Consider the following reaction:
\(Ph-CH(Cl)-CH_3 \xrightarrow[\Delta]{\text{ alc. } KCN}\text {?}\)
The product formed is:

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Alcohols and phenol are formed when a hydrogen atom in a hydrocarbon, aliphatic and aromatic respectively, is replaced by \(\text{-OH}\) group. The substitution of a hydrogen atom in a hydrocarbon by an alkoxy or aryloxy group forms ethers. Alcohols and phenol consist of two part, an alkyl/aryl group and a hydroxyl group. The properties of alcohols and phenols are primarily due to the hydroxyl group. The nature of alkyl and aryl groups simply modify these properties. Alcohol react both as nucleophiles and electrophiles whereas in phenols, the reactions that take place on the aromatic ring are electrophilic subtitution reactions.
Aspirin is an acetylation product of :

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A colloid is a heterogeneous system in which a substance is dispersed (dispersed phase) as fine particles in another substance called dispersion medium.
Their particle size is intermediate between that of pure solutions (less than 1 nm) and suspensions (greater than 1000 nm). They are known for interesting properties such as enormous surface area, Tyndall effect, Brownian motion etc.
They are widely used in industries and day to day life.
Some prominent uses of colloids are those in smoke precipitators, purification of water, medicines, cleansers etc.
Which of the following electrolyte exhibits maximum flocculating power in the coagulation of a positive metal hydroxide sol?

Match List I with List II

list 1	list 2
A. Vitamin A	1. Rickets
B. Vitamin C	II. Xerophthalmia
C. Vitamin B1	III. Scurvy
D. Vitamin D	IV. Beri-Beri

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Neutral or weakly alkaline \(KMnO_4\) solution will oxidise iodide ion into :

Write the IUPAC name of the following compound \(C_6H_5O(CH_2)_6 - CH_3\)

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Strong oxidising agents oxidise toluene and its derivatives to benzoic acid. However, it is possible to stop the oxidation at the aldehyde stage with suitable reagents that convert the methyl group to an intermediate that is difficult to oxidise further.
Conversions that can be done by same reagent are:
(A) Benzaldehyde to 2-nitrobenzaldehyde
(B) Propan-1-ol to propanal
(C) Pent-3-en-2-ol to pent-3en-2-one
(D) Butanal to Butan-1-ol
(E) Methanal to Ethanol
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The corner points of the bounded feasible region determined by the system of linear constraints are (0,10), (5, 5), (15, 15), (0, 20). Let \(z=p x+q y\) where \(p, q>0\). Then the condition on p and q so that the maximum value of z occurs at (15, 15) and (0, 20) is

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There are some deposits of nitrates and phosphates in the earth’s crust. Nitrates are more soluble in water. Nitrates are difficult to reduce under laboratory conditions, but microbes do it easily. Ammonia forms a large number of complexes with transition metals. Hybridisation easily explains the ease of sigma donation capability of NH₃ and PH₃. Phosphine is an inflammable gas, it is prepared from white phosphorus.
NH₃ is a stronger base than PH₃ because:

Identify one of the given factors which does not affect Hardy-Weinberg equilibrium.

A test cross is carried out to determine the genotype by crossing with:

Match List I with List II.

LIST I	LIST II
A. Dodo	I. Australia
B. Quagga	II. Mauritius
C. Thylacine	III. Africa
D. Stellar's Sea cow	IV. Russia

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The corner points of the bounded feasible region determined by the system of linear constraints are \((0,0),(5,0),(3,4)\) and \((0,5)\). Let \(Z=p x+q y\) where \(p, q>0\). Condition on \(p\) and \(q\) so that the maximum of \(Z\) occurs at both \((5,0)\) and \((3,4)\) is