Chlorination of methane takes place by -
1. Elimination
2.
3. Free radical
4.
The products formed after ozonolysis of Pent-2-ene are -
1. Ethanal, Methanal
2. Ethanal, Propanal
3. Ethanal, Butanal
4. Ethanal, Ethanal
Among the two isomers given above, the reason behind higher boiling point of one isomer as compared to the order is :
1. Cis - less polar than trans
2. Trans - more polar than cis
3. Cis - more intermolecular forces
4. Trans - more dipole-dipole interactions
Incorrect statement regarding aromaticity among the following is:
1. | The compound should have a planar structure. |
2. | The π–electrons of the compound are completely delocalized in the ring. |
3. | The total number of π–electrons present in the ring should be equal to (4n + 2) π electrons, where n = 0, 1, 2 … etc. This is known as Huckel’s rule. |
4. | The compound should have a linear structure. |
Not an aromatic molecule is/are :
1. | 2. | ||
3. | 4. | All of the above |
The catalyst used in the conversion of benzene into acetophenone is done -
1) Anhydrous AlCl3
2) HNO3
3) HCl
4) Heating
The effect of branching on an alkane :
1. Increases its boiling point
2. Decreases its boiling point
3. Doesn’t change its boiling point
4. None of the above
The product obtained on the addition of HBr to propene in the absence and presence of benzoyl peroxide are respectively
1. 1-Bromopropane, 2-Bromopropane
2. 2-Bromopropane, 1-Bromopropane
3. 1-Bromopropanol, 2-Bromopropanone
4. 2-Bromopropanone, 1-Bromopropanol
Decreasing order of acidic behavior of benzene, n-hexane, and ethyne is -
1. Hexane > Ethyne > Benzene
2. Benzene > Hexane > Ethyne
3. Ethyne > Benzene > Hexane
4. Benzene > Ethyne > Hexene
Incorrect statement towards reactivity of benzene is:
1. | It undergoes electrophilic substitution reactions very easily |
2. | Nucleophiles are attracted by a benzene ring |
3. | Benzene is a planar molecule |
4. | It has 12 sigma bonds |