Download App

9. Amines — Chemistry STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 ScienceChemistry9. Amines1 Mark
MCQ
Amines are basic in nature because:
  • A
    They produce $OH^-$ ions when treated with water
  • B
    They have replaceable $H$ atoms on $N$ atoms
  • ✓
    They have lone pair of electron on $N$ atom
  • D
    None of these
✓

Answer

Correct option: C.
They have lone pair of electron on $N$ atom
c

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

Explore more

More "M.C.Q (1 Marks)" from 9. Amines→9. Amines — all question types→Chemistry STD 12 Science question papers→CBSE Board STD 12 Science question papers→CBSE Board question paper generator→

Similar questions

If the enolate ion combines with carbonyl group of ester, we get
→
In esterification, $O{H^ - }$ ion for making ${H_2}O$ comes from
→
Among the following which one does not act as an intermediate in Hofmann rearrangement
→
The complexes $[Co{(N{H_3})_6}]\,[Cr{({C_2}{O_4})_3}]$ and $[Cr{(N{H_3})_6}]\,\,[Co{({C_2}{O_4})_3}]$
→
Which of the following are antidepressants?
$a.$ Iproniazid.
$b.$ Phenelzine.
$c.$ Equanil.
$d.$ all the above
→
A chemist has $4$ samples of artificial sweetner $A$. $\mathrm{B}, \mathrm{C}$ and $\mathrm{D}$. To identify these samples, he performed certain experiments and noted the following observations :

$(i)$ $A$ and $D$ both form blue-violet colour with ninhydrin.

$(ii)$ Lassaigne extract of $\mathrm{C}$ give  positive $\mathrm{AgNO}_{3}$ test and negative $\mathrm{Fe}_{4}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]_{3}$ test.

$(iii)$ Lassaigne extract of $\mathrm{B}$ and D gives positive sodium nitroprusside test

Based on these observations which option is correct ?

→
How much oxygen is dissolved in $100\ rnL$ water at $298K$ if partial pressure of oxygen is $\text{0.5 atm}$ and $K = 1.4 \times 10^{-3} mol / L / \text{atm}?$
→
Among the four compounds $(i)$ acetone$, (ii)$ propanol$, (iiii)$ methyl acetate and $(iv)$ propionic acid, the two that are isomeric are:
→
Which of the following statements are correct about $\mathrm{Zn}, \mathrm{Cd}$ and $\mathrm{Hg}$ ?

$A$. They exhibit high enthalpy of atomization as the d-subshell is full.

$B$. $\mathrm{Zn}$ and $\mathrm{Cd}$ do not show variable oxidation state while $\mathrm{Hg}$ shows $+\mathrm{I}$ and + $II.$

$C$. Compounds of $\mathrm{Zn}, \mathrm{Cd}$ and $\mathrm{Hg}$ are paramagnetic in nature.

$D$. $\mathrm{Zn}, \mathrm{Cd}$ and $\mathrm{Hg}$ are called soft metals.

Choose the most appropriate from the options given below:

→
Heavy water freezes at ......... $^oC$.
→