Question
Select the most appropriate 'one word' for the expression
given below. A person who studies and writes about the pastSolution
A historian is a person who studies and writes about the past, especially regarding human affairs.
Geologist studies Earth and rocks.
Biologist studies living organisms.
Astronomer studies celestial objects like stars and planets.
What is the chemical formula of bleaching powder?
Which gas turns into a liquid at the lowest temperature?
How many carbon atoms are present in a molecule of propene?
How many oxygen atoms are present in a molecule of Aluminum sulfate, Al₂(SO4₄)₃ ?
_____________ has the maximum attraction force between the molecules.
Repetition of sound produced by reflection of sound waves is called-
Which substance is also known as 'Oil of Vitriol'?
Whose experiments supports Abiotic synthesis?
Which material is commonly used for making casts and sculptures?
The combining power of an element is called its:
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