19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
An aqueous solution of sodium carbonate is alkaline because sodium carbonate is a salt of
The aqueous solution of ammonium chloride is
The pH of 0.1 M solution of the following salts increases in the order :
Aqueous solution of sodium acetate is
A white salt is readily soluble in water and gives a colourless solution with a pH of about 9. The salt would be
A weak acid, HA has a Ka of 1.00 10 x . If 0.100 mole of this acid is dissolved in 1 L of water, the percentage of acid dissociated at equilibrium is closest to
The conjugate base of NH2 – is
Cl – is the conjugate base of
The correct order of acid strength is
Conjugate base of NH3 is (a) NH (b) NH (c) NH
The conjugate acid of HPO4 2– is
Review the equilibrium and choose the correct statement HClO4 + H2O H3O + + ClO4 –
Of the given anions, the strongest Bronsted base is
The conjugate base of a weak acid is
According to Lowry and Bronsted system, the chloride ion (Cl–) in aqueous solution is a
According to Lewis concept, acid is
The conjugate base of HPO is (a) PO (b) H PO
In the reaction I I I -> the Lewis’s base is
BF3 is acid according to
Which of the following is not Lewis’s acid ?
The strongest conjugate base is (a) NO
Which of the following molecules acts as Lewis acid?
Which one of the following molecular hydrides acts as a Lewis’s acid?
Which of the following is least likely to behave as Lewis’s base?
Arrange NH ,H O,H O ,HF and OH in increasing order of acidic nature. (a) H O NH HF OH H O (b) NH HF H O H O OH (c) HO H O NH HF H O (d) H O HF H O NH OH