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Class 10 · Science
→An aqueous sugar solution does not make a bulb glow, while an acidic solution does. What is the correct reason?
Class 10 · Science
→Between equal concentration solutions of hydrochloric acid and ethanoic acid, which will have higher electrical conductivity?
Class 10 · Science
→Which statement about a strong acid and a concentrated acid is correct?
Class 10 · Science
→Plaster of Paris is formed by controlled heating of gypsum. The main change is related to what?
Class 10 · Science
→What is the most correct reason for keeping plaster of Paris away from moisture?
Class 10 · Science
→White anhydrous copper sulphate turns blue in the presence of water. In which test is this useful?
Class 10 · Science
→When blue copper sulphate is heated, a white solid is formed. This change occurs due to the loss of what?
Class 10 · Science
→Why is zinc oxide called amphoteric?
Class 10 · Science
→Which oxide can react with both acids and bases?
Class 10 · Science
→Non-metal oxides can form acidic solutions in water. Which of the following is an example?
Class 10 · Science
→A metal oxide reacts with an acid to form salt and water. Which nature does this show?
Class 10 · Science
→Why is sodium chloride solution generally considered neutral?
Class 10 · Science
→A sodium carbonate solution can turn red litmus blue. What type of salt is it?
Class 10 · Science
→An aqueous solution of ammonium chloride can turn blue litmus red. What is the reason?
Class 10 · Science
→If a salt solution has no effect on either blue or red litmus paper, what may be its approximate pH?
Class 10 · Science
→Which is the correct group of three main products obtained in the chlor-alkali process?
Class 10 · Science
→Which process is used to obtain sodium hydroxide from common salt?
Class 10 · Science
→Due to which property is bleaching powder used in water purification?
Class 10 · Science
→How does washing soda help in softening hard water?
Class 10 · Science
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