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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: - Calculate the energy in joule corresponding to light of wavelength 45nm
- Benzenamine reacts with excess bromine to produce
- Transition metals show paramagnetism
- 75% of a first order reaction was completed in 32min.When was 50% of the reaction
- If 10 cm³ solution of H₂O₂ ,on decomposition gives 150 cm³ of O₂
Topics: S and Some P Block Elements
(157)
Subject: Chemistry
(2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Calculate the energy in joule corresponding to light of wavelength 45nm
- Benzenamine reacts with excess bromine to produce
- Transition metals show paramagnetism
- 75% of a first order reaction was completed in 32min.When was 50% of the reaction
- If 10 cm³ solution of H₂O₂ ,on decomposition gives 150 cm³ of O₂
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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