Bleaching powder is .................... in colour. yellowish white1/30What is the chemical name of common salt? Sodium chloride2/30What is the primary component of natural gas? Methane3/30Select the odd one out: Na2SO4, K3PO4, MgBr2, HCl. HCLQuestion Explanation:HCl : Rest all are salts but HCl is an acid. 4/30Which gas is released during the process of photosynthesis? Oxygen5/30Chlorine gas is a strong .................... agent. oxidizing6/30NaHCO3 is also called as .................... . sodium bicarbonate7/30Strong odour in swimming pool is due to .................... . chlorine gas8/30Select the odd one out: Soap, Toothpaste, Baking soda, Curd. CurdQuestion Explanation:Curd : It is acidic in nature while others are basic in nature. 9/30Select 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. 10/30.................... is known as chloride of lime. Bleaching powder11/30Bleaching powder is also called .................... . calcium oxychloride12/30Melting point of NaCl is .................... . 800°C13/30Salt obtained from certain type of rock is called .................... . rock salt14/30Select 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 15/30During electrolysis of NaCl in the fused state .................... is formed at cathode. sodium16/30Molecular formula for magnesium bromide is .................... . MgBr217/30Which substance is commonly used as a disinfectant in swimming pools? Bleaching powder18/30The molten state of NaCl is also called as .................... . fused state19/30The fixed number of molecules of water in alum is .................... . 2420/30The molecular formula for baking soda is .................... . NaHCO321/30Soap is .................... in nature. basic22/30Rock salt is .................... in colour. brown23/30The .................... % aqueous solution of salt is called brine. 2524/30What is the chemical formula of baking soda? NaHCO₃25/30Substance used to make hard water soft is .................... . Na2 CO3 .10H2 O26/30Select 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. 27/30Baking soda is basic28/30Which of the following is a non-metallic element essential for human bone formation? Phosphorus29/30Select 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. 30/30PrevNext Class 9 | Substances in Common Use 1 / 30 Select the odd one out: Strontium – 89, Strontium – 90, Radium – 223, Iodine – 123. Iodine – 123 Radium – 223 Strontium – 89 Strontium – 90 Iodine – 123 : It is used to cure hyperthyroidism while others are used to cure bone cancer 2 / 30 NaHCO3 is also called as ……………….. . sodium carbon oxide sodium bicarbonate sodium chloride sodium carbonate 3 / 30 Baking soda is basic acidic non-metallic metallic 4 / 30 Which substance is commonly used as a disinfectant in swimming pools? Baking soda Bleaching powder Vinegar Hydrogen peroxide 5 / 30 Select the odd one out: Boron-10, Iodine – 131, Cobalt – 60, Iodine – 123. Cobalt – 60 Boron-10 Iodine – 131 Iodine – 123 Iodine – 123 : It is used in hyperthyroidism while rest are used in treatment of brain tumour. 6 / 30 During electrolysis of NaCl in the fused state ……………….. is formed at cathode. oxygen oxalic acid butyric acid sodium 7 / 30 Soap is ……………….. in nature. basic fuming neutral acidic 8 / 30 ……………….. is known as chloride of lime. Sodium bicarbonate Bleaching powder Sodium chloride Calcium carbonate 9 / 30 The ……………….. % aqueous solution of salt is called brine. 30 25 50 60 10 / 30 What is the chemical name of common salt? Sodium chloride Potassium nitrate Magnesium sulfate Calcium carbonate 11 / 30 Select the odd one out: Sodium sulphate, Barium chloride, Magnesium sulphate, Bleaching powder. Bleaching powder Barium chloride Magnesium sulphate Sodium sulphate All others are crystalline salt with water of crystallization while bleaching powder is not. 12 / 30 Bleaching powder is ……………….. in colour. pinkish brown yellowish white brownish red greenish blue 13 / 30 Melting point of NaCl is ……………….. . 800°C 600°C 400°C 100°C 14 / 30 Which gas is released during the process of photosynthesis? Oxygen Nitrogen Hydrogen Carbon dioxide 15 / 30 What is the primary component of natural gas? Ethane Methane Propane Butane 16 / 30 Select the odd one out: Na2CO3.10H2O, Na2SO4.10H2O, BaCl2.2H2O, CaOCl2 Na2 SO4 .10H2 O CaOCl2 Na2 SO4 .10H2 O Na2 CO3 .10H2 O CaOCl2 : It is amorphous in nature while rest are crystalline in nature. 17 / 30 Select the odd one out: Soap, Toothpaste, Baking soda, Curd. Baking soda Curd Toothpaste Soap Curd : It is acidic in nature while others are basic in nature. 18 / 30 The molten state of NaCl is also called as ……………….. . semi-solid gaseous state solid state fused state 19 / 30 Salt obtained from certain type of rock is called ……………….. . rock salt hard salt stone salt pure salt 20 / 30 The molecular formula for baking soda is ……………….. . Na2 SO4 Na2 CO3 NaHCO3 NaNO3 21 / 30 Bleaching powder is also called ……………….. . calcium oxygen chlorine calcium oxychloride calcium oxalate calcium hydroxide 22 / 30 Rock salt is ……………….. in colour. blue brown black white 23 / 30 Strong odour in swimming pool is due to ……………….. . chlorine gas calcium hydroxide calcium carbonate impurities 24 / 30 Substance used to make hard water soft is ……………….. . Na2 CO3 .10H2 O NaCO3 .10H2 O NaCO3 .H2 O Na2 CO3 .H2 O 25 / 30 Select the odd one out: Na2SO4, K3PO4, MgBr2, HCl. MgBr2 HCL K3 PO4 Na2 SO4 HCl : Rest all are salts but HCl is an acid. 26 / 30 What is the chemical formula of baking soda? NaCl NaHCO₃ CH₄ H₂SO₄ 27 / 30 Which of the following is a non-metallic element essential for human bone formation? Calcium Iron Phosphorus Sodium 28 / 30 The fixed number of molecules of water in alum is ……………….. . 24 7 2 10 29 / 30 Molecular formula for magnesium bromide is ……………….. . MgBr Mg2 Br2 Mg2 Br MgBr2 30 / 30 Chlorine gas is a strong ……………….. agent. neutral oxidizing acidic reducing Your score is The average score is 73% 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