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KROK 1 Pharmacy 2012 Questions | KROKEXAM

Browse 2012 KROK 1 Pharmacy exam questions with answers and explanations.

Exam questions

200 Questions
41

The rate of a chemical reaction does not depend on the concentration of the reactants. Specify the order of such reaction:

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42

Sulfonamides are widely used as bacteriostatic agents. The mechanism of antimicrobial action of sulfonamides is based on their structural similarity to:

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43

Specify the reaction conditions (medium, t o) in the standardization of potassium permanganate solution by sodium oxalate solution:

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44

Which of the acids with the same concentration has the highest ionization degree (α)?

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45

Select the correct name for the given compound: {# "img":"lkdw9ytp0tbwwe2pk00jz8n2t.png", "alt":"Option","whb":"134:149:" #}

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46

Acylated amino group acts as a substituent of the following type: {# "img":"be6ciji6mna9m2v9f679znoio.png", "alt":"Option","whb":"258:144:" #}

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47

Halide ions in drugs are determined by titration based upon the reaction of:

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48

In the qualitative analysis which involves precipitation of sulphates of the third analytical group cations (Ca2+, Sr2+, Ba2+) the solubility of sulphates can be reduced by adding:

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49

Lithium carbonate is used in medicine for the prevention and treatment of psychoses of different etiology. Li2CO3 can react with the following compound:

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50

Drugs are commonly analyzed by means of potentiometric pH measurement. Which of the electrodes can be used for measuring the solution pH?

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51

The ability of reagent to ensure a stable analytical effect in the interaction with the analyzed substance is characterized by:

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52

To maintain a certain value of medium-pH the buffer solutions are used. Specify a composition of substances that DOES NOT HAVE buffer properties:

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53

What solution can be determined by photocolorimetric method by self-absorbance?

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54

Uric acid is a derivative of: {# "img":"dcv7fdtx3kgf4nj7412gce5qm.png", "alt":"Option","whb":"151:104:" #}

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55

What class of reactions does this reaction relate? {# "img":"fj107ybt0ezm7s31q1rpj05vb.png", "alt":"Option","whb":"219:59:" #}

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56

While studying a stem covered with periderm, the researcher realized that gas exchange takes place through . . .

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57

Which of the ligands is bidentate?

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58

An expression for the hydrolysis constant {# "img":"v14gmo3137nyrkafknmckspvy.png", "alt":"Option","whb":"190:40:" #} corresponds with the following salt:

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59

The conversion MnO− 4 → MnO2 represents the following reaction:

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60

The high energy from thermal dissoci- ation of CO molecule (the binding energy of 1075 kJ) results from:

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61

The sodium-potassium pump functi- oning in a cell is responsible for the transport of the following ions across the membrane:

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62

In terms of water-air interface, the following substance acts as a surface-active substance:

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63

A patient consulted a doctor about sunburns, decreased visual acuity. His hair, skin and eyes are not pigmented. He has been diagnosed with albinism. The patient presents with the following enzyme defici- ency:

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64

The causative agent of botulism causes severe food poisoning. Specify the most characteristic morphological feature of botulism causative agent:

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65

After the Cannizzaro reaction for benzaldehyde the following compound is obtained: {# "img":"2yev8bnqr0f0n3djhbx3ct9uv.png", "alt":"Option","whb":"146:122:" #}

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66

Specify the reaction, through which salicylic acid can be synthesized:

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67

Fatty degeneration of liver is prevented by lipotropic substances. Which of the following substances relates to them?

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68

Alkaline reaction is typical for the solution of the following salt:

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69

Nitrite ions in presence of nitrate ions can be detected by means of:

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70

Which of the following substances relates to colloidal surface-active substances?

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71

The cause of optical activity is the presence of the following organic compound in the molecular structure:

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72

Given the ability of iodine to dissolve in nonpolar solvents, determine the type of chemical bond in an I2 molecule:

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73

Aqueous solution of CaCl2 with mass concentration 10% is used for intravenous injections. What is the maximum value of isotonic coefficient of CaCl2 in an aqueous solution?

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74

Cryoscopic constants of water, benzene, chloroform, acetic acid and camphor equal to 1,86; 5,12; 4,9; 3,9; 40,0 respectively. Which of these solvents should be selected for the most accurate determination of the molar mass of a drug substance (nonelectrolyte) by the cryoscopic method?

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75

Which of the listed carbonyl compounds gives a positive iodoforme reaction?

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76

Which of these reactions can be used to identify the primary amino group?

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77

For the quantitative analysis of ethanol the gas chromatography was used. Which parameter was measured?

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78

Potassium permanganate reacting with hydrogen peroxide in acidic medium acts as:

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79

Specify the number of electrons involved into formation of the isolated conjugated system in the pyrimidine molecule: {# "img":"ljh5zdkom5uws07ab71dfvfio.png", "alt":"Option","whb":"75:81:" #}

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80

A patient has an increased concentration of hippuric acid in the urine. This acid is the product of benzoic acid detoxification in the liver of. In the human body benzoic acid is formed from the following amino acid:

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