How the active gibberellin GA1 is inactived by?

a)  By hydroxylation remove GA20 from the biosynthetic pathway by converting it to GA1

b) conversion to GA8 by a hydroxylation on carbon 2

c) By hydroxylation remove GA20 from the biosynthetic pathway by converting it to GA29

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#Question id: 20033

#XL - P Chemistry

The mass of one mole of electron is

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#Question id: 20034

#XL - P Chemistry

In two H atoms A and 13 the electrons move around the nucleus in circular orbits of radius r and 4r respectively. The ratio of the times taken by them to complete one revolution is

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#Question id: 20035

#XL - P Chemistry

For the electronic transition from n = 2 to n = 1 which one of the following will produce shortest wave length?

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#Question id: 20036

#XL - P Chemistry

The energy required to dislodge electron from excited isolated H atom (IE1 = 13.6eV) is

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#Question id: 20037

#XL - P Chemistry

Velocity of electron in the first orbit of H-atom is compared to that of velocity of light is approximately

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#Question id: 20038

#XL - P Chemistry

How many electrons in Cu atom have (n + ) = 4