1 watt - `overset(?)___` .

1 kilowatt = overset(?)_ watt

1 kilowatt-hour = overset(?)_ Joule?

1 unit = overset(?)_ kilowatt-hour?

1 horsepower = overset(?)_ watt

1 kilo ampere = overset(?)_ Ampere?

1 volt = overset(?)- esu of potential?

1 emu of current strength = overset(?)_ Ampere?

The frequency of X-ray of wavelength 1 overset@A is (1 overset@A = 10^(-10)m)

In the reaction A overset(HBr)rarrB overset(AlcKOH)underset(Delta)rarrC overset(O_3CCl_4)underset(Zn_1H_2O)rarrHCHO+CH_3CHO the compound A is :

Find the hybridisation of the * marked element in the following compound. overset(*) PCl_5,overset(*) COCl_2,overset(*)SO_3^(2-) & overset(*)NH_4^(o+) .