass} of 1 H atom =\frac{1}{6.023\times {{10}^{23}}}\] \[\operatorname{Mass} of 1 O atom =\frac{16}{6.023\times {{10}^{23}}}\] \[\operatorname{i} > iii > ii > iv\]


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