Decreasing \(Pk_b\) value of following in solution :
(A) \(CH_3CH_2NH_2\)
(B) \((CH_3CH_2)_2NH\)
(C) \((CH_3CH_2)_3N\)
(D) Aniline (Structure shown)
(E) 4-Methoxyaniline (Structure shown)
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When a protein in its native form, is subjected to physical or chemical change, then its

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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.
The zwitterionic form of amino acid is

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Organic compounds containing carbon -oxygen double bonds ( \(C = O\) ) are called carbonyl compounds. These are highly polar molecules. Hence, their boiling points are higher than hydrocarbons and ethers. Aldehydes can be prepared from dehydrogenation or oxidation of alcohols and by reduction of acylhalides. Ketones are prepared by oxidation of secondary alcohols or by hydration of alkynes etc. Aldehydes and ketones undergo nucleophilic addition reaction with the number of nucleophiles such as HCN , NaHSO3 ammonia derivatives. Carboxylic acids are prepared by the oxidation of primary alcohols, aldehydes and alkenes, by hydrolysis of nitriles. Carboxylic acids are more acidic than alcohols and phenols.
Which of the following is most reactive towards nucleophilic addition reaction ?

Low oxygen concentration in the human body at high altitudes is due to the _________

Sucrose on hydrolysis gives:

Osmotic pressure of 0.02 M urea solution at \(27^{\circ} C\), is (given \(R=0.0821 atm L mol ^{-1} K^{-1}\) )

The area of region bounded by the curve \(y = x^2\) and the line \(y = 4\) is:

Identify the statements relevant to Genetically Modified (GM) crops:
A. They have better pest resistance.
B. They have increased nutritional value.
C. They are more reliant on chemical fertilisers.
D. They have less post harvest losses.
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The angle of dip at a location in Southern India is about 18°. Which of the following is correct for dip angle in Britain ?
(A) Dip angle will be greater in Britain than in India.
(B) Dip angle will be smaller in Britain than in India.
(C) Nearer the place to the poles, lesser is the dip angle.
(D) Nearer the place to the poles, more is the dip angle.
(E) Dip angle is also called the angle of declination.

If \(A\) and \(B\) are square matrices of order 3 such that \(|A|=-1\) and \(|B|=5\), then the value of \(|3 A B|\) is

The value of the integral \(I=\int_0^1 \frac{1}{\sqrt{1+3 \sqrt{x}}} d x\) is:

Which of the radiation of sun light is used as heat energy?