Which of the following noble gases is not obtained via fractional distillation?

Which of the following scientists first prepared hydrogen chloride by heating common salt with sulphuric acid?

What happens to the size of atoms of elements of p-block as we move from left to right in the same period?

What is the hybridization of phosphorus in PCl5?

Which of the following is true about sulphuric acid?

Which reagent is used in qualitative testing for presence of sulfur dioxide?

What is the boiling point of hydrogen chloride?

Which of the following scientists first discovered helium in the solar spectrum during a total solar eclipse?