The number of sigma and pi (π) bonds present in benzene respectively are :

The number of pπ - dπ 'pi' bonds present in XeO₃and XeO₄molecules, respectively are

The hydrolysis constant K_h of a salt of NaOH and a weak acid (HX) If the K_a of the acid is K_a=2x10^-6

Which among the following element does not liberate H₂ gas on reaction with NaOH?

An organic compound X on treatment with pyridium dichromate in dichloromethane gives compound Y.Compound Y reacts with I₂ and alkali to form idoform.The compound X is

HCl+H₂O?H₃O⁺+Cl^-

A Conjugate base of HCl is Cl^-

B Conjugate base of H₃O⁺ is H₂O

C Conjugateacid base pair is HCl and H₃O⁺

D Conjugateacid base pair is Cl^- and H₂O

For the reversible reaction C₂H₄ + H₂ ⇔ C₂H₆ the equilibrium constant can be expressed in units of

The conjugate base of HSO₄^- ion is:

The charge required to reduce 1 mole Cr₂O₇^-2 to Cr⁺³ ions is

The oxidation states of nitrogen in NH₄NO₃ is /are