Class 12th

The one that is not expected to show isomerism is:

An organic compound 'A' (C?H?O) when treated with conc. HI undergoes cleavage to yield compound 'B' and 'C'. 'B' gives yellow precipitate with AgNO? where as 'C' tautomerizes to 'D'. 'D' gives positive iodoform test. 'A' could be:

A plane passing through the point (3,1,1) contains two lines whose direction ratios are 1, -2, 2 and 2, 3, -1 respectively. If this plane also passes through the point (α, -3, 5), then α is equal to

Amongst the following statements regarding adsorption, those that are valid are:
(a) ΔH 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.

Arrange the following labelled hydrogens in decreasing order of acidity:

Let a, b, c ∈ R be all non-zero and satisfy a³ + b³ + c³ = 2. If the matrix A = [a, b, c; b, c, a; c, a, b] satisfies A?A = I, then a value of abc can be

The major product of the following reaction is:

The results given in the below table were obtained during kinetic studies of the following reaction: 2A + B → C + D
2A + B → C + D

X and Y in the given table are respectively:

Cast iron is used for the manufacture of:

The major product obtained from E?-elimination of 3-bromo-2-fluoropentane is