MDCAT Fundamental Concepts of Chemistry Online Test

Chemistry Basic Concepts MCQS Online Test

MDCAT Chemistry Basic Concepts Chapter Online Test

Total Questions: 71
Time Allowed: 30 Minutes
Total Marks: 71
How to Attempt Test: Please choose the right Option in MCQ-type question.
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MDCAT Chemistry Basic Concepts Test

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Chemistry

1. Diameter of an atom is in the range of

2. Which one of the following is ambiguous?

3. How many number of ions are there in 98 grams of sulphate ions?

4. Which of the following statements is FALSE for the chemical equation given below in which nitrogen gas reacts with hydrogen gas to form ammonia gas assuming the reaction goes to completion?
N₂ + 3H₂ → 2NH₃

5. Which of the following represents a compound?

6. The modern atomic weight scale is based on

7. Which of the following represents an element?

8. How many moles of KBrO₃ are required to prepare 0.0700 moles of Br₂ according to the reaction: KBrO₃ + 5KBr + 6HNO₃ → 6KNO₃ + 3Br₂ + 3H₂O

9. Calculate the weight, in grams, of one molecule of carbon dioxide, CO₂.

10. The compound having highest percent of oxygen is

11. Balance the following equation using minimum integral coefficients: (NH₃ + O₂ → NO₂ + H₂O) Find the stoichiometric coefficient for oxygen gas O₂:

12. Which of the following statements is wrong about isotopes?

13. How will you separate a mixture of two gases?

14. For which of the following terms empirical formula cannot be applied?

15. The set of numerical coefficients that balances the chemical equation K₂CrO₄ + CH1 → K₂Cr₂O₇ + KC1 + H₂O

16. To differentiate between C-12, C-13 and C-14, the instrument that you would use is

17. A ring contains 1.2g of diamond. How many number of carbon atoms are in diamond?

18. What do you call pure substances that are formed from the attraction between positive ions and negative ions?

19. How do you calculate the number of neutrons in an atom?

20. Most atoms are neutral, to become a positive ion the atom must:

21. How many moles of CO₂ are present in 220 mg?

22. Molecular compounds can be found in all three states of matter at room temperature. Which molecule compound is a liquid at room temperature?

23. Calculate the number of moles of CaCO₃ (Formula weight = 100) in a sample that weighs 25.0 grams.

24. What does the atomic number of an atom represent?

25. Copper (II) oxide is mixed with organic compound during combustion. The purpose is


 

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15 Comments

  1. No bro the right ans is what is in test bcz *n* integer must be multiplied with E F to form MF and when it go towards other side it will be as a denominator of MF.

  2. EMPIRICAL FORMULA/n=molecular formula it’s the correct answer but they concider it as wrong what a LOL..

    1. No bro the right ans is what is in test bcz *n* integer must be multiplied with E F to form MF and when it go towards other side it will be as a denominator of MF.

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