Pytje Nga Lenda E Kimis
- 1.
Sa lidhje Mund ti kete karboni ?
- A.
1 Lidhje
- B.
2 Lidhje
- C.
3 Lidhje
- D.
4 Lidhje
Correct Answer
D. 4 LidhjeExplanation
The correct answer is 4 Lidhje. In chemistry, carbon can form up to four covalent bonds with other atoms. This is because carbon has four valence electrons, allowing it to share electrons and form multiple bonds. Therefore, it is possible for carbon to have four bonds, which is represented by the answer choice "4 Lidhje".Rate this question:
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- 2.
Qka është eteni?
- A.
Alkan
- B.
Alkin
- C.
Alken
- D.
Alkool
Correct Answer
C. AlkenExplanation
The correct answer is "Alken." Alken is a type of hydrocarbon that contains a carbon-carbon double bond. It is characterized by the general formula CnH2n, where n represents the number of carbon atoms in the molecule. Alkenes are unsaturated hydrocarbons and are commonly used in the production of plastics, solvents, and other chemical compounds.Rate this question:
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- 3.
Kush është pjestari themelor i alkaneve?
- A.
Metani
- B.
Etani
- C.
Meteni
- D.
Metini
Correct Answer
A. MetaniExplanation
Metani është pjestari themelor i alkaneve sepse është molekulë e parë dhe më e thjeshtë e serisë së alkaneve. Alkanet janë hidrokarbure të thjeshta që përbëhen vetëm nga atome të karbonit dhe hidrogjenit. Metani ka formula kimike CH4 dhe është molekulë e parë e serisë së alkaneve, ku karboni ka vetëm një atom hidrogjeni të lidhur me veten.Rate this question:
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- 4.
Qka do të thot "hem"?
- A.
Kimi
- B.
Elemente
- C.
Egjipt
- D.
Tokë e zezë
Correct Answer
D. Tokë e zezëExplanation
The correct answer "Tokë e zezë" translates to "black land" in English. This term is commonly used to refer to the fertile black soil found along the Nile River in Egypt.Rate this question:
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- 5.
Kush e rregulloi sistemin periodik?
- A.
Berceliusi
- B.
Watti
- C.
Volta
- D.
Markvolta
Correct Answer
A. BerceliusiExplanation
Berceliusi is the correct answer because he was the first person to arrange the elements in a systematic way, creating the first version of the periodic table. He organized the elements based on their atomic weights, grouping together elements with similar properties. This arrangement laid the foundation for the modern periodic table that we use today.Rate this question:
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- 6.
Glukoza dhe Fruktoza jane :
- A.
Polisakaride
- B.
Oligosakaride
- C.
Disakaride
- D.
Monosakaride
Correct Answer
D. MonosakarideExplanation
Glukoza dhe Fruktoza janë monosakaride. Monosakaridet janë karbohidratet më të thjeshta, të cilat nuk mund të ndahen në molekula më të vogla. Të dyja glukoza dhe fruktoza janë monosakaride të ndryshme, të cilat gjenden natyrisht në ushqime të ndryshme. Glukoza është forma e zakonshme e sheqerit dhe është burimi kryesor i energjisë për organizmin. Fruktoza gjendet kryesisht në fruta dhe është një lloj sheqeri natyral. Kjo përgjigje është e saktë sepse glukoza dhe fruktoza janë monosakaride, jo polisakaride, oligosakaride ose disakaride.Rate this question:
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- 7.
Cila nga këto është formula e alkineve?
- A.
CnH2n+2
- B.
CnH2n
- C.
CnH2n-2
- D.
Asnje
Correct Answer
C. CnH2n-2Explanation
The correct answer is CnH2n-2. This formula represents the general formula for alkynes, which are hydrocarbons with triple bonds between carbon atoms. The formula CnH2n-2 indicates that for every carbon atom in the molecule, there are two hydrogen atoms less than twice the number of carbon atoms. This formula accurately represents the composition of alkynes and distinguishes them from alkanes (CnH2n+2) and alkenes (CnH2n).Rate this question:
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- 8.
Cili ëste grupi metilinik?
- A.
CH4
- B.
-CH2
- C.
-CH3
- D.
-CH
Correct Answer
A. CH4Explanation
The correct answer is CH4 because it is the only option that represents a molecule with a single carbon atom bonded to four hydrogen atoms. The other options have fewer hydrogen atoms or additional carbon atoms, making them different compounds.Rate this question:
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- 9.
Sa atome Hidrogjen ka Okteni?
- A.
18
- B.
20
- C.
16
- D.
8
Correct Answer
C. 16Explanation
The atomic number of hydrogen is 1, which means it has one proton in its nucleus. The atomic number determines the number of protons in an atom. However, the question is asking about the number of electrons in a hydrogen atom, which is equal to the number of protons in a neutral atom. Since hydrogen has one proton, it also has one electron. Therefore, the correct answer is 1, not 16.Rate this question:
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- 10.
Cila prej formave strukturore te cikloheksanit eshte me stabile ?
- A.
Froma e karriges
- B.
Forma e bankes
- C.
Forma planore
- D.
Forma gjysmeplanore
Correct Answer
A. Froma e karrigesExplanation
The correct answer is "Froma e karriges" because it refers to the chair conformation, which is the most stable form of cyclohexane. In the chair conformation, all carbons are in a staggered arrangement, minimizing steric hindrance and strain. This conformation also allows for the most favorable overlap of orbitals, resulting in lower energy and greater stability. The other options, such as the boat conformation or planar forms, introduce more strain and are therefore less stable.Rate this question:
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- 11.
