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प्रश्न
What is meant by global warming?
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उत्तर
Global warming means the increase in the average effective temperature of Earth’s surface due to an increase in the amount of greenhouse gases in its atmosphere.
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संबंधित प्रश्न
45 g of water at 50°C in a beaker is cooled when 50 g of copper at 18° C is added to it. The contents are stirred till a final constant temperature is reached. Calculate this final temperature. The specific heat capacity of copper is 0.39 J g-1K-1 and that of water is 4.2 J g-1K-1. State the assumption used.
Explain the term boiling ?
State the effect of enhancement of green house effect.
Write the approximate values of the specific latent heat of fusion of ice.
Specific heat capacity of substance A is 3.8 J g-1 K-1whereas the specific heat capacity of substance B is 0.4 J g-1 K-1. Which of the two is a good conductor of heat? How is one led to this conclusion?
Why are athletes advised to put on extra clothes after competing on event?
Answer the following question.
Why do we generally consider two specific heats of a gas?
Two cylinders of equal height and radius are made of copper and aluminum. Which of them conducts heat faster?
Two blocks P and Q of different metals having their mass in the ratio 2 : 1 are given same amount of heat. Their temperature rises by same amount. Compare their specific heat capacities.
