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Q. No.Subtopic: Ionization Energy (IE) |
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| Assertion (A) | The helium atom has the highest ionization energy among all the elements. |
| Reason (R): | Helium is the smallest atom among all the elements. |
| 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: Ionization Energy (IE) |
51%
From NCERT
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Given below are two statements:
| Statement I: | Dissociation is the process of separation of ions in the water already existing as such in the solid state of the solute like NaCl. |
| Statement II: | Ionization corresponds to a process in which neutral molecules split into charged ions in the solution. |
| 1. | Both Statement I and Statement II are correct. |
| 2. | Both Statement I and Statement II are incorrect. |
| 3. | Statement I is correct and Statement II is incorrect. |
| 4. | Statement I is incorrect and Statement II is correct. |
Subtopic: Nature of Compound |
From NCERT
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In Mendeleev's periodic table, a number of series and groups are X and Y respectively. X and Y are:
1. X=12, Y=9
2. X=8, Y=9
3. X=8, Y=8
4. X=12, Y=8
1. X=12, Y=9
2. X=8, Y=9
3. X=8, Y=8
4. X=12, Y=8
Subtopic: Evolution of Periodic Table |
From NCERT
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The pair of elements which is not placed in the same group in Mendeleev's periodic table is:
1. Sc, Ga
2. Mn, Br
3. Nb, Sb
4. Rb, Cd
1. Sc, Ga
2. Mn, Br
3. Nb, Sb
4. Rb, Cd
Subtopic: Evolution of Periodic Table |
From NCERT
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Element which has the lowest ionisation potential among the following is:
| 1. | C | 2. | Si |
| 3. | Sn | 4. | Pb |
Subtopic: Ionization Energy (IE) |
From NCERT
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Given below are pair of species. Which pair has the largest difference in sizes?
| 1. | Na and K | 2. | K and K+ |
| 3. | Cl and Cl- | 4. | Cl and Br |
Subtopic: Atomic Size |
From NCERT
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When sodium is converted into sodium ion (Na+) then the effective nuclear charge of sodium (Na) is:
1. Increases 3 times approximately
2. Increases 2 times approximately
3. Decreases 2 times approximately
4. Decreases 3 times approximately
Subtopic: Screening Effect |
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Mark the correct arrangement of the elements B, C, At, and S in order of increasing electronegativity:
1. B > C > S > At
2. S > C > B > At
3. C > B > S > At
4. S > C > At > B
1. B > C > S > At
2. S > C > B > At
3. C > B > S > At
4. S > C > At > B
Subtopic: Electronegativity |
From NCERT
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Which of the following pair is correctly matched?
1. Basic oxides - \(\mathrm{In_2O_3 , K_2O , SnO_2}\)
2. Neutral oxides - \(\mathrm{CO, NO_2, N_2O}\)
3. Acidic oxides - \(\mathrm{Mn_2O_7, SO_2, TeO_3}\)
4. Amphoteric oxides -\(\mathrm{BeO , Ga_2O_3 , GeO }\)
1. Basic oxides - \(\mathrm{In_2O_3 , K_2O , SnO_2}\)
2. Neutral oxides - \(\mathrm{CO, NO_2, N_2O}\)
3. Acidic oxides - \(\mathrm{Mn_2O_7, SO_2, TeO_3}\)
4. Amphoteric oxides -\(\mathrm{BeO , Ga_2O_3 , GeO }\)
Subtopic: Nature of Compound |
From NCERT
NEET - 2023
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NEET 2026 - Target Batch - Vital
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