MCQ
Glucose contains in addition to aldehyde group
- AOne secondary $OH$ and four primary $OH$ group
- ✓One primary $OH$ and four secondary $OH$ group
- CTwo primary $OH$ and three secondary $OH$ group
- DThree primary $OH$ and two secondary $OH$ group
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$(i)$ Grows from external surface by collecting substance on it.
$(ii)$ Grows from internal surface like living.
$(iii)$ Do not grow at all.
Which of the followings option is correct?