(a) The Thermit process involves a thermite reaction, typically between iron(III) oxide (Fe2O3) and aluminium (Al). The reaction is as follows: Fe2O3 (s) + 2Al (s) → 2Fe (l) + Al2O3 (s) Explanation, In this equation, we get that: Iron(III) oxide (Fe2O3) is a solid. Aluminium (Al) is a solid. Iron (FRead more
(a) The Thermit process involves a thermite reaction, typically between iron(III) oxide (Fe2O3) and aluminium (Al). The reaction is as follows:
Fe2O3 (s) + 2Al (s) → 2Fe (l) + Al2O3 (s)
Explanation, In this equation, we get that:
Iron(III) oxide (Fe2O3) is a solid.
Aluminium (Al) is a solid.
Iron (Fe) is in its liquid state.
Aluminium oxide (Al2O3) is a solid.
The reaction produces molten iron and aluminium oxide as products.
(b) The information in the chemical equation that indicates the reaction is exothermic is the presence of the symbol “l” (liquid) next to the product “Fe” (iron). The formation of molten iron indicates that heat is released during the reaction, and the reaction is exothermic. The heat generated is often sufficient to cause the molten iron to be in a liquid state. In Additionally, the release of heat is evident in the overall exothermic nature of the Thermit process, which is commonly used for tasks like welding or repairing cracks in railway tracks on site.
In the scenario you described, where Plant X is enclosed in a glass jar with lizards and Plant Y is enclosed in another glass jar without lizards, it is likely that Plant Y will photosynthesize more. Here's the reasoning: 1. Lizard Activity: Lizards are not typically involved in the process of photoRead more
In the scenario you described, where Plant X is enclosed in a glass jar with lizards and Plant Y is enclosed in another glass jar without lizards, it is likely that Plant Y will photosynthesize more. Here’s the reasoning:
1. Lizard Activity: Lizards are not typically involved in the process of photosynthesis. In fact, they might have a negative impact on Plant X due to the potential for physical damage or disturbance to the plant. Lizards are more likely to consume insects or other prey rather than contribute to the photosynthetic process of the plant.
2. Photosynthesis Interruption: The presence of lizards in the jar with Plant X may lead to disturbances, such as movement or other activities of the lizards, which could interrupt the photosynthetic process. Photosynthesis requires a stable environment with access to light, carbon dioxide, and water. Any disruption to these conditions may hinder the efficiency of photosynthesis.
3. Controlled Environment: Plant Y, being in a jar without lizards, is more likely to have a controlled and undisturbed environment. This can allow the plant to undergo photosynthesis without external interference, resulting in a potentially higher rate of photosynthesis compared to Plant X.
4. No Mutualistic Relationship: Unlike certain symbiotic relationships in nature where certain animals contribute to the well-being of plants (e.g., pollinators or seed dispersers), there is typically no mutualistic relationship between lizards and plants involving photosynthesis. Therefore, the presence of lizards is not expected to enhance the photosynthetic activity of the plant.
In summary, Plant Y is likely to photosynthesize more effectively under the given conditions due to the absence of potential disturbances caused by the presence of lizards. Plant X, in the jar with lizards, may experience disruptions that could affect its photosynthetic efficiency.
• Ravi made the bisexual flower unisexual thereby encouraging crosspollination instead of self-pollination. • Cross-pollination will increase variation and thereby the chances of having more disease-free offspring
• Ravi made the bisexual flower unisexual thereby encouraging crosspollination instead of self-pollination.
• Cross-pollination will increase variation and thereby the chances of having more disease-free offspring
• Adrenaline induces the sweat glands to produce more sweat. • It acts on the heart to increase the contraction of its muscles/pumping causing improved oxygen delivery. • It acts on blood vessels of the digestive system constricting them.
• Adrenaline induces the sweat glands to produce more sweat.
• It acts on the heart to increase the contraction of its muscles/pumping causing improved oxygen delivery.
• It acts on blood vessels of the digestive system constricting them.
Yes, the statement is correct. Plants respire throughout the whole day, while photosynthesis process takes place only in the presence of sunlight. In daytime, CO₂ produced during respiration is used by the plants in photosynthesis. So, CO₂ is not released into the environment. The oxygen produced duRead more
Yes, the statement is correct. Plants respire throughout the whole day, while photosynthesis process takes place only in the presence of sunlight. In daytime, CO₂ produced during respiration is used by the plants in photosynthesis. So, CO₂ is not released into the environment. The oxygen produced during photosynthesis, is released into air through stomata.
Now, try to understand that – at night, when there is no photosynthesis process is happen, no oxygen is released. Also, CO₂ produced during respiration is not used by the plants. So, it is released in the air.
The Thermit process is used for repairing cracks in railway tracks on site. (a) Write the equation for the reaction taking place in the process, mentioning the physical states of the reactants and products. (b) What information in the chemical equation indicates that the reaction is exothermic?
