Which of the following is not a Chelating ligand?

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Carbohydrates such as cane sugar, glucose, starch etc. belong to a class of naturally occurring organic compounds. Structurally these are polyhydroxy aldehydes or ketones or the compounds which produce such units on hydrolysis. Carbohydrates which are sweet in taste are called sugars. Theses sugars can be reducing or non-reducing. Monosaccharides cannot be hydrolyzed to simpler units whereas Oligosaccharides yield two to ten monosaccharide units on hydrolysis. Polysaccharides yield large number of monosaccharide units on hydrolysis. This class of biomolecules is essential for living systems as they serve as storage molecules in plants and animals. In addition, they provide raw materials for important industries like furniture, textiles, paper, lacquers and breweries. Two aldopentose form important constituents of nucleic acids. Carbohydrates are also called saccharides (Greek: sakcharon which means sugar). Sugar which is used in household and in milk also comes under this class of biomolecules.
Among below given carbohydrates, which one is not a polysaccharides ?

Methyl bromide reacts with silver nitrite to form :

Choose the correct statement/statements for Cannizaro reaction.
A. Takes place in aldehydes and ketones having absence of \(\alpha\)-hydrogen
B. Takes place in aldehydes having absence of \(\alpha\)-hydrogen
C. It is a disproportionation reaction
D. Get a mixture of carboxylic acid salt and ethers
Choose the correct answer from the options given below:

Alcohol is more soluble in water when comparNo Solutioned to alkanes due to formation of

Answer the question on the basis of passage given below :
There are three kinds of amines which are primary, secondary and tertiary amines. These amines may have alkyl group or aryl group or both alkyl and aryl groups. These amines can be distinguished from one another by various chemical tests.
An amine A on treatment with \(\text{HNO}_2\) gives \(\text{N}_2\text{(g)}\) and an alcohol B. The molecular mass of alcohol B is 46.
The amine A is :

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The decomposition of \(N_2O_5\ (g)\) is given as
\(N_2O_5(g) \rightarrow 2NO_2(g) + \frac{1}{2}O_2(g)\)
The above reaction is found to be of first order.
Predict the intercept for the plot of \(log \frac{[N_2O_5]_0}{[N_2O_5]}\) versus time

If matrix \(A=\left[a_{i j}\right]_{2 \times 2}\) where \(a_{i j}=\left\{\begin{array}{l}1, i \neq j \\ 0, i=j\end{array}\right.\) then \(A^3\) is equal to :

The values of \(a\) for which the function \(f(x)=a^x\) is increasing on \(R\) are given by :

A parallel plate capacitor made of circular plates each of radius 10.0 cm has a capacitance 200 pF . The capacitor is connected to a 200 V ac supply with an angular frequency of \(200 rad / s\). The amplitude of the current is :

The power and aperture of lenses L1, L2 and L3 are given below in tabular format. Which pair of lenses should be chosen for constructing a microscope?

Lens	Power	Aperture
L1	3D	8 cm
L2	6D	1 cm
L3	10D	1 cm

If a man with blood group A marries a woman with blood group AB. Which of the following blood group will never be found in their children?

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The B-lymphocytes produce an army of proteins in response to pathogens. Each antibody molecule has four peptide chains, two small called light chains and two longer called heavy chains. Virus-infected cells secrete proteins called interferons which protect non-infected cells from further viral infection. Symptoms of allergic reactions include sneezing, watery eyes, running nose and difficulty in breathing. The use of drugs like anti-histamine, adrenalin and steroids quickly reduce the symptoms of allergy. Lymphoid organs are the organs where origin and/or maturation and proliferation of lymphocytes occur. The primary lymphoid organs are bone marrow and thymus. After maturation the lymphocytes migrate to secondary lymphoid organs like spleen, lymph nodes, tonsils, Peyer's patches of small intestine and appendix. Heroin commonly called smack is chemically diacetylmorphine which is a white, odourless, bitter crystalline compound. This is obtained by acetylation of morphine, which is extracted from the latex of poppy plant Papaver somniferum.
Which one of the followings drug does not reduce the symptoms of allergy quickly?