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Q. No.Which option contains an inaccurate trend regarding periodic properties?
| 1. | The Electronegativity of elements increases when moving from left to right in the periodic table. |
| 2. | Ionisation enthalpy decreases in a group from top to bottom. |
| 3. | Non-metallic character increases in moving from left to right in a period. |
| 4. | Metallic character increases in moving from left to right in a period. |
Subtopic: Â Ionization Energy (IE) |Â Electronegativity |Â Nature of Compound |
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Level 1: 80%+
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Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R):
In light of the above statements choose the correct answer from the options given below:
| Assertion (A): | Noble gases exhibit very low chemical reactivity. |
| Reason (R): | Noble gases have completely filled orbitals in the valence shell and are very stable. |
| 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: Â Nature of Compound |
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Level 1: 80%+
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Match the oxide given in column I with its property given in column II
| Column I (Oxide) | Column II (Nature) | ||
| (i) | \(\mathrm{Na}_2 \mathrm{O}\) | (a) | Neutral |
| (ii) | \(\mathrm{Al}_2 \mathrm{O}_3\) | (b) | Basic |
| (iii) | \(\mathrm{N}_2 \mathrm{O}\) | (c) | Acidic |
| (iv) | \(\mathrm{Cl}_2 \mathrm{O}_7\) | (d) | Amphoteric |
Codes:
1. (i)-(b), (ii)-(a), (iii)-(d), (iv)-(c)
2. (i)-(c), (ii)-(b), (iii)-(a), (iv)-(d)
3. (i)-(a), (ii)-(d), (iii)-(b), (iv)-(c)
4. (i)-(b),(ii)-(d), (iii)-(a), (iv)-(c)
Subtopic: Â Nature of Compound |
 94%
Level 1: 80%+
NEET - 2019
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The formula of a compound that is formed by the Aluminium and Sulphur is:
| 1. | AlS2 | 2. | Al2S3 |
| 3. | Al3S2 | 4. | Al3S4 |
Subtopic: Â Nature of Compound |
 89%
Level 1: 80%+
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Subtopic: Â Nature of Compound |
 83%
Level 1: 80%+
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Q. No.
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