Recent Questions
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Match The Chemical Substances Given In Column (I) With Their Appropriate Application Given In Column (II).
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Which Of The Following Statement Is Not Correct?
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A Metal Carbonate X On Heating With An Acid Gives A Gas Which When Passed Through A Solution Y Gives The Carbonate Back
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(i) What Is Meant By PH (ii) Two Solutions A And B Have PH Values Of 3.0 And 9.5 Respectively. (iii) Water Is A Neutral Susbtance
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(i) Write Three Physical Properties Each Of Acids And Bases. (ii) How Will You Show With An Example
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Give One Example In Each Case:
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How Is Plaster Of Paris Chemically Different From Gypsum? How Can They Be Interconverted?
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A Student Prepared Solutions Of (i) An Acid And (ii) A Base In Two Separate Beakers.
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In One Of The Industrial Processes Used For The Manufacture Of Sodium Hydroxide, A Gas X Is Formed As By - Product
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A Dry Pellet Of A Common Bases B When Kept In Open Absorbs Moisture And Turns Sticky.
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Write The Name And Formula Of Each Of The Following
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A Substance X Is Used As A Building Material And Insoluble In Water.
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Answer The Following: (i) Why Is Sodium Hydrogen Carbonate An Essential (ii) When Electricity Is Passed Through An Aqueous Solution Of
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Baking Soda Is Used In Small Amounts For Making Bread And Cake
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What PH Do You Expect For The Following Salt Solutions And Why?
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What Is Tooth Enamel Chemically? Or Tooth Enamel Is One Of The Hardest Substances In Our Body.
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The PH Of A Salt Used To Make Tasty And Crispy Pakoras Is 14.
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2 ML Of Sodium Hydroxide Solution Is Added To A Few Pieces Of Granulated Zinc Metal Taken In A Test Tube.
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What Is Observed When Sulphur Dioxide Is Passed Through
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Account For The Following: (i) Antacid Tablets Are Used By (ii) Toothpaste Is Used For (iii) Which Acid Is Stinging Hair
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Modified 5 Year Ago
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(i) Name One Natural Source Of Each Of The Following Acids. (ii) Which Ion Is Commonly Produced By All Acids?
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Assertion : If The PH Inside The Mouth Decreases Below Reason : The Bacteria Present In Mouth Degrades The Sugar
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Assertion : Phenolphthalalein Gives Pink Colour In Basic Solution Reason : Phenolphthalalein Is A Natural Indicator
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Assertion : While Dissolving An Acid Or Base In Water Reason : Dissolving An Acid On A Base In Water
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