What is the chemical formula of baking soda? NaHCO₃1/30Baking soda is basic2/30Rock salt is .................... in colour. brown3/30Salt obtained from certain type of rock is called .................... . rock salt4/30The molten state of NaCl is also called as .................... . fused state5/30Select 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 6/30During electrolysis of NaCl in the fused state .................... is formed at cathode. sodium7/30NaHCO3 is also called as .................... . sodium bicarbonate8/30Substance used to make hard water soft is .................... . Na2 CO3 .10H2 O9/30Chlorine gas is a strong .................... agent. oxidizing10/30The fixed number of molecules of water in alum is .................... . 2411/30Molecular formula for magnesium bromide is .................... . MgBr212/30Which of the following is a non-metallic element essential for human bone formation? Phosphorus13/30.................... is known as chloride of lime. Bleaching powder14/30Bleaching powder is .................... in colour. yellowish white15/30Select the odd one out: Soap, Toothpaste, Baking soda, Curd. CurdQuestion Explanation:Curd : It is acidic in nature while others are basic in nature. 16/30Soap is .................... in nature. basic17/30Which gas is released during the process of photosynthesis? Oxygen18/30Which substance is commonly used as a disinfectant in swimming pools? Bleaching powder19/30Select 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. 20/30Select the odd one out: Na2SO4, K3PO4, MgBr2, HCl. HCLQuestion Explanation:HCl : Rest all are salts but HCl is an acid. 21/30Strong odour in swimming pool is due to .................... . chlorine gas22/30What is the chemical name of common salt? Sodium chloride23/30Select 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. 24/30Melting point of NaCl is .................... . 800°C25/30The .................... % aqueous solution of salt is called brine. 2526/30Bleaching powder is also called .................... . calcium oxychloride27/30Select 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. 28/30The molecular formula for baking soda is .................... . NaHCO329/30What is the primary component of natural gas? Methane30/30PrevNext Class 9 | Substances in Common Use 1 / 30 Which substance is commonly used as a disinfectant in swimming pools? Hydrogen peroxide Bleaching powder Vinegar Baking soda 2 / 30 Bleaching powder is ……………….. in colour. yellowish white pinkish brown greenish blue brownish red 3 / 30 Salt obtained from certain type of rock is called ……………….. . pure salt stone salt rock salt hard salt 4 / 30 NaHCO3 is also called as ……………….. . sodium carbon oxide sodium chloride sodium carbonate sodium bicarbonate 5 / 30 The fixed number of molecules of water in alum is ……………….. . 2 7 24 10 6 / 30 During electrolysis of NaCl in the fused state ……………….. is formed at cathode. oxalic acid butyric acid sodium oxygen 7 / 30 What is the primary component of natural gas? Methane Ethane Butane Propane 8 / 30 The molecular formula for baking soda is ……………….. . NaHCO3 Na2 SO4 NaNO3 Na2 CO3 9 / 30 The ……………….. % aqueous solution of salt is called brine. 25 50 60 30 10 / 30 Select the odd one out: Soap, Toothpaste, Baking soda, Curd. Toothpaste Soap Baking soda Curd Curd : It is acidic in nature while others are basic in nature. 11 / 30 Select the odd one out: Na2CO3.10H2O, Na2SO4.10H2O, BaCl2.2H2O, CaOCl2 Na2 CO3 .10H2 O CaOCl2 Na2 SO4 .10H2 O Na2 SO4 .10H2 O CaOCl2 : It is amorphous in nature while rest are crystalline in nature. 12 / 30 Select the odd one out: Sodium sulphate, Barium chloride, Magnesium sulphate, Bleaching powder. Bleaching powder Magnesium sulphate Barium chloride Sodium sulphate All others are crystalline salt with water of crystallization while bleaching powder is not. 13 / 30 The molten state of NaCl is also called as ……………….. . solid state semi-solid fused state gaseous state 14 / 30 Select the odd one out: Na2SO4, K3PO4, MgBr2, HCl. MgBr2 Na2 SO4 HCL K3 PO4 HCl : Rest all are salts but HCl is an acid. 15 / 30 ……………….. is known as chloride of lime. Sodium bicarbonate Calcium carbonate Sodium chloride Bleaching powder 16 / 30 Soap is ……………….. in nature. fuming neutral acidic basic 17 / 30 Which of the following is a non-metallic element essential for human bone formation? Calcium Iron Sodium Phosphorus 18 / 30 Chlorine gas is a strong ……………….. agent. neutral oxidizing acidic reducing 19 / 30 Select the odd one out: Strontium – 89, Strontium – 90, Radium – 223, Iodine – 123. Iodine – 123 Strontium – 89 Strontium – 90 Radium – 223 Iodine – 123 : It is used to cure hyperthyroidism while others are used to cure bone cancer 20 / 30 Select the odd one out: Boron-10, Iodine – 131, Cobalt – 60, Iodine – 123. Iodine – 131 Boron-10 Iodine – 123 Cobalt – 60 Iodine – 123 : It is used in hyperthyroidism while rest are used in treatment of brain tumour. 21 / 30 Baking soda is basic non-metallic acidic metallic 22 / 30 Melting point of NaCl is ……………….. . 100°C 600°C 800°C 400°C 23 / 30 What is the chemical formula of baking soda? H₂SO₄ NaCl NaHCO₃ CH₄ 24 / 30 Which gas is released during the process of photosynthesis? Hydrogen Oxygen Carbon dioxide Nitrogen 25 / 30 Rock salt is ……………….. in colour. blue black brown white 26 / 30 Substance used to make hard water soft is ……………….. . Na2 CO3 .H2 O NaCO3 .10H2 O NaCO3 .H2 O Na2 CO3 .10H2 O 27 / 30 What is the chemical name of common salt? Calcium carbonate Potassium nitrate Sodium chloride Magnesium sulfate 28 / 30 Strong odour in swimming pool is due to ……………….. . impurities calcium hydroxide chlorine gas calcium carbonate 29 / 30 Bleaching powder is also called ……………….. . calcium oxalate calcium oxychloride calcium oxygen chlorine calcium hydroxide 30 / 30 Molecular formula for magnesium bromide is ……………….. . MgBr MgBr2 Mg2 Br2 Mg2 Br 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