Q.1 By treating toluene with chromyl chloride in CCl4 and decomposing the complex with water, the reaction is named as –

Q.2 In the preparation of benzaldehyde by Stephen’s reaction the main reactant cannot be named as –

Q.3 Oxidation of toluene to benzaldehyde has to be easily done with –

Q.4 Benzaldehyde will be formed in the reaction – 

Q.6 Benzo radical in the following is –

Q.7 –CHO group in benzene nucleus –

Q.8 In connection with benzaldehyde which of the following statement is incorrect –

Q.11 An organic aromatic compound containing C, H & O has a characteristic smell of bitter almonds. This on oxidation with potassium permanganate gives a monobasic acid. The sodium salt of which on distillation with sodalime gives benzene. What is the original compound –

Q.12 Benzaldehyde is oxidised and reduced simultaneously in the presence of –

Q.14 C6H5CHO + PCl5 , the product is –

Q.15 Benzaldehyde is heated with a conc. solution of KOH to form –

Q.16 Benzaldehyde and formaldehyde give a common reaction –

Q.17 Benzaldehyde can be converted to benzyl alcohol by –

Q18 Benzyl alcohol from benzaldehyde is obtained in the following reaction –

Q.19 Benzaldehyde condenses with acetic anhydride to give cinnamic acid in presence of –

Q.21 Hydrobenzamide is formed in the reaction –

Q.23 Benzaldehyde shows different reaction than aliphatic aldehyde with the following reagent –

Q.24 HCHO and C6H5CHO can be distinguished by –

Q.25 Which statement is true about benzaldehyde –

Q.1 Benzaldehyde reacts with ammonia to form

Q.2 Which one of the following reactant can be used to distinguish between benzaldehyde and benzyl alcohol –

Q.3 What are the products formed when a mixture of benzaldehyde and formaldehyde is heated with conc. alkali –

Q.4 Which of the following compounds will react with ethanolic KCN –

Q.5 Benzaldehyde is used in all except –

Q.6 Benzylidene acetone is the product of the reaction of an organic compound (A) with acetone in the presence of ethanolic sodium hydroxide. The organic compounds (A) is –

Q.7 Which of the following is most stable –

Q.9 Replacement of carbonylic oxygen is observed in the reaction –

Q.10 Use is made of the following reagent to convert benzaldehyde to benzoyl chloride –

Q.11 Benzyl phenyl ketone is –

Q.12 The following compound is obtained on refluxing benzaldehyde with aqueos ethanolic potassium cyanide –

Q.13 An organic compound contains 40% C and 6.66% H. Its empirical formula is –

Q.14 Choose the wrong statement –

Q.15 Etard reaction in the following is –

Q.17 Replacement of carbonyl oxygen takes place in the reaction –

Q.18 Aromatic aldehydes react with primary amines to form the following –

Q.19 Which aldehyde is used in the manufacture of perfumes –

Q.21 Which of the following is not a correct statement –

Q.23 Aromatic aldehydes undergo disproportionation in presence of sodium or potassium hydroxide to give corresponding alcohol and acid. The reaction is known as -

Q.1 By which of the following sets of reagents can benzene be formylated to benzaldehyde in the presence of anhydrous AlCl3?

Q.2 Benzaldehyde on being heated with acetaldehyde in the presence of aqueous NaOH forms–

Q.3 When calcium benzoate is heated with calcium formate, the major product formed is–

Q.5 Benzaldehyde reacts with an excess of anhydrous ethyl alochol in the presence of HCl to give–

Q.1 Which one of the following undergoes reaction with 50% sodium hydroxide solution to give the corresponding alcohol and acid ?

Q.4 The structures of compounds J, K and L respectively, are -