Answer Happy

Would appreciate some help with questions 47, 49, 50 and 51.
Thank You in advance!
47. What is the predicted product of the reaction shown? CH₂CH₂OH HOT 111 I IV 11 V A. B. II C. III D. IV E. V 48. What reagents are necessary to carry out the conversion shown? OH A. 1. NH3; 2. LIAIH4; 3. H₂O B. 1. (CH3)2NH; 2. LiAlH4; 3. H₂O C. 1. SOCI2; 2. (CH3)2NH; 3. H₂O D. 1. (CH3)2NH; 2. heat; 3. H₂O E. 1. CH3NH; 2. LiAlH4; 3. H₂O 49. What is the predicted product of the reaction shown? 1 NaCN Bri 2. HO, heat OH ABCDE A. (CH3)2CHCH2COOH (CH3)2CHCH₂CH₂COOH (CH3)2CHCH2CN (CH3)2CHCH₂CH₂CN E. (CH3)2CHCH₂OH 50. What is the predicted major product of the reaction shown? Se H3O* Cl₂ to the th g& IV I B. II III IV V 51. What reagents are needed to carry out the conversion shown?. OH 1. PCC/CH₂Cl2; 2. H3O+/Br2; 3. NaCN 1. PCC/CH₂Cl2; 2. NaCN; 3. H3O+ 1. NaOEt; 2. H3O+ 1. PCC/CH₂Cl2; 2. H₂O*/CN; NaOCH₂CH3 1. NaOH; 2. NaCN; 3. heat B. C. D. A. ARCAE C. D. E. A. B. C. D. E.