Pentane has _____ structural isomers.
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Which of the following is not a nitrogenous fertiliser?
___ is amphoteric in nature.
Who formulated ‘the atomic theory’ of a matter?
Which of the following is a greenhouse gas or a gas, which can deplete the ozone layer?
Cinnabar is an ore/mineral of
Which of these is not a macronutrient for Plants?
Beryl is an ore/mineral of
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