Analyze Each Reaction:
Reaction (A): The reaction conditions suggest Friedel-Crafts acylation using anhydrous and a carboxylic acid chloride. This reaction should proceed correctly, forming the expected acylated aromatic product.
Reaction (B): In this reaction, (Rosenmund reduction conditions) is used to reduce an acyl chloride to an aldehyde. This reaction is incorrect.
Reaction (C): This reaction involves a carboxylic acid reacting with CO and HCl under anhydrous conditions with or CuCl. However, this is not a standard reaction for carboxylic acid conversion to an acyl chloride under these conditions, so this reaction is incorrect.
Reaction (D): The conditions involve the reaction of a benzene derivative with and HCl. However, these reagents are not compatible with producing an expected product under the given conditions, making this reaction incorrect.
Conclusion:
Only Reaction (A) is correct among the given reactions. Therefore, the number of correct reactions is 1, corresponding to Option (1).
The motion of an airplane is represented by the velocity-time graph as shown below. The distance covered by the airplane in the first 30.5 seconds is km.