Turmeric (Haldi) rapidly becomes colourless on addition of
Turmeric changes its colour to red on addition of a basic solution (baking soda) but its colour does not change on addition of acidic or neutral solution (vinegar, lemon juice or alcohol). Hence no correct answer.
A gas is evolved when a piece of zinc metal placed in dilute sulphuric acid (H2SO4). What is the gas?
Biogas consists of mainly
Oxygen on reaction with non-metals forms oxides, which are
The pH of the solution obtained by dissolving pure sodium chloride in water is
A mixture of sodium chloride and naphthalene can be separated by
