Allotropy-Multiple Choice Questions Quiz

Question 1: What is allotropy?

(a) The study of marine life
(b) The study of weather patterns
(c) The existence of multiple structural forms of an element in the same physical state
(d) The classification of minerals

Question 2: Which of the following elements exhibits allotropy?

(a) Hydrogen
(b) Oxygen
(c) Helium
(d) Sodium

Question 3: What is the most stable allotrope of carbon?

(a) Graphite
(b) Diamond
(c) Amorphous carbon
(d) Carbon nanotube

Question 4: Which allotrope of phosphorus is a highly reactive, waxy white substance that ignites spontaneously in air?

(a) Red phosphorus
(b) Black phosphorus
(c) White phosphorus
(d) Yellow phosphorus

Question 5: What is the main difference between diamond and graphite, both of which are allotropes of carbon?

(a) Diamond is transparent, while graphite is opaque.
(b) Diamond is a conductor of electricity, while graphite is an insulator.
(c) Diamond has a planar hexagonal lattice structure, while graphite has a tetrahedral lattice structure.
(d) Diamond consists of sp2 hybridized carbon atoms, while graphite consists of sp3 hybridized carbon atoms.

Question 6: What is the most stable form of sulfur at room temperature?

(a) Rhombic sulfur
(b) Monoclinic sulfur
(c) Orthorhombic sulfur
(d) Amorphous sulfur

Question 7: Which allotrope of oxygen is commonly used in ozone layer protection and as a disinfectant?

(a) O2
(b) O4
(c) Ozone (O3)
(d) Oxyenide (O-)

Question 8: Which element has the largest number of known allotropes?

(a) Carbon
(b) Oxygen
(c) Sulfur
(d) Phosphorus

Question 9: Which allotrope of iron is stable at high temperatures and is used in the production of steel?

(a) Ferrite
(b) Austenite
(c) Martensite
(d) Cementite

Question 10: What is the common name for the allotrope of carbon known as 'buckyballs' or 'fullerenes'?

(a) Graphite
(b) Diamond
(c) Carbon nanotube
(d) Buckminsterfullerene (C60)

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Total score: /10

Answer key:

Question 1: c

Question 2: b

Question 3: b

Question 4: c

Question 5: b

Question 6: a

Question 7: c

Question 8: c

Question 9: b

Question 10: d