Which of the following gases is heavier than oxygen?
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Pentane has _____ structural isomers.
Air expands when it _______________.
Who among the following is the executive head of state in India?
When was 'Pregnancy Aid Scheme' launched to help pregnant women financially with Rs. 6000?
In April 2017, Emma Morano, the world’s oldest woman has passed away at the age of 117. Which country was she from?
How many members of upper house (Rajya Sabha) can be nominated by President of India?
Who among the following was the first grammarian of the Sanskrit language?