Question : What is the mass of one mole of a substance in grams is called?
Option 1: Nuclear mass
Option 2: Atomic mass
Option 3: Molar mass
Option 4: Molecular mass
Correct Answer: Molar mass
Solution : The correct option is Molar mass
Molar mass is measured in grams per mole (g/mol) and reflects the mass of one mole of that substance's entities (atoms, molecules, and ions). It is a crucial concept in chemistry for various calculations, such as measuring the mass or number of moles of a specific amount of a substance. It is quantitatively equal to the material's molecular or atomic weight. One mole of a particular substance has a fixed mass. Wilhelm Ostwald first used the term "mole."
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Question : The process of transformation of a substance in a gaseous state into a liquid state due to a change in pressure or temperature of the substance is called:
Option 1: condensation
Option 2: saturation
Option 3: evaporation
Option 4: transformation
Question : What is the atomicity of Phosphorus?
Option 1: Poly-atomic
Option 2: Monoatomic
Option 3: Diatomic
Option 4: Tetra-atomic
Question : With symbols having their usual meanings, which one among the following is used as the standard for defining atomic mass units?
Option 1: C-12
Option 2: H-1
Option 3: O-8
Option 4: N-14
Question : "mho" is the unit of ________of a substance.
Option 1: resistance
Option 2: resistivity
Option 3: conductance
Option 4: conductivity
Question : What is the Atomic Number of the element Einsteinium?
Option 1: 98
Option 2: 101
Option 3: 99
Option 4: 100
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