Free online quizzes

Chemistry, physics, biology online quizzes for school college students competitive examination Free online quizzes or multiple choice question answer (MCQ) published on learning chemistry help to test the knowledge of chemistry and biological chemistry for school college students who prepared for different types of competitive examinations. The multiple choice question answer (MCQ) has divided into two sections like chemistry and biological chemistry.

Chemistry Quiz Questions


Among the following, the species with identical chemical bond order

The role of hemoglobin is to

The paper soaked in salt X turns brown when exposed to HNO3 vapor, the salt X is

The formal oxidation number of Cr and Cl in the ions Cr2O7-2 and ClO3- are

The hybridization of xenon atom in XeF4

The correct order of energy of 2S orbitals in H, Li, Na and K

A container of volume 2.24 lit can stand with a maximum pressure of 2 atm at 298K before exploding. The maximum amount of nitrogen that can be safely put to the container at this temperature closet to

Among the following, the correct statement

The solubility of BasO4 in pure water is closest to
[Given KSP = 1.0 × 10-10 at 250C and molecular weight = 233 gm mol-1]

Among the following, the correct statement is

The number of water molecules in 250 ml of water solution closest to
[Given the density of water 1.0 gm ml-1; Avogadro number = 6.023 × 1023]

Your score is

The average score is 28%



Biochemistry Quiz Questions


Biology Quiz 1, the online Quiz set contains 10 multiple choice questions (MCQ) related to different topics of biological chemistry to grow the knowledge of the said topics for different types of school college competitive exams. There are four options given for each biology MCQ question, out of four only one is correct.

1 / 10

Glycoproteins are formed in which one of the following organelles?

2 / 10

The first enzyme that the food encounters in the human digestive system

3 / 10

Which one of the human cells lacks a nucleus?

4 / 10

Which of the following statement is true about trypsinogen?

5 / 10

Which one of the following organisms respires through the skin?

6 / 10

Which of the following reactions is catalyzed by high-energy UV radiation in the stratosphere?

7 / 10

Which of the following proteins does not play a role in skeletal muscle construction?

8 / 10

Tendrils are modifications of

9 / 10

Erythropoietin is produced by

10 / 10

Action potential in neurons is generated by a rapid influx of

Your score is

The average score is 39%


Biology Quizzes


Atomic number electron configuration of f block elements Lanthanides in periodic table

f block Elements

f block elements on periodic table f block elements appear in two chemical series like 4f block names as lanthanides or rare earth elements and...


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relation between quantum numbers- for atomic theory questions and answers (quiz)

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Palladium chemical element or metal symbol, properties facts, uses and found in periodic table


What is palladium? Palladium is a chemical element or silvery white, lustrous, malleable, high density metal of group-10 of the periodic table with atomic number...