| ⇦ | 
| ⇨ |
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: - A mixture of potassium chlorate, oxalic acid and sulphuric acid is heated.
- When the ore limestone is heated carbon dioxide is given off. This operation
- Which of the following statements about primary amines is false
- If 300 mL of a gas at 27⁰ C is cooled to 7⁰C at constant pressure, its final volume
- Lyophilic colloids are stable due to
Topics: S and Some P Block Elements
(157)
Subject: Chemistry
(2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A mixture of potassium chlorate, oxalic acid and sulphuric acid is heated.
- When the ore limestone is heated carbon dioxide is given off. This operation
- Which of the following statements about primary amines is false
- If 300 mL of a gas at 27⁰ C is cooled to 7⁰C at constant pressure, its final volume
- Lyophilic colloids are stable due to
Topics: S and Some P Block Elements (157)
Subject: Chemistry (2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
18000+ students are using NEETLab to improve their score. What about you?
Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.
Share this page with your friends
Leave a Reply