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Q. No.The correct sequence given below contains neutral, acidic, basic, and amphoteric oxide each, respectively is:
1.
NO, ZnO, CO2, CaO
2.
ZnO, NO, CaO, CO2
3.
NO, CO2, ZnO, CaO
4.
NO, CO2, CaO, ZnO
Subtopic: Nature of Compound |
79%
Level 2: 60%+
NEET - 2023
Hints
The element with highest negative electron gain enthalpy will belong to:
1. Period 2, group 18
2. Period 2, group 17
3. Period 3, group 17
4. Period 2, group 1
1. Period 2, group 18
2. Period 2, group 17
3. Period 3, group 17
4. Period 2, group 1
Subtopic: Electron Affinity (EA) |
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Level 2: 60%+
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| Assertion (A): | The physical and chemical properties of the elements are periodic functions of their atomic numbers. |
| Reason (R): | Periodicity based on the atomic number was illustrated by Mendeleev's periodic law. |
| 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: Modern Periodic Table & Periodicity |
68%
Level 2: 60%+
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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: Nature of Compound |
97%
Level 1: 80%+
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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 |
Level 3: 35%-60%
NEET - 2023
Hints
The decreasing order of metallic character is shown by:
1. Be > Ca > K
2. K > Ca > Be
3. Ca > K > Be
4. K > Be > Ca
1. Be > Ca > K
2. K > Ca > Be
3. Ca > K > Be
4. K > Be > Ca
Subtopic: Nature of Compound |
79%
Level 2: 60%+
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The element expected to form the largest ion to achieve the nearest noble gas configuration is:
| 1. | Sodium(Na) | 2. | Oxygen(O) |
| 3. | Fluorine(F) | 4. | Nitrogen(N) |
Subtopic: Atomic Size |
57%
Level 3: 35%-60%
NEET - 2023
Hints
What is the correct order of electron gain enthalpy from least negative to most negative for the elements C, Ca, Al, F, and O?
1. Al < Ca < O < C < F
2. Al < O < C < Ca < F
3. C < F < O < Al < Ca
4. Ca < Al < C < O < F
1. Al < Ca < O < C < F
2. Al < O < C < Ca < F
3. C < F < O < Al < Ca
4. Ca < Al < C < O < F
Subtopic: Electron Affinity (EA) |
82%
Level 1: 80%+
NEET - 2013
Hints
Which of the given pairs shows the first element having higher electronegativity than the second?
| 1. | Al and B | 2. | Be and Li |
| 3. | Cl and O | 4. | Si and N |
Subtopic: Electronegativity |
67%
Level 2: 60%+
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Given below are two statements:
| Statement I: | The electronegativity of any given element is not constant. |
| Statement II: | Electronegativity varies depending on the element to which it is bound. |
| 1. | Statement l is incorrect but Statement ll is correct. |
| 2. | Both Statements l and ll are correct. |
| 3. | Both Statements l and ll are incorrect. |
| 4. | Statement l is correct but Statement ll is incorrect. |
Subtopic: Electronegativity |
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Level 2: 60%+
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