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Class 10 · Science
→Which pair contains two substances of basic nature?
Class 10 · Science
→Why does a turmeric stain become reddish-brown when soap is applied?
Class 10 · Science
→What change occurs when red litmus is added to a sodium hydroxide solution?
Class 10 · Science
→How does an antacid give relief during stomach irritation due to excess acidity?
Class 10 · Science
→A bee sting contains an acidic substance. Which substance is more suitable to reduce the pain?
Class 10 · Science
→When proper amounts of an acid and a base are mixed, which reaction mainly occurs?
Class 10 · Science
→Why does dry hydrogen chloride gas not turn dry blue litmus paper red?
Class 10 · Science
→In which condition will an acid show its acidic behavior most clearly?
Class 10 · Science
→How is the gas formed in the reaction between sodium carbonate and dilute hydrochloric acid identified?
Class 10 · Science
→A student added water to concentrated acid instead of adding concentrated acid to water. Why is this dangerous?
Class 10 · Science
→How is the acid present in lemon juice different from the acid present in curd?
Class 10 · Science
→If a solution turns red litmus blue and phenolphthalein pink, what is the nature of the solution?
Class 10 · Science
→When zinc metal reacts with dilute sulphuric acid, which test is most suitable to identify the evolved gas?
Class 10 · Science
→A student says that only water is formed when an acid and a base are mixed. Why is this answer incomplete?
Class 10 · Science
→What type of substance would help reduce irritation caused by a nettle leaf sting?
Class 10 · Science
→Why is baking soda applied for relief from the acidic substance in an ant sting?
Class 10 · Science
→Why does acid rain slowly damage marble monuments?
Class 10 · Science
→Why can bubbles form when acid falls on marble?
Class 10 · Science
→How is carbon dioxide produced in a soda-acid fire extinguisher?
Class 10 · Science
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