Q7 / 160 · AP EAMCET 2020 (21 Sep Shift 2) · Chemistry

A metallic solid undergoes Frenkel defect. Its original mass, volume and density are \(M_0, V_0\) and \(D_0\) respectively. After Frenkel defect the mass, volume and density are \(M, V\) and \(D\) respectively. The variations of \(M, V\) and \(D\) after Frenkel defect are

  • Correct answer
    A
    \(M=M_0, V=V_0, D=D_0\)
  • B
    \(M < M_0, V < V_0, D < D_0\)
  • C
    \(M>M_0, V=V_0, D>D_0\)
  • D
    \(M=M_0, V < V_0, D>D_0\)

Solution

In Frenkel defect, atoms remain within the solid crystal. Only one vacancy is created. Density remains the same. Thus, \(M=M_0, V=V_0\) and \(D=D_0\). Hence, the correct option is (a).

Hence, the correct answer is option: 'A'.

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