Number of moles of CO2 present in 24 grams of carbon is
1 mole of CO2 contain 12gms of carbon and 44 gms of CO2
therefore 24 gms of carbon is present in 88 gms of CO2 or 2 moles of CO2
The percentage of nitrogen in the air is about
Methane contributes towards global warming so it is called a _________________ gas.
Which of the following is a metal?
Which of the following group is NOT Dobereiner Triads?
Safety matches contain
Air ___________________ are the substances which contaminate the air.
By using which foam the Researchers from Indian Institute of Technology – Bombay have made a low cost piezo resistive vibration sensor?
Which of the following is NOT a compound?
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