The correct option is (C). The use of plastic as packaging material increases non-biodegradable waste. Plastics do not decompose naturally, leading to long-term environmental pollution and harm to soil, water, and living organisms. CBSE Class 10 Science Question Paper 2025 with ...
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The correct option is (B). The correct statements are (ii), (iii), (iv). Ozone is poisonous but in the stratosphere, it forms a protective layer shielding Earth from harmful ultraviolet rays that cause skin cancer and damage living tissues. Science important questions ...
The correct option is (A). When a black rabbit (BB) is crossed with a white rabbit (bb), all offspring (Bb) have black fur. This shows that black colour is dominant over white, making the cross BB × bb. Science important questions ...
The correct option is (D). The correct combination is Blood pressure: Medulla in hindbrain. The medulla oblongata controls involuntary actions such as heartbeat, breathing, and blood pressure, maintaining vital functions essential for life. Class 10 Science Sample Paper for half yearly ...
The correct option is (B). When there is a lack of oxygen, muscle cells perform anaerobic respiration, breaking down glucose into lactic acid and releasing a small amount of energy. Hence, the products formed are lactic acid and energy. Class 10 ...