231233
Number of electron deficient molecules among the following $\mathrm{PH}_{3}, \mathrm{~B}_{2} \mathrm{H}_{6}, \mathrm{CCl}_{4}, \mathrm{NH}_{3}, \mathrm{LiH}$ and $\mathrm{BCl}_{3}$ is
1 0
2 1
3 2
4 3
Explanation:
The species which has the vacant orbital are electron deficient in nature. $\mathrm{B}_{2} \mathrm{H}_{6}, \mathrm{BCl}_{3}$ are electron deficient because it has vacant orbital.
JEE Main-25.06.2022
GENERAL ORGANIC CHEMISTRY
231234
Which of the following carbocations is most stable?
1
2
3
4
Explanation:
More the delocalization of electron through the resonance, more will be the stability of carbocation. Here, contains the more delocalization of electron rather than the other compound due to which they get more stable.
JEE Main-29.06.2022
GENERAL ORGANIC CHEMISTRY
231237
Which of the following compounds is soluble in benzene but almost insoluble in water?
1 $\mathrm{C}_{2} \mathrm{H}_{5} \mathrm{OH}$
2 $\mathrm{CH}_{3} \mathrm{CO}_{2} \mathrm{H}$
3 $\mathrm{CH}_{3} \mathrm{CHO}$
4 $\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{NO}_{2}$
Explanation:
Nitrobenzene $\left(\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{NO}_{2}\right)$ is insoluble in water but soluble in benzene, alcohol etc. Benzene is a symmetrical compound and has 'Zero Dipole Moment', while water is a polar compound. When benzene is mixed with water, the molecular attraction will be more and benzene won't be able to interfere with the water.
Electron withdrawing groups (like halogens) increase the acidity of carboxylic acids. Proton doners are acids. Therefore, $\mathrm{HCOOH}$ is weakest acid among the given choices.
NEET Test Series from KOTA - 10 Papers In MS WORD
WhatsApp Here
GENERAL ORGANIC CHEMISTRY
231233
Number of electron deficient molecules among the following $\mathrm{PH}_{3}, \mathrm{~B}_{2} \mathrm{H}_{6}, \mathrm{CCl}_{4}, \mathrm{NH}_{3}, \mathrm{LiH}$ and $\mathrm{BCl}_{3}$ is
1 0
2 1
3 2
4 3
Explanation:
The species which has the vacant orbital are electron deficient in nature. $\mathrm{B}_{2} \mathrm{H}_{6}, \mathrm{BCl}_{3}$ are electron deficient because it has vacant orbital.
JEE Main-25.06.2022
GENERAL ORGANIC CHEMISTRY
231234
Which of the following carbocations is most stable?
1
2
3
4
Explanation:
More the delocalization of electron through the resonance, more will be the stability of carbocation. Here, contains the more delocalization of electron rather than the other compound due to which they get more stable.
JEE Main-29.06.2022
GENERAL ORGANIC CHEMISTRY
231237
Which of the following compounds is soluble in benzene but almost insoluble in water?
1 $\mathrm{C}_{2} \mathrm{H}_{5} \mathrm{OH}$
2 $\mathrm{CH}_{3} \mathrm{CO}_{2} \mathrm{H}$
3 $\mathrm{CH}_{3} \mathrm{CHO}$
4 $\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{NO}_{2}$
Explanation:
Nitrobenzene $\left(\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{NO}_{2}\right)$ is insoluble in water but soluble in benzene, alcohol etc. Benzene is a symmetrical compound and has 'Zero Dipole Moment', while water is a polar compound. When benzene is mixed with water, the molecular attraction will be more and benzene won't be able to interfere with the water.
Electron withdrawing groups (like halogens) increase the acidity of carboxylic acids. Proton doners are acids. Therefore, $\mathrm{HCOOH}$ is weakest acid among the given choices.
231233
Number of electron deficient molecules among the following $\mathrm{PH}_{3}, \mathrm{~B}_{2} \mathrm{H}_{6}, \mathrm{CCl}_{4}, \mathrm{NH}_{3}, \mathrm{LiH}$ and $\mathrm{BCl}_{3}$ is
1 0
2 1
3 2
4 3
Explanation:
The species which has the vacant orbital are electron deficient in nature. $\mathrm{B}_{2} \mathrm{H}_{6}, \mathrm{BCl}_{3}$ are electron deficient because it has vacant orbital.
JEE Main-25.06.2022
GENERAL ORGANIC CHEMISTRY
231234
Which of the following carbocations is most stable?
1
2
3
4
Explanation:
More the delocalization of electron through the resonance, more will be the stability of carbocation. Here, contains the more delocalization of electron rather than the other compound due to which they get more stable.
JEE Main-29.06.2022
GENERAL ORGANIC CHEMISTRY
231237
Which of the following compounds is soluble in benzene but almost insoluble in water?
1 $\mathrm{C}_{2} \mathrm{H}_{5} \mathrm{OH}$
2 $\mathrm{CH}_{3} \mathrm{CO}_{2} \mathrm{H}$
3 $\mathrm{CH}_{3} \mathrm{CHO}$
4 $\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{NO}_{2}$
Explanation:
Nitrobenzene $\left(\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{NO}_{2}\right)$ is insoluble in water but soluble in benzene, alcohol etc. Benzene is a symmetrical compound and has 'Zero Dipole Moment', while water is a polar compound. When benzene is mixed with water, the molecular attraction will be more and benzene won't be able to interfere with the water.
Electron withdrawing groups (like halogens) increase the acidity of carboxylic acids. Proton doners are acids. Therefore, $\mathrm{HCOOH}$ is weakest acid among the given choices.
231233
Number of electron deficient molecules among the following $\mathrm{PH}_{3}, \mathrm{~B}_{2} \mathrm{H}_{6}, \mathrm{CCl}_{4}, \mathrm{NH}_{3}, \mathrm{LiH}$ and $\mathrm{BCl}_{3}$ is
1 0
2 1
3 2
4 3
Explanation:
The species which has the vacant orbital are electron deficient in nature. $\mathrm{B}_{2} \mathrm{H}_{6}, \mathrm{BCl}_{3}$ are electron deficient because it has vacant orbital.
JEE Main-25.06.2022
GENERAL ORGANIC CHEMISTRY
231234
Which of the following carbocations is most stable?
1
2
3
4
Explanation:
More the delocalization of electron through the resonance, more will be the stability of carbocation. Here, contains the more delocalization of electron rather than the other compound due to which they get more stable.
JEE Main-29.06.2022
GENERAL ORGANIC CHEMISTRY
231237
Which of the following compounds is soluble in benzene but almost insoluble in water?
1 $\mathrm{C}_{2} \mathrm{H}_{5} \mathrm{OH}$
2 $\mathrm{CH}_{3} \mathrm{CO}_{2} \mathrm{H}$
3 $\mathrm{CH}_{3} \mathrm{CHO}$
4 $\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{NO}_{2}$
Explanation:
Nitrobenzene $\left(\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{NO}_{2}\right)$ is insoluble in water but soluble in benzene, alcohol etc. Benzene is a symmetrical compound and has 'Zero Dipole Moment', while water is a polar compound. When benzene is mixed with water, the molecular attraction will be more and benzene won't be able to interfere with the water.
Electron withdrawing groups (like halogens) increase the acidity of carboxylic acids. Proton doners are acids. Therefore, $\mathrm{HCOOH}$ is weakest acid among the given choices.
contains the more delocalization of electron rather than the other compound due to which they get more stable.