To convert from Kelvin (K) to Celsius (°C), you subtract 273.15 from the temperature in Kelvin. Therefore, 300 K - 273.15 = 26.85 °C. Since Celsius temperature is often rounded to the nearest whole number, 26.85 °C is approximately 27 °C. Hence, 300 K is equal to 27 °C. Therefore, the correct answerRead more
To convert from Kelvin (K) to Celsius (°C), you subtract 273.15 from the temperature in Kelvin. Therefore, 300 K – 273.15 = 26.85 °C. Since Celsius temperature is often rounded to the nearest whole number, 26.85 °C is approximately 27 °C. Hence, 300 K is equal to 27 °C. Therefore, the correct answer is [B] 27 °C.
When there is a sudden increase in temperature at a place, the relative humidity typically decreases. This decrease occurs because warmer air has a higher capacity to hold moisture compared to cooler air. As the temperature rises, the air's ability to retain water vapor increases, causing the relatiRead more
When there is a sudden increase in temperature at a place, the relative humidity typically decreases. This decrease occurs because warmer air has a higher capacity to hold moisture compared to cooler air. As the temperature rises, the air’s ability to retain water vapor increases, causing the relative humidity to drop unless there is a corresponding increase in the absolute humidity (amount of water vapor in the air).
However, if there is no significant change in the moisture content of the air, the relative humidity will decrease due to the relative relationship between the actual water vapor content and the maximum possible water vapor content at the new, higher temperature. Therefore, in most cases, a sudden increase in temperature leads to a decrease in relative humidity, making [B] Decreases the correct answer.
Among the options provided, water has the highest heat capacity. Heat capacity is the amount of heat energy required to raise the temperature of a substance by one degree Celsius. Water's high heat capacity means it can absorb and store a large amount of heat energy with only a small change in tempeRead more
Among the options provided, water has the highest heat capacity. Heat capacity is the amount of heat energy required to raise the temperature of a substance by one degree Celsius. Water’s high heat capacity means it can absorb and store a large amount of heat energy with only a small change in temperature. This property makes water exceptionally effective at regulating temperature, which is why it is widely used as a coolant in various applications and plays a crucial role in climate and weather patterns.
In contrast, substances like iron, gold, and benzene have much lower heat capacities, meaning they heat up and cool down more quickly when exposed to heat. Water’s superior heat capacity makes it unique and highly valuable for thermal management. Therefore, the correct answer is [B] Water.
Wearing two thin shirts in winter is more comfortable than wearing one thick shirt due to the insulating effect of the air layer trapped between the two shirts. Air is a poor conductor of heat, which makes it an excellent insulator. When you wear two thin shirts, the layer of air between them acts aRead more
Wearing two thin shirts in winter is more comfortable than wearing one thick shirt due to the insulating effect of the air layer trapped between the two shirts. Air is a poor conductor of heat, which makes it an excellent insulator. When you wear two thin shirts, the layer of air between them acts as an insulating barrier that reduces the transfer of heat from your body to the colder external environment.
This trapped air layer minimizes heat loss and retains body warmth more effectively than a single thick shirt, which lacks this additional insulating layer. The combined effect of the two shirts and the insulating air layer creates a more efficient thermal barrier, enhancing warmth and comfort in cold weather. Thus, the correct answer is [C] The layer of air between two shirts works as a medium of insulation.
Sealed biscuits become crispy when stored in the refrigerator due to the low humidity environment within the fridge. Refrigerators are designed to keep the air dry, which helps in preserving food by reducing moisture levels. When biscuits are placed in this low-humidity environment, any excess moistRead more
Sealed biscuits become crispy when stored in the refrigerator due to the low humidity environment within the fridge. Refrigerators are designed to keep the air dry, which helps in preserving food by reducing moisture levels. When biscuits are placed in this low-humidity environment, any excess moisture present in them is absorbed by the dry air, effectively removing it from the biscuits. This drying process helps to restore and maintain the crispiness of the biscuits, as moisture is the primary factor that makes them soft and soggy.
Unlike options that suggest high humidity or pressure effects, the actual mechanism involves the refrigerator’s ability to lower humidity, creating a drying effect on the food items stored within. Therefore, the correct answer is [B] Humidity inside the refrigerator reduces and hence excess moisture is absorbed, which keeps the biscuits crispy.
Which temperature measured in Celsius is equal to 300 K?
