The process of beating harvested crops to separate seeds from the stalks is called?

Which of the following types of glasses is used for making optical instruments?

Date of manufacture of food items fried in oil should be checked before buying because oils become rancid due to

Which of the following gases is supporter of combustion?

Potato is a modified

What is the name of the rover that landed on Mars on 18th February 2021 by NASA.

For which discovery, C.V. Raman got nobel prize in 1930?

Who is considered as the 'founding father' of Indian Space Program?

Which element is a liquid at ordinary temperature?

Crude oil, natural gas and coal are the examples of

Name a clinical trial in which blood is transfused from recovered COVID-19 patients to a coronavirus patient who is in critical condition?

Bleeding of gums, falling of teeth, fragile bones and delayed wound healing occur due to the deficiency of which one of the following vitamins?

Bose-Einstein condensate is a

The SI unit of mechanical energy is