\(CH_3CH_2OH \xrightarrow[413\ K]{H_2SO_4}\) A. Identify "A" and mention the name of mechanism through which it is formed?

The rate constant for a reaction is \(3.5 \mathrm{~mol}^{-1} \mathrm{~L} \mathrm{~s}-^{-1}\). The order of the reaction is:

Match List - I with List - II.

List - I	List - II
(A) Urease	(I) Maltose
(B) Maltase	(II) Glucose and fructose
(C) Invertase	(III) \(NH _3\) and \(CO _2\)
(D) Diastase	(IV) Glucose

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Carboxylic acids are the earliest organic compounds isolated from nature. These are also known as organic acids but are weaker acids as compared to mineral acids. However, they are more acidic than alcohols and phenols because of greater resonance stabilization of the parent acid and its conjugate base. The acidic strength is determined by the \(K _a\), which is called the acidity constant. The greater the value of \(K _a\), the greater the tendency of the acid to ionize and hence the stronger the acid. The acidic strength of the saturated aliphatic carboxylic acid depends upon the inductive effect and its position with respect to - COOH groups. Electron -donating substituents tend to decrease whereas electron -withdrawing substituents tend to increase the acidic strength. The acidic strength of the aromatic carboxylic acid, on the other hand depends upon both the inductive effect and the resonance effect of the substituents.
p-Nitrobenzoic acid is a stronger acid than benzoic acid because of

When aniline is reacted with benzoyl chloride, the correct product is

Benzenediazonium chloride is a colourless solid that decomposes in

Molar mass of a non-volatile solute (in g/mol) in its \(10\%\) by mass aqueous solution showing \(2\%\) decrease in its vapour pressure is :

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In zwitter ionic form, amino acids show amphoteric behaviour as they react both with acids and bases.
Except glycine, all other naturally occurring \(\alpha\) - amino acids are optically active, since the \(\alpha\) -carbon atom is asymmetric. These exist both in 'D' and 'L' forms. Most naturally occurring amino acids have L-configuration. L-Aminoacids are represented by writing the \(-NH_2\) group on left hand side.
Optically inactive amino acid from the following is :

In a typical angiosperm, the mature embryo sac is:

Arrange the following compounds in increasing order of their acidic strength:
(A) 3-nitrophenol
(B) 3,5-Dinitrophenol
(C) 2,4,6 -Trinitrophenol
(D) Phenol
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Punnett Square was developed by:

For the given values 8, 10, 12, 14, 16, the three-year moving averages are:

Shown below is the graph of parabola \(y^2=x\), the area (in sq. units) of the shaded region is: