2 0 2 4 /2025 | © copyright | This work may not be copied for profit gain Excel!
Plovdiv entrance test Questions and
Answers 2024/2025
The mass number and atomic number of the lithium atom are shown by the symbol 3 7 Li.
What is the correct symbol for the lithium-ion in lithium chloride?
A) 2 6 Li-
B) 3 6 Li+
C) 3 7 Li+
D) 3 7 Li-
C) 3 7 Li+
All of the following can act as Brønsted-Lowry acid (proton donors) in aqueous solution except:
A) HI
B) HCO3 -
C) H2S
D) NH3
D) NH3
All of the following statements about carbon dioxide are true except:
A) it can be prepared by the action of acid on limestone
B) it is used to extinguish fires
C) it dissolves in water at room temperature
D) it sublimes rather than melts at 20°C and 1 atmosphere pressure
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D
Which of the options will form the major product ?
- primary carbocation
- secondary carbocation
- tertiary carbocation
- TERTIARY CARBOCATION BECAUSE IT IS MORE STABLE
True or false , alcohols do not react with NaOH ?
true , they do not react with NaOH and thus no salt is formed
Which of the reaction shown below involves the formation of an ionic precipitate from a
solution?
A) Ca2+ + CO3 CaCO3
B) HCO3 - + H+ H2CO3
C) Fe + Cu2+ Fe2+ + Cu
D) CaCO3 + H2CO3 Ca(HCO3)2
A ; because a precipitate is formed when a cation and an anion react.
Given the following process that has reached equilibrium: NaCl (s)-><- NaCl (aq). For the
phase equilibrium to exist, the NaCl (aq) must be a solution that is:
A) concentrated
B) saturated
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C) supersaturated
D) unsaturated
B ; Since only a saturated solution would mean that there is a balance in
concentrations in the system
Glucose and fructose are:
A) enantiomers
B) functional isomers
C) tautomers
D) chain isomer
Functional Isomers
Which of the following is an observable property of many acids?
A) they become slippery when reacting with water
B) they react with metals to release hydrogen gas
C) they produce salts when mixed with other acids
D) they become more acidic when mixed with a base
B
All of the native α-amino acids can react with the reagents below except:
A) NaOH
B) FeCl3
C) HCl
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Plovdiv entrance test Questions and
Answers 2024/2025
The mass number and atomic number of the lithium atom are shown by the symbol 3 7 Li.
What is the correct symbol for the lithium-ion in lithium chloride?
A) 2 6 Li-
B) 3 6 Li+
C) 3 7 Li+
D) 3 7 Li-
C) 3 7 Li+
All of the following can act as Brønsted-Lowry acid (proton donors) in aqueous solution except:
A) HI
B) HCO3 -
C) H2S
D) NH3
D) NH3
All of the following statements about carbon dioxide are true except:
A) it can be prepared by the action of acid on limestone
B) it is used to extinguish fires
C) it dissolves in water at room temperature
D) it sublimes rather than melts at 20°C and 1 atmosphere pressure
1|Page| GradeA+ | 2 0 0 2 5
,2 0 2 4 /2025 | © copyright | This work may not be copied for profit gain Excel!
D
Which of the options will form the major product ?
- primary carbocation
- secondary carbocation
- tertiary carbocation
- TERTIARY CARBOCATION BECAUSE IT IS MORE STABLE
True or false , alcohols do not react with NaOH ?
true , they do not react with NaOH and thus no salt is formed
Which of the reaction shown below involves the formation of an ionic precipitate from a
solution?
A) Ca2+ + CO3 CaCO3
B) HCO3 - + H+ H2CO3
C) Fe + Cu2+ Fe2+ + Cu
D) CaCO3 + H2CO3 Ca(HCO3)2
A ; because a precipitate is formed when a cation and an anion react.
Given the following process that has reached equilibrium: NaCl (s)-><- NaCl (aq). For the
phase equilibrium to exist, the NaCl (aq) must be a solution that is:
A) concentrated
B) saturated
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, 2 0 2 4 /2025 | © copyright | This work may not be copied for profit gain Excel!
C) supersaturated
D) unsaturated
B ; Since only a saturated solution would mean that there is a balance in
concentrations in the system
Glucose and fructose are:
A) enantiomers
B) functional isomers
C) tautomers
D) chain isomer
Functional Isomers
Which of the following is an observable property of many acids?
A) they become slippery when reacting with water
B) they react with metals to release hydrogen gas
C) they produce salts when mixed with other acids
D) they become more acidic when mixed with a base
B
All of the native α-amino acids can react with the reagents below except:
A) NaOH
B) FeCl3
C) HCl
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