Q. No.Mellitic acid is formed by the oxidation of graphite with -
1. Chromic acid
2. Alkaline
3. Fuming
4. dil.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologySelect the correct statement(s) regarding the following reaction sequence:
1. The compound (A) is
2. The compound D is SiC
3. The compound (B) is
4. All of the above
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyCarbogen is:
1. A mixture of .
2. Used by pneumonia patients for respiration.
3. Used by victims of for respiration.
4. All of the above.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyAmphoteric oxides are:
1. Tl2O3, SiO2
2. ,
3. ,
4. Al2O3 , PbO2
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe sharp decrease in ionization enthalpy from carbon to silicon happens because of-
| 1. | Decrease in the charge of elements upon moving down the group. |
| 2. | Decrease in the atomic sizes of elements upon moving down the group. |
| 3. | Increase in the atomic sizes of elements upon moving down the group. |
| 4. | Increase in the charge of elements upon moving down the group. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe basic structural unit of silicates is-
| 1. | \( \mathrm{SiO}_4{}^{4-}\) | 2. | \(\left(\mathrm{SiO}_3\right)^{2-} \) |
| 3. | \(\mathrm{SiO}_4{ }^{2-} \) | 4. | \(\mathrm{SiO}^{-}\) |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe incorrect statement among the following options is-
| 1. | Conc. HNO3 can be transported in an aluminium container. |
| 2. | Diamond is used as an abrasive. |
| 3. | A mixture of dilute NaOH and aluminium pieces is used to declog the drain. |
| 4. | Graphite can't be used as a lubricant. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe species among the following that does not exist is-
1.
2.
3.
4.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe amphoteric oxide among the following is -
| 1. | \(\mathrm{CO}_2 \) | 2. | \(\mathrm{PbO}_2 \) |
| 3. | \(\mathrm{SiO}_2 \) | 4. | \(\mathrm{SeO}_2\) |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe reason behind carbon showing catenation property but lead does not is:
1. Due to the smaller size of C than that of Pb
2. Due to the smaller size of Pb than that of C
3. Due to the smaller ionization energy of C than that of Pb
4. Due to the inert pair effect
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology
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