MCQ
Which of the following is not lewis base
  • A
    $N{H_3}$
  • B
    $P{H_3}$
  • C
    ${(C{H_3})_3}N$
  • $H{N_3}$

Answer

Correct option: D.
$H{N_3}$
(d)Hydrazoic acid $(H{N_3})$ is a Lewis acid.

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

The internal energy of a perfect gas is:
Two students performed the same experiment separately and each one of them recorded two readings of mass which are given below. Correct reading of mass is 3.0g. On the basis of given data, mark the correct option out of the following statements.
Student
Readings
 
(i)
(ii)
A
3.01
2.99
B
3.05
2.95
How many transition states and intermediates will be formed during the course of following reaction ?
$pH$ of water is $7$. When a substance $Y$ is dissolved in water, the $pH$ becomes $13$. The substance $Y$ is a salt of
What is the mass ratio of ethylene glycol $\left( C _2 H _6 O _2\right.$, molar mass $=62\,g / mol$ ) required for making $500\,g$ of $0.25\,molal$ aqueous solution and $250\,mL$ of $0.25\,molar$ aqueous solution ?
Which of the following ionic radius would be maximum
Given below are two statements: one is labelled as Assertion $(A)$ and the other is labelled as Reason $(R)$

Assertion $(A) :$ At $10^{\circ} C$, the density of a $5\, M$ solution of $KCl$ [atomic masses of $K$ and $Cl$ are $39$ and $35.5\, g \,mol ^{-1}$ ]. The solution is cooled to $-21^{\circ} C$. The molality of the solution will remain unchanged.

Reason $(R):$ The molality of a solution does not change with temperature as mass remains unaffected with temperature.

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

Match List $I$ with List $II$

List $I$ Element detected List $II$ Reagent used/Product formed
$A$ Nitrogen $I.$ $Na _2\left[ Fe ( CN )_5 NO \right]$
$B$ Sulphur $II.$ $AgNO _3$
$C$ Phosphorous $III.$ $Fe _4\left[ Fe ( CN )_6\right]_3$
$D$ Halogen $IV.$ $\left( NH _4\right)_2 MoO _4$

Choose the correct answer from the options given below:

What is the maximum wavelength in the Lyman series of $He^+$ ion ?
Which of the following is paramagnetic ?