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	By reaction Grignard's reagent with the HCHO we get	A. 1° - alcohol B. 2° - alcohol C. 3° - alcohol D. All of these
2	When primary amine reacts with chloroform in ethanolic KOH, then the product is	A. An isocyanide B. An aldehyde C. A cyanide D. An alcohol
3	Alkyl halides are considered to be very reactive compounds towards nucleophiles because	A. They have an electrophilic carbon B. They have an electrophilic carbon and a good leaving group C. They have an electrophilic carbon and a bad leaving group D. They have a nucleophilic carbon and a good leaving group
4	Organic compounds containing halogen atom are called:	A. R---OH B. R----X C. R----NH₂ D. R----COH
5	E₁mechanism is generally shown by	A. 1° - RX B. 2° - RX C. 3° - RX D. None of these
6	1, 3-Dibromopropane reacts with metallic zinc to form	A. Propene B. Propane C. Cyclopropane D. Hexane
7	Reation of which with Grignard's reagent gives primary alcohol:	A. Formaldehyde B. Aldehyde C. Ketones D. Acetone
8		A. Electronphilic substitution B. Electrophilic addition C. Free radical substitution D. Nuclephilic substitution
9	S_N1 reaction of alkylhalides leads to	A. Retention of configuration B. Recemisation C. Inversion of configuration D. None of these
10	C- X bond is strong in	A. CH₃Cl B. CH₃Br C. CH₃F D. CH₃I

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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

For the carbylamine reaction we need hot alc.KOH and

Alcohol can be prepared from Grignard's reagent with an aldehyde: If we start with formaldehyde the product alcohol with be

If ketone reacts with Grignard's reagent, it also produces alcohol, But it will be a

Which one of the following will have the maximum dipole moment

Ethyl alcohol gives ethyl chloride with the help of

A set of compounds in which reactivity of halogen atom in the ascending order is

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

which one of the following is not a nucleophile?

Which is a good nucleophile?

When primary amine reacts with chloroform in ethanolic KOH, then the product is

Reaction of Griganard's reagent with CO2gives:

Which halide among the following is used as methylating agent?

Grignard reagent is reactive due to :

Elimination bimolecular reactions involve:

When ethyl iodide and n-propyl iodide are allowed to react with sodium metal in ether, the number of alkanes that could be produced is

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

The reaction of 4-bromobenzyl chloride with NaCN in ethanol leads to

Which of the following chlorocompounds is heat easily hydrolysed by hydorxide ion to give the product indicated

Among the following the most reactive towards alcoholic KOH is

By simply reacting Grignand's reagent with water we get

Alkyl halides react with lithium dialkyl copper reagents to give

Organic compounds containing halogen atom are called:

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

Gammexane is

A carbon atom carrying a postitive charge and attached to three other atoms of groups is called

For which mechanisms, the first step involved is the same:

SN2reactions can be best carried out with:

When formaldehyde is added to Grignard reagent we get

In a primary alkyl halide, the halogen atom is attached to a carbon which is further attached to

Grignard reagent is not prepared in aqueous medium but prepared in ether medium because

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Top Scorers Of ECAT Chemistry Chapter 21 Alkyl Halides MCQ`s Test

ECAT Chemistry Chapter 21 Important MCQ's

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Reaction of Griganard's reagent with CO₂gives:

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

SN₂reactions can be best carried out with: