MCQ
Correct acidic nature is
- ✓$HNO_3\, >\, H_3AsO_4\, >\, H_3PO_4$
- B$HOF\, >\, HOBr\, >\, HOCl\, >\, HOI$
- C$HClO_4\, >\, HBrO_4\, >\, HIO_4$
- D$N_2O\, >\, NO\, >\, N_2O_3$
✓
Answer
Correct option: A.
$HNO_3\, >\, H_3AsO_4\, >\, H_3PO_4$
a
The $S_6$ molecule has a chair-form hexagon ring with the same bond length as that in $S_8$, but with some what smaller bond angles i.e. bond lengths are same but bond angles are different
The $S_6$ molecule has a chair-form hexagon ring with the same bond length as that in $S_8$, but with some what smaller bond angles i.e. bond lengths are same but bond angles are different
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Match List-$I$ with the List-$II$
→|
List-$I$ Reaction |
List-$II$ Type of redox reaction |
| $(A)$ $\mathrm{N}_{2(\mathrm{~g})}+\mathrm{O}_{2(\mathrm{~g})} \rightarrow 2 \mathrm{NO}_{(\mathrm{g})}$ | $(I)$ Decomposition |
| $(B)$ $\begin{aligned} & 2 \mathrm{~Pb}\left(\mathrm{NO}_3\right)_{2(\mathrm{~s})} \rightarrow 2 \mathrm{PbO}_{(\mathrm{s})}+4 \mathrm{NO}_{2(\mathrm{~g})}+\mathrm{O}_{2(\mathrm{~g})}\end{aligned}$ | $(II)$ Displacement |
| $(C)$ $\begin{aligned} 2 \mathrm{Na}_{(\mathrm{s})}+2 \mathrm{H}_2 \mathrm{O}_{(\mathrm{l})} \rightarrow 2 \mathrm{NaOH}_{(\mathrm{aq} .)}+\mathrm{H}_{2(\mathrm{~g})}\end{aligned}$ | $(III)$ Disproportionation |
| $(D)$ $\begin{aligned} 2 \mathrm{NO}_{2(\mathrm{~g})}+2-\mathrm{OH}_{(\mathrm{aq})} \rightarrow \mathrm{NO}_{2(\mathrm{aq} .)}^{-}+\mathrm{NO}_{3(\mathrm{qq} .)}^{-}+\mathrm{H}_2 \mathrm{O}_{(\mathrm{l})}\end{aligned}$ | $(IV)$ Combination |
Choose the correct answer from the options given below:
Which will not give acetamide on reaction with ammonia
Oxyacid of chloride show similarity in
The first ionization energy for Li is $5.4 \,eV $ and electron affinity of $Cl$ is $3.61\,eV.$ The $\Delta H$ (in $kJ/mol$) for the reaction $Li(g) + Cl(g) \to L{i^ + } + C{l^ - }$ is (if resulting ions do not combine with each other) $(1\,eV = 1.6 \times {10^{ - 19}}\,J)$
→Match List $I$ with List $II$. Choose the correct answer from the options given below:
→| List $-I$ | List $-II$ |
|
$A.$ Melting point $[\mathrm{K}]$ |
$I.$ $\mathrm{Tl}>\mathrm{In}>\mathrm{Ga}>\mathrm{Al}>\mathrm{B}$ |
|
$B.$ Ionic Radius $\left[\mathrm{M}^{+3} / \mathrm{pm}\right]$ |
$II.$ $\mathrm{B}>\mathrm{Tl}>\mathrm{Al} \approx \mathrm{Ga}>\mathrm{In}$ |
| $C.$ $\Delta_{\mathrm{i}} \mathrm{H}_1 $ $ [\mathrm{~kJ} \mathrm{~mol}^{-1}]$ | $III.$ $\mathrm{Tl}>\mathrm{In}>\mathrm{Al}>\mathrm{Ga}>\mathrm{B}$ |
| $D.$ Atomic Radius $[pm]$ | $IV.$ $\mathrm{B}>\mathrm{Al}>\mathrm{Tl}>\mathrm{In}>\mathrm{Ga}$ |
Boiling point of equimolar ideal solution of hexane, $C_6H_{14}$ and heptane , $C_7H_{16}$ is $80\,^o C$. What is the boiling point of mixture of hexane and heptane containing equal mass of both. Boiling points of hexane and heptane are $69\,^o C\ \&\ 98\,^o C$ respectively -
→The tests performed on compound $X$ and their inferences are
→| Test | Interference |
| $(a)$ $2, 4-DNP$ test | Colorued precipitate |
| $(b)$ Iodoform test | Yellow precipitate |
| $(c)$ Azo-dye test | No dye formation |
Compound $‘X’$ is
The one which has the highest value of $pH$ is
→If $K_{sp}$ of $Ag_2CO_3$ is $8 \times10^{-12},$ the molar solubility of $Ag_2CO_3$ in $0.1\,M\,AgNO_3$ is
→Assertion : $2, 2-$ Dimethylpropanal undergoes Cannizzaro reaction with conc. $NaOH$.
Reason : Cannizzaro reaction is a disproportionation reaction
→Reason : Cannizzaro reaction is a disproportionation reaction