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Class 11 Chemistry: Chemistry Basic Concepts
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MCQs on chemistry importance, matter nature, properties and their measurements, chemical combination laws, daltons atomic theory, atomic and molecular masses, mole basics, molar masses, percentage composition, stoichiometry and stoichiometric calculations.

Class 11 Chemistry: Chemistry Basic Concepts
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25 Questions

1. 1 mole of ammonia is of 17 g. Then what is the mass of 0.3 moles of ammonia?
2. What’s the number of entities or particles together in mole concept known as?
3. The paintings on the walls of Ajanta and Ellora cave were based on ________
4. A and B are two solutions that are mixed. Calculate the resultant solution's molarity.Initial Solutions"Molarity"Volume"A"1.3"100ml"B"0.8"500ml"
5. What does the Elixir of life of do?
6. Who proposed the Law of Definite Composition?
7. What is 1 Dalton?
8. Multiply 1.2 and 3.91. Obtain the result as per the rules of significant figures.
9. What are the basic constituents of matter?
10. A sample of carbon that contains 70% carbon-12 and 30% carbon-14. What do you think is the average atomic mass of this sample?
11. Nowadays, “amu” is replaced by ____
12. Calculate the average atomic mass of nitrogen present in the atmosphere?"""""""""
13. A ________ is made up of two or more pure substances which may be in any ratio.
14. _________ is referred to as the closeness of different measurements for the same quantity.
15. What did Dalton’s Theory couldn’t explain?
16. A solution contains 8 moles of solute and the mass of the solution is 4 kg. What's the molality of this solution?
17. The substances whose compositions are not uniform and different components are mixed are called _______
18. Which of the following is true regarding molecular formula?
19. Philosophy of changing substances into another form is called as _______
20. The observation of __________ properties needs a chemical change to occur.
21. Calculate the mass percent of magnesium in the formation of magnesium oxide.
22. Convert 40°C to °F.
23. What is the difference in units between Kelvin and centigrade scales of temperature?
24. ______ is the sum of atomic masses of the elements present in a molecule.
25. If one mole of ammonia contains “y” number of particles, then how many particles do 1 mole of glucose contain?

 
ISOTOPEABUNDANCEATOMIC MASS14N99.69%14.0031 amu15N0.39%15.0001 amu