MCQ
Heisenberg uncertainty principle is not valid for :
- AMoving electrons
- BMotor car
- CStationary particles
- ✓Both $(b)$ and $(c)$
Heisenberg's uncertainty principle is not valid for macroscopic objects and objects at rest. It is applicable for moving microscopic particles.
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$(I)$ $\begin{array}{*{20}{c}}
{O\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,O} \\
{||\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,||} \\
{C{H_3} - C - C{H_2} - C - C{H_3}}
\end{array}$
$(II)$ $\begin{array}{*{20}{c}}
O \\
{||} \\
{C{H_3} - C - C{H_3}}
\end{array}$
$(III)$ $CH \equiv CH$
$(IV)$ $CH_3-CHO$
Select correct answer from the codes given below :
Codes :

| Column $-I$ | Column $-II$ |
| (Atomic number) | (Position of element in Periodic table) |
| $(A)$ $Z = 37$ | $(P)$ $p-$ block |
| $(B)$ $Z = 42$ | $(Q)$ $f-$ block |
| $(C)$ $Z = 34$ | $(R)$ $d-$ block |
| $(D)$ $Z = 92$ | $(S)$ $s-$ block |