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Q. No.Assertion(A): Dihydrogen is an environment/eco-friendly fuel.
Reason(R): Hydrogen is the lightest element.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true but (R) is not the correct explanation of (A).
3. (A) is true but (R) is false.
4. Both (A) and (R) are false.
Reason(R): Hydrogen is the lightest element.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true but (R) is not the correct explanation of (A).
3. (A) is true but (R) is false.
4. Both (A) and (R) are false.
Subtopic: Preparation & Properties |
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The products obtained in the following reaction are:
\(H_2SO_4+BaO_2.8H_{2}O\rightarrow\text{Product} \)
1. \(H_2+O_2 \)
2. \(H_2O \)
3. \(BaSO_4+H_2O_2 \)
4. \(H_2SO_8+H_2O_2 \)
\(H_2SO_4+BaO_2.8H_{2}O\rightarrow\text{Product} \)
1. \(H_2+O_2 \)
2. \(H_2O \)
3. \(BaSO_4+H_2O_2 \)
4. \(H_2SO_8+H_2O_2 \)
Subtopic: H2O2 (Hydrogen Peroxide) |
91%
Level 1: 80%+
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\(2HSO^-_4~\xrightarrow[hydrolysis]{electrolysis}2H^++A+2SO^{2-}_4 \)
What is the dihedral angle in "A" in the solid phase?
1. 90.2°
2. 111°
3. 111.5°
4. 104°
Subtopic: H2O2 (Hydrogen Peroxide) |
60%
Level 2: 60%+
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Subtopic: Preparation & Properties |
Level 4: Below 35%
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(A)
(B)
Choose the correct option:
| 1. | H2O2 acts as a reducing and oxidising agent respectively in equations (A) and (B) |
| 2. | H2O2 acts as an oxidising agent in equations (A) and (B) |
| 3. | H2O2 acts as a reducing agent in equations (A)and (B) |
| 4. | H2O2 acts as oxidizing and reducing agent respectively in equations (A) and (B) |
Subtopic: H2O2 (Hydrogen Peroxide) |
61%
Level 2: 60%+
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Subtopic: H2O2 (Hydrogen Peroxide) |
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Statements about heavy water are given below.
| A. | Heavy water is used in exchange reactions for the study of reaction mechanisms. |
| B. | Heavy water is prepared by exhaustive electrolysis of water. |
| C. | Heavy water has a higher boiling point than ordinary water. |
| D. | Viscosity of H2O is greater than D2O. |
The correct statements are-
1. A, B, and C only
2. A and B only
3. A and D only
4. A and C only
Subtopic: Water |
71%
Level 2: 60%+
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The volume strength of 8.9 M H2O2 solution calculated at 273 K and 1 atm is-
(R = 0.0821 L atm K–1 mol–1) rounded off to the nearest integer)
1. 100
2. 80
3. 120
4. 60
Subtopic: H2O2 (Hydrogen Peroxide) |
75%
Level 2: 60%+
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The one that is not suitable for the removal of permanent hardness of water is:
1. Treatment with sodium carbonate
2. Calgon's method
3. Clark's method
4. Ion-exchange method
Subtopic: Hard & Soft Water |
79%
Level 2: 60%+
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Dihydrogen of high purity (> 99.95%) is obtained through
| 1. | The electrolysis of warm Ba(OH)2 solution using Ni electrodes. |
| 2. | The reaction of Zn with dilute HCl. |
| 3. | The electrolysis of brine solution. |
| 4. | The electrolysis of acidified water using Pt electrodes. |
Subtopic: Preparation & Properties |
79%
Level 2: 60%+
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