Organic chemistry-some basic principles and techniques practice · Mixed difficulty

The $- I$ effect is shown by :

Which of the following molecules contain asymmetric carbon atom?

Anthracene is purified by:

Assertion (A): Pyrrole, is aromatic and undergoes electrophilic aromatic substitution extremely readily and predominant by at position adjacent to nitrogen.

Reason (R): Nitrogen in the ring bearing a lone pair in conjugation with $\pi$-electrons brings aromaticity to the pyrrole.

Example of chain isomerism are

The maximum bond energy is present

The IUPAC suffix name of $- COX$ is:

Which of the following molecules represents the order of hybridization $S{P^2},\,\,S{P^2},\,\,SP,\,\,\,SP$ from left to right atoms.

The energy difference between the chair and boat form of cyclohexane is :

The number of asymmetric $\mathrm{C}$-atom created and number of possible stereoisomers when benzil $(\mathrm{Ph} \mathrm{COCO} \mathrm{Ph})$ is reduced with $\mathrm{LiAlH}_4$.

Assertion (A): Simple distillation can help in separating a mixture of propan-1-ol (boiling point $97^{\circ} \mathrm{C})$ and propanone (boiling point $56^{\circ} \mathrm{C}).$
Reason (R): Liquids with a difference of more than $20^{\circ} \mathrm{C}$ in their boiling points can be separated by simple distillation.

The correct decreasing order of acidic strength
of (A) trichloroacetic acid, (B) trifluoroacetic acid, (C) acetic acid, (D) formic acid is

Identify, which of the below does not possess any element of symmetry?

Out of following which is not property of homologous series

Detection of sulphur in sodium extract is done by

Compound that will give positive Lassaigne's test for both nitrogen and halogen is

But-2-yne is reacted separately with one mole of Hydrogen as shown below
$\underline B \xleftarrow[{{\text{liq }}N{H_3}}]{{Na}}C{H_3} - \mathop C\limits_{ + {H_2}} \equiv C - C{H_3}\xrightarrow[\Delta ]{{Pd/C}}\underline A$
(A) A is more than soluble than B.
(B) The boiling point & melting point of A are higher and lower than B respectively.
(C) A is more polar than B because dipole moment of A is zero.
(D) $Br_2$ adds easily to B than A.
Identify the incorrect statements from the option given below

Which of the following is not a preliminary test used to detect ions?

Statement I : A tertiary carbocation is more stable than a secondary carbocation which is more stable than a primary carbocation
Statement II : The inductive effects operate through sigma bonds and decrease rapidly with increase in distance between the substituent and the reaction site

The production of an optically active compound from a symmetric molecule without resolution in termed as :

Arrange the Anions $(\mathrm{p}). {CH}_3, \, \, (\mathrm{q}). {NH}_2, \, \, (\mathrm{r}). {OH}, \, \, (\mathrm{s}). {F}^{-}$ in decreasing order of their basic strength

Which of the following sodium compound/compounds are formed when an organic compound containing both nitrogen and sulphur is fused with sodium?

Incorrect statement for the use of indicators in acid-base titration is :

The number of $s{p^2}$ hybridized carbon atoms present in ‘Aspartame’ are

Which of the following would be the best (most reactive) nucleophile in the polar medium?

Which of the following statement(s) is/are correct ?

(i) A carbon atom having an $s p$ hybrid orbital is less electronegative than carbon atoms possessing $s p^2$ or $s p^3$ hybridised orbitals.

(ii) $\pi$-bonds provide the most reactive centres in the molecules containing multiple bonds

(iii) The number of $\sigma$ and $\pi$ bonds in compound ${CH}_2={C}={CHCH}_3$ are 7 and 2 respectively.

Arrange the following free radicals in order of decreasing stability.

Methyl (I), Vinyl (II), Allyl (III), Benzyl (IV)

Isomerism exhibited by acetic acid and methyl formate is :

Which one of the following does not have $s p^2$-hybridized carbon?

Which method is used to separate sugars?