Chemistry Fundamental Concepts Test Online Mcqs Preparation

Chemistry Fundamental Concepts Test Online Mcqs Preparation With Answers Start Below

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Question 1 of 15

1. One mole of potassium chlorate is thermally decomposed and excess of aluminum is burnt in gaseous mixture. How many moles of aluminum oxide are formed? Respective equations are given as
2KClO3  → KCl + 3O2                  4Al + 3O2  → 2Al2O3
A.
B.
C.
D.

Question 1 of 15

Question 2 of 15

2. One mole of SO2 contains:
A.
B.
C.
D.

Question 2 of 15

Question 3 of 15

3. The height of the peak in mass spectrum shows
A.
B.
C.
D.

Question 3 of 15

Question 4 of 15

4. In a mass spectrometer, increasing the electric field with constant magnetic field results in
A.
B.
C.
D.

Question 4 of 15

Question 5 of 15

5. The separation of different isotopes in the mass spectrometer is done on the basis of:
A.
B.
C.
D.

Question 5 of 15

Question 6 of 15

6. Number of H+ ions when 0.1 mole of sulfuric acid is completely ionized in water:
A.
B.
C.
D.

Question 6 of 15

Question 7 of 15

7. Combustion analysis is performed for the determination of
A.
B.
C.
D.

Question 7 of 15

Question 8 of 15

8. Which of the following not has equal number of atoms as that in 6g Molybdenum (Ar : 96)
A.
B.
C.
D.

Question 8 of 15

Question 9 of 15

9. Number of moles present in 0.6 grams of silica is (Atomic mass Si = 28, O = 16)
A.
B.
C.
D.

Question 9 of 15

Question 10 of 15

10. Gram atoms of hydrogen in 5.5g H2
A.
B.
C.
D.

Question 10 of 15

Question 11 of 15

11. A smuggler was caught by Airport police and 24 g of diamond was recovered from him. How many atoms of carbon he was carrying
A.
B.
C.
D.

Question 11 of 15

Question 12 of 15

12. During combustion analysis, which one is used for absorbing carbon dioxide
A.
B.
C.
D.

Question 12 of 15

Question 13 of 15

13. In a mass spectrometer, increasing the magnetic field strength with constant electric field result in
A.
B.
C.
D.

Question 13 of 15

Question 14 of 15

14. A compound contains 50% sulphur and 50% oxygen by mass. The empirical formula of the compound is:
A.
B.
C.
D.

Question 14 of 15

Question 15 of 15

15. The stoichiometric calculations for a chemical reaction results in:
A.
B.
C.
D.

Question 15 of 15


 

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