AIIMS 2018 Physics Temperature vs Time Graph MCQ Question
A solid substance is at 30°C. To this substance heat energy is supplied at a constant rate. Then temperature versus time graph is as shown in the figure. The substance is in liquid state for the portion (of the graph)
BC
CD
ED
EF
Correct Answer
Detailed Explanation
Option B is correct because it accurately represents the process of photosynthesis, where plants convert carbon dioxide (CO₂) and water (H₂O) into glucose (C₆H₁₂O₆) and oxygen (O₂) using sunlight as energy. This process occurs primarily in the chloroplasts of plant cells, highlighting the importance of chlorophyll in capturing light energy.
Options A, C, and D may depict other biological processes such as cellular respiration or nutrient absorption, which do not involve the direct conversion of CO₂ and H₂O into glucose and oxygen, thus failing to illustrate the fundamental aspects of photosynthesis. Understanding these distinctions is crucial for grasping plant biology and energy transformation in ecosystems.
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