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PassageWhen a mixture of sodium carbonate and calcium carbonate is fused with silica at 1500C, a liquid consisting silicates of sodium and calcium is formed. When this liquid is cooled, it becomes viscous and eventually ceases to flow. It becomes solid and called glass. By varying the proportions of the three basic ingredients and by adding other substances, the properties of glass can be altered. An approximate formula for ordinary glass may be given as,R2O.MO.6SiO2Where R = Na or K and M = Ca, Ba, Zn and Pb.SiO2 may be replaced by Al2O3, B2O3, P2O5.Coloured glasses are obtained by adding certain metallic oxides or salts in the fused mass. Class is attacked by HF and this property is used to make marking on the glass. This is known as etching.The glass if cooled rapidly becomes brittle and fragile. The articles of glass are cooled neither very slowly nor very rapidly. The articles are cooled gradually. This process is termed annealing.Q.Annealing is the best described as:a)Slow and gradual coolingb)Sudden and rapid coolingc)Cooling by waterd)Very slow coolingCorrect answer is option 'A'. Can you explain this answer? for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about PassageWhen a mixture of sodium carbonate and calcium carbonate is fused with silica at 1500C, a liquid consisting silicates of sodium and calcium is formed. When this liquid is cooled, it becomes viscous and eventually ceases to flow. It becomes solid and called glass. By varying the proportions of the three basic ingredients and by adding other substances, the properties of glass can be altered. An approximate formula for ordinary glass may be given as,R2O.MO.6SiO2Where R = Na or K and M = Ca, Ba, Zn and Pb.SiO2 may be replaced by Al2O3, B2O3, P2O5.Coloured glasses are obtained by adding certain metallic oxides or salts in the fused mass. Class is attacked by HF and this property is used to make marking on the glass. This is known as etching.The glass if cooled rapidly becomes brittle and fragile. The articles of glass are cooled neither very slowly nor very rapidly. The articles are cooled gradually. This process is termed annealing.Q.Annealing is the best described as:a)Slow and gradual coolingb)Sudden and rapid coolingc)Cooling by waterd)Very slow coolingCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for PassageWhen a mixture of sodium carbonate and calcium carbonate is fused with silica at 1500C, a liquid consisting silicates of sodium and calcium is formed. When this liquid is cooled, it becomes viscous and eventually ceases to flow. It becomes solid and called glass. By varying the proportions of the three basic ingredients and by adding other substances, the properties of glass can be altered. An approximate formula for ordinary glass may be given as,R2O.MO.6SiO2Where R = Na or K and M = Ca, Ba, Zn and Pb.SiO2 may be replaced by Al2O3, B2O3, P2O5.Coloured glasses are obtained by adding certain metallic oxides or salts in the fused mass. Class is attacked by HF and this property is used to make marking on the glass. This is known as etching.The glass if cooled rapidly becomes brittle and fragile. The articles of glass are cooled neither very slowly nor very rapidly. The articles are cooled gradually. This process is termed annealing.Q.Annealing is the best described as:a)Slow and gradual coolingb)Sudden and rapid coolingc)Cooling by waterd)Very slow coolingCorrect answer is option 'A'. Can you explain this answer?.

Solutions for PassageWhen a mixture of sodium carbonate and calcium carbonate is fused with silica at 1500C, a liquid consisting silicates of sodium and calcium is formed. When this liquid is cooled, it becomes viscous and eventually ceases to flow. It becomes solid and called glass. By varying the proportions of the three basic ingredients and by adding other substances, the properties of glass can be altered. An approximate formula for ordinary glass may be given as,R2O.MO.6SiO2Where R = Na or K and M = Ca, Ba, Zn and Pb.SiO2 may be replaced by Al2O3, B2O3, P2O5.Coloured glasses are obtained by adding certain metallic oxides or salts in the fused mass. Class is attacked by HF and this property is used to make marking on the glass. This is known as etching.The glass if cooled rapidly becomes brittle and fragile. The articles of glass are cooled neither very slowly nor very rapidly. The articles are cooled gradually. This process is termed annealing.Q.Annealing is the best described as:a)Slow and gradual coolingb)Sudden and rapid coolingc)Cooling by waterd)Very slow coolingCorrect answer is option 'A'. Can you explain this answer? in English & in Hindi are available as part of our courses for JEE. Download more important topics, notes, lectures and mock test series for JEE Exam by signing up for free.

