Which species is involved in chlorination of benzene using \(Cl_{2}\) in presence of \(AlCl_{3}\)?

Arrange the following amines in increasing order of basic strength in gaseous phase
(A) \(\left(\mathrm{CH}_3\right)_3 \mathrm{~N}\)
(B) \(\mathrm{CH}_3 \mathrm{NH}_2\)
(C) \(\mathrm{C}_6 \mathrm{H}_5 \mathrm{NH}_2\)
(D) \(\mathrm{C}_6 \mathrm{H}_5 \mathrm{CH}_2 \mathrm{NH}_2\)
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Match List-I (compound) with List-II (reagent or chemical test)

List-I (Compound)	List-II (Reagent or Chemical test)
(A) Phenols	(I) Tollen's test
(B) Amines	(II) \(NeutralFeCl _3 aq\). solution
(C) Aldehydes	(III) Iodoform Test
(D) Methyl Ketones	(IV) Hinsberg's Test

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Read the passage carefully and answer the Questions
Amines are classified as primary \(\left(1^{\circ}\right)\), secondary \(\left(2^{\circ}\right)\) and tertiary \(\left(3^{\circ}\right)\) depending upon the number of hydrogen atoms replaced by alkyl or aryl groups in ammonia molecules. Aliphatic amines are a stronger bases due to \(+I\) effect of an alkyl groups.
Intermolecular hydrogen bonding in primary and secondary amines affects the boiling points of amines. The intermolecular association is more in primary amines than in secondary amines as there are more number of hydrogen atoms available for hydrogen bond formation. Nitro compounds are reduced to amines by passing hydrogen gas in the presence of finely divided nickel, palladium or platinum and also by reduction with metals in an acidic medium. Gabriel synthesis is used for the preparation of primary amines. Primary amines react with nitrous acid to give unstable diazonium-salts which can be used to synthesize a variety of compounds.
Identify the amine possessing least basic strength

Which is the correct decreasing order of boiling point
A. 1 - Bromoethane
B. 1 - Bromopentane
C. 1 - Bromobenzene
D. 1 - Bromopropane
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Answer the question on the basis of passage given below :
Adsorption is a surface phenomenon which can be expressed by means of an empirical relationship know as Freundlich Adsorption isotherm. The relationship given by \(\frac{x}{m} = Kp^{\frac{1}{n}}\ (n > 1)\)
x = Mass of the gas adsorbed
m = Mass of adsorbent
p = Pressure at which adsorption takes place
K and n are constant
When water is the dispersion medium, the colloidal system is called:

For strong electrolytes, \(\Lambda_m\) increases with dilution and is represented by the equation \(\Lambda_m=\Lambda_m^0-A c^{1 / 2}\). Here, the
(A) Nature of solvent.
(B) Temperature.
(C) Charges on cation and anions produced.
(D) Type of electrolyte.
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A series LCR circuit is connected to a 220 V variable frequency (a.c) supply. If L = 20 mH, \( C = 800/\pi^2 \, \mu \text{F} \) and R = 110 \( \Omega \). The frequency of the source, for which the average power absorbed by the circuit is maximum will be:

A bar magnet falls freely from a height of 9.8 m through a metal ring. Its acceleration will be equal to

Solution of \(\frac{d y}{d x}+y=2\) is:

A boat is moving due east in a region where the Earth's magnetic field is \( 5.0 \times 10^{-5} \text{ NA}^{-1}\text{m}^{-1} \) due north and horizontal. The boat carries a vertical aerial 2 m long. If the speed of the boat is \( 10.5 \text{ m s}^{-1} \), find the induced e.m.f. in the aerial.

The area (in sq.units) of the region enclosed by the curve \(y = cos\) \(x\), \(-\frac{\pi}{2} \leq x \leq \frac{\pi}{2}\) and the \(x\) - axis is:

In a kilometer race, \(A\) beats \(B\) by 50 meters or by 5 seconds, then the time taken by \(A\) to complete the race is