Aqueous solutions from the following with highest boiling point will be : (Assume no dissociation or association)

The unit of rate constant for first order reaction is:

Benzene ring in phenol is expected to give the characteristic substitution or replacement reactions i.e. halogenation, nitration, sulphonation, alkylation etc. In these reactions, the attacking reagent is electrophile. The phenolic group activates the ortho and para positions in the ring due to conjugation. Disubstitution reactions are quite fast as the electron density in the ring has increased considerably. Phenols do not respond to nucleophilic substitution reactions as it is influenced by phenolic group.
Picric acid is very strong acid due to presence of:"

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Haloalkanes undergo nucelophilic substitution reactions owing to the polarity of CX bond. The nucleophile reacts with the haloalkane on the carbon possessing a partial positive charge holding the halogen atom. The halogen atom X is replaced by a nucleophile. Depending on the kinetics and mode of bond breaking, the mechanism can be either SN1 or SN2 reaction. The rate of SN1 reaction is governed by the stability of carbocation and in SN2 reaction, the rate of reaction is governed by steric factor. Chirality is the main factor in both SN1and SN2. In SN1 reaction, the chirality of alkyl halide is accompanied by racemization of the product, while in SN2 reaction, the product is characterized by inversion of configuration. The structure of alkyl halide and the nature of the solvent also governs the mechanism of the substitution.
Hydrolysis of 2-Chlorobutane will result in formation of

Chlorine containing antibiotic produced by soil microorganisms which is effective for the treatment of typhoid fever is :

The compound representing a vinylic bromide is:

Match the properties given in list-l with the metals given in list-ll

List-I (Property)	List-II (Metal)
(A) Element with highest second ionization enthalpy	(I) Co
(B) Element with highest heat of atomisation	(II) Cu
(C) M in \(M(\mathrm{CO})_6\)	(III) Zn
(D) Element with highest third ionization enthalpy	(IV) Cr

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The differential equation of the family of lines through the origin is:

Which of the following is correct for equipotential surfaces ?
(A) Electric field lines are always perpendicular to equipotential surfaces.
(B) Equipotential surfaces are always spherical in shape.
(C) Work done in moving a charge on equipotential surface is always negative.
(D) Two equipotential surfaces never intersect each other.
(E) Workdone in moving a charge on equipotential surface is always zero.

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Living systems are made up of various complex bio-molecules like carbohydrates, proteins, nucleic acids, lipids etc. Proteins and carbohydrates are essential constituents of our food. Carbohydrates are primarily produced by plants and form a very large group of naturally occurring organic compounds. Some common examples are cane sugar, glucose, starch etc.
Carbohydrates are also known as Saccharides because

Choose the correct combination(s) :
(A) Nylon 6: Addition Copolymer
(B) Buna-S: Addition homopolymer
(C) Melamine: Condensation Copolymer
(D) Teflon : Addition homopolymer
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The longest wavelength in Balmer Series of hydrogen spectrum will be:

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Carbonyl compounds such as aldehydes, ketones, and carboxylic acids play an important role in the biochemical process of plants and animal kingdom. Many aldehydes and ketones find applications in dye, perfumery and other industries.
The carbonyl carbon atom is \(s p^2\)-hybridized forming three sigma and one pi-bond with oxygen.
C-O bonds are polar bond due to high electronegativity of oxygen than carbon.
Hence the carbonyl carbon behaves as an electrophilic center and oxygen as a nucleophilic centre.
Primary and secondary alcohols yield aldehydes and ketones respectively upon oxidation with variety of oxidizing agents.
The boiling points of aldehydes and ketones differ from hydrocarbons and ethers.
Aldehydes and ketones undergo nucleophilic addition reaction due to presence of electrophilic carbonyl carbon.
Nucleophile and a proton add across the carbon oxygen double bond.
Identify the product Y in the following reaction.
\(CH_3-CH=CH-CH_2 OH \xrightarrow{\text { Pyrididium Chlorochromate }} Y\)