Kuiz Nga Kimia 9
Questions and Answers
- 1.
Në cilin vit kimia organike merret si shkencë?
- A.
1938
- B.
1927
- C.
1928
- D.
1923
Correct Answer
C. 1928Explanation
In 1928, organic chemistry began to be recognized as a science. This was the year when Friedrich Wöhler synthesized urea, which was the first organic compound to be artificially created from inorganic materials. This breakthrough demonstrated that organic compounds could be produced through chemical reactions, challenging the prevailing belief that organic compounds could only be derived from living organisms. This discovery revolutionized the field of chemistry and solidified organic chemistry as a distinct scientific discipline.Rate this question:
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- 2.
Formula e përgjithshme e alkaneve është?
- A.
R-H
- B.
R-X
- C.
R-O-R
- D.
R-OH
Correct Answer
A. R-HExplanation
The general formula for alkanes is R-H. Alkanes are hydrocarbons that consist of only carbon and hydrogen atoms. In the general formula, R represents any alkyl group, which is a group of carbon and hydrogen atoms attached to a larger molecule. The -H represents a hydrogen atom bonded to one of the carbon atoms in the alkyl group. This formula applies to all alkanes, regardless of their specific structure or number of carbon atoms.Rate this question:
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- 3.
Formula molekulare tregon llojin e molekulave dhe numrin e tyre në një atom.
- A.
Saktë
- B.
Gabim
Correct Answer
B. Gabim -
- 4.
Alkenet ndryshe i quajmë olefinat
- A.
Saktë
- B.
Gabim
Correct Answer
A. SaktëExplanation
The given statement is correct. Alkenes are also known as olefins.Rate this question:
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- 5.
Sipas mënyrës sistematike alkinet kanë prapashtesën:
- A.
An
- B.
Un
- C.
In
- D.
Il
Correct Answer
C. InExplanation
The correct answer is "in" because the systematic way of naming alkynes involves adding the suffix "-in" to the name of the corresponding alkane. Alkynes are hydrocarbons that contain a triple bond between carbon atoms. By adding the suffix "-in," it indicates that the compound is an alkyne.Rate this question:
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- 6.
Benzeni dhe derivatet e tij bëjnë pjesë në hidrokarburet:
- A.
Alifatike
- B.
Alkilike
- C.
Aromatike
- D.
të ngopura
Correct Answer
C. AromatikeExplanation
Benzeni dhe derivatet e tij bëjnë pjesë në hidrokarburet aromatike. Hidrokarburet aromatike janë një grup i hidrokarbureve që përmbajnë një ose më shumë unaza benzenike. Benzeni është hidrokarburi aromatik më i thjeshtë dhe ka një strukturë ringe me 6 atome karboni të lidhur në një formë heksagonale. Derivatet e benzenit janë molekulat që kanë grupet funksionale të lidhura me benzenin.Rate this question:
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- 7.
Antraciti përmbanë 85-91% karbon
- A.
Saktë
- B.
Gabim
Correct Answer
B. GabimExplanation
The given statement says that anthracite contains 85-91% carbon. This is incorrect because anthracite is a type of coal that contains a high percentage of carbon, typically ranging from 92-98%. Therefore, the correct answer is "Gabim" (Wrong).Rate this question:
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- 8.
Përfaqësuesit më të thjeshtë të alkooleve janë:
Correct Answer
metanoli,etanoli,etandioli dhe propan trioli-1,2,3Explanation
The correct answer is metanoli, etanoli, etandioli, and propan trioli-1,2,3. These are all simple alcohols, with different numbers of carbon atoms and hydroxyl groups attached. Metanol has one carbon atom and one hydroxyl group, etanol has two carbon atoms and one hydroxyl group, etandiol has two carbon atoms and two hydroxyl groups, and propan trioli-1,2,3 has three carbon atoms and three hydroxyl groups.Rate this question:
- 9.
Acidet njëkarboksilike shpeshherë quhen acide organike.
- A.
Saktë
- B.
Gabim
Correct Answer
B. Gabim -
- 10.
Acidet që bëjnë pjesë në yndyrat e vajrat është
- A.
Acidi oleik
- B.
Acidi oksalik
- C.
Acidi stearik
- D.
Acidi acetik
Correct Answer(s)
A. Acidi oleik
C. Acidi stearikExplanation
The correct answer is Acidi oleik and Acidi stearik because both of these acids are found in fats and oils. They are commonly used in the production of soaps, cosmetics, and various other products. Acidi oleik is a monounsaturated fatty acid, while Acidi stearik is a saturated fatty acid.Rate this question:
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- 11.
Glukoza është sheqeri i cilës bimë dhe formula është
- A.
Dredhëza C6 H12 O6
- B.
Limoni C6 H12 O6
- C.
Rrushi C6 H12 O6
- D.
Molla C6 H12 O6
Correct Answer
C. Rrushi C6 H12 O6Explanation
The correct answer is Rrushi C6 H12 O6 because the formula C6 H12 O6 represents glucose, which is a type of sugar found in fruits. Rrushi (grape) is a fruit that contains glucose, so it is the correct answer.Rate this question:
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