International year of soil

Which of the following elements has the highest electronegativity.

An element has an atomic number of 17 and a mass number of 36. How many neutrons are in its nucleus?

Which of the Following is not the Ore of Aluminium ?

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

Identify the thermodynamic process in which no heat exchange occurs with the surroundings.

_______is the purest form of Carbon found in Nature.

______ is defined as the number of moles of solute per litre of solution.

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

What type of substance is commonly used as a thermometric material due to its responsiveness to temperature changes?

Which of the following is not the Ore of Aluminium?