Description : Classify the following compounds containing double bond and triple bond – Ethyne, benzene, Butyne, pentene
Last Answer : Double bond: Benzene, pentene Triple bond: Ethyne, Butyne
Description : What do you observe when ethyne is passed through ammoniacal cuprous chloride solution?
Last Answer : A red-brown precipitate of copper acetylide is formed.
Description : Ethanoic acid is commonly called - (1) Acetic acid (2) Sulphuric acid (3) Sodium Ethoxide (4) Ethyne
Last Answer : (1) Acetic acid Explanation: Ethanoic acid is commonly called acetic acid and belongs to a group of acids called carboxylic acids. 58% solution of acetic acid in water is called vinegar and is used widely as a preservative in pickles.
Description : Name two reagents which can be used to distinguish between ethene and ethyne.
Last Answer : Ans. Tollen‘s reagent
Description : Explain why ethyne molecule is linear?
Last Answer : Ans It is because each carbon atom in ethyne is sp hybridized
Description : Acetic acid undergoes reduction with LiAlH4 to give (a) Ethanol (b) Ethane (c) Ethanal (d) Ethyne
Last Answer : Ethanol
Description : What two atomic orbitals or hybrid atomic orbitals overlap to form the carbon-carbon σ bond in ethyne? (a) sp3–sp3 (b) sp2–sp2 (c) s–s (d) sp–sp
Last Answer : sp–sp
Description : What is the formula for ethyne?
Last Answer : ANSWER: C2H2
Description : Iodobenzene can be prepared by (a) treating chlorobenzene with I2 using FeCl3 catalyst. (b) treating phenol with I2 in NaOH solution. (c) treating benzenediazonium chloride with KI (d) treating benzene with CH3I using AlCl3 catalyst
Last Answer : treating benzenediazonium chloride with KI
Description : Aniline is prepared by (a) the reaction of benzene with ammonia (b) the reduction of nitrobenzene with Sn/HCl (c) the dehydrogenation of nitrobenzene (d) the reaction of nitrobenzene with I2/NaOH
Last Answer : the reduction of nitrobenzene with Sn/HCl
Description : Which of the following statements is false about toluene? (a) can be prepared by treating benzene with methyl chloride in the presence of AlCl3. (b) is converted to benzoic acid on refluxing with ... (d) can be nitrated with concentrated nitric acid to give a mixture of ortho and meta nitrotoluene.
Last Answer : can be nitrated with concentrated nitric acid to give a mixture of ortho and meta nitrotoluene
Description : Pick up the correct statement from the following: (A) The phenol is carbolic acid (B) The phenol is either extracted from coal-tar or prepared from benzene (C) Phenol reacts with formaldehyde, to form phenol formaldehyde resin (D) All the above
Last Answer : Answer: Option D