Chemistry questions
29404 published questions with worked solutions.
- For the following reaction 2 X + Y k P the rate of reaction is d[ P ] dt = k[ X ]. Two moles of **X** are mixed with one mole of...
- Some standard electrode potentials at 298 K are given below: Pb ^ 2+ / Pb -0.13 V Ni ^ 2+ / Ni -0.24 V Cd ^ 2+ / Cd -0.40 V Fe ^...
- The pair(s) of complexes wherein both exhibit tetrahedral geometry is(are) (Note: py = pyridine Given: Atomic numbers of Fe, Co,...
- The correct statement(s) related to oxoacids of phosphorous is(are)
- Ozonolysis of ClO _2 produces an oxide of chlorine. The average oxidation state of chlorine in this oxide is _____.
- 2 mol of Hg(g) is combusted in a fixed volume bomb calorimeter with excess of O _2 at 298 K and 1 atm into HgO(s). During the...
- The reduction potential (E^0, in V) of MnO _4^-(aq)/ Mn (s) is _____. [Given: E^0_ ( MnO _4^-(aq)/ MnO _2(s)) = 1.68 V; E^0_ (...
- A solution is prepared by mixing 0.01 mol each of H _2 CO _3, NaHCO _3, Na _2 CO _3, and NaOH in 100 mL of water. pH of the...
- Dissolving 1.24 g of white phosphorous in boiling NaOH solution in an inert atmosphere gives a gas Q. The amount of CuSO _4 (in...
- For diatomic molecules, the correct statement(s) about the molecular orbitals formed by the overlap of two 2p_z orbitals is(are)
- The correct option(s) related to adsorption processes is(are)Not in JEE Main or NEET syllabus
- The electrochemical extraction of aluminum from bauxite ore involvesNot in JEE Main or NEET syllabus
- The treatment of galena with HNO _3 produces a gas that is
- LIST-I contains metal species and LIST-II contains their properties. LIST-I (I) [ Cr(CN) _6]^ 4- (II) [ RuCl _6]^ 2- (III) [ Cr(H...
- Match the compounds in LIST-I with the observations in LIST-II, and choose the correct option. LIST-I (I) Aniline (II) o-Cresol...
- Concentration of H _2 SO _4 and Na _2 SO _4 in a solution is 1 M and 1.8 10^ -2 M, respectively. Molar solubility of PbSO _4 in...
- An aqueous solution is prepared by dissolving 0.1 mol of an ionic salt in 1.8 kg of water at 35 ºC. The salt remains 90%...
- The reaction of Xe and O _2 F _2 gives a Xe compound **P**. The number of moles of HF produced by the complete hydrolysis of 1...
- Thermal decomposition of AgNO _3 produces two paramagnetic gases. The total number of electrons present in the antibonding...
- The correct option(s) about entropy (S) is(are) [R = gas constant, F = Faraday constant, T = Temperature]