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Formation of alkane by the action of Zn on alkyl halide is called ?

A. Frankland`s reaction B. Wurtz reaction C. Cannizzaro reactions D. Kolbe`s reactions

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Explanation

The formation of alkanes by the action of zinc on alkyl halides is known as Frankland's reaction. In this reaction, zinc acts as a reducing agent and facilitates the coupling of two alkyl halides to form an alkane. This reaction is different from the Wurtz reaction, where sodium is used instead of zinc.

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$C_2 H_5Cl + H_2 \rightarrow Product$ . Name the Product

A. Ethene B. Ethane C. Ethyne D. Methane + Methane

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Explanation

$ 2R - X + Zn \rightarrow R - R + ZnX_ 2 $ (Frankland`s Reaction)

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$ C_{10}H_{22} \rightarrow C_4 H_8 + C_6 H_{14} $ Name the reaction

A. Elimination B. Addition C. Pyrolysis D. Isomerisation

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Explanation

when Higher hydrocabon is heated it decomposes to Lower hydrocarbon (alkane, alkene). This reaction is known as Cracking or Pyrolysis

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Which alkane is known as Mars Gas

A. $CH_4 $ B. $ C_2 H_6 $ C. $ C_3 H_8 $ D. $ C_4 H_{10} $

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Explanation

Methane is known as mars gas

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Which one of the following contain iso-propyl group ?

A. 2,2,3,3-tetramethyl pentane B. 2- methyl pentane C. 2,2,3-trimethyl pentane D. 3,3-dimethyl pentane

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How many moles of $O_2$ are required for complete combustion of one mole of propane

A. 3 B. 10 C. 5 D. 6

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Methyl chloride react with Lithium diethyl Copper to give----

A. Ethane B. Propane C. Butane D. Propene

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Which of the following alkyl bromides may be used for the synthesis of 2,3-dimethyl butane by Wurtz raection ?

A. n- propyl bromide B. iso-propyl bromide C. n-butyl bromide D. iso-butyl bromide

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Explanation

The Wurtz reaction involves the coupling of alkyl halides using sodium metal in dry ether to form higher alkanes. For the synthesis of 2,3-dimethylbutane, we need two isopropyl bromide (iso-propyl bromide) molecules. When two isopropyl bromide molecules undergo the Wurtz reaction, they form 2,3-dimethylbutane.

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Alkene usually show which type of reaction ?

A. Substitution B. Addition C. Elimination D. Rearrangement

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Explanation

Alkene shows mainly electrophilic addition reactions.

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When ethene treated with $Br_2$ in presence of $CCl_4$ which compound is formed

A. 1, 2-dibromoethane B. 1-bromo-2-chloroethane C. Both 1 & 2 D. 1-bromo ethaen

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Explanation

$ CH_2 = CH_2 + Br_2 \xrightarrow [] {CCl_4} Br - CH_2 - CH_2-Br $

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