Question 41 : Organic compounds are found only in.
1. Animal kingdom
2. Mineral kingdom
3. Vegetable kingdom
4. Both animal and vegetable kingdom
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Question 42 : n-pentane and iso pentane can be distinguished by
1. Br₂
2. N3
3. KMnO4
4. O3
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Question 43 : Organic compound can be formed by.
1. Animals only
2. Plants and animals and synthesis in laboratory
3. Plants only
4. Plants and animals only
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Question 44 : Which gas is obtained on treating aluminium carbide with diluted HCl
1. Ethane
2. Acetylene
3. Methane
4. Ethyne
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Question 45 : Gasoline has the formula
1. C₈– C₁₀
2. C₆– C₈
3. C₃– C₅
4. C₁₀– C₁₂
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Question 46 : Pyrolysis of coal with heavy oil in presence of H2 at 250 atm. 350oC and catalyst yields.
1. A mixture of low boiling hydrocarbons
2. CH₄
3. C₃H₈
4. C₂H₆
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Question 47 : Marsh gas mainly contains
1. C₂H₂
2. CO
3. CH₄
4. H₂S
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Question 48 : An aqueous solution of a substance on electrolysis gives ethane. The substance is
1. Active acid
2. Acetamide
3. Potassium acetate
4. Ethyl acetate
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Question 49 : Ethyl alcohol is heated with conc. H₂SO The product formed is
1. C₂H₆
2. C₂H₂
3. C₂H₄
4. CH₃COOC₂H₅
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Question 50 : The overlapping of orbitals in benzene is of the type
1. p – p
2. sp – sp
3. 2 and 3
4. sp2– sp2
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