ICSE ICSE Class 8 - CISCE Question Bank Solutions

Explain the reducing action of carbon monoxide.

Write two remedies for carbon monoxide poisoning.

Tick the most appropriate answer.

Each molecule of Buckminster fulierene contains 60 atoms of carbon arranged as balls consisting of 12 pentagons and
a. 20 hexagons
b. 30 hexagons
c. 40 hexagons
d. 50 hexagons

Tick the most appropriate answer.

Carbon has a great affinity for
a. sulphur
b. nitrogen
c. oxygen
d. none of these

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Carbon atom has ................... electrons in its valence shell.

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.................... is the main gaseous compound of carbon.

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..................... is used as a pigment and colouring matter in ink and shoe polish.

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Carbon when heated in limited supply of air forms..................

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Organic compounds have ........ boiling and melting points.

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.................. are the compounds of hydrogen and carbon only.

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Natural gas is an important ............. fuel.

TRUE \ FALSE

Organic compounds are soluble in water.

Carbon forms innumerable compounds by combining with other elements. True or false ?

Most of our food contains compounds of carbon. True or false ?

Name the simplest organic compound.

What are hydrocarbons ? Name the two different forms of hydrocarbons.

Write the name and the chemical formula of the simplest alkene.

Name a gas which, though a compound of carbon, is not studied under organic chemistry.

What is the atomic number of carbon ?

What is the name of the famous diamond that was found in Wajrakarur in Andhra Pradesh ?