For 1^ st law of thermodynamics, select the correct option.

MCQ

For $1^{st}$ law of thermodynamics, select the correct option.

A
The energy of a closed system is constant
✓
$1^{st}$ law is commonly started as the law ofconservation of energy i.e., energy canneither be created nor be destroyed.
C
It is applicable only for reversible process.
D
Both $(1)$ & $(2)$

✓

Answer

Correct option: B.

$1^{st}$ law is commonly started as the law ofconservation of energy i.e., energy canneither be created nor be destroyed.

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$S{O_2}C{l_2}(g) \rightleftharpoons S{O_2}(g) + C{l_2}(g)$

$CO(g) + C{l_2}(g) \rightleftharpoons COC{l_2}(g)$

on adding more $SO_2$ at equilibrium what will happen?

$(A)$ The principal quantum number $'n'$ is a positive integer with values of $'n'=1,2,3, \ldots$.

$(B)$ The azimuthal quantum number $'l'$ for a given $'n'$ (principal quantum number) can have values as $'l'=0,1,2, \ldots n$

$(C)$ Magnetic orbital quantum number $'m _{l}'$ for a particular $'l'$ (azimuthal quantum number) has $(2 l$ + 1) values.

$(D)$ $\pm 1 / 2$ are the two possible orientations of electron spin.

$(E)$ For $l=5$, there will be a total of $9$ orbital.

Which of the above statements are correct?

Which conformer of above compound is most stable across $C_2 - C_3$ ?