Heavy water is
Heavy water is
Options
(a) water containing sulphate of Ca and Mg (b) water containning heavy ion (c) water at 4° C (d) D₂O
Correct Answer:
D₂O
Explanation:
Heavy water D₂O. It contains […]
Questions
H₂O₂ is manufactured these days by
H₂O₂ is manufactured these days by
Options
(a) the action of H₂O₂ on BaO₂ (b) the action of H₂SO₄ on Na₂O₂ (c) electrolysis of 50% H₂SO₄ (d) burning hydrogen in excess of oxygen
Correct […]
Ionic hydrides reacts with water to give
Ionic hydrides reacts with water to give
Options
(a) hydride ion (b) acidic solution (c) protons (d) basic solution
Correct Answer:
basic solution
Explanation:
No explanation available. Be the first to write the […]
In H₂O₂ molecules, the angle between two O-H planes is
In H₂O₂ molecules, the angle between two O-H planes is
Options
(a) 103⁰ (b) 94⁰ (c) 105⁰ (d) 101⁰
Correct Answer:
94⁰
Explanation:
No explanation available. Be the first to write the explanation […]
In aqueous solution of H₂O₂ oxidises H₂S
In aqueous solution of H₂O₂ oxidises H₂S
Options
(a) formic acid (b) sulphur (c) acetic acid (d) sulphuric acid
Correct Answer:
sulphur
Explanation:
H₂O₂ → H₂O + [O], H₂S + [O] → S + […]
Oxygen is not evolved on reaction of ozone with
Oxygen is not evolved on reaction of ozone with
Options
(a) H₂O₂ (b) SO₃ (c) Hg (d) KI
Correct Answer:
SO₃
Explanation:
(a) H₂O₂ + O₃ → H₂O + 2O₂,
(b) SO₃ + O₃ […]
The volume occupies by one molecules of water is [density of water =1g/cm³
The volume occupies by one molecules of water is [density of water =1g/cm³
Options
(a) 22400 cm³ (b) 6.02 ˣ 10⁻²³cm³ (c) 3.0 ˣ 10⁻²³cm³ (d) 11200cm³
Correct Answer:
3.0 ˣ 10⁻²³cm³
Explanation: […]
Water is oxidised to oxygen by
Water is oxidised to oxygen by
Options
(a) KMnO₄ (b) O₃ (c) H₂O₂ (d) F₂
Correct Answer:
F₂
Explanation:
When fluorine reacts with water:
2F2(g) + 2H2O(I) → 4H+(aq) + 4F–(aq) […]
The temperature, at which heavy water has maximum density is
The temperature, at which heavy water has maximum density is
Options
(a) 1.16⁰C (b) 4.6⁰C (c) 4⁰C (d) 11.6⁰C
Correct Answer:
11.6⁰C
Explanation:
No explanation available. Be the first to write the explanation […]
When sodium is added to ethanol
When sodium is added to ethanol
Options
(a) no action occurs (b) NaOC₂H₅ and O₂ are formed (c) H₂ is formed (d) NaOC₂H₅ and H₂ are formed
Correct Answer:
NaOC₂H₅ and H₂ are […]