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Class 10 · Science
→A dilute acid gives gas with a metal, but the same acid generally gives no gas with copper. What is the main reason?
Class 10 · Science
→Why can sodium hydrogen carbonate be considered a useful antacid in excess acidity?
Class 10 · Science
→If the pH of a basic solution decreases from 13 to 10, what happens to its basicity?
Class 10 · Science
→A student takes equal amounts of two acids. The first ionises completely and the second ionises partially. Which is more likely to have a lower pH?
Class 10 · Science
→An unknown solution turns red litmus blue and forms a white precipitate when carbon dioxide is passed through it. Which substance is most likely present in the solution?
Class 9 · General Knowledge
→If a student gets angry repeatedly, what should be done first?
Class 9 · General Knowledge
→Why is staying calm during a problem important in self-management?
Class 9 · General Knowledge
→When a person expresses emotions appropriately instead of suppressing them, what does it indicate?
Class 9 · General Knowledge
→If a student records progress after completing work, what is this an example of?
Class 9 · General Knowledge
→Accepting constructive feedback strengthens which skill?
Class 9 · General Knowledge
→What is the correct meaning of self-reflection in self-management?
Class 9 · General Knowledge
→In which situation does a student show good self-control?
Class 10 · Science
→A student says all salts are neutral. Which answer correctly evaluates this statement?
Class 10 · Science
→Why can acid rain water be harmful for aquatic organisms?
Class 10 · Science
→A dilute acid is added to a white solid, producing a gas that turns lime water milky. What could the white solid be?
Class 10 · Science
→If pH is less than 7 but not very close to zero, what is the most balanced conclusion about the solution?
Class 10 · Science
→Why is sodium carbonate used to soften hard water?
Class 10 · Science
→An acid reacts with a metal to produce a gas that gives a pop sound near a burning splint. Which gas is it?
Class 10 · Science
→Which option contains a group of basic substances?
Class 10 · Science
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