IIT-JEE 1999

The correct order of increasing C - O bond length of CO, \(CO_3^{2-}\), CO2 is

The geometry of H2S and its dipole moment are

When 3.06 g of solid NH4HS is introduced into a two litre evacuated flask at 27o C, 30% of the solid decomposes into gaseous ammonia and hydrogen sulphide. (i) Kc and Kp for the reaction at 27o C (ii) What would happen to the equilibrium wh...

The rate constant for an isomerisation reaction, A \(\to\) B is 4.5 \(\times\) 10-3 min-1. If the initial concentration of A is 1 M, calculate the rate of the reaction after 1 h.

A cell, Ag | Ag+ || Cu2+ | Cu, initially contains 1 M Ag+ and 1 M Cu2+ ions. Calculate the change in the cell potential after the passage of 9.65 A current for 1 h.

One mole of nitrogen gas at 0.8 atm takes 38 s to diffuse through a pinhole. whereas one mole of an unknown compound of xenon with flourine at 1.6 atm takes 57 s to diffuse through the same hole. Calculate the molecular formula of the compo...

The oxidation number of sulphur in S8,S2F2,H2S
respectively, are

Ionic radii of

The normality of 0.3 M phosphorus acid (H3PO3) is

Give reasons of the following:
BeCl2 can be easily hydrolysed.

Nitrobenzene is formed as the major product along with a minor product in the reaction of benzene with a hot mixture of nitric acid and sulphuric acid. The minor product consists of carbon : 42.86 %, hydrogen : 2.40%, nitrogen : 16.67% and ...

A plant virus is found to consist of uniform cylindrical particles of 150 Å in diameter and 5000 Å long. The specific volume of the virus is 0.75 cm3/g. If the virus is considered to be a single particle, find its molar mass.

How many millilitres of 0.5 M H2SO4 are needed to dissolve 0.5 g of copper(II) carbonate?

The electrons, identified by quantum numbers n and l, (i) n = 4, l = 1, (ii) n = 4, l = 0, (iii) n = 3, l = 2 and (iv) n = 3, l = 1 can be placed in order of increasing energy, from the lowest to highest, as

Ground state electronic configuration of nitrogen atom can be represented by