Haemoglobin has the highest affinity with which of the following?
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Which of the following is a greenhouse gas or a gas which can deplete the ozone layer?
Potassium Permanganate is used for purifying drinking water, because________
Which one of the following forms of phosphorus is most reactive?
Which of the following molecules is joined by a double covalent bond?
Alkenes were earlier known as ______.
If an atom has atomic number 10 and mass number 23, then what will be the number of protons and neutrons in an atom respectively?
Earth's crust mainly contains ______.
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