Which of the following compounds reacts with acids to give salts?

Arrange the following amines in the order of decreasing basic character in gaseous phase:
(A) \(\text{NH}_3\)
(B) \((\text{CH}_3)_3\text{N}\)
(C) \((\text{CH}_3)_2\text{NH}\)
(D) \(\text{CH}_3\text{NH}_2\)
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Arrange the following mixtures in increasing order of their resultant molarity
(A) 20 mL of 0.5 M HCl + 30 mL of 0.3 M HCl
(B) 30 mL of 0.3 M HCl + 30 mL of 0.3 M HCl
(C) 20 mL of 0.5 M HCl + 20 mL of 0.3 M HCl
(D) 20 mL of 0.3 M HCl + 30 mL of 0.5 M HCl
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What is the correct sequence of increasing reactivity of the following compounds towards nucleophilic addition reaction?
(A) Ethanal
(B) Propanone
(C) Propanal
(D) Butanone
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The only carboxylic acid which gives positive Tollen's test is

Which of the following compound will not undergo Azo coupling reaction?

Match solution in List-l with nature of solute and solvent List-ll

List-l (Solution)	List-II (Solute and Solvent)
(A) Amalgam of mercury in sodium	(I) solid in liquid
(B) An alloy	(II) liquid in gas
(C) A saturated solution of KCI	(III) liquid in solid
(D) Chloroform in nitrogen gas	(IV) Copper in gold

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Area of the region bounded by \(y=-1, y=2, x=y^3\) and \(x=0\) is :

Arrange the following in decreasing order of the basic character in aqueous phase
(A) Ethanamine
(B) Benzeneamine
(C) Phenylmethanamine
(D) N-methylaniline
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Which syndrome has karyotype of 45, XO in humans?

DNA recombinant technology involves the use of restriction endonucleases. After having cloned the gene of interest and having optimised the conditions to induce the expression of the target protein, one has to consider producing it on a large scale. The cells harbouring cloned genes of interest may be grown on a small scale in the laboratory. In order to link the alien DNA, the vector needs to have very few, preferably single, recognition sites for the commonly used restriction enzymes. Presence of more than one recognition sites within the vector will generate several fragments, which will complicate the gene cloning. In Biolistics or gene gun method cells are bombarded with high velocity micro particles of gold or tungsten coated with DNA. The ligation of alien DNA is carried out at a restriction site present in one of the two antibiotic resistance genes. For example, you can ligate a foreign DNA at the BamH I site of tetracycline resistance gene in the vector pBR322. Since the DNA is enclosed within the membranes, we have to break the cell open to release DNA along with other macromolecules such as RNA, proteins, polysaccharides and also lipids. The RNA can be removed by treatment with ribonuclease whereas proteins can be removed by treatment with protease. Other molecules can be removed by appropriate treatments and purified DNA ultimately precipitates out after the addition of chilled ethanol.
Which one of the following enzymes works as molecular glue?

The probability of obtaining an even prime number on each die, when a pair of dice is rolled, is:

What amount of bromine will be required to convert \(6 g\) of phenol into 2,4,6-tribromophenol?