The radius of first Bohr orbit is , then de-Broglie wavelength of electron in 3rd orbit is nearly

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#Question id: 8864

#XL - R Botany

Corals are most closely related to which group?

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#Question id: 8929

#XL - R Botany

An obsolete taxon, the ʺRadiata,ʺ included all phyla whose adults had true radial symmetry. Today, the ʺRadiataʺ is more correctly considered to be

1. a clade.

2. a grade.

3. monophyletic.

4. paraphyletic.

5. polyphyletic.

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#Question id: 20032

#XL - P Chemistry

If threshold wavelength for ejection of electron from metal is 300nm, then work function for photoelectric emission is

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#Question id: 14966

#XL - S Microbiology

The bacterial cell wall is composed of a macromolecular network called peplidoglycan (also known as murein) which is present either alone or in combination with other substances

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#Question id: 10519

#XL - R Botany

Which of the following toxins derived from the fungus Cochliobolus carbonum inhibits specific histone deacetylases in maize?