Answer the question on the basis of passage given below :
There are three kinds of amines which are primary, secondary and tertiary amines. These amines may have alkyl group or aryl group or both alkyl and aryl groups. These amines can be distinguished from one another by various chemical tests.
An amine A on treatment with benzene sulphonyl chloride gives a compound B which easily dissolves in an alkali : then A is :

Catalytic hydrogenation of ketones with lithium aluminium hydride gives

The increasing order of acidity of the following compounds based on pKa values is:
(A) \(BrCH _2 COOH\)
(B) \(CICH _2 COOH\)
(C) \(FCH _2 COOH\)
(D) \(HCOOH\)

The only carboxylic acid which gives positive Tollen's test is

Amines are reactive in nature, mainly due to difference in electronegativity between Nitrogen and Hydrogen and, due to lone pair of electrons on Nitrogen. Amines behave like nucleophiles and as good lewis bases and there are various reactions to support this. Different degree of amines differ in their reactivity due to steric hinderance and electronic effects. Aromatic amines are less basic due to + R effect,
hence have higher pkb value than aliphatic amines. Basic strength of amines also depends on stability of corresponding conjugate acid in aqueous medium.
'A' compound is treated with Hinsenberg's reagent, subsequent additiom of alkali to it gives a clear solution. Compound ' A ' is:

In amines, the nitrogen atom is A and B hybridised, making geometry of amines as C. Then A, B and C respectively are:

"Arrange the following in order of increasing boiling points
(A) 1,4-Dichlorobenzene
(B) 1,3-Dichlorobenzene
(C) 1,2-Dichlorobenzene
(D) Chlorobenzene
Choose the correct answer from the options given below:"

Answer the question on basis of passage given below :
Look at the following chemical reactions and answer the following question :
(A) \(C_7H_8 \xrightarrow{\text{Conc. HNO}_3, 0^\circ C} (B) \xrightarrow{Sn/HCl} (C) \xrightarrow{NaNO_2/H_3O^+} (D) \xrightarrow{H_2O, Heat} (E)\)
(E) \(CH_3I \xrightarrow{KMnO_4/H^+} (F) \xrightarrow{H_3O^+} (G) \xrightarrow{NaOH} (H)\)
Which one of the following compounds is/are most acidic in nature?

The force between two small charged spheres having charges of \( 2 \times 10^{-7} \, \text{C} \) and \( 3 \times 10^{-7} \, \text{C} \), respectively, placed 30 cm apart in air would be.

A conductor is placed along z-axis carrying current in z direction in uniform magnetic field directed along y-axis. The magnetic force acting on the conductor is directed along:

Read the passage carefully and answer:
Organic compounds derived from NH3 by replacing one or more H-atoms with alkyl or aryl groups will form primary, secondary and tertiary amines. The common methods which include their preparations are reduction of nitro group, amide group and nitrile group, Gabriel phthalimide synthesis and ammonolysis of alkyl halides. Amines are basic in nature due to the presence of a lone pair of electrons on the nitrogen atom. Important chemical properties of amines include acylation, alkylation and their interaction with nitrous acid. There are various tests which can distinguish different types of amines from each other, for e.g. carbylamine test, Hinsberg's test, coupling reaction etc. Another important class of compounds which can be derived from primary amines is azo compounds. These compounds are intensely colored and widely used as dyes in textile, leather and food industries.
The final product of the following reaction is:
\(C _6 H _5 NH _2 \xrightarrow[\text { (iii) } NaNO _2 / Cu , \Delta]{\text { (i) } HNO _2}\) (ii) \(HBF _4\) ?

A bar magnet with pole strength m and magnetic dipole moment p is cut into two identical pieces along its length.
Then for each of the two pieces

Value of \(\int \frac{2}{(x-3) \sqrt{x+1}} d x\) is : (Here \(C\) is an arbitrary constant)