राजभाषा नियम

What two acids are mixed to prepare Aqua Regia, used by goldsmiths?

Which statement is NOT correct regarding Zinc-ion batteries?

Which of the following gas is used to fill balloons.

Which substance is commonly used as a thermometric material in thermometers due to its expansive properties under temperature changes?

Which substance is present in green leaves to help in the process of photosynthesis?

Which catalyst is used in the hydrogenation of vegetable oils to make ghee?

Which of the following is NOT a base?

Which of the following is the sweetest sugar?

Litmus paper, used to test pH levels, is derived from which organism?

Which of the following colour of white light has the maximum wavelength?