Question

Which of the following treatment will convert starch directly into glucose?

• A. Heating with dilute $H_2{SO}_4$
• B. Fermentation by diastase
• C. Fermentation by zymase
• D. Heating with dilute $NaOH$

Answer 1

The correct option is A Heating with dilute $H_2{SO}_4$

Answer: $\left(A\right)$ Heating with diute $H_{2}S{O}_4$

Commercially glucose is obtained by hydrolysis of starch by heating it with dilute $H_{2}S{O}_4$ at 393 K under pressure.

$\underset{Starch}{{\left(C_6{H}_{10}{O}_5\right)}_n}+n{H}_{2}O\underset{393K;2-3atm}{\overset{H^{+}}{\to }}\underset{Glucose}{n{C}_6{H}_{12}}{O}_6$