Search questions
Choose which content to search, then combine terms with AND or OR.
Class 10 · Science · Easy
→What colour does phenolphthalein become in a basic solution?
Class 10 · Science · Easy
→Which method is safest for diluting concentrated sulphuric acid in a laboratory?
Class 10 · Science · Easy
→What colour does methyl orange become in a basic solution?
Class 10 · Science · Easy
→What happens to the colour of moist blue litmus paper when it is exposed to hydrogen chloride gas?
Class 10 · Science · Easy
→How can organic matter help improve basic soil?
Class 10 · Science · Easy
→Which of the following salts is known to form a neutral solution in water?
Class 10 · Science · Easy
→Acid rain is generally considered to have pH below which value?
Class 10 · Science · Easy
→A student chooses a substance to relieve acidity by neutralising excess hydrochloric acid in the stomach. Which of the following is suitable?
Class 10 · Science · Easy
→Which gas is formed at the cathode in the chlor alkali process?
Class 10 · Science · Easy
→A student tests an aqueous solution with a universal indicator and observes a green colour. The student says that the solution is acidic. What is the correct correction to this statement?
Class 10 · Science · Easy
→Which substance should a farmer add to acidic soil to reduce its acidity?
Class 10 · Science · Easy
→Which of the following salts forms a neutral aqueous solution?
Class 10 · Science · Easy
→Which of the following substances produces hydroxide ions \(OH^-\) when dissolved in water?
Class 10 · Science · Easy
→Which gas is produced when sodium hydrogen carbonate NaHCO₃ is heated?
Class 10 · Science · Easy
→Which of the following salts shows a basic nature in its aqueous solution?
Class 10 · Science · Easy
→What happens when water is added to white anhydrous copper sulphate?
Class 10 · Science · Easy
→Which of the following substances forms an aqueous solution that turns blue litmus paper red?
Class 10 · Science · Easy
→What is the water present in gypsum called?
Class 10 · Science · Easy
→Which of the following substances should a student recommend adding to acidic soil to reduce its acidity?
Class 10 · Science · Easy
→