Chemistry Basic Concepts Quiz Online

Chemistry basic and fundamentals concepts are essential to learning for every level in chemistry courses. Here, we have compiled many chemistry fundamental concepts quizes free for students of grades 11 and 12. We hope you will find this very useful for your regular exam preparations and entry tests at undergraduate levels, particularly for medical and engineering students (MDCAT, ECAT, NUST, NUMS, JEE, NEET).
Before taking this quiz, you can revise your fundamental concepts in chemistry by using the following of our free resources.

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INSTRUCTIONS:

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2. Once you select one option, the system will not allow you to change.
3. After your selection, the system will automatically let you know about your answer right or wrong.
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Results

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#1. Percentage of Oxygen in H2O Is:

80%

80%

8.8%

8.8%

9.8%

9.8%

88.8%

88.8%

#2. More Abundant Isotope of an Element Is One With:

Even Mass No.

Even Mass No.

Odd Atomic No.

Odd Atomic No.

Even Atomic No.

Even Atomic No.

Odd Mass No.

Odd Mass No.

#3. Large No. Of Isotopes Are Known For the Elements Whose Masses Are Multiple Of:

Six

Six

Four

Four

Two

Two

Eight

Eight

#4. A Sample of Pure Matter Is:

Compound

Compound

Mixture

Mixture

Element

Element

Substance

Substance

#5. Nm Stands For:

None of The Above

None of The Above

Nanometer

Nanometer

Newton Square Meter

Newton Square Meter

Newton Meter

Newton Meter

#6. One Calorie Is Equal To:

41.84 J

41.84 J

4.184 J

4.184 J

0.04184 J

0.04184 J

0.4184 J

0.4184 J

#7. The Mass of One Mole of Electron Is:

0.55 Mg

0.55 Mg

1.008 Mg

1.008 Mg

1.673 Mg

1.673 Mg

0.184 Mg

0.184 Mg

#8. Isotopes Differ In:

Properties Which Depend On Mass

Properties Which Depend On Mass

Arrangements of Electrons in Orbital

Arrangements of Electrons in Orbital

Chemical Properties

Chemical Properties

The Extent to Which They May Be Affected In Electromagnetic Field

The Extent to Which They May Be Affected In Electromagnetic Field

#9. Many Elements Have Fractional Atomic Mass. This Is Because:

Atomic Masses Are Averages Masses of Isotopes

Atomic Masses Are Averages Masses of Isotopes

The Mass Atom Is Itself Fractional

The Mass Atom Is Itself Fractional

Atomic Masses Are Average Masses of Isotopes Proportional to Relative Abundance

Atomic Masses Are Average Masses of Isotopes Proportional to Relative Abundance

Atomic Masses Are Average Masses of Isobars

Atomic Masses Are Average Masses of Isobars

#10. A Molecule Having Two Atoms Is Called:

Polyatomic Molecules

Polyatomic Molecules

Monoatomic Molecules

Monoatomic Molecules

Diatomic Molecules

Diatomic Molecules

Homo atomic Molecule

Homo atomic Molecule

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