Which method will be employed to test the hardness of water?
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Carnotite is an ore/mineral of _____.
What is the ratio of masses of hydrogen and oxygen in the water?
The most abundant element in the earth's atmosphere is
Constantan is alloyed from ...... metals.
Which of the following is most important for absorption of heat radiated from the Sun as well as from the Earth?
Which of the following is a greenhouse gas or a gas which can deplete the ozone layer?
Terylene is a condensation polymer of ethylene glycol and which acid?
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