Chemistry MCQs
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Question 172hard
A mixture of water and alcohol can be separated by
Question 173easy
Which one is a naturally occuring noble gas?
Question 174medium
Total number of naturally occurring elements
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Question 175hard
The coloured discharge tubes for advertisement mainly contain
Question 176medium
Element 106 was discovered by
Question 177hard
The gas used for filling weather balloons is
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Question 178easy
The most abundant element is
Question 179hard
A balloon filled with helium rises in air because
Question 180medium
Which one of the following is also known as solution ?