AIEEE 2005

Acid catalyzed hydration of alkenes except ethene leads to the formation of

The best reagent to convert pent -3- en-2-ol into pent -3-en-2-one is

Among the following acids which has the lowest pKa value?

\(p\)-cresol reacts with chloroform in alkaline medium to give the compound A which adds hydrogen cyanide to form, the compound \(B.\) The latter on acidic hydrolysis gives chiral carboxylic acid. The structure of the carboxylic acid is :

Reaction of cyclohexanone with dimethylamine in the presence of catalytic amount of
an acid forms a compound if water during the reaction is continuously removed. The
compound formed is generally known as

The reaction

is fastest when \(X\) is

The decreasing order of nucleophilicity among the nucleophiles

Due to the presence of an unpaired electron, free radicals are:

In both DNA and RNA, heterocyclic base and phosphate ester linkages are at-

Which one of the following species is diamagnetic in nature?

Lattice energy of an ionic compounds depends upon

For the reaction
2NO2 (g) \(\leftrightharpoons\) 2NO (g) + O2 (g), (Kc = 1.8 \(\times\) 10-6 at 184oC) (R = 0.0831 kJ/(mol. K))
When Kp and Kc are compared at 184oC , it is found that :

The exothermic formation of ClF3 is represented by the equation:
Cl2 (g) + 3F2 (g) \(\leftrightharpoons\) 2ClF3 (g); \(\Delta H\) = -329 kJ
Which of the following will increase the quantity of ClF3 in an equilibrium mixture of
Cl2, F2 and ...

An amount of solid NH4HS is placed in a flask already containing ammonia gas at a
certain temperature and 0.50 atm. Pressure. Ammonium hydrogen sulphide
decomposes to yield NH3 and H2S gases in the flask. When the decomposition
reaction rea...

Hydrogen bomb is based on the principle of

The photon of hard gamma radiation knocks a proton out of \({}_{12}^{24}Mg\) nucleus to form

A schematic plot of \(ln\) \({K_{eq}}\) versus inverse of temperature for a reaction is shown below

The reaction must be

A reaction involving two different reactants can never be

t1/4 can be taken as the time taken for the concentration of a reactant to drop to \(3 \over 4\) of its initial value. If the rate constant for a first order reaction is K, the t1/4 can be written as

Which one of the following types of drugs reduces fever?

Which one of the following methods is neither meant for the synthesis nor for
separation of amines?

Amongst the following the most basic compound is

An organic compound having molecular mass 60 is found to contain C = 20%, H =
6.67% and N = 46.67% while rest is oxygen. On heating it gives NH3 along with a
solid residue. The solid residue give violet colour with alkaline copper sulphate
...

Which of the following compounds shows optical isomerism?

Which one of the following cyano complexes would exhibit the lowest value of
paramagnetic behaviour?
(At. No. Cr = 24, Mn = 25, Fe = 26, Co = 27)

The oxidation state of Cr in [Cr(NH3)4Cl2]+ is :

The IUPAC name of the coordination compound K3[Fe(CN)6] is

The value of the ‘spin only’ magnetic moment for one of the following configurations
is 2.84 BM. The correct one is :

Which of the following factors may be regarded as the main cause of lanthanide
contraction?

The lanthanide contraction is responsible for the fact that :

On heating mixture of \(C{u_2}O\) and \(C{u_2}S\) will give :

Calomel \(\left( {H{g_2}C{l_2}} \right)\) on reaction with ammonium hydroxide gives :

The oxidation state of chromium in the final product formed the reaction between \(K{\rm I}\) and acidified potassium dichromate solution is :

The highest electrical conductivity of the following aqueous solutions is of :

Aluminium oxide may be electrolysed at 1000oC to furnish aluminium metal (Atomic
mass = 27 amu; 1 Faraday = 96,500 Coulombs). The cathode reaction is Al3+ + 3e- \(\to\) Alo To prepare 5.12 kg of aluminium metal by this method would require

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For a spontaneous reaction the ∆G , equilibrium constant (K) and \(E_{cell}^o\) will be respectively

Which one of the following statements is NOT true about the effect of an increase in
temperature on the distribution of molecular speeds in a gas?

Tertiary alkyl halides are practically inert to substitution by SN2 mechanism because of

Alkyl halides react with dialkyl copper reagents to give

Elimination of bromine from 2-bromobutane results in the formation of-

Reaction of one molecule of HBr with one molecule of 1,3-butadiene at 40oC gives
predominantly

Which types of isomerism is shown by 2,3-dichlorobutane?

2 methylbutane on reacting with bromine in the presence of sunlight gives mainly

Of the five isomeric hexanes, the isomer which can give two monochlorinated
compounds is

Which of the following statements in relation to the hydrogen atom is correct?

Hydrogen ion concentration in mol / L in a solution of pH = 5.4 will be :

The solubility product of a salt having general formula MX2, in water is: 4 \(\times\) 10-12 . The
concentration of M2+ ions in the aqueous solution of the salt is :

What is the conjugate base of OH-?

During the process of electrolytic refining of copper, some metals present as impurity
settle as ‘anode mud’ These are