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Basic Chemistry Online Exam Quiz

Important questions about Basic Chemistry. Basic Chemistry MCQ questions with answers. Basic Chemistry exam questions and answers for students and interviews.

'Atom' name was given by


A : a. Democritus

B : b. Bohr

C : c. Rutherford

D : d. Archimedes

Number of unstable isotopes are


A : a. 300

B : b. 50

C : c. 370

D : d. 360

Empirical formula of benzene is similar to


A : a. water

B : b. glycerin

C : c. hydrogen peroxide

D : d. glucose

Relative number of ions in mass spectrometer is plotted as


A : a. shells

B : b. z axis

C : c. abscissa

D : d. ordinate

Isotopes present in nature are


A : a. 270

B : b. 280

C : c. 290

D : d. 300

Relationships which can be studied by stoichiometry are


A : a. 6

B : b. 5

C : c. 4

D : d. 3

A macromolecule found in blood is


A : a. Ferritin

B : b. albumin

C : c. Hemoglobin

D : d. Keratin

Ascorbic acid is another name for vitamin


A : a. A

B : b. B

C : c. C

D : d. D

Ions having positive charges are


A : a. captions

B : b. anions

C : c. molecules

D : d. atoms

Mass of one mole of water molecule is


A : a. 22g

B : b. 28g

C : c. 20g

D : d. 18g

Number of isotopes which oxygen atom has, are


A : a. three

B : b. five

C : c. nine

D : d. two

C?H?O? is empirical formula for vitamin


A : a. C

B : b. A

C : c. B

D : d. D

Moleis defined as mass of an element divided by


A : a. Molar mass

B : b. atomic number

C : c. atomic mass

D : d. empirical formula

Ordinary microscope can measure up to


A : a. 400nm

B : b. 500nm

C : c. 200nm

D : d. 700nm

Molecules expressed by formula unit mass are


A : a. atoms

B : b. neutral gases

C : c. covalent

D : d. ionic

Positive ion formation is


A : a. Exothermic

B : b. Endothermic

C : c. no energy

D : d. neutral

Modern method for separation of isotopes is


A : a. laser separation

B : b. chromatography

C : c. ionization

D : d. X-ray

Formation of negative ion is


A : a. Exothermic

B : b. Endothermic

C : c. energy less

D : d. neutral

In new spectrometers each ion hits a


A : a. Detector

B : b. ionizer

C : c. collector

D : d. graph

Reactant which controls amount of products is


A : a. deficient reactant

B : b. limiting reactant

C : c. excess reactant

D : d. none of these

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