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WorksheetsUntitled Quiz
Total questions: 15
Worksheet time: 8mins
Who synthesized an organic compound urea from an inorganic compound ammonium cyanate?
Einstein
Wohler
Bohr
Rutherford
What is the main element in all organic compounds?
Carbon
Hydrogen
Oxygen
Nitrogen
What is the Latin word from which the name 'carbon' is derived?
Ignis
Aqua
Terra
Carbo
In what form is carbon found in nature?
Liquid
Gas
Solid
Plasma
What is the proportion of carbon in the form of carbon dioxide in the atmosphere?
0.03%
0.07%
0.01%
0.05%
What are some examples of fossil fuels containing carbon?
Sodium, Potassium, Magnesium
Coal, Petroleum, Natural Gas
Iron, Copper, Zinc
Hydrogen, Oxygen, Nitrogen
Which of the following are carbonaceous nutrients?
Acids, Bases, Salts
Sugar, Salt, Water
Vitamins, Minerals, Fiber
Carbohydrates, Proteins, Fats
In what form is carbon found in natural fibres?
Cellulose
Protein
Lipid
Nucleic Acid
What do some types of plants on the ocean floor convert carbon in marine water into?
Calcium Carbonate
Sodium Chloride
Magnesium Sulfate
Potassium Nitrate
What is the property of elements where some occur in more than one form?
Monomorphism
Polymorphism
Allotropy
Isotropy
What are the physical properties of crystalline forms of carbon?
Low melting points and boiling points
Amorphous structure
Irregular shape and surface
High melting points and boiling points
Where are diamonds mainly found in India?
Panna (Madhya Pradesh)
None of the above
Govalkonda (Karnatak)
Both A and B
In which country are diamonds also found, apart from India?
All of the above
Brazil
South Africa
Belgium
What is the term used for elements that occur in more than one form?
Monomorphism
Isomerism
Allotropy
Polymorphism
How many crystalline allotropes does carbon have?
One
Three
Four
Two
