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Q. No.Identify the correct resonance structures of carbon dioxide from one given below
a.
b.
c.
d.
Choose the correct option:
| 1. | (a, b) | 2. | (b, c) |
| 3. | (c, d) | 4. | (b, d) |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe reason for the small radius of Ga compared to Al is-.
a. Poor screening effect of d and f orbitals
b. Increase in nuclear charge
c. Presence of higher orbitals
d. Higher atomic number
Choose the correct option
1. (a, b)
2. (b, c)
3. (c, d)
4. (a, d)
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe linear shape of CO2 is due to _______.
a. sp3 hybridisation of carbon
b. sp hybridisation of carbon
c. bonding between carbon and oxygen
d. sp2 hybridisation of carbon
Choose the correct option
1. (a, b)
2. (b, c)
3. (c, d)
4. (a, d)
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyMe3SiCl is used during polymerization of organ silicones because
| a. | Chain length of organic silicone polymers can be controlled by adding |
| b. | blocks the end terminal of silicone polymer. |
| c. | improves the quality and yield of the polymer. |
| d. | acts as a catalyst during polymerization. |
Choose the correct option:
| 1. | (a, b) | 2. | (b, c) |
| 3. | (c, d) | 4. | (a, d) |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe correct statements among the following are:
| a. | Fullerenes have dangling bonds. |
| b. | Fullerenes are cage-like molecules. |
| c. | Graphite is thermodynamically the most stable allotrope of carbon. |
| d. | Graphite is slippery and hard and therefore used as a dry lubricant in machines. |
1. (a, b)
2. (b, c)
3. (c, d)
4. (a, d)
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyMatch the species given in Column I with the properties mentioned in Column II.
| Column I | Column II |
| A. \(\text{BF}^-_4\) | 1. Oxidation state of the central atom is +4 |
| B. AlCl3 | 2. Tetrahedral shape |
| C. SnO | 3. Lewis acid |
| D. PbO2 | 4. Can be further oxidized |
Codes:
| A | B | C | D | |
| 1. | 2 | 3 | 4 | 1 |
| 2. | 1 | 2 | 3 | 4 |
| 3. | 1 | 4 | 3 | 2 |
| 4. | 4 | 1 | 3 | 2 |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyMatch the species given in Column I with the hybridisation given in Column II.
| Column I | Column II |
| A. Boron in | i. sp2 |
| B. Aluminium in | ii. sp3 |
| C. Carbon in Buckminsterfullerene | iii. sp3d2 |
| D. Germanium in |
Codes:
| Options: | A | B | C | D |
| 1. | ii | iii | i | iii |
| 2. | i | i | iii | ii |
| 3. | iii | ii | ii | i |
| 4. | i | iii | ii | iii |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyGiven below are two statements:
| Assertion (A): | If aluminium atoms replace a few silicon atoms in three-dimensional network of silicon dioxide, the overall structure acquires a negative charge. |
| Reason (R): | Aluminium is trivalent while silicon is tetravalent. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is True but (R) is False. |
| 4. | (A) is False but (R) is True. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe element which exists in a liquid state for a wide range of temperatures and can be used for measuring high temperature is:
| 1. | B | 2. | Al |
| 3. | Ga | 4. | In |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich of the following is a Lewis acid?
1.
2.
3.
4.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologySelect Chapter Topics:
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