Arrange the following in order of increasing acidity
A. o-nitrobenzoic acid
B. p-nitrobenzoic acid
C. p-hydroxybenzoic acid
D. benzoic acid

Of the following which is the product formed when cyclohexanone undergoes aldol condensation followed by heating?

Among the following amines, the strongest Bronsted base is _____________

The order of basic strength of amines in aqueous solution is

Benzene diazonium chloride when reacts with hypophosphorus acid produces

Hardness of water is estimated by simple titration with Na₂ - EDTA because

Which of the following compounds is used as the starting material for the preparation of potassium dichromate?

The variability of oxidation state

What reagent is used in Hinsberge test of amines?

Positive carbylamine test is shown by

On heating an aliphatic primary amine with chloroform and ethanolic potassium hydroxide, the organic compound formed is

The total number of structural isomers possible for an amine with molecular formula C₄H₁₁N is

Through which of the following reactions number of carbon atoms can be increased in the chain ?

The correct order of increasing acidic strength is ________________.

Mohr salt, FeSO₄, (NH₄)₂SO₄. 6 H₂ O, is preferred over FeSO₄. 7 H₂O for standardization of KMnO₄ solution because.

In the nitration of benzene using a mixture of conc. H₂SO₄ and conc.HNO₃, the species which initiates the reaction is......................... .

A red solid is insoluble in water. However, it becomes soluble if some KI is added to water. Heating the red solid in a test tube results in liberation of some violet coloured fumes and droplets of a metal appear on the cooler parts of the test tube. The red solid is

Reason of lanthanoid contraction is 

The coloured spot of KMnO₄ on any article can be bleached by 

When manganous salt is fused with a mixture of KNO₃ and solid NaOH, the oxidation number of Mn changes from +2 to

Among the oxides, Mn₂O₇ (I), V₂O₃(II),V₂O₅ (III),CrO (IV) and Cr₂O₃ (V), the basic oxides are

Propinic acid with Br₂/P yields a dibromo product. Its structure would be

Among the followig compounds, the one(s) that gives effervescence with aqueous NaHCO₃ solution is (are)
I. (CH₃CO)₂O
II. CH₃COOH
III. PhOH
IV. CH₃COCHO

Identify the optically active compounds from the following :

Which of the following complexes are heteroleptic ?

Which of the following complexes are homoleptic ?

A coordination complex compound of cobalt has the molecular formula containing four ammonia molecules, one nitro group and two chlorine atoms. A solution of this complex was prepared by dissolving 2.44 g of it in water and making the volume to 200 mL. Excess of AgNO₃ solution was then added to it and the precipitate of AgCl formed was filtered and dried. The weight of AgCl thus obtained was found to be 1.435 g (Atomic mass of Co = 59, Ag = 108]
The formula of the complex would be

Which one of the following is a homoleptic complex?

Which of the following is an outer orbital complex? 

KMnO₄, oxidation number of Mn is