Periodic Properties And Variation Of Properties Physical And Chemical — Chemistry STD 10 — Question

If the participating atoms in a chemical reaction are a metal and a non-metal, the compound so formed has ________ boiling point. (higher/lower)

For artificial ripening of fruits _________is used.

__________ compounds generally are soluble in water and insoluble in organic solvents.

________ chromatography is a technique used to separate components of a mixture based on their different interactions with a stationary phase and a mobile phase.

Correct the following:
A reddish brown precipitate is obtained when ammonium hydroxide is added to ferrous sulphate.

Fill in the blanks :
Substances which conduct electricity in the solid-state are generally ………........ 

The sulphur compound used for the identification of several cations is _______ .

The gas produced by the action of concentrated sulphuric acid on sodium chloride is _______ .

The colour of hydrated copper sulphate is ________. [light blue/black/white]

When the participating atoms in a chemical reaction are two ________ a covalent bond is formed. (metals/non-metals)