To convert from Kelvin (K) to Celsius (°C), you subtract 273.15 from the temperature in Kelvin. Therefore, 300 K - 273.15 = 26.85 °C. Since Celsius temperature is often rounded to the nearest whole number, 26.85 °C is approximately 27 °C. Hence, 300 K is equal to 27 °C. Therefore, the correct answerRead more
To convert from Kelvin (K) to Celsius (°C), you subtract 273.15 from the temperature in Kelvin. Therefore, 300 K – 273.15 = 26.85 °C. Since Celsius temperature is often rounded to the nearest whole number, 26.85 °C is approximately 27 °C. Hence, 300 K is equal to 27 °C. Therefore, the correct answer is [B] 27 °C.
See lessIf there is a sudden increase in the temperature of a place, then the relative humidity
When there is a sudden increase in temperature at a place, the relative humidity typically decreases. This decrease occurs because warmer air has a higher capacity to hold moisture compared to cooler air. As the temperature rises, the air's ability to retain water vapor increases, causing the relatiRead more
When there is a sudden increase in temperature at a place, the relative humidity typically decreases. This decrease occurs because warmer air has a higher capacity to hold moisture compared to cooler air. As the temperature rises, the air’s ability to retain water vapor increases, causing the relative humidity to drop unless there is a corresponding increase in the absolute humidity (amount of water vapor in the air).
However, if there is no significant change in the moisture content of the air, the relative humidity will decrease due to the relative relationship between the actual water vapor content and the maximum possible water vapor content at the new, higher temperature. Therefore, in most cases, a sudden increase in temperature leads to a decrease in relative humidity, making [B] Decreases the correct answer.
See lessWhich of the following has higher heat capacity?
Among the options provided, water has the highest heat capacity. Heat capacity is the amount of heat energy required to raise the temperature of a substance by one degree Celsius. Water's high heat capacity means it can absorb and store a large amount of heat energy with only a small change in tempeRead more
Among the options provided, water has the highest heat capacity. Heat capacity is the amount of heat energy required to raise the temperature of a substance by one degree Celsius. Water’s high heat capacity means it can absorb and store a large amount of heat energy with only a small change in temperature. This property makes water exceptionally effective at regulating temperature, which is why it is widely used as a coolant in various applications and plays a crucial role in climate and weather patterns.
In contrast, substances like iron, gold, and benzene have much lower heat capacities, meaning they heat up and cool down more quickly when exposed to heat. Water’s superior heat capacity makes it unique and highly valuable for thermal management. Therefore, the correct answer is [B] Water.
See lessIn winter, two thin shirts give us more comfort than one thick shirt because
Wearing two thin shirts in winter is more comfortable than wearing one thick shirt due to the insulating effect of the air layer trapped between the two shirts. Air is a poor conductor of heat, which makes it an excellent insulator. When you wear two thin shirts, the layer of air between them acts aRead more
Wearing two thin shirts in winter is more comfortable than wearing one thick shirt due to the insulating effect of the air layer trapped between the two shirts. Air is a poor conductor of heat, which makes it an excellent insulator. When you wear two thin shirts, the layer of air between them acts as an insulating barrier that reduces the transfer of heat from your body to the colder external environment.
This trapped air layer minimizes heat loss and retains body warmth more effectively than a single thick shirt, which lacks this additional insulating layer. The combined effect of the two shirts and the insulating air layer creates a more efficient thermal barrier, enhancing warmth and comfort in cold weather. Thus, the correct answer is [C] The layer of air between two shirts works as a medium of insulation.
See lessWhen sealed biscuits are kept inside the refrigerator for some time, they become crispy because
Sealed biscuits become crispy when stored in the refrigerator due to the low humidity environment within the fridge. Refrigerators are designed to keep the air dry, which helps in preserving food by reducing moisture levels. When biscuits are placed in this low-humidity environment, any excess moistRead more
Sealed biscuits become crispy when stored in the refrigerator due to the low humidity environment within the fridge. Refrigerators are designed to keep the air dry, which helps in preserving food by reducing moisture levels. When biscuits are placed in this low-humidity environment, any excess moisture present in them is absorbed by the dry air, effectively removing it from the biscuits. This drying process helps to restore and maintain the crispiness of the biscuits, as moisture is the primary factor that makes them soft and soggy.
Unlike options that suggest high humidity or pressure effects, the actual mechanism involves the refrigerator’s ability to lower humidity, creating a drying effect on the food items stored within. Therefore, the correct answer is [B] Humidity inside the refrigerator reduces and hence excess moisture is absorbed, which keeps the biscuits crispy.
See less