KVPY Government Jobs Exams

In the DNA of E. Coli the mole ratio of adenine to cytosine is 0.7. If the number of moles of adenine in the DNA is
350000, the number of moles of guanine is equal to –
(A) 350000 (B) 500000 (C) 225000 (D) 700000

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KVPY Other Question

In a food chain such as grass → deer → lion, the energy cost of respiration as a proportion of total assimilated
energy at each level would be –
(A) 60% - 30 % - 20% (B) 20% - 30 % - 60% (C) 20% - 60 % - 30% (D) 30% - 30 % - 30% A metal is irradiated with light of wavelength 660 nm. Given that the work that the work function of the metal is
1.0 eV, the de Broglie wavelength of the ejected electron is close to