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Class 10 · Science · Easy
→Why are bubbles formed when baking soda is added to lemon juice?
Class 10 · Science · Easy
→Which observation suggests that a base may be present in a solution?
Class 10 · Science · Medium
→Why does mixing equal volumes of an acid and a base not always produce a neutral solution?
Class 10 · Science · Medium
→How does the pH change when hydrochloric acid is gradually added to sodium hydroxide solution?
Class 10 · Science · Medium
→If blue litmus turns red in a solution and phenolphthalein remains colourless, what is the nature of the solution?
Class 10 · Science · Medium
→Why are copper or brass vessels not considered suitable for storing sour substances in the kitchen?
Class 10 · Science · Medium
→Which pair gives the correct salt and its use?
Class 10 · Science · Medium
→Which pair correctly matches an acid with its natural source?
Class 10 · Science · Easy
→What is the colour of methyl orange in acidic solution and why is it useful?
Class 10 · Science · Medium
→Why can all alkalis be called bases, but all bases cannot be called alkalis?
Class 10 · Science · Easy
→Which statement about bases is the most correct?
Class 10 · Science · Easy
→Which statement about acids is the most correct?
Class 10 · Science · Medium
→How does acid rain damage marble buildings?
Class 10 · Science · Medium
→What is the main harm when acidic waste is released directly into water bodies?
Class 10 · Science · Medium
→A student added acid to a metal carbonate and passed the gas through lime water. What is the correct observation?
Class 10 · Science · Easy
→Why does effervescence occur when acid is added to sodium hydrogen carbonate?
Class 10 · Science · Easy
→What else is formed along with salt when hydrochloric acid reacts with sodium carbonate?
Class 10 · Science · Medium
→Which gas is produced at the anode in the chlor-alkali process?
Class 10 · Science · Medium
→Which gas is produced at the cathode in the chlor-alkali process?
Class 10 · Science · Medium
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