List I (Molecule) |
List II (Number and types of bond/s between two carbon atoms) |
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A. | ethane | I. | \(\mathrm{one ~\sigma-bond~ and~ two~ \pi-bonds}\) |
B. | ethene | II. | \(\text { two } \pi \text {-bonds }\) |
C. | carbon molecule, \(\mathrm{C} _2\) |
III. | \(\text { one } \sigma \text {-bond }\) |
D. | ethyne | IV. | \(\mathrm{one ~\sigma-bond ~and ~one~ \pi-bond}\) |
1. | sp2 and sp3 | 2. | sp2 and sp2 |
3. | sp3 and sp2 | 4. | sp3 and sp3 |
The number of sigma () and pi () bonds in pent-2-en-4-yne is:
1. 13 bonds and no bond
2. 10 bonds and 3 bonds
3. 8 bonds and 5 bonds
4. 11 bonds and 2 bonds
The enolic form of ethyl acetoacetate is given below-
The number of σ and π bonds in the enolic form are respectively:
1. 18 sigma bonds and 2 pi-bonds
2. 16 sigma bonds and 1 pi-bond
3. 9 sigma bonds and 2 pi-bonds
4. 9 sigma bonds and 1 pi-bond
1. | 4 | 2. | 8 |
3. | 12 | 4. | 16 |
The correct order of increasing bond length of C-H, C-O, C-C and C=C is:
1.
2.
3.
4.
The following compounds are given for reference
(1) CH3-CH2–
(2) H2C=CH–
(3) HC≡C–
The increasing order of basic strength is:
1. (2)>(1)>(3)
2. (3) >(2) >(1)
3. (1) >(3) >(2)
4. (1) >(2)>(3)
The correct order regarding the electronegativity of hybrid orbitals of carbon is:
1.
2.
3.
4.