General formula of Grignard reagent

1.  RMgX

2.  R-ZnX

3.  R-Hg-X

4.  Mg-R-X

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4
Correct Answer :

RMgX


Explanation :
No Explanation available for this question

what is the formula of X is

1.  C2H5CN

2.  C2H5NC

3.  C2H5OH

4.  C2H8O

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4
Correct Answer :

C2H5CN


Explanation :
No Explanation available for this question

Conformational isomers are due to

1.  Free rotation about C-C single bond

2.  Frozen rotation about C-C single bond

3.  Frozen rotation about C-C double bond

4.  Restricted rotation about C-C single bond

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4
Correct Answer :

Free rotation about C-C single bond


Explanation :
No Explanation available for this question

The method of separation of enantiomers from racemic mixture is known as

1.  Inversion

2.  Racemisation

3.  Resolution

4.  Asymmetric synthesis

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4
Correct Answer :

Resolution


Explanation :
No Explanation available for this question

1.5 gram of an organic compound was dissolved in 10 ml of ethanol and placed in 5.0 cm length polarimeter tube. At 250C observed rotation was +1.20. The specific rotation of the sample is

1.  +160

2.  +1.60

3.  +1.20

4.  +2.40

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4
Correct Answer :

+160


Explanation :
No Explanation available for this question

One Faraday of current was passed through the electric cells placed in series containing fused electrolytes with Ag+2,Ni2+,Cr3+ ions. The amount of Ag(at.wt=108), Ni(at.wt=59) and Cr(at.wt=52)

1.  Ag 108g, Ni 29.5g, Cr 17.3g

2.  Ag 108g,Ni 59.0g, Cr 52.0g

3.  Ag 108g, Ni 108.0g, Cr 108.0g

4.  Ag 108g,Ni 117.5g, Cr 166.0g

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4
Correct Answer :

Ag 108g, Ni 29.5g, Cr 17.3g


Explanation :
No Explanation available for this question

The olefin which on ozonolysis gives CH3CH2CHO and CH3CHO is

1.  1-Butene

2.  2-Butene

3.  1-Pentene

4.  2-Pentene

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4
Correct Answer :

2-Pentene


Explanation :
No Explanation available for this question

Statement-1: Anti-Markovnikovs addition of halogen acid (HX) in presence of peroxide is not applicable to the addition of HCl. Statement-2: The H

1.  Both statement 1 and 2 are true and statement 2 is correct explanation of statement 1

2.  Both statement 1 and 2 are true and statement 2 is not correct explanation of statement 1

3.  Statement 1 is true, Statement 2 is false

4.  Statement 1 is false, Statement 2 is true

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4
Correct Answer :

Both statement 1 and 2 are true and statement 2 is correct explanation of statement 1


Explanation :
No Explanation available for this question

The rate constant of a reaction increased by 3 times for every 100C rise of temperature uniformly in the range 200C to 800C, if the rate of constant at 300C is K, what is its value a

1.  9k

2.  27k

3.  6k

4.  81k

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4
Correct Answer :

27k


Explanation :
No Explanation available for this question

Ethylene reacts with Br2 in CCl4 to from X. When X is reacted with alcoholic KOH. Y is formed. Here X and Y are

1.  BrCH2-CH2Br and C2H2

2.  C2H5Br and C2H4

3.  C2H5Br and C6H6

4.  C2H3Br3 and C2H4

View Answer  
4
Correct Answer :

BrCH2-CH2Br and C2H2


Explanation :
No Explanation available for this question
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