Name the reaction when carboxyclic acids having an a -hydrogen are halogenated at the a-position on treatment with chlorine in the presence of a small amount of red phosphorus.

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Aldehydes are generally more reactive than ketones in nucleophilic addition reactions due to steric and electronic reasons. Sterically, the presence of two relatively large substituents in ketones hinders the approach of nucleophile to carbonyl carbon more than aldehydes having only one such substituent Electronically aldehydes are more reactive than ketones because two alkyl groups reduce the elctrophilicity of the carbonyl more effectively than in former.
Write the reaction sequence when phthalic acid reacts with ammonia.


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The following reaction is known as

Camphor in nitrogen gas is a type of solution:

Arrange the following in increasing order of basic strength in aqueous solution :
(A) \(C _6 H _5 NH _2\)
(B) \(C _2 H _5 NH _2\)
(C) \(\left( C _2 H _5\right)_2 NH\)
(D) \(NH _3\)
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Nucleophilic addition will be most favoured in:

The coordination number \(( CN )\) and oxidation state \(( OS )\) of Co in \(\left[ Co \left( C _2 O _4\right)_3\right]^{3-}\) is.

A bar magnet of magnetic moment 5.0 \( A \, m^2 \) has poles 20 cm apart. The pole strength would be

Arrange the following step of PCR in correct sequence.
(A) Extension of Primer
(B) Annealing
(C) Denaturation of ds DNA
(D) Amplification
(E) Use of DNA polymerase and deoxynucleotides
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A circular loop is placed in the plane of the paper in a magnetic field B. A current is induced in the loop in an anticlockwise direction. This is because the magnetic field B is

Single step large mutation leading to speciation is also called:

A rod of infinite length is placed along the axis of a concave mirror of focal length f.
The near end of the rod is at a distance u > f from the mirror. The length of its image is:

Match List-I with List-I

List-I	List-II
A. Electric field outside a uniformly charged thin spherical shell	(I) zero
B. Electric field inside a uniformly charged thin spherical shell	(II) \(\frac{\lambda}{2 \pi \epsilon_0 r} \vec{n}\)
C. Electric field due to an infinitely long straight uniformly charged wire	(III) \(\frac{\sigma}{2 \epsilon_0} \vec{n}\)
D. Electric field due to a uniformly charged infinite plane sheet	(IV) \(\frac{k q}{r^2} \vec{r}\)

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