1 - 10 of 80 Questions
# | Question | Ans |
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1. |
A secondary alkanol can be oxidized to give an? A. alkanone B. alkyne C. alkanoic acid D. alkanal Detailed Solutionsecondary alkanols (alcohols) can be oxidised to alkanones (ketones)There is an explanation video available below. |
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2. |
Which of the following will give a precipitate with an aqueous solution of copper (I) chloride? A. But-2-ene B. But-1-ene C. But-2-yne D. But-1-yne |
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3. |
The IUPAC name for CH\(_3\)CH\(_2\)COOCH\(_2\)CH\(_3\) is A. methylpropanoate B. ethylethanoate C. ethylpropanoate D. methylethanoate |
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4. |
A certain hydrocarbon on complete combustion at s.t.p produced 89.6dm\(^3\) of CO\(_2\) and 54g of water. The hydrocarbon should be A. C\(_6\)H\(_6\) B. C\(_4\)H\(_{10}\) C. C\(_5\)H\(_{10}\) D. C\(_4\)H\(_6\) Detailed SolutionC\(_x\)H\(_y\) + (x + y/4)O\(_2\) \(\to\) x CO\(_2\) + y/2 H\(_2\)O89.6 dm\(^3\) \(\to\) x moles CO\(_2\) 22.4 dm\(^3\) \(\to\) 1 mole CO\(_2\) x = \(\frac{89.6}{22.4}\) = 4 moles CO\(_2\) 54g of H\(_2\)O \(\to\) k moles H\(_2\)O 18g H\(_2\)O \(\to\) 1 mole H\(_2\)O k = \(\frac{54}{18}\) = 3 moles H\(_2\)O From the equation above, x = 4 k = y/2 = 3 y/2 = 3 \(\implies\) y = 6 \(\therefore\) The hydrocarbon C\(_x\)H\(_y\) = C\(_4\)H\(_6\) There is an explanation video available below. |
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5. |
2-methylprop-1-ene is an isomer of? A. 3-methyl but-1-ene B. 2-methyl but-1-ene C. but-2-ene D. pent-2-ene Detailed SolutionIsomers of Butene: are But-1-ene, But-2-ene, 2-Methylpropene / 2-methylprop-1-eneThere is an explanation video available below. |
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6. |
Hydrocarbons which will react with Tollen's reagent conform to the general formula A. C\(_n\)H\(_{2n}\) B. C\(_n\)H\(_{2n + 2}\) C. C\(_n\)H\(_{2n - 2}\) D. C\(_n\)H\(_{2n + 1}\)OH |
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7. |
The IUPAC name of the compound CF\(_3\)CHBrCl is A. 2-chloro-2-bromo-1,1,1-trifluoroethane B. 2-bromo-2-chloro-1,1,1-trifluoroethane C. 1-bromo-1-chloro-2,2,2-trifluoroethane D. 1,1,1-trifluoro-2-bromo-2-chloroethane |
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8. |
A synthetic rubber is not obtained from the polymerization of? A. neoprene B. isoprene C. butandiene D. hexane |
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9. |
Burning magnesium ribbon in air removes which of the following A. i and iv only B. i, ii, iii and iv only C. i only D. i and ii only |
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10. |
Which of the following is the best starting material for the preparation of oxygen? Heating of trioxonitrate (v) with A. Pb B. Zn C. Ca D. Na |
1. |
A secondary alkanol can be oxidized to give an? A. alkanone B. alkyne C. alkanoic acid D. alkanal Detailed Solutionsecondary alkanols (alcohols) can be oxidised to alkanones (ketones)There is an explanation video available below. |
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2. |
Which of the following will give a precipitate with an aqueous solution of copper (I) chloride? A. But-2-ene B. But-1-ene C. But-2-yne D. But-1-yne |
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3. |
The IUPAC name for CH\(_3\)CH\(_2\)COOCH\(_2\)CH\(_3\) is A. methylpropanoate B. ethylethanoate C. ethylpropanoate D. methylethanoate |
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4. |
A certain hydrocarbon on complete combustion at s.t.p produced 89.6dm\(^3\) of CO\(_2\) and 54g of water. The hydrocarbon should be A. C\(_6\)H\(_6\) B. C\(_4\)H\(_{10}\) C. C\(_5\)H\(_{10}\) D. C\(_4\)H\(_6\) Detailed SolutionC\(_x\)H\(_y\) + (x + y/4)O\(_2\) \(\to\) x CO\(_2\) + y/2 H\(_2\)O89.6 dm\(^3\) \(\to\) x moles CO\(_2\) 22.4 dm\(^3\) \(\to\) 1 mole CO\(_2\) x = \(\frac{89.6}{22.4}\) = 4 moles CO\(_2\) 54g of H\(_2\)O \(\to\) k moles H\(_2\)O 18g H\(_2\)O \(\to\) 1 mole H\(_2\)O k = \(\frac{54}{18}\) = 3 moles H\(_2\)O From the equation above, x = 4 k = y/2 = 3 y/2 = 3 \(\implies\) y = 6 \(\therefore\) The hydrocarbon C\(_x\)H\(_y\) = C\(_4\)H\(_6\) There is an explanation video available below. |
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5. |
2-methylprop-1-ene is an isomer of? A. 3-methyl but-1-ene B. 2-methyl but-1-ene C. but-2-ene D. pent-2-ene Detailed SolutionIsomers of Butene: are But-1-ene, But-2-ene, 2-Methylpropene / 2-methylprop-1-eneThere is an explanation video available below. |
6. |
Hydrocarbons which will react with Tollen's reagent conform to the general formula A. C\(_n\)H\(_{2n}\) B. C\(_n\)H\(_{2n + 2}\) C. C\(_n\)H\(_{2n - 2}\) D. C\(_n\)H\(_{2n + 1}\)OH |
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7. |
The IUPAC name of the compound CF\(_3\)CHBrCl is A. 2-chloro-2-bromo-1,1,1-trifluoroethane B. 2-bromo-2-chloro-1,1,1-trifluoroethane C. 1-bromo-1-chloro-2,2,2-trifluoroethane D. 1,1,1-trifluoro-2-bromo-2-chloroethane |
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8. |
A synthetic rubber is not obtained from the polymerization of? A. neoprene B. isoprene C. butandiene D. hexane |
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9. |
Burning magnesium ribbon in air removes which of the following A. i and iv only B. i, ii, iii and iv only C. i only D. i and ii only |
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10. |
Which of the following is the best starting material for the preparation of oxygen? Heating of trioxonitrate (v) with A. Pb B. Zn C. Ca D. Na |