Addition of HCN to carbonyl group results in formation of:

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Optically active polyhydroxy aldehydes or ketones or molecules which provide such units on hydrolysis are called carbohydrates. They can be broadly classified as monosaccharides, disaccharides and polysaccharides depending on their behavior towards hydrolysis. They are also classified as reducing or non-reducing sugars. Another class of biomolecules is proteins which are polymers of twenty different amino acids linked by peptide bonds. Amino acids can be classified as acidic, basic or neutral depending on the relative number of amino and carboxyl groups in their molecule. The essential amino acids cannot be synthesized by our body and hence must be provided through diet. Nucleic acids are the polymers of nucleotides which in turn consist of a base, pentose sugar and phosphate. There are two types of nucleic acids namely, DNA and RNA which differ in the composition of sugar and a base
Four bases present in RNA molecule are

Aniline can be distinguished from ethanamine by

Match List I with List II

LIST I	LIST II
A. Zone refining	I. Dressing of ZnS
B. Froth floatation process	II. Extraction of Au
C. Cyanide process	III. of AIExtraction
D. Electrolytic reduction	IV. Ultrapure Ge

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For a general electrochemical reaction of the type :
\(a A+b B \rightarrow c C+d D\)
involving transfer of \(n\) electrons, the Nernst equation can be writtenas :

\(\left[ Ag \left( NH _3\right)_2\right] OH\) forms silver when it reacts with:

Vitamin B12 is a coordination compound of _______

If \(y=(x+1)\left(x^2+1\right)\left(x^4+1\right)\left(x^8+1\right)\) then \(\frac{d y}{d x}\) at \(x = -1\) is

The freezing point of an aqueous solution containing 23 g of \(C _2 H _5 OH\) in 1000 g of water, is
(Given \(K_f\) for water \(\left.=1.86 K kg mol ^{-1}\right)\)

Identify the invasive plant species posing threat to native species.
(A) Parthenium
(B) Clarias
(C) Eicchornia
(D) Lantana
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A uniform electric field of 16 N/C exists in the vertically downward direction. The increase in electric potential as one goes up through a height of 75 cm.

When the electron in a hydrogen atom jumps from the 2nd orbit to the 1st orbit, the wavelength of the radiation emitted is \(\lambda\).
When the electron jumps from the 3rd orbit to the 1st orbit, the wavelength of emitted radiation is:

Identify " \(Y\) " in the following reaction:
\(R - Mg - X + CO _2 \xrightarrow{\text { Dry ether }} X \xrightarrow{ H _3 O ^{+}} Y\)