8.1. Aldehydes and ketones Chemistry - 8.1. Aldehydes and ketones

Identify the correct reagents that would bring about the following transformation.

• ✓
  ($i$) $\mathrm{BH}_3$, ($ii$) $\mathrm{H}_2 \mathrm{O}_2 / \stackrel{\ominus}{\mathrm{O}} \mathrm{H}$, ($iii$) $\mathrm{PCC}$
• B
  ($i$) $\mathrm{BH}_3$, ($ii$) $\mathrm{H}_2 \mathrm{O}_2 / \stackrel{\ominus}{\mathrm{O}} \mathrm{H}$, ($iii$) alk. $\mathrm{KMnO}_4$, ($iv$) $\mathrm{H}_3 \mathrm{O}^{\oplus}$
• C
  ($i$) $\mathrm{H}_2 \mathrm{O} / \mathrm{H}^{+}$, ($ii$) $\mathrm{PCC}$
• D
  ($i$) $\mathrm{H}_2 \mathrm{O} / \mathrm{H}^{+}$, ($ii$) $\mathrm{CrO}_3$

Answer: A.

• A
  alkaline copper sulphate
• B
  alkaline solution of sodium potassium tartrate (Rochelle's salt)
• C
  aqueous sodium citrate
• ✓
  aqueous copper sulphate

Answer: D.

Identify product $( A )$ is the following reaction :

• A
  
  
• ✓
  
  
• C
  
  
• D
  
  

Answer: B.

Identify the major product obtained in the following reaction:

• A
  
  
• B
  
  
• C
  
  
• ✓
  
  

Answer: D.

Identify the final product [D] obtained in the following sequence of reactions.

• A
  $HC \equiv C ^{\ominus} Na ^{+}$
• ✓
  
  
• C
  
  
• D
  $C _4 H _{10}$

Answer: B.