Loading...
Choose the letters L, M, N, O & P to match the description (a) to (c) given below: [L – Ammonia, M – Nitrogen, N – Hydrogen sulphide, O – Hydrogenchloride gas, P – Nitrogen dioxide] (a) When this gas comes in contact with ammonia dense white fumes are seen. (b) The gas that turns moist lead acetate paper silvery black. (c) The gas produced on heating lead nitrate.
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)
(i) Write the equation for the catalytic oxidation of ammonia in Ostwald's process, naming the catalyst. (ii) Why does concentrated nitric acid turn yellowish on standing?
When concentrated sulphuric acid is added to sugar, a black mass of carbon is formed. This shows that the acid is:
© 2026 PadhAiPro. This question is provided for educational purposes.
