Ozonolysis of Alkynes
Trending Questions
Q. Which of the following will not convert N2H4 into N2
1) oxygen
2) CuSO4
3) Ozone
4) Zn + HCl
Q. Which of the following compounds on reductive ozonolysis give only glyoxal?
- Ethylene
- Benzene
- Toluene
- Cyclobuta-1, 3-diene
Q. Ozonolysis followed by hydrolysis of
- None of the above
Q. After ozonolysis of an alkene, we get mixture of 2−methylpropanal, glyoxal and formaldehyde. What is the alkene taken here?
Q. in cleavage of the ether CH2-O-CH2-CH3, why CH2-X is formed and not CH3-CH2-X?
Q.
Ozonolysis of an organic compound gives formaldehyde as one of the products. This confirms the presence of :
- A vinyl group
- Two ethylenic double bonds
- An isopropyl group
An acetylenic triple bonds
Q.
Propose structures for hydrocarbons that give the following products on oxidative cleavage by KMnO4 or O3:
HOOC(CH2)8COOH
Q.
Complete hydrolysis of XeF4 and XeF6 results in the formation of:
XeOF2
XeO3
XeOF4
XeOF3
Q. What is "X" in the following reaction?
- Pent-1-yne
- Nona-2, 6-diyne
- Hex-3-yne
- 2-Methylhept-3-yne
Q.
Propose structures for hydrocarbons that give the following products on oxidative cleavage by KMnO4 or O3:
HOOC(CH2)8COOH
Q. What is "X" in the following reaction?
- Pent-1-yne
- Nona-2, 6-diyne
- Hex-3-yne
- 2-Methylhept-3-yne
Q. In the above reaction ′X′ is 
- O3
- Hot KMnO4 solution
- O2
- HNO3
Q. Propose structures for hydrocarbons that give the following products on oxidative cleavage by KMnO4 or O3:
Q. The addition of HBr to 3−methyl−1−butene leads to several products.One of these products, the major product, in fact, is formed via a rearranged carbocation. Identify that product?
- (CH3)2CBr−CH2−CH3
- (CH3)2CH−CH2−CH2Br
- CH3−CH2−CH2−CH2−CH2Br
- (CH3)2CH−CHBr−CH3
Q. How is ozone a strong oxidizing agent?
Q. What is "X" in the following reaction?
- Pent-1-yne
- Nona-2, 6-diyne
- Hex-3-yne
- 2-Methylhept-3-yne
Q.
Propose structures for hydrocarbons that give the following products on oxidative cleavage by KMnO4 or O3:
Q. Assertion :When cis−3, 4−dimenthyl−3−hexene is hydrogenated in presence of a Ni catalyst, a meso hydrocarbon is obtained, However, when trans−3, 4−dimethyl−3−hexene is hydrogenated with Ni catalyst, a racemic mixture of product is obtained Reason: Catalytic hydrogenation occur in syn orientation
- Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
- Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
- Assertion is correct but Reason is incorrect
- Both Assertion and Reason are incorrect
Q. Write one reagent in each case to make distinction between.
Q. In the above reaction ′X′ is:
- KMnO4
- O3
- HgSO4/H2SO4
- OsO4
Q.
Ozonolysis of an organic compound gives formaldehyde as one of the products. This confirms the presence of :
- A vinyl group
- Two ethylenic double bonds
- An isopropyl group
An acetylenic triple bonds
Q. A hydrocarbon which decolorises KMnO4 solution & gives precipitate with ammonical AgNO3 is:
- 2-butene
- n-pentane
- 2-butyne
- 1-butyne
Q. Chemical mutagen EMS belong to category of
- Acridine dyes
- Alkylating agent
- Base analogue
- Nitrous acid
Q. Propose structures for hydrocarbons that give the following products on oxidative cleavage by KMnO4 or O3:
Q. Consider the dehydrohalogenation of 2-bromo-2-methylhexane with methoxide and tert-butoxide.Which of the following statements is true?
- Hofmann product is major in both cases
- Methoxide gives more and t-butoxide gives less Hofmann product
- Methoxide gives more and t-butoxide gives less Saytzeff product
- Saytzeff product is the major product in both cases
Q. In the above reaction ′X′ is
- HNO3
- O3
- Hot KMnO4 solution
- O2
Q. Write the chromogen, chromophore and auxchrome present in para hydroxy azo benzene.
Q. Among the following compounds, the one that gets hydrolysed to form metallic hydroxide, hydrogen peroxide and oxygen is:
- Na2O
- Na2O2
- Li2O
- Li2O2
- KO2
