The Aldol Addition

Q.

Molecular mass of glucose molecule (C₆H₁₂O₆) is:

1. 192 g

2. 172 g

3. 180 g

4. 182 g

Q. Haemoglobin contains 0.334 % of iron by weight.The molecular weight of haemoglobin isapproximately 67200/The number of iron atoms(Atomic weight of Fe is 56)) present in onemolecule of haemoglobin is

Q.

The number of aldol reaction(s) that occur in the given transformation is:

1. 1

2. 2

3. 3

4. 4

Q. 0.8 mole of a mixture of CO amd CO2 requires exactly 40g of NaOH in solution for complete conversionof all Co2 into Na2CO3. how many moles more of NaOH would it require for conversion into Na2CO3 if the mixture is completely oxidised into Co2 ?

Q. 28. 20g of Mgco3react and gives 8g of Mgo and Co2 then find the purity of Mgco3

Q. 26. Cyclohexane on ozonolysis followed by reaction with zinc dust and water gives compound E. Compound E on further treatment wih aqueous KOH yields compound F.Compound F is

Q. what is inter molecular canizzaro reaction?

Q. Consider the reactions:

The final product contains the functional groups:

1. $-OHand-COOH$
2. $-OHand-CHO$
3. $\stackrel{O}{\stackrel{||}{-C-}}and-OH$
4. $only-CHO$

Q. Which of the following are examples of aldol condensation?

1. $2C{H}_{3}CHO\stackrel{Dil.NaOH}{\to }C{H}_{3}CHOHC{H}_{2}CHO$
2. $2C{H}_{3}COC{H}_3\stackrel{Dil.NaOH}{\to }\left(C{H}_3{)}_{2}C\right(HO)C{H}_{2}COC{H}_3$
3. $2HCHO\stackrel{Dil.NaOH}{\to }C{H}_{3}OH$
4. $C_6{H}_{5}CHO+HCHO\stackrel{Dil.NaOH}{\to }{C}_6{H}_{5}C{H}_{2}OH$

Q.

Aldol condensation will not be observed in

1. Chloral

2. Phenyl acetaldehyde

3. Hexanal

4. Ethanol