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The pressure of a moist gas at \( 27^\circ \text{C} \) is \( 4 \, \text{atm} \). The volume of the container is doubled at the same temperature. The new pressure of the moist gas is _______ \( \times 10^{-1} \, \text{atm} \). (Nearest integer)
(Given : The vapour pressure of water at \( 27^\circ \text{C} \) is \( 0.4 \, \text{atm} \))

Number of electrophilic centres in the given compound is ____________

In the given reaction sequence, the major product 'C' is:

Which among the following is the strongest Bronsted base?

Arrange the following in increasing order of reactivity towards nitration.
(a) p-xylene (b) bromobenzene (c) mesitylene (d) nitrobenzene (e) benzene
Choose the correct answer from the options given below.

Major product of the following reaction is:

The correct decreasing order of priority of functional groups in naming an organic compound as per IUPAC system of nomenclature is:

The stable carbocation formed in the above reaction is:

In the estimation of bromine, \( 0.5 \, \text{g} \) of an organic compound gave \( 0.40 \, \text{g} \) of silver bromide. The percentage of bromine in the given compound is ________% (nearest integer) (Relative atomic masses of \( \mathrm{Ag} \) and \( \mathrm{Br} \) are \( 108 \, \text{u} \) and \( 80 \, \text{u} \), respectively).