(a) The Thermit process involves a thermite reaction, typically between iron(III) oxide (Fe2O3) and aluminium (Al). The reaction is as follows: Fe2O3 (s) + 2Al (s) → 2Fe (l) + Al2O3 (s) Explanation, In this equation, we get that: Iron(III) oxide (Fe2O3) is a solid. Aluminium (Al) is a solid. Iron (FRead more
(a) The Thermit process involves a thermite reaction, typically between iron(III) oxide (Fe2O3) and aluminium (Al). The reaction is as follows:
Fe2O3 (s) + 2Al (s) → 2Fe (l) + Al2O3 (s)
Explanation, In this equation, we get that:
Iron(III) oxide (Fe2O3) is a solid.
Aluminium (Al) is a solid.
Iron (Fe) is in its liquid state.
Aluminium oxide (Al2O3) is a solid.
The reaction produces molten iron and aluminium oxide as products.
(b) The information in the chemical equation that indicates the reaction is exothermic is the presence of the symbol “l” (liquid) next to the product “Fe” (iron). The formation of molten iron indicates that heat is released during the reaction, and the reaction is exothermic. The heat generated is often sufficient to cause the molten iron to be in a liquid state. In Additionally, the release of heat is evident in the overall exothermic nature of the Thermit process, which is commonly used for tasks like welding or repairing cracks in railway tracks on site.
See lessA plant X was enclosed in a glass jar with some lizards. A similar plant Y was enclosed in another glass jar but without lizards. Both the jars are kept under the same light conditions for a few hours. Which plant is likely to photosynthesize more and why?
In the scenario you described, where Plant X is enclosed in a glass jar with lizards and Plant Y is enclosed in another glass jar without lizards, it is likely that Plant Y will photosynthesize more. Here's the reasoning: 1. Lizard Activity: Lizards are not typically involved in the process of photoRead more
In the scenario you described, where Plant X is enclosed in a glass jar with lizards and Plant Y is enclosed in another glass jar without lizards, it is likely that Plant Y will photosynthesize more. Here’s the reasoning:
1. Lizard Activity: Lizards are not typically involved in the process of photosynthesis. In fact, they might have a negative impact on Plant X due to the potential for physical damage or disturbance to the plant. Lizards are more likely to consume insects or other prey rather than contribute to the photosynthetic process of the plant.
2. Photosynthesis Interruption: The presence of lizards in the jar with Plant X may lead to disturbances, such as movement or other activities of the lizards, which could interrupt the photosynthetic process. Photosynthesis requires a stable environment with access to light, carbon dioxide, and water. Any disruption to these conditions may hinder the efficiency of photosynthesis.
3. Controlled Environment: Plant Y, being in a jar without lizards, is more likely to have a controlled and undisturbed environment. This can allow the plant to undergo photosynthesis without external interference, resulting in a potentially higher rate of photosynthesis compared to Plant X.
4. No Mutualistic Relationship: Unlike certain symbiotic relationships in nature where certain animals contribute to the well-being of plants (e.g., pollinators or seed dispersers), there is typically no mutualistic relationship between lizards and plants involving photosynthesis. Therefore, the presence of lizards is not expected to enhance the photosynthetic activity of the plant.
In summary, Plant Y is likely to photosynthesize more effectively under the given conditions due to the absence of potential disturbances caused by the presence of lizards. Plant X, in the jar with lizards, may experience disruptions that could affect its photosynthetic efficiency.
See lessRavi cultivated mustard, a plant with bisexual flowers, on his farm. His plants were diseased due to a gene defect and therefore had reduced yield. Ravi removed the stamens from the diseased plants and also planted fresh disease-free mustard plants where he removed the pistils. How will Ravi’s strategy help in improving the yield of mustard?
• Ravi made the bisexual flower unisexual thereby encouraging crosspollination instead of self-pollination. • Cross-pollination will increase variation and thereby the chances of having more disease-free offspring
• Ravi made the bisexual flower unisexual thereby encouraging crosspollination instead of self-pollination.
See less• Cross-pollination will increase variation and thereby the chances of having more disease-free offspring
In animals, hormones can be secreted by one organ and can act on multiple organs. Justify this statement by explaining the effect of a single animal hormone on three organs.
• Adrenaline induces the sweat glands to produce more sweat. • It acts on the heart to increase the contraction of its muscles/pumping causing improved oxygen delivery. • It acts on blood vessels of the digestive system constricting them.
• Adrenaline induces the sweat glands to produce more sweat.
See less• It acts on the heart to increase the contraction of its muscles/pumping causing improved oxygen delivery.
• It acts on blood vessels of the digestive system constricting them.
“All plants give out oxygen during day and carbon dioxide during night”. Do you agree with this statement? Give reason.
Yes, the statement is correct. Plants respire throughout the whole day, while photosynthesis process takes place only in the presence of sunlight. In daytime, CO₂ produced during respiration is used by the plants in photosynthesis. So, CO₂ is not released into the environment. The oxygen produced duRead more
Yes, the statement is correct. Plants respire throughout the whole day, while photosynthesis process takes place only in the presence of sunlight. In daytime, CO₂ produced during respiration is used by the plants in photosynthesis. So, CO₂ is not released into the environment. The oxygen produced during photosynthesis, is released into air through stomata.
See lessNow, try to understand that – at night, when there is no photosynthesis process is happen, no oxygen is released. Also, CO₂ produced during respiration is not used by the plants. So, it is released in the air.