30 Questions
What is the primary suffix added to the word root when the parent chain contains two or more triple bonds?
yne
What is the functional group indicated by the secondary suffix '-oyl chloride'?
Acid chloride
What is the class of organic compound that includes compounds with the functional group '-OH'?
Alcohols
What is the IUPAC nomenclature system primarily based on?
The number of carbon atoms in the chain
What is the term for the root word that denotes the number of carbon atoms present in the chain?
Word root
What is the primary indicator of a pure organic solid?
A sharp and definite melting point
Which reagent is used to separate a mixture of amines?
Benzenesulphonyl chloride
What is the purpose of determining the mixed melting point in organic chemistry?
To ascertain the purity of a compound
What is the product of heating an organic compound with dry cupric oxide?
CO2 and H2O
What is the purpose of treating pyroligneous acid with milk of lime?
To separate acetic acid from the mixture
What is the functional group characteristic of acid anhydrides?
O || C - O - C
Which of the following is NOT a characteristic of a homologous series?
All members have the same functional group
What is the functional group characteristic of amides?
O || - C - NH 2
What is the functional group characteristic of alkynes?
-C ≡ C -
What is the general formula for the members of the alcohol family?
Cn H 2n + 1OH
What is the purpose of heating a clean copper wire in the Bunsen flame in the Beilstein's test?
To remove impurities from the wire
What is the significance of the orange colouration in the CS2 layer in the special test for bromine and iodine?
It indicates the presence of bromine
What is the reaction that occurs when phosphorus is detected by fusing the organic compound with sodium peroxide?
2 P + 5 Na2O2 → 2 Na3PO4 + 2 Na2O
What is the indication of a white precipitate in the test for sulphur?
The presence of sulphur
What is the purpose of adding chlorine water slowly with constant shaking in the special test for bromine and iodine?
To oxidize the halogens
What is the purpose of adding silver nitrate in the Carius method?
To precipitate the halogen
What is the product formed when an organic compound containing sulphur is heated with fuming nitric acid?
Sulphuric acid
What is the formula used to calculate the percentage of chlorine in an organic compound using the Carius method?
% of Cl = (Mass of AgCl formed / 35.5) x 100 / Mass of substance taken
What is the purpose of adding barium chloride solution in the Carius method?
To precipitate the sulphur as barium sulphate
What is the formula used to calculate the percentage of iodine in an organic compound using the Carius method?
% of I = (Mass of AgI formed / 235) x 100 / Mass of substance taken
What is the colour of the precipitate formed when AgBr reacts with NH3?
White
Which of the following tests is used to detect the presence of nitrogen in an organic compound?
Soda lime test
What is the product formed when sodium thiocyanate reacts with ferric chloride?
Ferric sulphocyanide
What is the purpose of adding barium chloride solution to the fused mass in the oxidation test for sulphur?
To precipitate sodium sulphate
Which of the following reagents is used to detect the presence of halogen in an organic compound?
NaCNS
This quiz covers common names and molecular formulas of various organic compounds, including alkanes, alkynes, and functional groups.
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