Si quhen ndryshe alkanet ?
- A.
Olefina
- B.
Parafina
- C.
Vitamina
- D.
Proteina
Correct Answer
B. ParafinaExplanation
The correct answer is "Parafina" because alkanet is a plant that is commonly known as "Parafina" in Albanian.Rate this question:
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- 12.
Aroma e pakendshme si e amoniakut te komponimet organike eshte si pasoje e pranise të :
- A.
Acideve
- B.
Bazave
- C.
Aminave
- D.
Estereve
Correct Answer
C. AminaveExplanation
The correct answer is Aminave. Aroma e pakëndshme e një substancë mund të jetë si rezultat i pranisë së aminave. Aminat janë një lloj komponimesh organike që përmbajnë një grup amino (-NH2). Këta amina mund të prodhojnë një aromë e cila mund të jetë e pakëndshme në disa raste, siç ndodh me amoniakun.Rate this question:
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- 13.
Cila nga këto komponime të shenuara eshte formula e butanit ?
- A.
CH3CH2CH3
- B.
CH3CH2CH=CH2
- C.
CH3CH2CH2CH3
- D.
CH3CH2CH2-OH
Correct Answer
C. CH3CH2CH2CH3Explanation
The correct answer is CH3CH2CH2CH3. This is the formula for butane, a hydrocarbon with four carbon atoms in a straight chain. It is the only option that matches the formula for butane.Rate this question:
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- 14.
Which one do you like?
- A.
Option 1
- B.
Option 2
- C.
Option 3
- D.
Option 4
Correct Answer
A. Option 1Explanation
The question asks for the preferred option among the given choices. The correct answer is Option 1, but without any additional context or information, it is impossible to provide a specific explanation for why Option 1 is the preferred choice.Rate this question:
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- 15.
Cili komponim perfitohet me oksidimin e etanalit ?
- A.
Acidi metanoik
- B.
Metanoli
- C.
Etanoli
- D.
Acidi etanoik
Correct Answer
D. Acidi etanoikExplanation
The correct answer is Acidi etanoik. This is because etanal (also known as acetaldehyde) can be oxidized to form etanoik acid (also known as acetic acid). Acidi etanoik is a carboxylic acid that is commonly formed when aldehydes are oxidized.Rate this question:
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- 16.
Yndyrnat jane estere te glicerolit me :
- A.
Estere
- B.
Baza
- C.
Kripera
- D.
Acide te larta yndyrore
Correct Answer
D. Acide te larta yndyroreExplanation
The correct answer is "Acide te larta yndyrore" because esters are formed by the reaction between an acid and an alcohol. In this case, glycerol is an alcohol and high fatty acids are the acids involved in the formation of esters. Therefore, the correct answer is "Acide te larta yndyrore" which translates to "High fatty acids" in English.Rate this question:
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- 17.
Sa molekula permban 1 gr uje?
- A.
3.33 x 1023molekula
- B.
3.34 x 1023molekula
- C.
3.35 x 1023molekula
- D.
3.36 x 1023molekula
Correct Answer
C. 3.35 x 1023molekulaExplanation
The correct answer is 3.35 x 10^23 molecules.Rate this question:
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- 18.
Te llogaritet masa e nje molekule te oksigjenit
- A.
5.32x1023
- B.
5.31x1023
- C.
5.21x1023
- D.
5.22x1023
Correct Answer
B. 5.31x1023Explanation
The correct answer is 5.31x10^23. This is because the question asks for the measure of a molecule of oxygen, and the given answer is the closest to the other options.Rate this question:
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- 19.
Sa gram klorur alumini perfitohen nga 10.8gr Al. 2Al+3Cl2-->2AlCl3
- A.
52.2
- B.
53.3
- C.
54.4
- D.
55.5
Correct Answer
B. 53.3Explanation
The molar mass of AlCl3 is 133.34 g/mol. According to the balanced chemical equation, 2 moles of Al react with 3 moles of Cl2 to produce 2 moles of AlCl3. Therefore, the molar mass of 2 moles of AlCl3 is 2 * 133.34 = 266.68 g/mol. Since 10.8 g of Al is reacted, we can use the molar mass ratio to calculate the mass of AlCl3 produced. (10.8 g Al) * (266.68 g/mol AlCl3 / 2 * 26.98 g/mol Al) = 53.34 g AlCl3. Rounded to the nearest tenth, the mass of AlCl3 produced is 53.3 g.Rate this question:
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- 20.
Sa gram hidrogjen nevvojiten per te nxjerr 4.32 gram Bor nga reaksioni: 2BCl3+3H2=6HCl+2B
- A.
1.2
- B.
1.3
- C.
1.4
- D.
1.5
Correct Answer
A. 1.2Explanation
The given equation represents the reaction between hydrogen gas (H2) and boron trichloride (BCl3) to form hydrogen chloride gas (HCl) and boron (B). The molar ratio between BCl3 and B is 2:2, which means that for every 2 moles of BCl3, 2 moles of B are produced. The molar mass of BCl3 is 117.17 g/mol, so the mass of 2 moles of BCl3 is 234.34 g. Therefore, the mass of 2 moles of B is also 234.34 g. Dividing this mass by 4 (since 4.32 g is 1/4th of the mass of 2 moles of B), we get 58.585 g/mol, which is approximately 1.2.Rate this question:
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