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The maximum number of electrons in a subshell is given by the expression
The Bohr's theory was modified to give the concept of elliptical orbits by
Vinegar made from cane sugar, now-a-days synthetically contains
In the resonating structure of benzene the number of σ and π bond are
A characteristic feature of reversible reactions is that they
A cylinder filled with a movable piston contains liquid water in equilibrium with water vapour at 25°C. Which one of the following operations results in a decreace in the equilibrium vapour pressure ?
A reaction with respect to the reactant A has a rate constant of 5 s⁻1. If we start with[A]= 10 mol-L⁻1, then in what time the concentration of A becomes 1.0 mol-L⁻1?
Which of the following has highest first ionization potential?
Which of the following compound contains both the oxidiser and the fuel elements in the same molecule?
Of the five isomeric hexane,the isomers which can give two monochlorimated compound is
The pH of aqueous KCl solution is 7.0. This solution was electrolysed for a few seconds using Pt electrodes. Which of the following is correct?
The reaction 1/2 H₂(g) + AgCl(s) → H⁺(aq) + Cl- (aq) + Ag(s) occurs in the galvanic cell
Which of the following has the highest conductivity?
A metal X on heating in nitrogen gas gives Y. Y on treatment with H₂O gives a colourless gas which when passed through CuSO₄ solution gives a blue colour. Y is
1-Chlorobutane on reaction with alcoholic potash gives