Science Practice Quiz 38

Q1.What is a distinct physical property of graphite mentioned in the text?

A. It is the hardest known substance. B. It has a rigid three-dimensional structure. C. It is a very good conductor of electricity. D. It has different chemical properties from diamond.

Q2.How are carbon atoms bonded in a diamond structure?

A. Each carbon atom is bonded to three other carbon atoms in the same plane. B. Each carbon atom is bonded to four other carbon atoms forming a rigid three-dimensional structure. C. Each carbon atom forms a double-bond with another carbon atom. D. Carbon atoms are arranged in hexagonal arrays placed in layers.

Q3.In the structure of graphite, how are carbon atoms arranged?

A. Each carbon atom is bonded to four other carbon atoms in a three-dimensional lattice. B. Carbon atoms are arranged in the shape of a football. C. Each carbon atom is bonded to three other carbon atoms in the same plane, giving a hexagonal array. D. Carbon atoms form a rigid, non-layered structure.

Q4.How can diamonds be synthesised according to the provided text?

A. By heating graphite to extremely high temperatures. B. By subjecting pure carbon to very high pressure and temperature. C. By combining carbon with other non-metals. D. By arranging carbon atoms in a football shape.

Q5.Which was the first fullerene to be identified?

A. C-40 B. C-60 C. C-80 D. C-100

Q6.The molecule fullerene was named after which US architect?

A. Frank Lloyd Wright B. I. M. Pei C. Buckminster Fuller D. Philip Johnson

Q7.Why are covalent compounds generally poor conductors of electricity?

A. They form charged particles when electrons are shared. B. Electrons are not shared between atoms. C. No charged particles are formed as electrons are shared between atoms. D. They have a rigid three-dimensional structure.

Q8.What is a common characteristic shared by diamond and graphite, despite their different physical properties?

A. Both are good conductors of electricity. B. Both are the hardest known substances. C. Both have the same chemical properties. D. Both are smooth and slippery.

Q9.What is the unique ability of carbon to form bonds with other atoms of carbon, giving rise to large molecules, called?

A. Valency B. Isomerism C. Catenation D. Polymerization

Q10.In carbon compounds, what are compounds called if they are linked by only single bonds between the carbon atoms?

A. Unsaturated compounds B. Aromatic compounds C. Saturated compounds D. Cyclic compounds

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Science Practice Quiz 38