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H2 gas can be converted to H1s1 atoms by 

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By Expert Faculty of Sri Chaitanya
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a
5000 K temperature
b
U.V. radiations
c
Silent electric arc
d
All of these
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detailed solution

Correct option is D

H2 dissociates to H (1s1) atoms at 5000 K temperature, by silent electric arc between tungsten electrodes and by U.V. radiations to the extent of 95.5%.  At 2000 K, this dissociation is only about 0.081%.

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