AIPMT 2011 Prelims

In the following reactions,

the major products (A) and (C) are respectively

In a set of reactions m-bromobenzoic acid gave a product D. Identify the product D.

Which one is a nucleophilic substitution reaction among the following ?

Clemmensen reduction of a ketone is carried out in the presence of which of the following?

Which one of the following statements is not true regarding (+) lactose?

Which of the two ions from the list given below that have the geometry that is explained by the same hybridization of orbitals, NO\(_2^ -\). NO\(_3^ -\), NH\(_2^ -\), NH\(_4^ +\), SCN\(-\)?

Which of the following has the minimum bond length ?

The correct order of increasing bond length of C \(-\) H, C \(-\) O, C \(-\) C and C\(=\)C is

The pairs of species of oxygen and their magnetic behavior are noted below. Which of the following presents the correct description?

The value of \(\Delta\)H for the reaction
X2(g) + 4Y2(g) \(\rightleftharpoons\) 2XY4(g)
is less than zero. Formation of XY4(g) will be favoured at

For the reaction, N2(g) + O2(g) \(\rightleftharpoons\) 2NO(g), the equilibrium constant is K1. The equilibrium constant is K2 for the reaction,
2NO(g) + O2(g) \(\rightleftharpoons\) 2NO2(g)
What is K for the reaction,
NO2(g) $$\rightleft...

Which one of the following statements for the order of a reaction is incorrect?

Which one of the following is employed as Antihistamine?

Of the following complex ions, which is diamagnetic in nature?

The complexes [Co(NH3)6] [Cr(CN)6] and [Cr(NH3)6] [Co(CN)6] are the examples of which type of isomerism?

The d-electron configurations of Cr2+, Mn2+, Fe2+ and Co2+ are d4, d5, d6 and d7 respectively. Which one of the following will exhibit minimum paramagnetic behaviour?
(At. Nos. Cr = 24, Mn = 25, Fe = 26, Co = 27)

Which of the following carbonyls will have the strongest C \(-\) O bond?

Which of the following complex compounds will exhibit highest paramagnetic behaviour?

The complex, [Pt(Py)(NH3)BrCl] will have how many geometrical isomers ?

Acidified K2Cr2O7 solution turns green when Na2SO3 is added to it. This is due to the formation of

For the four successive transition elements (Cr, Mn, Fe and Co), the stability of + 2 oxidation state will be there in which of the following order?
(At. nos. Cr = 24, Mn = 25, Fe = 26, Co = 27)

Standard electrode potential of three metals X, Y and Z are \(-\)1.2 V, + 0.5 V and \(-\) 3.0 V respectively. The reducing power of these metals will be

The electrode potentials for Cu2+(aq) + e\(-\) \(\to\) Cu+(aq) and Cu+(aq) + e\(-\) \(\to\) Cu(s) are + 0.15 V and + 0.50 V respectively. The value of Eocu2+/cu will be

Standard electrode potential for Sn4+/Sn2+ couple is + 0.15 V and that for the Cr3+/Cr couple is \(-\) 0.74 V. These two couples in their standard state are connected to make a cell. The cell potential will be

Which one of the following statement is not true?

Two gases A and B having the same volume diffuse through a porous partition in 20 and 10 seconds respectively. The molecular mass of A is 49 u. Molecular mass of B will be

In Duma's method of estimation of nitrogen 0.35 g of an organic compound gave 55 mLof nitrogen collected at 300 K temperature and 715 mm pressure. The percentage composition of nitrogen in the compound would be (aqueous tension at 300 K = 1...

By what factor does the average velocity of a gaseous molecule increase when the temperature (in Kelvin) is doubled ?

A gaseous mixture was prepared by taking equal mole of CO and N2. If the total pressure of the mixture was found 1 atmosphere, the partial pressure of the nitrogen (N2) in the mixture is

Which of the following is least likely to behave as Lewis base?

A buffer solution is prepared in which the concentration of NH3 is 0.30 M and the concentration of NH+4 is 0.20 M. If the equilibrium constant, Kb for NH3 equals 1.8 \(\times\) 10\(-\)5, what is the pH of this solution? (log 2.7 = 0.43)

What is the product obtained in the following reaction?

Name the two type of the structure of silicate in which one oxygen atom of [SiO4]4\(-\) is shared?

The Lassaigne's extract is boiled with conc. HNO3 while testing for halogens. By doing so it

Of the following which one is classified as polyester polymer?

Which of the following pairs of metals is purified by van-Arkel method?

Which of the following elements is present as the impurity to the maximum extent in the pig iron?

Which of the following compounds has the lowest melting point?

Which one of the following is present as an active ingredient in bleaching powder for bleaching action?

The van't Hoff factor \(i\) for a compound which undergoes dissociation in one solvent and association in other solvent is respectively

The freezing point depression constant for water is \(-\)1.86o C m\(-\)1. If 5.00 g Na2SO4 is dissolved in 45.0 g H2O, the freezing point is changed by \(-\)3.82oC. Calculate the van't Hoff factor for Na2SO4.

Considering the state of hybridization of carbon atoms, find out the molecule among the following which is linear ?

The correct IUPAC name for the compound is

Which one of the following is most reactive towards electrophilic reagent?

If n = 6, the correct sequence for filling of electrons will be

The energies E1 and E2 of two radiations are 25 eV and 50 eV respectively. The relation between their wavelengths i.e., \(\lambda\)1 and \(\lambda\)2 will be

The total number of atomic orbitals in fourth energy level of an atom is

If x is amount of adsorbate and m is amount of adsorbent, which of the following relations is not related to adsorption process?

Which of the following is correct option for free expansion of an ideal gas under adiabatic condition ?

Enthalpy change for the reaction,
4H(g)  \(\to\)  2H2(g) is \(-\)869.6 kJ
The dissociation energy of H \(-\) H bond is