Write the equation of photosynthesis?
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Define Atom ?
How do you express the total hardness of water?
Why does a white paper appear white, when light is not to fall on it ?
Explain about Oxide ?
Why is sometimes a succession of echoes heard ?
In winter, on a cold morning, the cement feels colder to the foot than a carpet. Why ?
What is viscosity-coefficient of a liquid?
How is petroleum manufactured?
What is an indicator electrode?
Cholesterol is a compound suspected of causing hardening of the arteries. The formula of cholesterol is C27H46O. a. A sample of cholesterol is isolated from the arterial lining of a 60-year-old American male. What is the formula of this compound? b. Cholesterol is extracted from a chicken’s egg. What is the formula of this compound?
Why is estimation of copper done at 620 nm wave length?
What is buffer?