Question : How many isotopes of hydrogen elements are there?
Option 1: 2
Option 2: 3
Option 3: 4
Option 4: None of the options is correct
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Correct Answer: 3
Solution : The correct option is 3.
There are three isotopes of hydrogen: protium (¹ H), deuterium (² H), and tritium (³ H). The most common isotope is protium, which consists of one proton and one electron. Deuterium is heavier than protium as it possesses one proton, one neutron and one electron. Tritium comprises one proton, two neutrons and one electron.
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Question : How many hydrogen atoms are there in a molecule of methane?
Option 2: 6
Option 4: 3
Question : Which of the following has deuterium as one of its isotopes?
Option 1: Nitrogen
Option 2: Carbon
Option 3: Hydrogen
Option 4: Oxygen
Question : Which of the following controls the wind speed?
Option 1: Pressure gradient
Option 2: Rotation of Earth
Option 3: Insolation
Question : What is measured by the Respirometer?
Option 1: Recipe taste and quality
Option 2: Rate of breathing
Option 3: Evaporation process
Question : How many oxygen atoms are there in a molecule of acetic acid?
Option 1: 1
Option 2: 2
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