Match List-l with List-ll

List-l	List-II
(A) Coupling reaction	(I) Primary amines
(B) Hofmann's degradation	(II) Aromatic amines
(C) Isocyanide test	(III) Phenols and aromatic amines
(D) Diazonium salts	(IV) Amide to amine

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Which of the following ion is colourless?

In aldehydes, the carbonyl group is bonded to a carbon and hydrogen, while in ketones it is bonded to two carbon atoms. The carbonyl compounds in which carbonyl group is bonded to oxygen are known as carboxylic acid and their derivatives.
Which series represents compounds in increasing order of acidity?

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Biomolecules are the organic compounds present as an essential constituents of living organisms in different cells. molecules are generally termed as macromolecules, which are carbohydrates, enzymes, nucleic acids, amino acids and proteins The etc. Carbohydrates are classified as sugars and non-sugars include sucrose, glucose, fructose, starch and cellulose. Enzymes are coordinated with various chemical reactions in nucleic acid. Nucleic acids are found in living organisms made up of proteins and atural polymers. Two types that are generally found in biological systems are DNA and RNA nucleic acid. Amino acids bifunctional groups of carboxyl and amino groups. Proteins are a class of biologically important compounds. They are crucial are to virtually all processes in living systems. Some of them are hormones, which serve as chemical messengers that coordinate certain biochemical activities.
Starch is a polymer of saccharides known as

The van't Hoff Factor, \(i\) for complete dissociation of (i) NaCl , (ii) \(MgSO _4\) and (iii) \(K _2 SO _4\) are

The rate of a chemical reaction doubled for every 10°C rise in temperature. If the temperature is raised by 50°C, the rate of reaction will be

Select the correct expression for the parts per million (ppm) concentration term:

The effect on the interference fringes in young double slit experiment if width of the slit is increased.
(A) The interference pattern gets less and less sharp
(B) The interference pattern gets brighter
(C) The interference pattern may disappear, if, condition \( s/S \le \lambda/d \) is not satisfied. (s is size of source and S is its distance from two slits)
(D) The interference fringes becomes broad
(E) No effect on the interference pattern
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A particle of mass m and charge q is placed at rest in a uniform electric field E and then released. The kinetic energy attained by the particle after moving a distance y is:

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Recombinant DNA Technology
Asexual reproduction preserves the genetic information, while sexual reproduction permits variation. Traditional hybridization procedures used in plants and animals breeding very often lead to inclusion and multiplication of undesirable genes along with the desired genes. The techniques of genetic engineering, which include creation of recombinant DNA, use of gene cloning and gene transfer, overcome this limitation and allow us to isolate and introduce only one or a set of desirable genes without introducing genes into the target organism.
In Recombinant DNA Technology, what is the role of the "selectable marker gene"?

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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 number of all possible matrices of order \(3 \times 4\) with each entry 1, 2 or 3 are:

The particle that can not be accelerated by van de Graaff generator is :