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TERMS AT AGLANCE, , hctance which, , A c i d :S u b s t, , hctance, , Base:Substa, , is sour in taste, and turns, which is bitter in taste and, , blue litmus red, , turns red, , litmus blue, acids: Acids which come from plants and animals, and, , O r g a n i ca c i, , ndis and include carbon as, include carbon as one of the, alacid, acid: Acid prepared from mineral elements and, Mineral, devoid of carbon, NeutralS u, Substances: Substances which are neither, , acidic, , leuti, , alization reaction: Heaction in which an acid and a, , s a l ta n d w a t e r, , Irated salt:, , Crystal ofa salt that has water of, , Anyhydrous salt: Dry water free salt powder, , basic in nature, base react to neutralize, , elements., , nor, , one, , a, , crystallization, , Exercises, Objective Type Questions, A., , Multiple choice questions., 1, Which one of the following is a weak acid?, , a. Hydrochloric acid, , b. Nitric acid, 2. Neutralization reaction takes place between, a. An acid and water, , b. A base and water, , c. Sulphuric acid, , C. A salt and water, , Acetic acid, A n acid and a base, , 3. Platinum and gold metals can be dissolved in, a. Nitric acid, , Aqua regia, , C. Sulphuric acid, , d. Hydrochloric acid, , C. Acetic acid, , d. Formic acid, , 4. Which acid causes oil and butter rancidP, 2. Lactic acid, , b. Butyric acid, , 5. Acid present in sour curd is, , actic acid, , b. Citric acid, , C. Formic acid, 6. To get relief from wasp sting, rub the spot with a dilute solution of, a. Sour curd, , b. Lemon juice, , a. Toothpaste, , b. Lime water, , d. Amino acid, , c. Vinegar, d Both b. and c., 7. When an ant stings, it causes itching on the skin. To get relief, it should be rubbed with:, , C. alamine/lotion, , d. Any of these, , 8. An acid which is a part of gastric juice in our stomach is, , a. Acetic acid, , b. Citric acid, C Hydrochloric acid, 9. Which of the following should not be used as an antacid?, a. Sodium carbonate, , c. Sodium hydrogen carbonate, , 10., , A liquid, , poured out, , a. Sulphuric acid, , Acids, Bases, , and Salts, , from, , a, , d. Tartaric acid, , bSodiumhydroxide, d. Magnesium hydroxide, , plastic bottle into a glass bottle, leaks out. Name the liquid., , b. Nitric acid, , C. Aqua regia, , dHydrofuoric acid, , 85

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B., , 'false'., , State whether'true'or, ., , o s t nganw, 3, , 8., , acidc o r basic nature, Indicator shows the, colour,, with the change m, of a sulstance, , st, , onganw, , art, , are a, , 4agarnic acnds come, , Limestone is mainly calcum Carbon, , Phenolphthalein changes to pink in aria, , of, , tnom both, , our, , food., , 11., , China, , T, , plants, , the, , are, , sourn, , .atmeI8 sparungiy, , taste and, , soluble, , slippery, , in water., , to, , touch., , indicator, , rose, , turns, , green, , cids, , in, , acidie, , solution, 12. Sulphuric acid is used in car batteries, , and animals, Bases, , rbonate., , 10., , acuds,, , auds are strong, aids, , in naturc,, , Vinegar is basic, , F, , T, , 13., , blue litmus red., , turns, , T, , 14 Acid rin is causec by sulphurdioxide, , T, , air., present in the, , Akai is a base which is sparingly soluble in, 15., , W.ater., , Nitric acid, , Citric acid is present in turmeric., , C. Give one word answer., 1., , The nature of a substance in solution, which turns blue litmus red. t\CIdA, , 2, , A, , 3., , A sohution which turns China, , strong base readily solublein water., , 5. A natural indicator.China ko, 6., , rose indicator, t0ud, 4. The nature of a substance in, solution, which turns red litmus bluc., C, , D., , which, , turns China rose, , pink. CcluC, , liRa, , green., , A solution, , 7., , Reaction between, , 8., , Achemical indicator, , 9., , An indicator, , 6., , Reacts with, Reacts with, , we, , acid and, , an, , indicatr.tr, , a base,, , et, , ren, , obtain from lichens., , Name the acid:, 1., , Present in the, , 2., , Present in citrus fruits, Present in tamarind, , 3., , sting of, , 4., , Made from minerals, , 5., , Cuts into, , or ccholic, , LU, -, , 7., , 8. Reacts with, 9. Reacts with, , glass, , to, , a, , base, base, , to, , a, a, , 3., , Explain neutralization reaction with, help of a suitable example., , happens when limestone is heated?, the, , 4 What happens when calcium, oxide is, in water?, placed, What is, , antacid?, do, Why coloured crystals of, copper, suiphate turn into, , heating, , give chloride (salt, , give sulphate (salt), to, give nitrate (salt), base to give, carbonate (salt., , questions., , What, happens when carbon dioxide is, blown into limewater?, , What, , 6., , base, , Theoretical Questions, , 2., , 5., , a, , Ntaic, , ALhusuCuneo, A.Short answer type, 1., , an ant., , an, , white, , powder on, , 7., , What, , is the, , an alkali?, , 8., , What, , 9,, , Explain why, , 10., , difference between a, base and, , is water of, , do, , crystallization?, , farmers add, acidic (kalar) soil?, slaked lime, , How do we obtain, an, 11. Give, reasons tor the, a., , b., C., , to, , anhydrou, rous salt?, tollowing:, , Unrpe mangO Is souf n, taste, milky when, through it, Lime water turns, , Hydrofluoric acid is stored, , Acids Bmetloin, , athe