Sodium carbonate, when fused with sand, forms sodium silicate, which is commonly known as
Correct answer: B. Water glass
- A. Soda glass
- B. Water glass
- C. Jinna glass
- D. Pyrex glass
Explanation
Sodium silicate is commonly known as water glass, or soluble glass. It gets its name because it is essentially glass (silicon dioxide) in water. As the water evaporates, the solution solidifies into a glassy solid. It's formula is Na2SiO3. Soda glass is a mixture of Na2SiO3 and CaSiO3. There is no such thing as Jinna glass. Pyrex glass was originally made of borosilicate glass, which is very resistant to thermal shock. Currently, Pyrex is made of soda-lime glass. It can withstand abrupt changes in temperature and does not break on heating.
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About Reactions of Group IV Elements
Group IV, or Group 14, chemistry covers the trends from carbon and silicon to tin and lead, including their reactions with oxygen, halogens, water, acids and alkalis. It also examines the structures and properties of their oxides and chlorides, oxidation states, and the inert pair effect, rather than treating all members as equally metallic.
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