MCQ
Which one is lewis acid ?
  • A
    $NH_3$
  • B
    $CH_3CH_2CH_3$
  • C
    $H_2O$
  • $AlCl_3$

Answer

Correct option: D.
$AlCl_3$
d
In $AlCl_3$ , central atom has incomplete octet

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

Consider the reaction : ${N_2} + 3{H_2} \to 2N{H_3}$ carried out at constant temperature and pressure. If $\Delta H$ and $\Delta U$ are the enthalpy and internal energy changes for the reaction, which of the following expression is true
Who was the first scientist to propose a model for the structure of an atom?
The unit of the van der Waals gas equation parameter $'a'$ in $\left(\mathrm{P}+\frac{\mathrm{an}^{2}}{\mathrm{~V}^{2}}\right)(\mathrm{V}-\mathrm{nb})=\mathrm{n} \mathrm{RT}$ is :
Given below are two statements: one is labelled as Assertion $(A)$ and the other is labelled as Reason $(R)$.

Assertion $(A)$ : $\mathrm{NH}_3$ and $\mathrm{NF}_3$ molecule have pyramidal shape with a lone pair of electrons on nitrogen atom. The resultant dipole moment of $\mathrm{NH}_3$ is greater than that of $\mathrm{NF}_3$.

Reason $(R)$ : In $\mathrm{NH}_3$, the orbital dipole due to lone pair is in the same direction as the resultant dipole moment of the $\mathrm{N}-\mathrm{H}$ bonds. $\mathrm{F}$ is the most electronegative element.

In the light of the above statements, choose the correct answer from the options given below:

The solubility product of $Hg_2I_2$ is equal to
To neutralise $20\, ml $ of $M/10$ sodium hydroxide, the volume of $M/20$ hydrochloric acid required is .............. $\mathrm{ml}$
Which of the following kinds of isomerism can nitroethane exhibit ?
Which of the following arrangements shows the correct order of decreasing paramagnetism?
At $400\,K, 1\, mol$ of a hydrocarbon completely burned. It gives $132\, g$ of a gas along with $72\, g$ of water vapour then hydrocarbon may be
On heating, some solid substances change from solid to vapour state without passing through liquid state. The technique used for the purification of such solid substances based on the above principle is known as