Which event did Union Minister Annapurna Devi launch at

Which material is used as a moderator in a nuclear power plant that slows down the neutrons and makes them fit for causing fission?

Aqua regia, which can dissolve gold, is a freshly prepared mixture of concentrated hydrochloric acid and concentrated ______.

Which of the following rock is not a sedimentary rock?

_____________ has the maximum attraction force between the molecules.

What is the physical state of water at 250⁰ C?

What is the chemical formula of Urea, the best nitrogenous fertilizer?

Which gas is most abundant in the Earth's atmosphere.

Which fossil fuel is formed under earth by the decomposition of vegetable matter lying under water by anaerobic bacteria in the absence of oxygen?

What components make up the mixture known as Producer gas?

Which gas is the chief component of Bio-gas?