Heat of neutralisation of weak acid and strong base is less than the heat of neutralisation of strong acid and strong base due to

A. Energy has to be spent for the total dissociation of weak acid

Heat of neutralisation of weak acid and strong base is less than …

The element with atomic number $55$ belongs to

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Attack of electrophile on benzene results in the formation of :

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Photoelectric effect established that light

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The number of $\sigma$ bonds, $\pi$ bonds and lone pair of electrons in pyridine, respectively are:

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$\Delta U$ is equal to

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In following reaction$yMnO_4^ - + x{H^ + } + {C_2}O_4^ - \to yM{n^{ + + }} + 2C{O_2} + \frac{x}{2}{H_2}O$, $x $ and $y $ are

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A sample of phosphorus trichloride $(PC{l_3})$ contains $1.4$ moles of the substance. How many atoms are there in the sample

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Which species has the maximum number of lone pair of electrons on the central atom?

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The reaction sequence($s$) that would lead to $o$-xylene as the major product is (are)

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Which of the following represent the chemical name and formula of caustic soda?

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