Sucrose

Q.

Why sucrose is a non-reducing sugar?

Q.

Is sucrose a non-reducing carbohydrate?

Q. Which of the following is non-reducing sugar?

1. Starch
2. Sucrose
3. Maltose
4. Galactose

Q. Calculate the specific rotation of invert sugar given that $[\alpha {]}_D=+{52.7}^o$ for D-glucose and $[\alpha {]}_D=-{92.4}^o$ for D-fructose.

1. $+{19.9}^o$
2. $-{19.9}^o$
3. $+{25.0}^o$
4. $-{25.0}^o$

Q. Excess of acidified solution of KI was added to 30mL H2O2 solution. The iodine liberated required 25mL of 0.4 N Na2S2O3 solution. The volume strength of H2O2 solution is?

Q. Match the sugars with their source

1. Glucose
2. Sucrose
3. Lactose
4. Fructose

Q. Explain resonance of pyrimidine and pyrol