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Medical
3 hours, 11 minutes ago
20190221_102052.jpg A gas is allowed to expand at constant temperature from a volume of 400 ml to a volume of one litre. The final pressure of gas is 100mm of Hg. The initial pressure of the gas in nm is 1) 100 2) 200 3) 2504) 500

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S santhosh
Answered 3 hours, 11 minutes ago
PV=constant P1V1=P2V2 P1*400=100*1000 P1= 250 option 3) is correct.
Engineering
4 hours, 15 minutes ago
Screenshot_1152.png

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R Rakhi
Answered 4 hours, 14 minutes ago
Engineering
22 hours, 35 minutes ago
Screenshot_1145.png Identify the major product.Pd, Na2CO3, H2O

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A Ankit
Answered 22 hours, 34 minutes ago
Engineering
1 day, 4 hours ago
Which of the following is true about the solution of sodium in ammonia? (1) It is colourless. (2) It is diamagnetic. (3) Both a and b (4) It is paramagnetic.

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A Ankit
Answered 1 day, 4 hours ago
The reason for the first option- All alkali metal( Na, K, etc.)  dissolves in liquid ammonia giving deep blue solutions which are conducting in nature. These solutions contain ammoniated cations and ammoniated electrons as shown below: M + ( x + y ) NH3 → M+(NH3 )x + e-(NH3)y The blue colour of the solution is considered to be due to ammoniated electrons which absorb energy corresponding to the...
Engineering
1 day, 21 hours ago
Screenshot_1138.png major product formed in given reaction?

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R Rakhi
Answered 1 day, 21 hours ago
Engineering
1 day, 21 hours ago
E.PNG

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K Kshitij
Answered 1 day, 21 hours ago
Engineering
1 day, 21 hours ago
IMG_20190214_213721.jpg Product on Monobromination

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R Rakhi
Answered 1 day, 21 hours ago
Engineering
1 day, 21 hours ago
orthoboric_acid.PNG The correct statement(s) for orthoboric acid is/are (A) It behaves as a weak acid in water due to self ionisation. (B) Acidity of its aqueous solution increases upon addition of ethylene glycol. (C) It has a three dimensional Structure due to bonding (D) It is a weak electrolyte in water.

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R Rakhi
Answered 1 day, 21 hours ago

Engineering
1 day, 21 hours ago
1550554742427-1733967237.jpg Determine which of the following reactions taking place at constant pressure represents system that do work on the surrounding environment-

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A Ankit
Answered 1 day, 21 hours ago
8th  Looking at  the molar coefficients of products and reactants. Work on the surroundings will be done when the number of moles of gases in the products is greater than the number of moles of gas reactants. Both II and III meet these criteria. And in 1st reaction, no gas molecules formed 
Engineering
1 day, 22 hours ago
the oxidation number of Mn in the product of the alkaline oxidative fusion of MnO2 is x. then the value of x is?

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A Ankit
Answered 1 day, 22 hours ago
Let the oxidation state of Mn in MnO42– is x. So, x + 4 (–2) = –2 or x=6 
Engineering
1 day, 22 hours ago
IMG_20190219_110707.JPG Determine which of the following reactions taking place at constant pressure represent surrounding that does work on the system environment

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A Ankit
Answered 1 day, 22 hours ago
Question  determine which of the following reactions taking place at constant pressure represent surrounding that do work on the system environment   Solution-  
Engineering
1 day, 22 hours ago
Screenshot_1128.png 54. How many stereoisomers are possible for the given compound

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A Ankit
Answered 1 day, 22 hours ago
Medical
3 days, 2 hours ago
the temperature gradient in rod of 0.5m long is 80 degree centigrade per metre.if the temp.of hotter end of rod is 30 degree cntgrades,then the temperature of the colder end is? @vijay 

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S safeer
Answered 3 days, 2 hours ago
 
