Search questions
Choose which content to search, then combine terms with AND or OR.
Class 10 · Science · Medium
→A student says sodium chloride is neutral, so its solution will not have ions. Why is this wrong?
Class 10 · Science · Medium
→If a solution can damage tooth enamel, in which pH range is it more likely to be?
Class 10 · Science · Medium
→A substance gives carbon dioxide with acid and forms a basic solution in water. Which substance is most suitable?
Class 10 · Science · Hard
→Why can sodium hydroxide pellets become wet and then less pure in open air?
Class 10 · Science · Medium
→Phenolphthalein is colourless and methyl orange is red in a solution. What is the nature of this solution?
Class 10 · Science · Hard
→Gypsum forms plaster of Paris on controlled heating. Why is excessive heating a problem?
Class 10 · Science · Medium
→By which test can the gas formed at the cathode in the chlor-alkali process be identified?
Class 10 · Science · Medium
→A gas turns moist blue litmus red but has no effect on dry blue litmus. What does this prove?
Class 10 · Science · Medium
→Which is the safe method for mixing acid with water?
Class 10 · Science · Hard
→If an acid is less electrically conducting than another acid of the same concentration, what is the most appropriate conclusion?
Class 10 · Science · Hard
→An acid is added to a white solid and a gas evolves that turns lime water milky. Excess of the same gas removes the milkiness. What is the final soluble substance?
Class 10 · Science · Medium
→An unknown salt solution shows pH 8.5 and turns red litmus blue. What type of salt is it most likely to be?
Class 10 · Science · Hard
→An acidic solution has pH 4. If it is made one thousand times less acidic, what will be the approximate new pH?
Class 10 · Science · Medium
→In an experiment, solution A turns blue litmus red and solution B turns red litmus blue. When mixed in suitable amounts, the temperature rises slightly. This proves which reaction?
Class 9 · General Knowledge · Medium
→How do self-management skills help in future work life?
Class 9 · General Knowledge · Easy
→What image does punctuality create for a student?
Class 9 · General Knowledge · Easy
→Why is self-care necessary during exam days?
Class 9 · General Knowledge · Easy
→What becomes clear by keeping a time record?
Class 9 · General Knowledge · Easy
→What is the main benefit of keeping a study place organised?
Class 10 · Science · Medium
→