ΤΕΣΤ ΧΗΜΕΙΑΣ

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ΤΕΣΤ ΧΗΜΕΙΑΣ

Παράδειγμα εισαγωγικού τεστ για τα Ιατρικά Πανεπιστήμια της Βουλγαρίας

Which of the following is the weakest acid?

sulfuric acid

carbonic acid

hydrochloric acid

nitric acid

Clear selection

The aqueous solution of glycerol:

freezes at a higher temperature than that of water

boils at the same temperature as that of water

boils at a lower temperature than that of water

freezes at a lower temperature than that of water

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An aqueous solution of the organic compound dimethylamine has a pH > 7. Which statement about dimethylamine is correct?

it neutralizes an aqueous solution of sodium hydroxide

it reacts with copper (II) carbonate to give carbon dioxide

it turns blue litmus red

it reacts with hydrochloric acid to form a salt

Clear selection

Which dissociation process is not presented correctly?

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Which of the reactions below represents an oxidation-reduction reaction?

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The most electronegative element among the following is:

sodium

bromine

oxygen

fluorine

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The metal that does not give H2 on treatment with dilute HCl is:

Clear selection

Which compound contains no ionic character?

NaOH

SO3

Na2SO4

CaO

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The molecule of ethene CH2=CH2 has:

four σ -bonds and one π -bond

two σ -bonds and three π -bonds

one σ-bond and four π-bonds

five σ -bonds and one π -bond

Clear selection

Which chemical reaction is impossible?

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...

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