Engineering
3 days, 22 hours ago

The enthalpy change on freezing of 1 mol of water at 50C to ice at −50C is :

(Given fus H = 6 kJ mol−1 at 00C,

Cp (H 2O, l) = 75.3 J mol−1 K−1,

Cp (H2O, s) = 36.8 J mol−1 K−1)

  • Option 1)

     5.44 kJ mol−1

  • Option 2)

     5.81 kJ mol−1

  • Option 3)

     6.56 kJ mol−1

  • Option 4)

     6.00 kJ mol−1

     

 

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S solutionqc
Answered 2 days, 22 hours ago
Option 1)  5.44 kJ mol−1 Option 2)  5.81 kJ mol−1 Option 3)  6.56 kJ mol−1 Option 4)  6.00 kJ mol−1  
Engineering
3 days, 22 hours ago

 The IUPAC name of the following compound is :

  • Option 1)

     1, 1-Dimethyl-2-ethylcyclohexane

  • Option 2)

    2-Ethyl-1,1-dimethylcyclohexane

  • Option 3)

     1-Ethyl-2,2-dimethylcyclohexane

  • Option 4)

     2, 2-Dimethyl-1-ethylcyclohexane

     

 

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S solutionqc
Answered 2 days, 22 hours ago
Option 1)  1, 1-Dimethyl-2-ethylcyclohexane Option 2) 2-Ethyl-1,1-dimethylcyclohexane Option 3)  1-Ethyl-2,2-dimethylcyclohexane Option 4)  2, 2-Dimethyl-1-ethylcyclohexane  
Engineering
3 days, 22 hours ago

Which of the following statements is not true about partition chromatography ?

  • Option 1)

     Mobile phase can be a gas

  • Option 2)

    Stationary phase is a finely divided solid adsorbent

  • Option 3)

     Separation depends upon equilibration of solute between a mobile and a stationary phase

  • Option 4)

    Paper chromatography is an example of partition chromatography

 

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S solutionqc
Answered 2 days, 22 hours ago
Option 1)  Mobile phase can be a gas Option 2) Stationary phase is a finely divided solid adsorbent Option 3)  Separation depends upon equilibration of solute between a mobile and a stationary phase Option 4) Paper chromatography is an example of partition chromatography
Engineering
3 days, 22 hours ago

 The major product of the following reaction is :
 

  • Option 1)

     CH2=CHCH2CH=CHCH3

  • Option 2)

     CH2=CHCH=CHCH2CH3

  • Option 3)

     CH3CH=C=CHCH2CH3

  • Option 4)

     CH3CH=CH−CH=CHCH3

     

 

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S solutionqc
Answered 2 days, 22 hours ago
Option 1)  CH2=CHCH2CH=CHCH3 Option 2)  CH2=CHCH=CHCH2CH3 Option 3)  CH3CH=C=CHCH2CH3 Option 4)  CH3CH=CH−CH=CHCH3  
Engineering
3 days, 22 hours ago

 The major product expected from the following reaction is :

  • Option 1)

  • Option 2)

  • Option 3)

  • Option 4)

 

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S solutionqc
Answered 2 days, 22 hours ago
Option 1) Option 2) Option 3) Option 4)
Engineering
3 days, 22 hours ago

 Among the following, the essential amino acid is :

  • Option 1)

    Alanine

  • Option 2)

     Valine

  • Option 3)

     Aspartic acid

  • Option 4)

     Serine

     

 

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S solutionqc
Answered 2 days, 22 hours ago
Option 1) Alanine Option 2)  Valine Option 3)  Aspartic acid Option 4)  Serine  
Engineering
3 days, 22 hours ago

Which of the following compounds will not undergo Friedel Craft’s reaction with benzene ?

 

  • Option 1)

  • Option 2)

  • Option 3)

  • Option 4)

 

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S solutionqc
Answered 2 days, 22 hours ago
Option 1) Option 2) Option 3) Option 4)
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