The Preamble got amended how many

ELISA is based on the principle of :

The yellow color of human urine is due to:

Which catalyst is used for the synthesis of H₂ SO₄  by Lead-Chamber process?

The plant cell wall is primarily composed of what?

In the names Mangifera indica (mango), Solanum tuberosum (potato), and Panthera leo (lion), what do the names indica, tuberosum, and leo represent?

Kidney stones are primarily composed of which substance?

Which one of the following is not associated with megasporangium ? 

Which disease is characterized by a loss of bone density? 

‘Rosie’ the transgenic cow was developed to:

For the process of photosynthesis, which of the following gases is required during the day?