AIPMT 2012 Prelims

In the following sequence of reactions

the end product (C) is

The correct order of decreasing acid strength of trichloroacetic acid (A), trifluoroacetic acid (B), acetic acid (C) and formic acid (D) is

CH3CHO and C6H5CH2CHO can be distinguished chemically by

Acetone is treated with excess of ethanol in the presence of hydrochloric acid. The product obtained is

Predict the products in the given reaction.

Which one of the following sets of monosaccharides forms sucrose?

Deficiency of vitamin B1 causes the disease

Bond order of 1.5 is shown by

The pair of species with the same bond order is

Which one of the following pairs is isostructural (i.e., having the same shape and hybridization) ?

Which of the following species contains three bond pairs and one lone pair arround the central atom ?

In a reaction, A + B \(\to\) product, rate is doubled when the concentration of B is doubled, and rate increases by a factor of 8 when the concentration of both the reactants (A and B) are doubled, rate law for the reaction can be written...

In a zero-order reaction, for every 10oC rise of temperature, the rate is doubled. If the temperature is increased from 10oC to 100oC, the rate of the reaction will become

Which one of the following is an outer orbital complex and exhibits paramagnetic behaviour?

Which of the statements is not true?

Identify the alloy containing a non-metal as a constituent in it.

Limiting molar conductivity of NH4OH
\(\left[ {} \right.\)i.e.  \(\Lambda _{m\left( {N{H_4}OH} \right)}^0\)\(\left. {} \right]\) is equal to

Which one of the following statements regarding photochemical smog is not correct?

50 mL of each gas A and of gas B takes 150 and 200 seconds respectively for effusing through a pin hole under the similar conditions. If molecular mass of gas B is 36, the molecular mass of gass A will be

In the following reaction

The major product is

Among the following compounds the one that is most reactive towards electrophilic nitration is

pH of a saturated solution of Ba(OH)2 is 12. The value of solubility product (Ksp) of Ba(OH)2 is

Equimolar solutions of the following substances were prepared separately. Which one of these will record the highest pH value ?

Buffer solutions have constant acidity and alkalinity because

Sulphur trioxide can be obtained by which of the following reaction?

Which of the following statements is not valid for oxoacids of phosphorus?

In which of the following compounds, nitrogen exhibits highest oxidation state?

Identify the wrong statement in the following.

Which one of the following is not a condensation polymer?

Which of the following statements is false?

Which one of the following is a mineral of iron?

In the extraction of copper from its sulphide ore, the metal is finally obtained by the reduction of cuprous oxide with

Aluminium is extracted from alumina (Al2O3) by electrolysis of a molten mixture of

A mixture of potassium chlorate, oxalic acid and sulphuric acid is heated. During the reaction which element undergoes maximum change in the oxidation number?

When Cl2 gas reacts with hot and concentrated sodium hydroxide solution, the oxidation number of chlorine changes from

Which one of the alkali metals, forms only, the normal oxide, M2O on heating in air?

The ease of adsorption of the hydrated alkali metal ions on an ion-exchange resins follows the order :

The number of octahedral void(s) per atom present in a cubic close-packed structure is

A metal crystallises with a face-centred cubic lattice. The edge of the unit cell is 408 pm. The diameter of the metal atom is

pA and pB are the vapour pressure of pure liquid components, A and B, respectively of an ideal binary solution. If xA represents the mole fraction of component A, the total pressure of the solution will be

Which of the following acids does not exhibit optical isomerism?

Which nomenclature is not according to IUPAC system?

Maximum number of electrons in a subshell with \(l\) = 3 and n = 4 is

The correct set of four quantum numbers for the valence electron of rubidium atom (Z = 37) is

The protecting power of lyophilic colloidal sol is expressed in terms of

Which one of the following statements is incorrect about enzyme catalysis?

In Freundlich adsorption isotherm, the value of 1/n is

Standard enthalpy of vaporisation \(\Delta\)vapHo for water at 100oC is 40.66 kJ mol\(-\)1. The internal energy of vaporisation of water at 100oC (in kJ mol\(-\)1) is

The enthalpy of fusion of water is 1.435 kcal/mol. The molar entropy change for the melting of ice at 0oC is

In which of the following reactions, standard reaction entropy change (\(\Delta\)So) is positive and standard Gibb's energy change (\(\Delta\)Go) decreases sharply with increasing temperature ?