Identify X

1. CH3OH

2. Ethyl alcohol

3. Methyl cyanide

4. tert-Butyl alcohol

X की पहचान कीजिए|

1. CH3OH

2. एथिल एल्कोहॉल 

3. मेथिल साइनाइड

4. तृतीयक-ब्यूटिल एल्कोहॉल 

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An aldehyde which undergoes Cannizzaro's reaction and reduces Schiff's reagent but does not reduce Fehling's solution is:

(1) CH3CHO

(2) HCHO

(3) C6H5CHO

(4) salicylaldehyde

एक एल्डिहाइड, जो कैनिजारो अभिक्रिया देता है और शिफ अभिकर्मक को अपचयित करता है, लेकिन फेलिंग विलयन को अपचयित नहीं करता है:

1. CH3CHO

2. HCHO

3. C6H5CHO

4. सैलीसिलैल्डिहाइड

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The product 'C' is

(1)  
(2)
(3)
(4)

उत्पाद 'C' है

(1)  
(2)
(3)
(4)

 56%
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The product R is :

(1)  
(2)
(3)
(4)

उत्पाद R है:

(1)  
(2)
(3)
(4)

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Semicarbazide is:

(1) NH2CONH2

(2) NH2-NH2

(3) NH2CONHNH2

(4) None of these

 

सेमीकार्बेज़ाइड है:

1. NH2CONH2

2. NH2-NH2

3. NH2CONHNH2

4. इनमें से कोई नहीं

 

 53%
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The basicity order of I, II and III is

(1) III > I > II

(2) I > II > III

(3) III > II > I

(4) II > III > I

I, II और III का क्षारीय क्रम है

(1) III > I > II

(2) I > II > III

(3) III > II > I

(4) II > III > I

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In the Cannizzaro's reaction given below,

2Ph-CHOOH-Ph-CH2OH + PhCOO-

the slowest step is:

(1) The attack of OH- at the carbonyl group

(2) the transfer of hydride to the carbonyl group

(3) the abstraction of proton from the carboxylic acid

(4) the deprotonation of Ph-CH2OH

नीचे दी गई कैनिजारो अभिक्रिया में,

2Ph-CHOOH-Ph-CH2OH + PhCOO-

सबसे धीमा पद है:

1. कार्बोनिल समूह पर OHका आक्रमण 

2. कार्बोनिल समूह में हाइड्राइड का स्थानांतरण

3. कार्बोक्सिलिक अम्ल से प्रोटॉन का पृथक्करण

4. Ph-CH2OH का विप्रोटॉनन 

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In the reaction

the oxidizing agent can be

1. alkaline KMnO4

2. acidified K2Cr2O7

3. benedict's solution

4. All of the above

अभिक्रिया में,

ऑक्सीकारक हो सकता है-

1. क्षारीय KMnO4

2. अम्लीकृत K2Cr2O7

3. बेनेडिक्ट विलयन 

4. उपरोक्त सभी

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PhCOOH, PhMe can be separated by

(1) KMnO4

(2) aq. NaHCO3 + n–hexane

(3) H2O

(4) All of these

PhCOOH, PhMe को किसके द्वारा पृथक किया जा सकता है

(1) KMnO4

(2) जलीय NaHCO3 + n–हेक्सेन 

(3) H2O

(4) ये सभी 

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Reactivity order towards a nucleophile is

(1) RCOCI > RCOOEt > (RCO)2O > RCONH2

(2) RCOCI > (RCO)2O > RCOOEt > RCONH2

(3) (RCO)2 > RCOCI > RCOOEt > RCONH2

(4) (RCO)2O > RCOOEt > RCOCI > RCONH2

नाभिकरागी के प्रति अभिक्रियाशीलता का क्रम है-

(1) RCOCI > RCOOEt > (RCO)2O > RCONH2

(2) RCOCI > (RCO)2O > RCOOEt > RCONH2

(3) (RCO)2 > RCOCI > RCOOEt > RCONH2

(4) (RCO)2O > RCOOEt > RCOCI > RCONH2

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