Here you can find the meaning of PassageWhen a mixture of sodium carbonate and calcium carbonate is fused with silica at 1500C, a liquid consisting silicates of sodium and calcium is formed. When this liquid is cooled, it becomes viscous and eventually ceases to flow. It becomes solid and called glass. By varying the proportions of the three basic ingredients and by adding other substances, the properties of glass can be altered. An approximate formula for ordinary glass may be given as,R2O.MO.6SiO2Where R = Na or K and M = Ca, Ba, Zn and Pb.SiO2 may be replaced by Al2O3, B2O3, P2O5.Coloured glasses are obtained by adding certain metallic oxides or salts in the fused mass. Class is attacked by HF and this property is used to make marking on the glass. This is known as etching.The glass if cooled rapidly becomes brittle and fragile. The articles of glass are cooled neither very slowly nor very rapidly. The articles are cooled gradually. This process is termed annealing.Q.Annealing is the best described as:a)Slow and gradual coolingb)Sudden and rapid coolingc)Cooling by waterd)Very slow coolingCorrect answer is option 'A'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of PassageWhen a mixture of sodium carbonate and calcium carbonate is fused with silica at 1500C, a liquid consisting silicates of sodium and calcium is formed. When this liquid is cooled, it becomes viscous and eventually ceases to flow. It becomes solid and called glass. By varying the proportions of the three basic ingredients and by adding other substances, the properties of glass can be altered. An approximate formula for ordinary glass may be given as,R2O.MO.6SiO2Where R = Na or K and M = Ca, Ba, Zn and Pb.SiO2 may be replaced by Al2O3, B2O3, P2O5.Coloured glasses are obtained by adding certain metallic oxides or salts in the fused mass. Class is attacked by HF and this property is used to make marking on the glass. This is known as etching.The glass if cooled rapidly becomes brittle and fragile. The articles of glass are cooled neither very slowly nor very rapidly. The articles are cooled gradually. This process is termed annealing.Q.Annealing is the best described as:a)Slow and gradual coolingb)Sudden and rapid coolingc)Cooling by waterd)Very slow coolingCorrect answer is option 'A'. Can you explain this answer?, a detailed solution for PassageWhen a mixture of sodium carbonate and calcium carbonate is fused with silica at 1500C, a liquid consisting silicates of sodium and calcium is formed. When this liquid is cooled, it becomes viscous and eventually ceases to flow. It becomes solid and called glass. By varying the proportions of the three basic ingredients and by adding other substances, the properties of glass can be altered. An approximate formula for ordinary glass may be given as,R2O.MO.6SiO2Where R = Na or K and M = Ca, Ba, Zn and Pb.SiO2 may be replaced by Al2O3, B2O3, P2O5.Coloured glasses are obtained by adding certain metallic oxides or salts in the fused mass. Class is attacked by HF and this property is used to make marking on the glass. This is known as etching.The glass if cooled rapidly becomes brittle and fragile. The articles of glass are cooled neither very slowly nor very rapidly. The articles are cooled gradually. This process is termed annealing.Q.Annealing is the best described as:a)Slow and gradual coolingb)Sudden and rapid coolingc)Cooling by waterd)Very slow coolingCorrect answer is option 'A'. Can you explain this answer? has been provided alongside types of PassageWhen a mixture of sodium carbonate and calcium carbonate is fused with silica at 1500C, a liquid consisting silicates of sodium and calcium is formed. When this liquid is cooled, it becomes viscous and eventually ceases to flow. It becomes solid and called glass. By varying the proportions of the three basic ingredients and by adding other substances, the properties of glass can be altered. An approximate formula for ordinary glass may be given as,R2O.MO.6SiO2Where R = Na or K and M = Ca, Ba, Zn and Pb.SiO2 may be replaced by Al2O3, B2O3, P2O5.Coloured glasses are obtained by adding certain metallic oxides or salts in the fused mass. Class is attacked by HF and this property is used to make marking on the glass. This is known as etching.The glass if cooled rapidly becomes brittle and fragile. The articles of glass are cooled neither very slowly nor very rapidly. The articles are cooled gradually. This process is termed annealing.Q.Annealing is the best described as:a)Slow and gradual coolingb)Sudden and rapid coolingc)Cooling by waterd)Very slow coolingCorrect answer is option 'A'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice PassageWhen a mixture of sodium carbonate and calcium carbonate is fused with silica at 1500C, a liquid consisting silicates of sodium and calcium is formed. When this liquid is cooled, it becomes viscous and eventually ceases to flow. It becomes solid and called glass. By varying the proportions of the three basic ingredients and by adding other substances, the properties of glass can be altered. An approximate formula for ordinary glass may be given as,R2O.MO.6SiO2Where R = Na or K and M = Ca, Ba, Zn and Pb.SiO2 may be replaced by Al2O3, B2O3, P2O5.Coloured glasses are obtained by adding certain metallic oxides or salts in the fused mass. Class is attacked by HF and this property is used to make marking on the glass. This is known as etching.The glass if cooled rapidly becomes brittle and fragile. The articles of glass are cooled neither very slowly nor very rapidly. The articles are cooled gradually. This process is termed annealing.Q.Annealing is the best described as:a)Slow and gradual coolingb)Sudden and rapid coolingc)Cooling by waterd)Very slow coolingCorrect answer is option 'A'. Can you explain this answer? tests, examples and also practice JEE tests.