Given the following hydrocarbon:

The state of hybridisation of carbons marked 2, 3, 5 and 6 in the following hydrocarbon are, respectively :

1. sp, sp3, sp2 and sp3

2. sp3, sp2, sp2 and sp

3. sp, sp2, sp2 and sp3

4. sp, sp2 sp3 and sp2

Subtopic:  Hybridisation |
 82%
From NCERT
NEET - 2009
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What is the dominant intermolecular force on bond that must be overcome in converting

liquid CH3OH to a gas?

1. Hydrogen bonding

2. Dipole-dipole interaction

3. Covalent bonds

4. London dispersion force

Subtopic:  Octate, Isoelectronic Species, Lewis Structure & Formal Charge |
 80%
NEET - 2009
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The angular shape of ozone molecule (O3) consists of

1. 1 sigma and 2 pi bonds

2. 2 sigma and 2 pi bonds

3. 1 sigma and 1 pi bonds

4. 2 sigma and 1 pi bonds

Subtopic:  Types of Chemical Bond | V.S.E.P.R & V.B.T |
 72%
NEET - 2008
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In the hydrocarbon

     CH3-CH=CH-CH2-CCH

     6      5     4   3      2    1

The state of hybridisation of carbons 1,3 and 5 are in the following sequence

(1) sp2, sp, sp3                       

(2) sp, sp3, sp2

(3) sp, sp2, sp3                       

(4) sp3, sp2, sp

Subtopic:  Hybridisation |
 84%
NEET - 2008
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The correct order of increasing thermal stability of K2CO3, MgCO3, CaCO3 and BeCOis:
(1) BeCO3 < MgCO3 < K2CO< CaCO3

(2) BeCO3 < MgCO3 < CaCO3 < K2CO3

(3) MgCO3 < BeCO3 < CaCO3 < K2CO3

(4) K2CO3 < MgCO3 < CaCO3 < BeCO3

Subtopic:  Lattice & Hydration Energy |
 59%
NEET - 2007
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Which among the following compounds has higher hydration energy than the lattice energy?

1. BaSO4                           

2. MgSO4

3. CaSO4                           

4. SrSO4

Subtopic:  Lattice & Hydration Energy |
 62%
From NCERT
NEET - 2007
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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 |
 65%
From NCERT
NEET - 2006
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The electronegativity difference between N and F is greater than that between N and H yet the dipole moment of NH3 (1.5 D) is larger than that of NF3 (0.2 D). This is because:

(1) in NH3 as well as in NF3 the atomic dipole and bond dipole are in the same direction
(2) in NH3 the atomic dipole and bond dipole are in the same direction whereas in NFthese are in opposite directions
(3) in NH3 as well as NF3 the atomic dipole and bond dipole are in opposite directions
(4) in NH3 the atomic dipole and bond dipole are in the opposite directions whereas in NF3 these are in the same directions

Subtopic:  Polarity |
 82%
From NCERT
NEET - 2006
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The correct order of electronegativity of hybrid orbitals of carbon is:

(1) sp>sp2<sp3             

(2) sp>sp2>sp3

(3) sp<sp2>sp3             

(4) sp<sp2<sp3

Subtopic:  Hybridisation |
 78%
NEET - 2006
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Which of the following species has a linear shape?

(1) NO2-

(2) SO2

(3) NO2+

(4) O3

Subtopic:  Hybridisation |
 71%
NEET - 2006
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