Tyndall effect is observed when:

Amongst the following statements regarding adsorption, those that are valid are (a) $$\Delta$$H becomes less negative as adsorption proceeds (b) On a given adsorbent, ammonia is adsorbed more than nitrogen gas (c) On adsorption, the residual force acting along the surface of the adsorbent increases (d) With increase in temperature, the equilibrium concentration of adsorbate increases

Which of the following is used for the preparation of colloids?

A mixture of gases O2, H2 and CO are taken in a closed vessel containing charcoal. The graph that represents the correct behaviour of pressure with time is :

For the following Assertion and Reason, the correct option is Assertion : For hydrogenation reactions, the catalytic activity increases from Group 5 to Group 11 metals with maximum activity shown by Group 7-9 elements. Reason : The reactants are most strongly adsorbed on group 7-9 elements.

As per Hardy-Schulze formulation, the flocculation values of the following for ferric hydroxide sol are in the order :

An organic compound ‘A’ (C9H10O) when treated with conc. HI undergoes cleavage to yield compounds ‘B’ and ‘C’. ‘B’ gives yellow precipitate with AgNO3 where as ‘C’ tautomerizes to ‘D’. ‘D’ gives positive iodoform test. ‘A’ could be

The major product of the following reaction is :

The major product [R] in the following sequence of reactions as :

The major product [B] in the following reactions is :

When neopentyl alcohol is heated with an acid, it slowly converted into an 85 : 15 mixture of alkenes A and B, respectively. What are these alkenes?

Consider the following reaction : The product 'P' gives positive ceric ammonium nitrate test. This is because of the presence of which of these –OH group(s)?

The major aromatic product C in the following reaction sequence will be :

The major product of the following reaction is :

The correct order of stability for the following alkoxides is :

Arrange the following compounds in increasing order of C–OH bond length : methanol, phenol, p-ethoxyphenol

The major product of the following reaction is :

Among the compounds A and B with molecular formula C9H18O3 , A is having higher boiling point the B. The possible structures of A and B are :

A, B and C are three biomolecules. The results of the tests performed on them are given below: $$\begin{array}{llll}& \begin{array}{l}\text{ Molisch’s }\\ \text{ Test }\end{array}& \begin{array}{l}\text{ Barfoed }\\ \text{ Test }\end{array}& \begin{array}{l}\text{ Biuret }\\ \text{ Test }\end{array}\\ \text{ A }& \text{ Positive }& \text{ Negative }& \text{ Negative }\\ \text{ B }& \text{ Positive }& \text{ Positive }& \text{ Negative }\\ \text{ C }& \text{ Negative }& \text{ Negative }& \text{ Positive }\end{array}$$ A, B and C are respectively :

If you spill a chemical toilet cleaning liquid on your hand, your first aid would be