ECAT Pre Engineering Chemistry Chapter 21 MCQ Test With Answer

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ECAT Chemistry Chapter 21 Important MCQ's

Sr.#	Question	Answer
1	The compounds or species in search of electrons are called	A. Elctrophiles B. Nucleophile C. Nitrities D. Bases
2	What happens when CCl₄is treated with AgNO₃solution?	A. NO₂will be evolved B. A white ppt. of AgCl will form C. CCl₄will dissolve in AgNO₃solution D. Nothing will happen
3	Grignard's reagent is	A. Alkyl halide B. Magnesium halide C. Alkyl magnesium halide D. Ethereal solution of an alkyl halide
4	Best medhod of preparation of alkyl halide from alcohals is by its reaction with:	A. HX B. SOCl₂ C. Px₅ and PX₃ D. All
5	The elimination of hydrogen halide from adjacent carbon atoms is called	A. Dehydrogenation B. Hydrogenation C. Dehydrohalogenation D. Hydrohalogenation
6	When metallic sodium in ether is heated with ethyl chloride, which alkane is formed	A. Propane B. Ethane C. Iso-butane D. N-butane
7	Metal used in the preparation of Grignard's reagent is:	A. Ca B. Na C. Mg D. Zn
8	How many monochlorobutanes will be possible on chlorination of n-butane?	A. 1 B. 2 C. 3 D. 5
9	The alkyl halide is converted into an alcohol by	A. Addition B. Substitution C. Dehydrohalogenation D. Elimination
10	In primary alkyl halides, the halogen atom is attached to a carbon which attached to how many carbon atoms?	A. Two B. Three C. One D. Four

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ECAT Pre Engineering Chemistry Chapter 21 MCQ Test With Answer

MCQ's Test For ECAT Chemistry Chapter 21 Alkyl Halides

ECAT Chemistry Chapter 21 Alkyl Halides

Which of the following compounds could be prepared by reacting bromoethane with KCN and then reducing the product

When CO2is made to react with ethyl magnesium iodide, followed by acid hydrolysis, the product formed is

Which one of the following is not a nucleophile

Cl2reacts with CS2in presence of AlCl3to form

Alkyl halides react with Mg in dry ether to form

Which of the following undergoes uncleophilic substitution exclusively by SN1 mechanism?

Alkyl halides on treatment with aqueous KOH give

When CO2 is made to react with ethyl megnesium iodine, followed by hydrolysis, the product formed is:

Alkyl halides on treatment with metallic Na give

Alkyl halides are considered to be very reactive compounds towards nucleophiles, because:

Which of the followings is not a nulceophile

Alkyl halides on treatment with Zn and HCI gives

SN2 reaction can be best carried out with

C6H6Cl6can be obtained from

Catalyst in the reaction ROH + SOCl2-------> RCL+SO2+HCl is:

The alkyl halide is converted into an alcohol by

The rate of E1reaction depends upon:

When alkyl halides are heated with aqueous solution of ammonia at about 100°C, amines are formed. This reaction is known as

C- X bond is strong in

Elimination bimolecular reactions usually obey

If Grignard reagent is allowed to react with another alkyl halide the main product is

What happens when CCl4is treated with AgNO3solution?

which one of the following is not a nucleophile?

A reaction in which an atom or a group of atoms replaces an atom or a group of atoms in the molecule of a substance is known as

Electronegativity order of alkyl halides is:

Cyanoform is ________ acid in nature than the chloroform. The missing word is

Alkanes may be prepared by the reaction of alkyl halides with

Which one of the following will have the maximum dipole moment

SN1 reaction of alkylhalides leads to

Benzene hexachloride is used as

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ECAT Chemistry Chapter 21 Important MCQ's

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When CO₂is made to react with ethyl magnesium iodide, followed by acid hydrolysis, the product formed is

Cl₂reacts with CS₂in presence of AlCl₃to form

Which of the following undergoes uncleophilic substitution exclusively by S_N1 mechanism?

When CO₂is made to react with ethyl megnesium iodine, followed by hydrolysis, the product formed is:

C₆H₆Cl₆can be obtained from

Catalyst in the reaction ROH + SOCl₂-------> RCL+SO₂+HCl is:

The rate of E₁reaction depends upon:

What happens when CCl₄is treated with AgNO₃solution?

S_N1 reaction of alkylhalides leads to