What is contained in Chlorophyll ?
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Which among the following is not an example of emulsion?
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?
Which of the following can be beaten and converted into thin sheets?
Removal of carbon particles from air involves the principle of
Which of the following is a greenhouse gas or a gas which can deplete the ozone layer?
Chemical formula for sulphurous acid is:
Which metal is liquid at room temperature?
Mercury is the only metal that remains in liquid at room temperature.
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