Question

Smith wrote the following statements incorrectly. Insert a word to correct the statements. (a) Lead bromide conducts electricity. (b) Copper reacts with nitric acid to form nitrogen dioxide gas. (c) Bromoethane reacts with sodium hydroxide to produce ethanol and sodium bromide.

Match the Column A (showing the properties of H2SO4) with Column B (showing the reaction of H2SO4)

Choose the correct answers to the questions from the given options. (Do not copy the questions, write the correct answers only.)

When concentrated sulphuric acid is added to sugar, a black mass of carbon is formed. This shows that the acid is: