The Biogas Program by the Ministry of New and Renewable Energy promotes biogas plants across India. It aims to convert organic waste into clean energy, reducing dependency on fossil fuels and promoting rural sustainability. Class 8 Science Curiosity Textbook Chapter 2 ...
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(i) Sugar is fermented in flask A. (ii) Test tube B shows bubbles or gas due to carbon dioxide. (iii) Without yeast, fermentation doesn’t occur and no gas forms, so the test tube stays unchanged. class 8 science chapter 2 the ...
Curd becomes sour because bacteria like Lactobacillus multiply in warm conditions, producing lactic acid. The acid gives curd its sour taste. Higher temperatures speed up this bacterial growth and souring process. class 8 science chapter 2 the invisible living world beyond ...
The bread near the sink shows mold growth due to warmth and moisture. The refrigerated bread remains unchanged because cold slows microbial activity. This proves microorganisms need warmth and moisture to grow effectively. class 8 science chapter 2 the invisible living ...
Place moist bread slices in three conditions: warm air, cold fridge and sealed airtight. After three days, compare mold growth. Mold grows best in warmth with air and moisture, proving microbes need these conditions. Class 8 NCERT Science Curiosity Chapter 2 ...