Which of these are the point of contact between bones and cartilage?
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What will be the value of temperature of hot reservoir in a carnot cycle, if the temperature of cold reservoir is 25°C, heat absorbed from hot reservoir is 12J and heat rejected to cold reservoir is 4J?
A carnot engine extracts 1200J of energy from a hot reservoir. What is the amount of work done by it? Temperatures of hot and cold reservoirs are 200K and 150K respectively.
The efficiency of a carnot engine is 50%. The temperature of the hot reservoir is kept constant. By what amount should the temperature of the cold reservoir be decreased so that efficiency becomes 60%.
Half many five-membered rings are there in fullerenes?
What is the suspension of graphite in water known as?
Which of the following is an amorphous allotrope of carbon?
Which of the following allotropes of carbon are hard in nature?