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What is the number of moles of sp² hybrid carbon atoms in one mole of hexa-1,4-diyne?
Hexa-1,4-diyne has two triple bonds. Each triple bond consists of two sp hybridized carbons. The remaining two carbons are sp² hybridized. So, there are 3 sp² hybridized carbons.
Identify the product P obtained in following reaction. Benzene + ozone (excess) → Benzene triozonide → P + H₂O₂
The ozonolysis of benzene with excess ozone followed by hydrolysis typically yields benzoic acid and hydrogen peroxide.
Identify the molecular formula of an alkane that exhibits only two different structural isomers.
C₃H₈ (propane) has only two structural isomers: n-propane and isopropane.
Which among the following alkenes is most stable?
The stability of alkenes increases with the number of alkyl groups attached to the double bond. R₂C=CR₂ is the most stable due to maximum alkyl substitution.
Which among the following statements is true about gammexane?
Gammexane is an isomer of benzene hexachloride (BHC), which is a group of related compounds.
What is the number of moles of 'C' atoms present in n mole of alkane if it exhibits three structural isomers?
An alkane with three structural isomers is typically C₄H₁₀ (butane), which has 4 carbon atoms per molecule. So, n moles would contain 4n moles of carbon atoms.
What is the number of moles of nascent hydrogen required to prepare 1 mole of methane from iodomethane?
The reaction of iodomethane with nascent hydrogen (e.g., from Zn and HCl) produces methane. One mole of iodomethane requires one mole of hydrogen.
Which of the following is formed when propene is heated with chlorine at high temperature?
At high temperatures, propene undergoes allylic chlorination, leading to the formation of 3-chloropropene.
Identify the correct stability order of alkyl substituted alkenes from following.
The stability of alkenes increases with the number of alkyl groups (R) attached to the double bond. The correct order is R₂C=CR₂ > R₂C=CHR > R₂C=CH₂.
Identify the molecule undergoing 'sp' hybridization?
C₂H₂ (acetylene) has carbon atoms with sp hybridization due to the presence of a triple bond.
Which among the following groups in ortho and para directing?
-OCH₃ (methoxy group) is an ortho and para directing group due to its electron-donating nature.
What is the difference in molar mass of propene and the product obtained when propene reacts with excess dihydrogen in presence of Pd at room temperature?
Propene (C₃H₆, molar mass 42 g/mol) reacts with hydrogen to form propane (C₃H₈, molar mass 44 g/mol). The difference is 2 g/mol.
Which among the following compounds is obtained when methyl magnesium bromide is reacted with ammonia?
Methyl magnesium bromide reacts with ammonia to form methyl amine.
What is the number of 'C' atoms undergoing hybridisation with 50% 'S' character in following compound?
The compound shown has two carbon atoms with sp hybridization (50% s character), which are part of the triple bonds.
Which among the following compounds has highest boiling point?
2-Methyl butane (isopentane) has a higher boiling point than the other options due to its branched structure which allows for more effective London dispersion forces compared to smaller alkanes.
Identify meta directing group from following.
-CHO (aldehyde group) is a meta directing group due to its electron-withdrawing nature through resonance.
Identify the product P in following reaction. Benzene + Cl₂ (excess) → P
Hexachlorobenzene is formed when benzene reacts with excess chlorine in the presence of UV light.
Which among the following is the correct stability order of alkyl substituted alkenes?
The stability order of alkyl substituted alkenes is R₂C=CR₂ > R₂C=CH₂ > R-CH=CH₂, with higher substitution leading to greater stability.
Identify ortho and para directing group from following.
-CH₃ (methyl group) is an ortho and para directing group due to its electron-donating nature.
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