Practise original CBSE Class 10 Science competency based questions across all 13 chapters, with MCQs, assertion-reason, case studies, answers and worked solutions for Physics, Chemistry and Biology.
Question 1MCQ · Analyse · 1 mark
Life Processes · Nutrition in plants
A destarched plant is exposed to sunlight with part of a leaf covered by opaque paper. After the starch test, only the uncovered part turns blue-black. What is supported?
Yeast is mixed with sugar solution in a warm flask under oxygen-limited conditions. A balloon over the mouth slowly inflates. Which gas is mainly responsible?
