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Glass is soluble in
Options
(a) HClO₄
(b) Hf
(c) aqua regia
(d) H₂SO₄
Correct Answer:
Hf
Explanation:
Unlike other halogen acids, HF acid attacks silica and glass. Glass being a mixture of sodium and calcium silicates reacts with HF forming soluble sodium and calcium fluorosilicates respectively. e.g., Na₂SiO₃ + 6HF → Na₂SiF₆ + 3H₂O, CaSiO₃ + 6HF → CaSiF₆ + 3H₂O.
Related Questions: - The acidic, basic or amphoteric nature of Mn₂O₇, V₂O₅ and CrO are respectively
- Treatment of a mixture of CH₃Cl and C₂H₅Cl with sodium in dry ether can generat
- Volume occupied by one molecule of water (density= 1 g cm⁻³) is
- In which of the following reaction, the hydrogen peroxide is a reducing agent?
- At when pressure will a quantity of gas, which occupies 100 mL at a pressure of 720 mm
Topics: S and Some P Block Elements
(157)
Subject: Chemistry
(2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The acidic, basic or amphoteric nature of Mn₂O₇, V₂O₅ and CrO are respectively
- Treatment of a mixture of CH₃Cl and C₂H₅Cl with sodium in dry ether can generat
- Volume occupied by one molecule of water (density= 1 g cm⁻³) is
- In which of the following reaction, the hydrogen peroxide is a reducing agent?
- At when pressure will a quantity of gas, which occupies 100 mL at a pressure of 720 mm
Topics: S and Some P Block Elements (157)
Subject: Chemistry (2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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