Q. No.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
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
In which of the following pairs of molecules/ions, the central atoms have \(\mathrm{sp}^2\) hybridisation?
1.
\(\mathrm{NO}^-_2 ~\mathrm{and}~ \mathrm{NH}_3\)
2.
\(\mathrm{BF}_3 ~\mathrm{and}~ \mathrm{NO}^-_2\)
3.
\(\mathrm{NH}^-_2 ~\mathrm{and}~ \mathrm{H_2O}\)
4.
\(\mathrm{BF}_3 ~\mathrm{and}~ \mathrm{NH}^-_2\)
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
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
In which of the following molecules are all the bonds not equal ?
(1) ClF3
(2) BF3
(3) AlF3
(4) NF3
Which of the following compounds has a higher hydration energy than the lattice energy?
1. BaSO4
2. MgSO4
3. CaSO4
4. SrSO4
The correct order of increasing thermal stability of K2CO3, MgCO3, CaCO3 and BeCO3 is:
(1) BeCO3 < MgCO3 < K2CO3 < CaCO3
(2) BeCO3 < MgCO3 < CaCO3 < K2CO3
(3) MgCO3 < BeCO3 < CaCO3 < K2CO3
(4) K2CO3 < MgCO3 < CaCO3 < BeCO3
The tendency of BF3, BCl3, and BBr3 to behave as Lewis acid decreases in the sequence
1. BCl3 > BF3 > BBr3
2. BBr3 > BCI3 > BF3
3. BBr3 > BF3 > BCl3
4. BF3 > BCl3 > BBr3
The correct increasing order of bond angles in the following species is:
| 1. | \(Cl_2O<ClO_2<ClO^-_2\) | 2. | \(ClO_2<Cl_2O<ClO^-_2\) |
| 3. | \(Cl_2O<ClO^-_2<ClO_2\) | 4. | \(ClO^-_2<Cl_2O<ClO_2\) |
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