A change in which no new substances are formed is called _____________.
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Which of the following represents an ion?
The advantages of being an entrepreneur are
Humayun was born in the year ___________.
The profit (in Rs.) after selling an article for Rs.524 is the same as the loss (in Rs.) after selling it for Rs.452. The cost price of the article is:
Who discovered benzene?
Who discovered Fullerene (an allotrope of carbon)?
Who is the first Indian Gold Medal Winner in individual category in Olympic games?