COMEDK 2020

Denatured alcohol is

The product formed when hydroxylamine
condenses with a carbonyl compound is called

The reagent used in Clemmenson's reduction is

A body of mass 10 mg is moving with a velocity of 100 ms\(^{-1}\). The wavelength of de-Broglie wave associated with it would be
(\(h=6.63\times10^{-34}\) Js)

Mg\(^{2+}\) is isoelectronic with

The amino acid which is not optically active is

In acetylene molecule, between the carbon atoms there are

During the formation of a chemical bond

For a stable molecule the value of bond order
must be

The number of antibonding electron pairs in O\(_2^{2-}\) molecular ion on the basis of molecular orbital theory is
[Atomic number of O is 18]

\(2S{O_2}(g) + {O_2}(g)\buildrel {{V_2}{O_5}} \over \rightleftharpoons\) is an example for

Which one of the following is a second order
reaction?

Paracetamol is a/an

A metal present in insulin is

Acidified sodium fusion extract on addition of
ferric chloride solution gives blood red
colouration which confirms the presence of

Hofmann’s bromamide reaction is to convert

Decomposition of benzene diazonium chloride by using Cu\(_2\)Cl\(_2\)/HCl to form chlorobenzene is

Maximum number of molecules of CH\(_3\)I that can react with a molecule of CH\(_3\)NH\(_2\) are

IUPAC name of Na\(_3\)[Co(NO\(_2\))\(_6\)] is

The number of unidentate ligands in the
complex ion is called

The oxidation state of iron in K\(_4\)[Fe(CN)\(_6\)] is,

Which complex cannot ionise in solution?

The electronic configuration of Cr\(^{3+}\) is

Formation of coloured solution is possible,
when metal ion in the compound contains

Which of the following forms a colourless
solution in aqueous medium?

+I-effect is shown by

Benzene reacts with chlorine in sunlight to give a final product

An alkyl halide reacts with alcoholic ammonia in
a sealed tube, the product formed will be

The general formula of a cycloalkene is

According to Baeyer's strain theory which is highly stable?

Hydroxyl ion concentration of 1M HCl is

Which of the following salts on being dissolved in water gives pH > 7 at 25\(^\circ\)C ?

Which one of the following shows functional
isomerism?

How many chiral carbon atoms are present in
2, 3, 4-trichloropentane ?

Geometrical isomerism is shown by

When KBr is dissolved in water, K\(^+\) ions are

The volume of 10N and 4N HCl required to
make 1 litre of 7N HCl are

During the extraction of gold the following reactions take place
\(\mathrm{Au + C{N^ - } + {H_2}O\buildrel {{O_2}} \over \longrightarrow [X]}\)
\(\mathrm{[X] + Zn\buildrel {} \over \longrightarrow [Y] + Au}\)
X and Y are respectively

Ellingham diagram represents a graph of

Identify the ore not containing iron

When conc. H\(_2\)SO\(_4\) is heated with P\(_2\)O\(_5\), the acid is converted into

In the periodic table metals usually used as catalysts belong to

Presence of halogen in organic compounds can be detected using

In the ionic equation,
\(\mathrm{BiO_3^-+6H^++xe^-\rightarrow Bi^{3+}+3H_2O}\),
the value of x is

Carbon forms two oxides which have different
compositions. The equivalent mass of which
remains constant?

Graphite is a soft solid lubricant extremely
difficult to melt. The reason for this anomalous
behaviour is that, graphite

The number of gram molecules of chlorine in \(6.02\times10^{25}\) hydrogen chloride molecules is

Which one of the following has maximum
number of atoms of oxygen?

Molarity of a given orthophosphoric acid
solution is 3M. It’s normality is

The mass of a metal, with equivalent mass 31.75, which would combine with 8 g of oxygen is