MCQ
The false statement regarding alkane is:
- AThis does not perform polymerization reaction.
- BThis does not gives elimination reaction.
- CIt does not disappear the colour of dilute KMnO4 solution.
- DIt does not decolourise bromine water.
✓
Answer
- This does not gives elimination reaction.
Explanation:
Alkanes show elimination reactions. Higher alkanes eliminate hydrogen and give lower alkanes and alkenes on heating in the absence of air at high temperatures.
R−CH2−CH3 → R−CH=CH2
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
The vapour pressure will be lowest for
$\mathrm{r}=\mathrm{k}[\mathrm{A}]$ for a reaction, $50 \%$ of $\mathrm{A}$ is decomposed in$120$ minutes. The time taken for $90 \%$ decomposition of $\mathrm{A}$ is............. minutes.
→Which of the following will produce the maximum depression in freezing point of its aqueous solution
Given below are two statements: one is labelled as Assertion $(A)$ : and the other is labelled as Reason $(R)$. Assertion $(A)$ : Both rhombic and monoclinic sulphur exist as $S_5$ while oxygen exists as $O_2$.
→Reason $(R)$ : Oxygen forms $\mathrm{p} \pi-\mathrm{p} \pi$ multiple bonds with itself and other elements having small size and high electronegativity like $\mathrm{C}, \mathrm{N}$, which is not possible for sulphur.
In the light of the above statements, choose the most appropriate answer from the options given below :
A mixture of benzaldehyde and formaldehyde on heating with concen. and hot NaOH gives :
With respect to the following reaction, consider the given statements :
→$[Image]$
$(A)$ $o-$Nitroaniline and $p-$nitroaniline are the predominant products
$(B)$ $p-$Nitroaniline and $m-$nitroaniline are the predominant products
$(C)$ $HNO _{3}$ acts as an acid
$(D)$ $H _{2} SO _{4}$ acts as an acid
Compound $PdCl_4 .6H_2O$ is a hydrated complex; $1\, molal$ aqueous solution of it has freezing point $269.28\, K$. Assuming $100\%$ ionization of complex, calculate the molecular formula of the complex ($K_f$ for water $= 1.86\, K\, kg\, mol^{-1}$)
→$t _{87.5}$ is the time required for the reaction to undergo $87.5 \%$ completion and $t_{50}$ is the time required for the reaction to undergo $50 \%$ completion. The relation between $t_{87.5}$ and $t_{50}$ for a first order reaction is $t _{87.5}= x \times t _{50}$ The value of $x$ is $......$. (Nearest integer)
→$\operatorname{Zr}\,(\mathrm{Z}=40)$ and $\mathrm{Hf}\,(\mathrm{Z}=72)$ have similar atomic and ionic radii because of :
→The rate of reaction is tripled for $10^o$ rise in temperature. The increase in the reaction rate if temperature is increased by $60^o$ is ............ $ times$
→