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E t h y l space a l c o h o l space r e a c t s space w i t h space H C l space b u t space n o t space w i t h space H C N space b e c a u s e colon

Chemistry-General

  1. C subscript 2 H subscript 5 O H space i s space w e a k space b a s e space a n d space H C N space i s space w e a k space b a s e
  2. H C l space i s space s t r o n g space a c i d space a n d space C subscript 2 H subscript 5 O H space i s space w e a k space b a s e
  3. None of the above
  4. C subscript 2 H subscript 5 O H space i s space s t r o n g space a c i d space a n d space H C N space i s space w e a k space a c i d

    Answer:The correct answer is: H C l space i s space s t r o n g space a c i d space a n d space C subscript 2 H subscript 5 O H space i s space w e a k space b a s eWeak base reacts with strong acid.

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    Etherates are

    Etherates are complexes of ethers with Lewis acid 

    Etherates are

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    Etherates are complexes of ethers with Lewis acid 
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    The following substance can be used as a raw material for obtaining alcohol:

    The following substance can be used as a raw material for obtaining alcohol:

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    Assertion : Different colours travel with different speed in vacuum
    Reason : Wavelength of light depends on refractive index of medium

    Assertion : Different colours travel with different speed in vacuum
    Reason : Wavelength of light depends on refractive index of medium

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    If f : [0, p] → R is continuous and not stretchy integral subscript 0 end subscript superscript pi end superscript blankf(x) sin x dx = not stretchy integral subscript 0 end subscript superscript pi end superscript blankf(x) cos x dx = 0, then the number of roots of f(x) in (0, p) is

    If f : [0, p] → R is continuous and not stretchy integral subscript 0 end subscript superscript pi end superscript blankf(x) sin x dx = not stretchy integral subscript 0 end subscript superscript pi end superscript blankf(x) cos x dx = 0, then the number of roots of f(x) in (0, p) is

    maths-General
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    Lucas reagent produces cloudiness immediately with:

    Reactivity order of  towards Lucas reagent is, Tertiary>Secondary>Primary alcohol.

    Lucas reagent produces cloudiness immediately with:

    chemistry-General
    Reactivity order of  towards Lucas reagent is, Tertiary>Secondary>Primary alcohol.
    General
    physics-

    Assertion : The refractive index of diamond is square root of 6 and that of liquid is square root of 3
    If the light travels from diamond to the liquid, it will totally reflected when the angle of incidence is 30o
    Reason :mu equals fraction numerator 1 over denominator sin invisible function application C end fraction where mu is the refractive index of diamond with respect to liquid

    Assertion : The refractive index of diamond is square root of 6 and that of liquid is square root of 3
    If the light travels from diamond to the liquid, it will totally reflected when the angle of incidence is 30o
    Reason :mu equals fraction numerator 1 over denominator sin invisible function application C end fraction where mu is the refractive index of diamond with respect to liquid

    physics-General
    General
    maths-

    If f : R → R is continuous and differentiable function such that not stretchy integral subscript negative 1 end subscript superscript x end superscript blankf(t) dt + f¢¢¢ (3) not stretchy integral subscript x end subscript superscript 0 end superscript d t equals not stretchy integral subscript 1 end subscript superscript x end superscript blankt3
    dt – f ¢ (1) not stretchy integral subscript 0 end subscript superscript x end superscript blankt2 dt + f ¢¢ (2) not stretchy integral subscript x end subscript superscript 3 end superscript blankt. dt, then the value of f ¢ (4) is :

    If f : R → R is continuous and differentiable function such that not stretchy integral subscript negative 1 end subscript superscript x end superscript blankf(t) dt + f¢¢¢ (3) not stretchy integral subscript x end subscript superscript 0 end superscript d t equals not stretchy integral subscript 1 end subscript superscript x end superscript blankt3
    dt – f ¢ (1) not stretchy integral subscript 0 end subscript superscript x end superscript blankt2 dt + f ¢¢ (2) not stretchy integral subscript x end subscript superscript 3 end superscript blankt. dt, then the value of f ¢ (4) is :

    maths-General
    General
    chemistry-

    An organic compound  reacts with P C l subscript 5 to give. The compound  with sodium metal gives n minus b u tan e. space T h u s comma space A space a n d space B space a r e colon

    An organic compound  reacts with P C l subscript 5 to give. The compound  with sodium metal gives n minus b u tan e. space T h u s comma space A space a n d space B space a r e colon

    chemistry-General
    General
    physics-

    Assertion :We cannot produce a real image by plane or convex mirrors under any circumstances
    Reason : The focal length of a convex mirror is always taken as positive

    Assertion :We cannot produce a real image by plane or convex mirrors under any circumstances
    Reason : The focal length of a convex mirror is always taken as positive

    physics-General
    General
    chemistry-

    Which of the following compounds is weakest acid?

    Electron withdrawing groups (like – N O subscript 2 right parenthesis increase the acidity of phenols by stabilising corresponding phenoxide ion. The effect of – N O subscript 2 group will beminimum at m-position due to lack of increased delocalisation of electrons in it. Hence, m-nitrophenol is the weakest acid among these.

    Which of the following compounds is weakest acid?

    chemistry-General
    Electron withdrawing groups (like – N O subscript 2 right parenthesis increase the acidity of phenols by stabilising corresponding phenoxide ion. The effect of – N O subscript 2 group will beminimum at m-position due to lack of increased delocalisation of electrons in it. Hence, m-nitrophenol is the weakest acid among these.
    General
    chemistry-

    General formula for alcohols is:

    General formula for alcohols is C subscript n H subscript left parenthesis 2 n plus 1 right parenthesis O H. Primary alcohols have negative C H subscript 2 space O H space g p. Secondary Alcohols have  and tertiary alcohols have 

    General formula for alcohols is:

    chemistry-General
    General formula for alcohols is C subscript n H subscript left parenthesis 2 n plus 1 right parenthesis O H. Primary alcohols have negative C H subscript 2 space O H space g p. Secondary Alcohols have  and tertiary alcohols have 
    General
    chemistry-

    What is formed when glycerol reacts with excess of HI?

    When glycerol reacts with HIcomma space i s o minus p r o p y l space iodide is obtained

    What is formed when glycerol reacts with excess of HI?

    chemistry-General
    When glycerol reacts with HIcomma space i s o minus p r o p y l space iodide is obtained
    General
    chemistry-

    On conversion into the Grignard reagent followed by treatment with absolute ethanol, how many isomeric alkyl chlorides would yield 2-methylbutane?

    R H space i s space left parenthesis C H subscript 3 right parenthesis subscript 2 space C H bullet C H subscript 2 space C H subscript 3
    Thus, 

    On conversion into the Grignard reagent followed by treatment with absolute ethanol, how many isomeric alkyl chlorides would yield 2-methylbutane?

    chemistry-General
    R H space i s space left parenthesis C H subscript 3 right parenthesis subscript 2 space C H bullet C H subscript 2 space C H subscript 3
    Thus, 
    General
    chemistry-

    On heating glycerol with conc.H subscript 2 S O subscript 4 comma a compound is obtained which has bad odour. The compound is:

    On heating glycerol with conc.H subscript 2 S O subscript 4 comma a compound is obtained which has bad odour. The compound is:

    chemistry-General
    General
    chemistry-

    The following reaction is known as 

    In the presence of anhydrous Z n C l subscript 2 comma phenol form salicyladehyde. It is Gattermann-aldehyde reaction.

    The following reaction is known as 

    chemistry-General
    In the presence of anhydrous Z n C l subscript 2 comma phenol form salicyladehyde. It is Gattermann-aldehyde reaction.