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

Question 1 of 15

Question 2 of 15

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

Question 2 of 15

Question 3 of 15

3. 1 gram formula refers to:
A.
B.
C.
D.

Question 3 of 15

Question 4 of 15

4. The largest number of moles are present in:
A.
B.
C.
D.

Question 4 of 15

Question 5 of 15

5. How many electrons have to be removed to ionize 1.0 x 10-6 mol of Ne atoms to Ne+ ions in a neon advertising tube?
A.
B.
C.
D.

Question 5 of 15

Question 6 of 15

6. Which of the following compounds has the highest % age of oxygen by weight?
A.
B.
C.
D.

Question 6 of 15

Question 7 of 15

7. 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 7 of 15

Question 8 of 15

8. Which of the following contains 1 mole of the stated particle
A.
B.
C.
D.

Question 8 of 15

Question 9 of 15

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

Question 9 of 15

Question 10 of 15

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

Question 10 of 15

Question 11 of 15

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

Question 11 of 15

Question 12 of 15

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

Question 12 of 15

Question 13 of 15

13. Mg reacts with HCl as per the following reactions:
Mg(s) + 2HCl(aq) → MgCl2(aq) + H2(g)Given that; Mg = 21g and HCl = 21g, the excess reactant is;
A.
B.
C.
D.

Question 13 of 15

Question 14 of 15

14. Which one is mono isotopic element?
A.
B.
C.
D.

Question 14 of 15

Question 15 of 15

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

Question 15 of 15


 

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