The molecular formula for baking soda is .................... . NaHCO31/30Melting point of NaCl is .................... . 800°C2/30Select the odd one out: Soap, Toothpaste, Baking soda, Curd. CurdQuestion Explanation:Curd : It is acidic in nature while others are basic in nature. 3/30What is the chemical formula of baking soda? NaHCO₃4/30Substance used to make hard water soft is .................... . Na2 CO3 .10H2 O5/30The fixed number of molecules of water in alum is .................... . 246/30Bleaching powder is .................... in colour. yellowish white7/30Which substance is commonly used as a disinfectant in swimming pools? Bleaching powder8/30The molten state of NaCl is also called as .................... . fused state9/30Select the odd one out: Na2SO4, K3PO4, MgBr2, HCl. HCLQuestion Explanation:HCl : Rest all are salts but HCl is an acid. 10/30Strong odour in swimming pool is due to .................... . chlorine gas11/30Rock salt is .................... in colour. brown12/30Salt obtained from certain type of rock is called .................... . rock salt13/30Soap is .................... in nature. basic14/30What is the primary component of natural gas? Methane15/30Which gas is released during the process of photosynthesis? Oxygen16/30.................... is known as chloride of lime. Bleaching powder17/30Chlorine gas is a strong .................... agent. oxidizing18/30Bleaching powder is also called .................... . calcium oxychloride19/30Select the odd one out: Na2CO3.10H2O, Na2SO4.10H2O, BaCl2.2H2O, CaOCl2 CaOCl2Question Explanation:CaOCl2 : It is amorphous in nature while rest are crystalline in nature. 20/30What is the chemical name of common salt? Sodium chloride21/30Baking soda is basic22/30Select the odd one out: Sodium sulphate, Barium chloride, Magnesium sulphate, Bleaching powder. Bleaching powderQuestion Explanation:All others are crystalline salt with water of crystallization while bleaching powder is not. 23/30During electrolysis of NaCl in the fused state .................... is formed at cathode. sodium24/30Molecular formula for magnesium bromide is .................... . MgBr225/30Select the odd one out: Strontium – 89, Strontium – 90, Radium – 223, Iodine – 123. Iodine – 123Question Explanation:Iodine – 123 : It is used to cure hyperthyroidism while others are used to cure bone cancer 26/30The .................... % aqueous solution of salt is called brine. 2527/30NaHCO3 is also called as .................... . sodium bicarbonate28/30Select the odd one out: Boron-10, Iodine – 131, Cobalt – 60, Iodine – 123. Iodine – 123Question Explanation:Iodine – 123 : It is used in hyperthyroidism while rest are used in treatment of brain tumour. 29/30Which of the following is a non-metallic element essential for human bone formation? Phosphorus30/30PrevNext Class 9 | Substances in Common Use 1 / 30 ……………….. is known as chloride of lime. Bleaching powder Sodium bicarbonate Calcium carbonate Sodium chloride 2 / 30 Substance used to make hard water soft is ……………….. . Na2 CO3 .10H2 O Na2 CO3 .H2 O NaCO3 .H2 O NaCO3 .10H2 O 3 / 30 The molten state of NaCl is also called as ……………….. . gaseous state fused state solid state semi-solid 4 / 30 What is the primary component of natural gas? Butane Ethane Methane Propane 5 / 30 The ……………….. % aqueous solution of salt is called brine. 25 50 60 30 6 / 30 Baking soda is metallic non-metallic acidic basic 7 / 30 Melting point of NaCl is ……………….. . 400°C 600°C 100°C 800°C 8 / 30 Select the odd one out: Soap, Toothpaste, Baking soda, Curd. Soap Baking soda Toothpaste Curd Curd : It is acidic in nature while others are basic in nature. 9 / 30 Which gas is released during the process of photosynthesis? Carbon dioxide Hydrogen Oxygen Nitrogen 10 / 30 Soap is ……………….. in nature. basic fuming acidic neutral 11 / 30 Chlorine gas is a strong ……………….. agent. reducing acidic oxidizing neutral 12 / 30 What is the chemical name of common salt? Sodium chloride Magnesium sulfate Potassium nitrate Calcium carbonate 13 / 30 Bleaching powder is also called ……………….. . calcium oxygen chlorine calcium oxalate calcium hydroxide calcium oxychloride 14 / 30 The fixed number of molecules of water in alum is ……………….. . 7 24 10 2 15 / 30 Which substance is commonly used as a disinfectant in swimming pools? Vinegar Bleaching powder Baking soda Hydrogen peroxide 16 / 30 Which of the following is a non-metallic element essential for human bone formation? Iron Sodium Phosphorus Calcium 17 / 30 Select the odd one out: Na2SO4, K3PO4, MgBr2, HCl. Na2 SO4 MgBr2 K3 PO4 HCL HCl : Rest all are salts but HCl is an acid. 18 / 30 The molecular formula for baking soda is ……………….. . NaNO3 Na2 CO3 Na2 SO4 NaHCO3 19 / 30 Strong odour in swimming pool is due to ……………….. . calcium hydroxide impurities chlorine gas calcium carbonate 20 / 30 Bleaching powder is ……………….. in colour. greenish blue pinkish brown brownish red yellowish white 21 / 30 What is the chemical formula of baking soda? NaHCO₃ CH₄ NaCl H₂SO₄ 22 / 30 Select the odd one out: Sodium sulphate, Barium chloride, Magnesium sulphate, Bleaching powder. Barium chloride Bleaching powder Magnesium sulphate Sodium sulphate All others are crystalline salt with water of crystallization while bleaching powder is not. 23 / 30 Select the odd one out: Na2CO3.10H2O, Na2SO4.10H2O, BaCl2.2H2O, CaOCl2 Na2 CO3 .10H2 O Na2 SO4 .10H2 O CaOCl2 Na2 SO4 .10H2 O CaOCl2 : It is amorphous in nature while rest are crystalline in nature. 24 / 30 Select the odd one out: Boron-10, Iodine – 131, Cobalt – 60, Iodine – 123. Iodine – 123 Iodine – 131 Boron-10 Cobalt – 60 Iodine – 123 : It is used in hyperthyroidism while rest are used in treatment of brain tumour. 25 / 30 Molecular formula for magnesium bromide is ……………….. . MgBr Mg2 Br Mg2 Br2 MgBr2 26 / 30 Rock salt is ……………….. in colour. blue black brown white 27 / 30 Salt obtained from certain type of rock is called ……………….. . stone salt hard salt pure salt rock salt 28 / 30 NaHCO3 is also called as ……………….. . sodium carbonate sodium carbon oxide sodium chloride sodium bicarbonate 29 / 30 Select the odd one out: Strontium – 89, Strontium – 90, Radium – 223, Iodine – 123. Iodine – 123 Strontium – 90 Strontium – 89 Radium – 223 Iodine – 123 : It is used to cure hyperthyroidism while others are used to cure bone cancer 30 / 30 During electrolysis of NaCl in the fused state ……………….. is formed at cathode. sodium oxalic acid butyric acid oxygen Your score is The average score is 69% 0% Restart quiz
Class 9 | Reflection Of Light Class 9 | Maharashtra Board | Quiz + Flash Cards, Quiz + Flashcards / By Shubham Jha
Class 9 | Study of Sound 1 Comment / Class 9 | Maharashtra Board | Quiz + Flash Cards, Quiz + Flashcards / By Shubham Jha