- AChromic chloride
- ✓Chromyl chloride
- CChromous chloride
- DNone of these
${K_2}S{O_4} + 2N{a_2}S{O_4} + \mathop {2Cr{O_2}C{l_2} + 3{H_2}O}\limits_{{\rm{Chromyl chloride}}\,\,\,\,\,\,\,\,\,\,\,} $
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Reason : $PbCl_4$ is powerful oxidising agent.
$1.$ The state $S_1$ is
$(A)$ $1 \mathrm{~s}$ $(B)$ $2 \mathrm{~s}$ $(C)$ $2 \mathrm{p}$ $(D)$ $3 \mathrm{~s}$
$2.$ Energy of the state $S_1$ in units of the hydrogen atom ground state energy is
$(A)$ $0.75$ $(B)$ $1.50$ $(C)$ $2.25$ $(D)$ $4.50$
$3.$ The orbital angular momentum quantum number of the state $S_2$ is
$(A)$ $0$ $(B)$ $1$ $(C)$ $2$ $(D)$ $3$
Give the answer question $1,2$ and $3.$
Assertion $A$: Alcohols react both as nucleophiles and electrophiles.
Reason $R$: Alcohols react with active metals such as sodium, potassium and aluminum to yield corresponding alkoxides and liberate hydrogen.
In the light of the above statements, choose the correct answer from the options given below:
| List $-I$ (Compounds) | List $-II$ (used in) | ||
| $(A)$ | $BaSO_4 +ZnS$ | $(1)$ | Explosive |
| $(B)$ | $NI_3$ | $(2)$ | Oxidiser in rocket propellants |
| $(C)$ | $N_2O_4$ | $(3)$ | Space capsule |
| $(D)$ | $KO_2$ | $(4)$ | Pigment |
