- 1(current)
Q. No.| List I (Molecule) |
List II (Number and types of bond/s between two carbon atoms) |
||
| 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. A-IV, B-III, C-II, D-I
2. A-III, B-IV, C-II, D-I
3. A-III, B-IV, C-I, D-II
4. A-I, B-IV, C-II, D-III
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology1. 12, 2, 1
2. 11, 2, 0
3. 12, 3, 0
4. 11, 3, 1
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology\(\mathrm{ OHC-CH=CH-{^2}CH_2-{^1}COOCH_3}\)
| 1. | sp2 and sp3 | 2. | sp2 and sp2 |
| 3. | sp3 and sp2 | 4. | sp3 and sp3 |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe 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
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe 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
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology
| 1. | 4 | 2. | 8 |
| 3. | 12 | 4. | 16 |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology
is aromatic because it has:1. 7 p-orbitals and 6 unpaired electrons
2. 7 p-orbitals and 7 unpaired electrons
3. 6 p-orbitals and 7 unpaired electrons
4. 6 p-orbitals and 6 unpaired electrons
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe correct order of increasing bond length of C-H, C-O, C-C and C=C is:
1.
2.
3.
4.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe 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)
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe correct order regarding the electronegativity of hybrid orbitals of carbon is:
1.
2.
3.
4.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology- 1(current)
Q. No.
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