Which of the following species has a linear shape?

1. NO2-

2. SO2

3. NO2+

4. O3

Subtopic:  Hybridisation | V.S.E.P.R & V.B.T |
 73%
Level 2: 60%+
AIPMT - 2006
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Which of the following is the most basic oxide?

1. Al2O3

2. Sb2O3

3. Bi2O3

4. SeO2

Subtopic:  Acidic, Basic Character & Fajan's Rule |
 63%
Level 2: 60%+
AIPMT - 2006
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Which of the following is not a correct statement?

1. The electron-deficient molecules can act as Lewis acids.
2. The canonical structures have no real existence.
3. Every AB5 molecule does in fact have a square pyramidal structure.
4. Multiple bonds are always shorter than corresponding single bonds.

Subtopic:  V.S.E.P.R & V.B.T |
 75%
Level 2: 60%+
AIPMT - 2006
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The number of unpaired electrons in a paramagnetic diatomic molecule of an element with atomic number 16 is:

1. 2

2. 3

3. 4

4. 1

Subtopic:  M.O.T |
 71%
Level 2: 60%+
AIPMT - 2006
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Identify the species that is not isostructural with SiCl₄:

1. SCl₄
2. SO₄²⁻
3. PO₄³⁻
4. NH₄⁺

Subtopic:  V.S.E.P.R & V.B.T |
 70%
Level 2: 60%+
AIPMT - 2006
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In which of the following molecules are all the bonds not equal?

1. ClF3 2. BF3
3. AlF3 4. NF3
Subtopic:  Hybridisation |
 68%
Level 2: 60%+
AIPMT - 2006
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Select the pair of isostructural species.

1. SF₄ and XeF₄
2. SO₃²⁻ and NO₃⁻
3. BF₃ and NF₃
4. BrO₃⁻ and XeO₃
Subtopic:  Hybridisation |
 75%
Level 2: 60%+
AIPMT - 2007
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Find the correct increasing order of C–O bond length among CO, CO₃²⁻ , and CO₂:

1. CO₂ < CO₃²⁻ < CO
2. CO < CO₃²⁻ < CO₂
3. CO₃²⁻ < CO₂ < CO
4. CO < CO₂ < CO₃²⁻

Subtopic:  Types of Chemical Bond |
 66%
Level 2: 60%+
AIPMT - 2007
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Identify the correct increasing order of bond order among the following species:

1. O₂⁻ < NO < C₂²⁻ < He₂⁺
2. NO < C₂²⁻ < O₂⁻ < He₂⁺
3. C₂²⁻ < He₂⁺ < NO < O₂⁻
4. He₂⁺ < O₂⁻ < NO < C₂²⁻
Subtopic:  M.O.T |
 85%
Level 1: 80%+
AIPMT - 2008
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Identify the correct increasing order of O–N–O bond angle among the following species:

1. NO₂⁻ < NO₂⁺ < NO₂
2. NO₂⁻ < NO₂ < NO₂⁺
3. NO₂⁺ < NO₂ < NO₂⁻
4. NO₂⁺ < NO₂⁻ < NO₂

Subtopic:  V.S.E.P.R & V.B.T |
 72%
Level 2: 60%+
AIPMT - 2008
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