The pH of fresh milk is 6. When it turns sour, the pH
Two reactants in a flask produce bubbles and gas; it turns lime water into milky. The reactants in the flask are
Metalloids are
Turmeric (Haldi) rapidly becomes colourless on addition of
A gas is evolved when a piece of zinc metal placed in dilute sulphuric acid (H2SO4). What is the gas?
Biogas consists of mainly