| 1. | In diamond, each carbon atom is bonded to four other carbon atoms to form ? | |
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a structure of a ring
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a structure in the shape of a football
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a hexagonal array
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a rigid three-dimensional structure
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Report Question| 2. | Ethanol on complete oxidation gives ? | |
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acetone/ethanone
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ethanal
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CO2 and water
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acetic acid/ethanoic acid
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| 3. | Solubility of alcohol in water is due to ? | |
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ionisation
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hydrogen bonding
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volatile nature of alcohol
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low density of alcohol
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| 4. | Which of the following statement is or are incorrect ? | |
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Carbon compounds (or organic compounds) are covalent compounds having low melting points and boiling points.
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Most of the carbon compounds are non-conductors of electricity.
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Although oxides of carbon (like carbon monoxide and carbon dioxide), carbonates, hydrogen carbonates and carbides are also carbon compounds and they are considered to be organic compounds.
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The compounds of carbon are known as organic compounds.
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| 5. | CH3 – CH2 – OH + Alkaline KMnO4 + Heat ? CH3 – COOH. In the above given reaction, alkaline kmno4 acts as ? | |
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Dehydrating agent
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Catalyst
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Reducing agent
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Oxidising agent
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| 6. | A hydrocarbon should have a minimum of how many carbon atoms to show isomerism ? | |
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Six
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Five
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Four
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Three
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| 7. | Artificial flavour for orange is obtained from ? | |
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methyl butyrate
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octyl acetate
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isoamyl valerate
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amyl acetate
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| 8. | The First Member Of Alkynes Homologous Series Is ? | |
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Methane
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Propyne
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Ethene
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Ethyne
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| 9. | While cooking, if the bottom of the vessel is getting blackened on the outside, it means that ? | |
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The fuel is burning completely
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The fuel is wet
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The fuel is not burning completely
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The food is not cooked completely
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| 10. | Which is not correct for isomers of a compound ? | |
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They have same molecular formula
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They have same structural formula
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They differ in chemical properties
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They differ in physical properties
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