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Which one of these is not true for benzene?
| 1. | It forms only one type of monosubstituted product |
| 2. | There are three carbon-carbon single bonds and three carbon-carbon double bonds |
| 3. | The heat of hydrogenation of benzene is less than its theoretical value |
| 4. | The bond angle between carbon-carbon bonds is 120° |
51%
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The IUPAC name of acrylaldehyde is:
1. prop-2-en-1-al
2. propenylaldehyde
3. but-2-en-1-al
4. propenal
2. propenylaldehyde
3. but-2-en-1-al
4. propenal
57%
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The structures 
represents:
represents:1. Chain isomerism
2. Position isomerism
3. Chain as well as position isomerism
4. Functional isomerism
2. Position isomerism
3. Chain as well as position isomerism
4. Functional isomerism
53%
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Petrol for aviation purpose must contain:
1. Straight chain hydrocarbons
2. Aromatic hydrocarbons
3. Olefinic hydrocarbons
4. Highly branched chain paraffins
2. Aromatic hydrocarbons
3. Olefinic hydrocarbons
4. Highly branched chain paraffins
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The number of atoms contained in one face-centred cubic unit cell of a monoatomic substance is:
1. 1
2. 2
3. 4
4. 6
2. 2
3. 4
4. 6
71%
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