Study of Compounds-I Hydrogen Chloride — Chemistry STD 10 — Question

Name :
Two colourless gases which when mixed produce a white solid.

What is the main constituent of vinegar?

Give reasons as to why - The oxidising power of elements increases on moving from left to right along a period in periodic table

Name the two gases that are combined during the contact process.

Among Zn and Cu, which would occur more readily in nature as metal and which as ion?

A solution has a pH of 7. Explain, how you would:
Decrease its pH, If a solution changes the color of litmus from red to blue, what can you say about its pH?

An ore on being heated in air forms sulphurous anhydride. Write the process used for the concentration of this ore.

Explain the following:
Electrovalent compounds are usually hard crystals.

Give balanced reactions for the following conversion:
Ammonia to nitrogen using oxygen.