In the Etard reaction, the final product is:

Alum helps in purifying water by :
A. Coagulation of mud particles
B. Sedimentation of mud particles.
C. Dialysis
D. forming true solution with water
Choose the most appropriate answer from the options given below :

Which sodium halide is employed in Finkelstein reaction?

Nitration of aniline with nitric acid and sulphuric acid gives major product as

Based on solute-solvent interaction, the solute which will be most soluble in n-octane is :

The osmotic pressure of the equimolar solutions of the following at the same temperature will increase in the order:
(A) NaCl
(B) \(K_{2}SO_{4}\)
(C) \(K_{3}[Fe(CN)_{6}]\)
(D) \(NH_{2}CONH_{2}\)
Choose the correct answer from the options given below:

Which of the following relationships are not correct?
(A) \(E_{\text {cell }}^{\circ}=\frac{0.0591}{n F} \log K_c\)
(B) \(\quad \Lambda_m^{\circ}\left( Na _2 SO _4\right)=\Lambda_m^{\circ}\left( Na ^{+}\right)+\Lambda_m^{\circ}\left( SO _4^{2-}\right)\)
(C) Cell constant \(=\frac{\text { Conductivity }}{\text { Conductance }}\)
(D) \(\Delta G^{\circ}=n F E_{\text {cell }}^{\circ}\)
(E) \(Zn ( s )\left| Zn ^{2+}( aq ) \| Cu ^{2+}( aq )\right| Cu\)
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A charged particle moving with a certain velocity enters a uniform electric field perpendicular to its direction. In this context, which of the following statements are correct?
(A) Force acting on the particle is constant
(B) Acceleration of the particle is constant
(C) Velocity of the particle is constant
(D) Displacement of the particle follows a parabolic path
Choose the correct answer from the options given below:

Corner points of the feasible region for a linear programming problem are \((0,2),(3,0),(6,0)\) and \((0,5)\). Let \(F=4 x+6 y\) be the objective function. The minimum value of \(F\) occurs at:

Read the passage carefully and answer the given questions.
DNA Fingerprinting Polymorphism in DNA sequence is the basis of genetic mapping of the human genome as well as of DNA fingerprinting. DNA fingerprinting involves identification of differences in some specific regions in the DNA sequence called repetitive DNA. It works on the principle of polymorphisms in DNA sequences. The repetitive DNA are separated from bulk genomic DNA. The bulk DNA forms a major peak and the other small peaks are referred to as satellite DNA. These repetitive/satellite DNA sequences show a high degree of polymorphisms and form the basis of DNA fingerprinting.
DNA fingerprinting is meant for:

Which one of the following plants is the source of cannabinoids commonly used in drug abuse?

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.
The compound having the highest boiling point is:

Match List-I with List-II

List-I (Structure of ether)	List-II (Common name)
(A) \(C_{6}H_{5}OCH_{2}CH_{3}\)	(I) Methyl n-propyl ether
(B) \(C_{6}H_{5}O(CH_{2})_{3}CH_{3}\)	(II) Methyl phenyl ether
(C) \(C_{6}H_{5}OCH_{3}\)	(III) n-Heptyl phenyl ether
(D) \(CH_{3}OCH_{2}CH_{2}CH_{3}\)	(IV) Ethyl phenyl ether
(D) \(CH_{3}OCH_{2}CH_{2}CH_{3}\)	(IV) Ethyl phenyl ether

Choose the correct answer from the options given below: