Muft Shiksha
Update

Muft Shiksha™ एक 100% Free Education Portal है 🇮🇳, जिसका उद्देश्य Class 9–12 के हर विद्यार्थी तक High-Quality Education को पूरी तरह मुफ्त पहुँचाना है। 🇮🇳 हम मानते हैं कि अच्छी शिक्षा किसी student की आर्थिक स्थिति पर निर्भर नहीं होनी चाहिए। 🇮🇳 हर विद्यार्थी को वही Quality Study Material, MCQs, Quizzes, Exam Preparation, Concept-Based Learning और Bilingual Support मिलना चाहिए, जो आमतौर पर महंगी Coaching या Premium Platforms में मिलता है। Muft Shiksha™ 🇮🇳 इसी सोच के साथ बनाया गया है

Subjects

Science

Acids, Bases, and Salts

अम्ल, क्षारक और लवण

In Class 10 Science, under the chapter Chemical Substances – Nature and Behaviour, students study acids, bases, and salts through their properties, reactions, and everyday examples. The topic explains how these substances behave with indicators and with one another, including neutralisation, and introduces the formation and practical importance of common salts.

Practice questions

Two acids have the same concentration. The first has pH 2 and the second has pH 5. Which statement is correct?In which case is an acidic solution most likely to have the highest electrical conductivity?Zinc can give hydrogen gas with both acid and sodium hydroxide. What kind of behaviour does this indicate?Why would it be wrong to call aluminium oxide only a basic oxide?The reaction between calcium oxide and carbon dioxide forms a compound. What nature does this illustrate?Why does the basicity decrease when carbon dioxide is passed through sodium hydroxide solution?Which pair will form salt and water but generally no gas?In which reaction are salt, water, and carbon dioxide all definitely formed?An unknown solid gives a gas with acid. The gas turns lime water milky and the milkiness disappears on passing excess gas. What is likely present in the solid?Which solution is most likely to have the highest concentration of hydroxide ions?The pH of an acidic solution changes from 3 to 6. Which conclusion is correct?Which change can bring the pH of a basic solution close to 7?Why does an acid not immediately become a base when diluted with a large amount of water?Why is it dangerous to add water to a concentrated acid during dilution?Aqueous sodium chloride solution shows no change with red or blue indicator paper. What is the reason?Why is sodium carbonate solution basic?Ammonium chloride solution can turn blue indicator paper red. What is the correct reason?Which salt solution is likely to have a pH greater than 7?Which salt solution is likely to have a pH less than 7?Blue copper sulphate crystals become white on heating and turn blue again on adding water. What does this prove?