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Time taken for an electron to complete one revolution in the Bohr orbit of hydrogen atom is: (1) 4 Π mr 2 / nh (2) nh/ 4Π 2 mr (3) nh/ 4Π 2 mr 2
Write conditions and reactions for the following conversions: (i) Chloroform into diethylcarbonate (ii) Phenol into salicylic acid (iii) 2-propanone into 2-inethyl-2-prop
a. 'Hormones are chemical messengers.' Explain? b. Name the main disease caused due to lack of the vitamin and its source in each of the following: A, B 6 and E.
What is meant by ''mass number''
just explain a little bite of its sequence that why uranium is used
Depression in freezing point - Physical methods for Non-volatile substances Mol. Mass = (1000 K f * w) /W* ΔT Where, K f stands for Molal depression constant of the solve
The nucleus of tritium contains: (1) 1 proton + 1 neutron (2) 1 proton + 3 neutron (3) 1 proton + 0 neutron (4)1 proton + 2 neutron An
the diagnal relationship in periodic table
The total number of electrons that can be accommodated in all the orbitals having principal quantum number 2 and azimuthal quantum number 1 is: (1) 2 (2) 4
Upward and downward pressure are the same at any given depth Get a glass cylinder at least 15 cm long and 4 cm in diameter. Such a length of tube can be made from a straight-si
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