Оrganic chemistry
Оrganic chemistry
Питань: 20
20:00
Питання 1 з 20
Питання 1
What is the position in the quinoline molecule, at which nucleophilic substitution reactions would occur?
Питання 2
What compound can be synthesized from bromobenzene and bromomethane using the Wurtz-Fittig reaction?
Питання 3
Select pyridine among the listed compounds.
Питання 4
Which one of the listed heterocycles is a condensed heterocycle?
Питання 5
What type of tautomerism is characteristic of five-membered heterocyclic compounds with two nitrogen heteroatoms?
Питання 6
What is the mechanism of Br₂ attaching to propene?
Питання 7
What solution can be used to distinguish formic acid from acetic acid?
Питання 8
How are salts and esters of oxalic acid called?
Питання 9
What is the name of the reactions in which the cycle of elementary steps that involve active particles is repeated many times?
Питання 10
Nicotinamide (vitamin PP) is a derivative of a certain nitrogen-containing heterocycle. Name this heterocycle.
Питання 11
Primary and secondary nitroalkanes are tautomeric compounds. What tautomerism is characteristic of them?
Питання 12
Specify the substance that results from the following reaction:
Питання 13
What type of bonds participates in creation of both linear and cyclic carboxylic acid associates in the form of dimers?
Питання 14
Sulfurization of benzene, as well as other aromatic hydrocarbons, is one of the most important reactions in organic chemistry,
since its products are widely used in industry. Which of the following are the possible products of benzene sulfation reaction?
Питання 15
Patients with gout have an increased concentration of acid, the chemical formula of which is presented below, in the blood.
Also, increased level of this acid promotes the formation of stones in the kidneys and leads to a number of pathological medical
conditions. What substance is the precursor to the described acid?
Питання 16
In practical classes the group of students have to explore the chemical structure of glucose molecule. Which of the following
suits most for simultaneous detection of aldehyde group and glycol fragment in previously mentioned molecule?
Питання 17
What drug is produced as the result of reaction between salicylic acid and acetic anhydride?
Питання 18
What reagent is used in the reaction given below?
Питання 19
A laboratory received ethanol and methanol. What reaction can be used to distinguish between these two substances?
Питання 20
Select ketose from the monosaccharides listed below: