MCQ
Which of the following solutions are acidic?
- A$\mathrm{CuSO}_4$
- B$\mathrm{CH}_3 \mathrm{COONH}_4$
- ✓$\mathrm{AlCl}_3$
- D$\mathrm{Na}_2 \mathrm{CO}_3$
✓
Answer
Correct option: C.
$\mathrm{AlCl}_3$
$(a)$ and $(c)$ are acidic.
Because they are salts of strong acid $\mathrm{H}_2 \mathrm{SO}_4$ and $\text{HCl}$ and weak bases $\mathrm{Cu}(\mathrm{OH})_2$ and $\mathrm{Al}(\mathrm{OH})_2$ respectively.
Because they are salts of strong acid $\mathrm{H}_2 \mathrm{SO}_4$ and $\text{HCl}$ and weak bases $\mathrm{Cu}(\mathrm{OH})_2$ and $\mathrm{Al}(\mathrm{OH})_2$ respectively.
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
Which of the following is the most stable alkene
The ratio of the mass percentages of $'C$ $\&$ $H'$ and $'C$ $\&$ $O'$ of a saturated acyclic organic compound$'X'$ are $4 : 1$ and $3 : 4$ respectively. Then, the moles of oxygen gas required for complete combustion of two moles of organic compound $'X$' is
→Which element has maximum electron affinity
$40^{\circ}$ of $HI$ undergoes decomposition to $H _{2}$ and $I _{2}$ at $300\, K . \Delta G ^{\ominus}$ for this decompostion reaction at one atmosphere pressure is $...\,J\, mol ^{-1} \cdot$ [nearest integer]
→(Use $R =8.31\, J\, K ^{-1}\, mol ^{-1} ; \log 2=0.3010$. In $10=$ $2.3, \log 3=0.477$ )
The correct shape and $I-I-I$ bond angles respectively in $I _{3}^{-}$ ion are :-
→Select the compound from the following which dissolves in water
The decreasing order of hydride affinity for following carbocations is:
Choose the correct answer from the options given below:
Which one is a wrong statement ?
A sample of $\mathrm{CaCO}_3$ and $\mathrm{MgCO}_3$ weighed $2.21 \mathrm{~g}$ is ignited to constant weight of $1.152 \mathrm{~g}$. The composition of mix ture is :
→(Given molar mass in $\mathrm{g} \mathrm{mol}^{-1}{CaCO}_3: 100, \mathrm{MgCO}_3: 84)$
Match list $I$ with list $II$ and select the correct answer
→| List $-I$ (Molecule / Species) | List $-II$ |
| $(P)$ $NO_2$ (Unpaired electron in) | $(1)$ Vacant $p-$ orbital involved in hybridization |
| $(Q)$ $B_2H_6$ | $(2)$ $sp^2-$ orbital |
| $(R)$ $ClO_3$ (Unpaired electron in) | $(3)$ $sp^3-$orbital |
| $(S)$ $CH_3^+$ | $(4)$ $120^o$ Bond angle |