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The atomic weight of nitrogen is?
Which of the following are chemical changes?
I. cooking of food
II. digestion of food
III. freezing of water
IV. water is heated up
Which of the following is a non-metal that remains liquid at room temperature?
Which one of the following is not a mixture?
A 'breath test' used by traffic police to check drunken driving uses?
What is the chemical name for the compound CuCO\(_{3}\)?
What is the IUPAC name for the following compound? HC\(\equiv\)CCH\(_{3}\)
The scientist who stated that matter can be converted into energy is?
The enzyme that converts glucose to ethyl alcohol is?
Give the common name for the following compound (CH\(_{3}\))\(_{2}\) CH CH\(_{2}\) -Br