Which of the following plays an important role in photosynthesis?
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In an acid base reaction which product is produced along with a salt?
Which of the following elements has the lowest melting point?
The atoms of the elements having same difference between mass number and atomic number are called ______.
Who formulated ‘the atomic theory’ of a matter?
In the reaction H2O2 + Cl2 -----> 2HCl + O2, H2O2 acts as
A human body works within the pH range of
A difference between 2 longitudes at equator is nearby equivalent to _____ km.
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