Two  pairs of antennae are present in

The speed of light is maximum in which of the following media?

Which of the following mixture is burnt to produce very high temperatures and are used for cutting metals and for

welding?

The Planck constant is used to:

Overconsumption of which nutrient is most directly linked to obesity?

Stars in the sky appear to twinkle due to –

What type of immunity is provided by vaccination?

Which of the following transitions in hydrogen atom will result in emission of radiation of longest wavelength?

What is the function of white blood cells (WBCs)?

What are diatoms?

Which disease is caused by a virus?