Which of the following statement(s) is/are CORRECT?
I. Bases are soapy to touch.
II. Bases generate OH– ions.
III. Metal oxides dissolve in water to form Acidic solution.
The percentage of nitrogen in the air is about
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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?