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CHEMISTRY QUESTIONS SET
PART: ORGANIC CHEMISTRY
Teacher: PHAM NGOC SON
I. GENERAL OF ORGANIC CHEMISTRY
first. Organic compounds are compounds of carbon
A. with hydrogen.
B. with oxygen.
C. with hydrogen, oxygen and many other elements.
D. minus CO, CO2salt carbonate, cyanide, …
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2. According to elemental composition, organic compounds are divided into
A. hydrocarbons and non-hydrocarbon substances.
B. hydrocarbons and oxygen-containing compounds.
C. hydrocarbons and their derivatives.
D. hydrocarbons and compounds with functional groups.
3. In the molecular composition of organic matter, it is necessary to have
A. the element carbon and hydrogen.
B. the element carbon.
C. the elements carbon, hydrogen and oxygen.
D. elemental carbon and nitrogen.
4. What do organic substances have in common?
A. Well soluble in water.
B. Heat resistant.
C. High reactivity.
D. Volatile.
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5. Chemical bonds in organic molecules
A. mainly covalent bonds.
B. mainly ionic bonding.
C. mainly links for receivers.
D. contains only covalent bonds.
6. What organic substances have in common is
A. molecules always have carbon, hydrogen and oxygen.
B. high melting point.
C. High reactivity.
D. the molecule always has carbon.
7. Chemical reactions of common organic substances
A. occurs rapidly and produces product mixtures.
B. occurs slowly and produces a single product.
C. occurs slowly and produces mixtures of products.
D. occurs slowly and produces mixtures of isomer products.
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8. What organic substances have in common is
A. molecules always have carbon, hydrogen and oxygen.
B. high melting point.
C. the ability to react slowly and not in a definite direction.
D. the molecule always has carbon, nitrogen and hydrogen.
9. Which of the following groups of substances are derivatives of hydrocarbons?
A. ONLY2Cl2ONLY2Br-ONLY2Br, NaCl, ONLY3Br, ONLY3ONLY2Br.
B. ONLY2Cl2ONLY2Br-ONLY2Br, ONLY2=CHCOOH, ONLY3Br, ONLY3ONLY2OH.
C. FeCl2, CH2Br-CH2Br, CH2=CHCl, CH3Br, CH3CH2Br.
D. Hg2Cl2ONLY2Br-ONLY2Br, ONLY2=CHCl, Na2SO4ONLY3ONLY2Br.
ten. The purpose of qualitative analysis is
A. find the molecular formula of the organic substance.
B. find the simplest formula of organic matter.
C. determination of the molecular mass of organic matter.
D. identify elements in organic matter molecules.
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11. The purpose of quantitative analysis is
A. find the molecular formula of the organic substance.
B. determine the mass percent composition of the elements in the organic matter molecule.
C. determination of the molecular mass of organic matter.
D. identify elements in organic matter molecules.
twelfth. The simplest formula says
A. the atomic number of the elements in the molecule.
B. the minimal ratio of the number of atoms of the elements in the molecule.
C. molecular mass of organic matter.
D. the order of bonds between atoms in a molecule.
13. The molecular formula says
A. the atomic number of the elements in the molecule.
B. the minimal ratio of the number of atoms of the elements in the molecule.
C. Molecular Mass of organic matter.
D. the order of bonds between atoms in a molecule.
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14. When organic matter X is burned with oxygen in the air, a mixture of gases and vapors including CO . is obtained2H2O, FEMALE2. It proves:
A. The molecule of substance X must have elements C, H, O, and N.
B. The molecule of substance X must have elements C, H, possibly O and N elements.
C. The molecule of substance X has only elements C and H.
D. The molecule of substance X must have elements C, H, and O.
15. The following conclusions correct?
A. Substances with the same simple formula will have the same molecular formula.
B. Many different substances have the same simplest formula.
C. Different substances may have the same simplest formula but will have different molecular formulas.
D. The isomers of each other will have different simplest formulas.
16. Two substances ONLY3COOH and HCOOCH3 different about
A. molecular formula. B. structural formula.
C. type of chemical bond. D. the number of hydrogen atoms.
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17. Two substances ONLY3COOH and HCOOCH3 the same about
A. molecular formula. B. structural formula.
C. type of functional group. D. carbon chain.
18. Two substances ONLY3COOH and ONLY2=CHON2COOH is the same about
A. molecular formula. B. structural formula.
C. type of chemical bond. D. type of functional group.
19. Two substances ONLY3COOH and ONLY3ONLY2ONLY2COOH differs in
A. molecular formula. B. type of functional group.
C. type of chemical bond. D. carbon chain type.
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20. In organic molecules, carbon atoms can bond together to form chains
A. straight branched, straight unbranched or looped.
B. Open (branched, branched) or looped.
C. straight or circular circuit.
D. a loop or a branched circuit.
21. Homogeneity is the phenomenon of substances
A. There are different molecular formulas for some groups ONLY2but have similar chemical properties because they have the same chemical structure.
B. Have the same molecular formula and similar chemical properties because they have the same chemical structure.
C. Has different molecular formula for some groups ONLY2have different chemical properties even though they have the same chemical structure.
D. has different molecular formula for some groups ONLY2but have similar chemical properties even though they have different chemical structures.
22. Substances ONLY3COOH and ONLY3ONLY2ONLY2COOH is
A. isomers of each other. B. peer of each other.
C. similarity of each other. D. isomorphic of each other.
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23. Isomerism is the phenomenon of different compounds
A. has different molecular formula but same properties.
B. has the same molecular formula.
C. has different structural formula, has the same properties.
D. has different molecular formula and different structural formula.
24. Substances ONLY3CH(ONLY3)COOH and ONLY3ONLY2ONLY2COOH is
A. isomers of each other’s functional groups.
B. peer of each other.
C. similarity of each other.
D. isomers with the same function, different carbon chains.
…….
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II. HIDROCACBOON
ANKAN
first. Alkanes are hydrocarbons in molecules with
A. single bond CC open circuit and CH.
B. single link CC open circuit or loop.
C. carbon-carbon double bond.
D. carbon-carbon triple bond.
2. Saturated hydrocarbons are hydrocarbons
A. in a molecule there are only single bonds.
B. in the molecule there is only one double bond.
C. in the molecule there is a satiety ring.
D. in the molecule there is at least one double bond.
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3. Alkanes are hydrocarbons with the molecular formula .
A. OLDnH2n. B. OLDnH2n+2.
C. OLDnH2n-2. D. OLDnH2n-6.
4. Alkanes have structural isomers
A. branched carbon chain and branched carbon chain.
B. loop and non-loop circuits.
C. differ in double bond positions.
D. loop and open circuit.
5. The mass percent of carbon in the molecule of alkane Y is 83.33%. The molecular formula of Y is
A. OLD2H6. B. OLD3H8 . C. OLD4Hten. D. OLD5Htwelfth.
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6. The mass percent of carbon in the molecule of alkane Y is 82.76%. The molecular formula of Y is
A. OLD2H6. B. OLD3H8 . C. OLD4Hten. D. OLD5Htwelfth.
7. As the number of carbon atoms in the molecule increases, the mass percent of carbon in the alkanes
A. unchanged. B. descending.
C. ascending. D. irregular variation.
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