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Q. No.| 1. | Carbon has the tendency to form chains and rings with itself. |
| 2. | Silicon and Germanium are useful in semiconductor industry. |
| 3. | Boron trifluoride is a strong Lewis acid. |
| 4. | Common oxidation states of group 14 elements are +1 and +3. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology| 1. | The relative stability of group 13 elements in +1 oxidation state varies as : Al < Ga < In < Tl. |
| 2. | Boron trioxide is acidic, aluminium and gallium trioxides are amphoteric while indium and thallium trioxides are basic. |
| 3. | The hybridisation of Al in \(\left[\mathrm{Al}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{3+}\) is \(\text{d}^2\text{ sp}^3.\) |
| 4. | Two isotopes of Boron, namely \(^{10}\!\mathrm{~B}(19 \%)\) and \(^{11}\! \mathrm{~B}(81 \%)\) are known. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyMatch the allotropes of cabon given in List I with the respective characteristics given in List II.
| List-I | List-II | ||
| A. | Coke | I. | Carbon atoms are sp3 hybridised. |
| B. | Diamond | II. | Used as a dry lubricant |
| C. | Fullerene | III. | Used as a reducing agent |
| D. | Graphite | IV. | Cage like molecules |
Choose the correct answer from the options given below:
| Options: | (A) | (B) | (C) | (D) |
| 1. | III | IV | I | II |
| 2. | II | IV | I | III |
| 3. | IV | I | II | III |
| 4. | III | I | IV | II |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology1. \(\mathrm{TlI > TlI_3}\)
2. \(\mathrm{TlCl_3 > TlCl}\)
3. \(\mathrm{InI_3 > InI }\)
4. \(\mathrm{AlCl > AlCl_3 }\)
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology| 1. | Ga | 2. | In |
| 3. | Al | 4. | B |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology\(\begin{aligned} & \mathrm{Al}^+ / \mathrm{Al}=+0.55 \mathrm{~V} \text { and } \mathrm{Tl}^{+} / \mathrm{Tl}=-0.34 \mathrm{~V} \\ & \mathrm{Al}^{3+} / \mathrm{Al}=-1.66 \mathrm{~V} \text { and } \mathrm{Tl}^{3+} / \mathrm{Tl}=+1.26 \mathrm{~V} \end{aligned} \)
The incorrect statement among the following is:
1. Al is more electropositive than TI
2. Tl3+ is a good reducing agent than Tl1+
3. Al+ is unstable in solution.
4. Tl can be easily oxidized to Tl+ as compared to Tl3+
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology| 1. | Both the Boron atoms are sp2 hybridised. |
| 2. | There are two 3-centre-2-electron bonds. |
| 3. | The four terminal B-H bonds are two centre two-electron bonds. |
| 4. | The four terminal Hydrogen atoms and the two Boron atoms lie in one plane. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology| 1. | Both diamond and graphite are used as dry lubricants. |
| 2. | Diamond and graphite have a two-dimensional network. |
| 3. | Diamond is covalent and graphite is ionic. |
| 4. | Diamond is sp³ hybridised and graphite is sp² hybridized. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich of the following is the correct statement?
1. Ga+ is more stable than ln+.
2. Al+ is more stable than ln+.
3. Ga+ is more stable than Al+.
4. Al+ is more stable than Ga+.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe chain length of silicones can be controlled by adding:
1. \(\mathrm{CH_3SiCl_3}\)
2. \(\mathrm{SiCl_4}\)
3. \(\mathrm{(CH_3)_2SiCl_2}\)
4. \(\mathrm{(CH_3)_3SiCl}\)
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