Potassium nitrate has pH value equl to…………… .

Classify the following as amorphours or crystalline solids: Naphthalene Teflon Polyurethane Benzoic acid Potassium nitrate Cellophane Polyvinyl chloride Fibre glass Copper Zinc sulphide.

Classify the following as amorphous or crystalline solids: Polyurethane, naphthalene, benzoic acid, teflon, potassium nitrate, cellophane, polyvinyl chloride, fibre glass, copper.

How will ozone oxidise the following : Potassium nitrite to potassium nitrate.

Mixture of potassium nitrate, sulphur and charcoal used as an explosive.

Describe the following statement- An explosive is made up of Potassium nitrate, sulphur and charcoal.

What is ph value of neutral solution?

Pragya tested the solubility of three different substances at different temperatures and collected the data as given below (results are given in the following table, as grams of substance dissolved in 100 grams of water to form a saturated solution). What mass of potassium nitrate would be needed to produce a saturated solution of potassium nitrate in 50 grams of water at 313 K ?

Explain the term ‘pH value’.