General Organic Chemistry

The volume of 1 M aqueous $\ce{H2SO4}$ required to completely neutralize the ammonia evolved from 5.72 g of L in Kjeldahl's method of nitrogen estimation is ____ mL.

In sulphur estimation by Carius method, the amount of $\ce{BaSO4}$ formed from 3.79 g of M is ____ g.

Given below are two statements :

Statement (I) : 1,2,3-Trihydroxypropane can be separated from water by simple distillation.

Statement (II) : An azeotropic mixture cannot be separated by fractional distillation.

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

Given below are two statements :

Statement (I) : Benzyl chloride reacts faster in $\mathrm S_\mathrm N1$ mechanism than ethyl chloride.

Statement (II) : Ethyl carbocation intermediate is less stabilized by hyperconjugation than benzyl carbocation by resonance.

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

In IUPAC nomenclature, the correct order of decreasing priority of functional group is :

Consider the three aromatic molecules (P, Q and R) whose structures have been given below :

The correct order regarding the reactivity of these compounds with $\ce{Ph-\overset{(+)}{N}#N\,Cl^{(-)}}$ under optimum but slightly acidic medium is :

Complete combustion of X g of an organic compound gave 0.25 g of $\ce{CO2}$ and 0.12 g of $\ce{H2O}$. If the % of carbon is 25% and of hydrogen is 4.89%, then X = ________ $\times10^{-3}$ g. (Nearest integer)
(Molar mass of C, H and O are 12, 1 and 16 g mol$^{-1}$ respectively.)

Given below are two statements :

Statement I : In $\ce{O2N-C6H4-\overset{\oplus}{C}H-C6H4-OCH3}$ (both rings para-substituted), the carbocation is stabilised by +R effect of $\ce{-OCH3}$ group.

Statement II : In $\ce{O2N-C6H4-\overset{\ominus}{C}H-C6H4-OCH3}$, the carbanion is stabilised by −R effect of $\ce{-NO2}$ group.

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

Consider the following reactions sequence

When the product (P) is subjected to Carius analysis using $\ce{AgNO3}$, 1.0 g of the product (P) will produce ________ g of the precipitate of AgBr. (Nearest Integer)
(Given : molar mass in g mol$^{-1}$ C : 12, H : 1, O : 16, N : 14, Br : 80, Ag : 108)

Increasing order of electron withdrawing power of following functional groups is:

a. −CN

b. −COOH

c. $\ce{-NO2}$

d. −I

Amongst the following, the total number of compounds soluble in aqueous NaOH at room temperature is:

2.0 g of a bromo hydrocarbon (X) was subjected to Carius analysis, gave 3.36 g of AgBr. The percentage of carbon in the compound (X) is 26.7%. Total number of carbon atoms in the empirical formula for compound (X) is ________.
(Given molar mass in g mol$^{-1}$ H:1, C:12, Br : 80, Ag : 108)

Match the LIST-I with LIST-II

Choose the correct answer from the options given below:

Consider the following molecules/species:

(x) tropone, (y) acetone, (z) acetate ion

The correct order of carbon - oxygen double bond length is :

The descending order of acidity among the following compounds is:

Choose the correct answer from the options given below:

The strongest conjugate acid will result from:

In sulphur estimation, $2.0\times10^{-3}$ mol of an organic compound (X) (molar mass 76 g mol$^{-1}$) gave 0.4813 g of barium sulphate (molar mass 233 g mol$^{-1}$). The percentage of sulphur in the compound (X) is ________ $\times10^{-1}$ % (Nearest integer)

Given below are two statements:

Statement I: On the basis of inductive effect, the order of stability of alkyl carbanions is $\ce{CH3-}>\ce{CH3-CH2-}>\ce{(CH3)2CH-}>\ce{(CH3)3C-}$.

Statement II: Allyl and benzyl carbanions are more stabilised by inductive effect and not by resonance effect.

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

For the following Friedel Craft's alkylation reaction, which of the statements are correct?

A. Major product is n-propyl benzene.

B. iso-propyl carbocation intermediate is also generated.

C. Multiple substitution is inevitable.

D. Introducing electron-donating substituent on benzene will not produce any alkyl benzene.

Choose the correct answer from the options given below:

In an estimation of sulphur by Carius method 0.2 g of the substance gave 0.6 g of $\ce{BaSO4}$. The percentage of sulphur in the substance is ________%.

(Given molar mass in g mol$^{-1}$ S : 32, $\ce{BaSO4}$ : 231)