Home
Class 12
CHEMISTRY
Assertion : m-Bromo toluene can be prepa...

Assertion : m-Bromo toluene can be prepared by m-toluidene
Reason : Amino group is meta directing

(a)Assertion and reason both are correct statements and reason explains the assertion.
(b)Both assertion and reason are wrong statements
(c)Assertion is correct statement and reason is wrong statement.
(d)Assertion is wrong statement and reason is correct statement.

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question, we need to analyze the assertion and the reason provided: **Assertion:** m-Bromo toluene can be prepared by m-toluidene. **Reason:** Amino group is meta directing. ### Step-by-Step Solution: 1. **Understanding the Assertion:** - The assertion states that m-bromo toluene can be synthesized from m-toluidene. - m-Toluidene (methyl-aminobenzene) has the amino group (-NH2) and a methyl group (-CH3) at the meta positions on the benzene ring. 2. **Analyzing the Reaction:** - When we consider the electrophilic aromatic substitution reaction, the amino group is known to be an activating group that directs incoming electrophiles to the ortho and para positions relative to itself, not the meta position. - Therefore, if we were to brominate m-toluidene, we would expect bromine to add at the ortho or para positions, not the meta position. 3. **Conclusion on the Assertion:** - Since m-bromo toluene cannot be prepared from m-toluidene due to the directing effects of the amino group, the assertion is **incorrect**. 4. **Understanding the Reason:** - The reason states that the amino group is meta directing. - However, as established, the amino group is actually ortho and para directing due to its electron-donating nature. 5. **Conclusion on the Reason:** - Since the reason is also incorrect, we conclude that both the assertion and the reason are false. ### Final Answer: Both the assertion and the reason are wrong statements. Therefore, the correct option is: (b) Both assertion and reason are wrong statements.
Promotional Banner

Similar Questions

Explore conceptually related problems

Assertion (A) Vitamin D can be stored in our body. Reason (R) Vitamin D is fat soluble vitamin. (a)Assertion and reason both are correct statements and reason explains the assertion. (b)Both assertion and reason are wrong statements (c)Assertion is correct statement and reason is wrong statement. (d)Assertion is wrong statement and reason is correct statement.

Assertion (A) Glycine must be taken through diet. Reason (R) It is an essential amino acid. (a)Assertion and reason both are correct statements and reason explains the assertion. (b)Both assertion and reason are wrong statements (c)Assertion is correct statement and reason is wrong statement. (d)Assertion is wrong statement and reason is correct statement.

Assertion (A) D(+)- Glucose is dextrorotatory in nature. Reason (R) 'D' represents its dextrorotatory nature. (a)Assertion and reason both are correct statements and reason explains the assertion. (b)Both assertion and reason are wrong statements (c)Assertion is correct statement and reason is wrong statement (d)Assertion is wrong statement and reason is correct statement.

Assertion (A) In presence of enzyme, substrate molecule can be attacked by the reagent effectively. Reason (R) Active sites of enzymes hold the substrate molecule in a suitable position. (a)Assertion and reason both are correct statements and reason explains the assertion. (b)Both assertion and reason are wrong statements (c)Assertion is correct statement and reason is wrong statement. (d)Assertion is wrong statement and reason is correct statement.

Assertion (A) beta -glycosidic linkage is present in maltose. Reason (R) Maltose is composed of two glucose units in which C-1 of one glucose unit is linked to C-4 of another glucose unit. (a)Assertion and reason both are correct statements and reason explains the assertion. (b)Both assertion and reason are wrong statements (c)Assertion is correct statement and reason is wrong statement. (d)Assertion is wrong statement and reason is correct statement.

Assertion (A) Phenols give o-and p-nitrophenol on nitration with conc. HNO_(3) and H_(2)SO_(4) mixture. Reason (R) -OH group in phenol is o-,p-directing. (a)Assertion and reason both are correct and reason is correct explanation of assertion. (b)Assertion and reason both are wrong statements. (c)Assertion is correct statement but reason is wrong statement. (d)Assertion is wrong statement but reason is correct statement.

Assertion (A) Addition reaction of water to but-1-ene in acidic medium yields butan-1-ol. Reason (R) Addition of water in acidic medium proceeds through the formation of primary carbocation. (a)Assertion and reason both are correct and reason is correct explanation of assertion. (b)Assertion and reason both are wrong statements. (c)Assertion is correct statement but reason is wrong statement. (d)Assertion is wrong statement but reason is correct statement.

Assertion (A) Phenol forms 2, 4, 6-tribromophenol o treatment with Br_(2) in carbon disulphide at 273K. Reason (R) Bromine polarises in carbon disulphide. (a)Assertion and reason both are correct and reason is correct explanation of assertion. (b)Assertion and reason both are wrong statements. (c)Assertion is correct statement but reason is wrong statement. (d)Assertion is wrong statement but reason is correct statement.

Assertion (A) Olefinic monomers undergo addition polymerisation Reason (R ) Polymerisation of vinyl chloride is initiated by peroixdes/persulphates (a)Assertion and Reason both are correct statement But reason does not explain Assertion (b)Assertion and Reason both are correct statements and Reason explains the Assertion. (c)Both assertion and reason are wrong statements (d)Assertion is correct statement and Reason is wrong statement

Assertion: Glucose reacts with hydroxylamine to form an oxime and alsoadds a molecule of hydrogen cyanide to give cyanohydrin. Reason: The carbonyl group is present in the open chain structure of glucose. (a) Both assertion and reason are correct statements, and reason is the correct explanation of the assertion (b) Both assertion and reason are correct statements, but reason is not the correct explanation of the assertion (c) Assertion is correct, but reason is wrong statement. (d) Assertion is wrong, but reason is correct statement.