MHT-CET

Structure of Atom question bank (Chemistry)

Practice 138 free MHT-CET Chemistry - Structure of Atom questions with answers and step-by-step solutions.

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Q1.

Uncertainty in the position of an electron (mass $=9.1 \times 10^{-31} \mathrm{~kg}$ ) moving with a velocity $300 \mathrm{~ms}^{-1}$ accurate upon $0.001 \%$ will be $\left(h=6.63 \times 10^{-34} \mathrm{~J}-\mathrm{s}\right)$

(A)

$19.2 \times 10^{-2} \mathrm{~m}$

(B)

$5.76 \times 10^{-2} \mathrm{~m}$

(C)

$1.92 \times 10^{-2} \mathrm{~m}$

(D)

$3.84 \times 10^{-2} \mathrm{~m}$

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Q2.

What is spin only magnetic moment of an element having one unpaired electron?

(A)

$0.34 \mathrm{BM}$

(B)

$1.0 \mathrm{BM}$

(C)

$1.73 \mathrm{BM}$

(D)

$3.1 \mathrm{BM}$

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