General
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Chemistry-

What is formed when glycerol reacts with excess of HI?

Chemistry-General

    Answer:The correct answer is: When glycerol reacts with HIcomma space i s o minus p r o p y l space iodide is obtained

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    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-

    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-

    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-

    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-

    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.
    General
    chemistry-

    At 530 K, glycerol reacts with oxalic acid to produce

    Oxalic acid on reaction with glycerol at 530K temperature furnishallyl alcohol.

    At 530 K, glycerol reacts with oxalic acid to produce

    chemistry-General
    Oxalic acid on reaction with glycerol at 530K temperature furnishallyl alcohol.
    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-

    The conversion of m-nitrophenol to resorcinol involves respectively

    The conversion of m-nitrophenol to resorcinol involves respectively

    chemistry-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
    chemistry-

    The alcohol that produces turbidity immediately with Z n C I subscript 2 divided by c o n c. space H C I at room temperature

    M i x t u r e space o f space a n space h y d r o u s space Z n C l subscript 2 space end subscript a n d space c o n c. H C l is known as Lucas reagent. Lucas test is used for the distinction between primary, secondary and tertiary alcohols.
    The tertiary alcohol reacts immediately with Lucas reagent producing turbidity. The secondary alcohol gives turbidity within 5-10 min and primary alcohol doesn’t give turbidity at all at room temperature. In the given alternates, 2-hydroxy-2-methyl propane is 3 degree spacealcohol, so it is more reactive.

    The alcohol that produces turbidity immediately with Z n C I subscript 2 divided by c o n c. space H C I at room temperature

    chemistry-General
    M i x t u r e space o f space a n space h y d r o u s space Z n C l subscript 2 space end subscript a n d space c o n c. H C l is known as Lucas reagent. Lucas test is used for the distinction between primary, secondary and tertiary alcohols.
    The tertiary alcohol reacts immediately with Lucas reagent producing turbidity. The secondary alcohol gives turbidity within 5-10 min and primary alcohol doesn’t give turbidity at all at room temperature. In the given alternates, 2-hydroxy-2-methyl propane is 3 degree spacealcohol, so it is more reactive.
    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
    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
    chemistry-

    An alcohol on alk. K M n O subscript 4 oxidation gives first acetone and on further oxidation acetic acid. It is:

    C H subscript 3 C H subscript 2 O H not stretchy rightwards arrow with left square bracket 0 right square bracket on top C H subscript 3 C H O not stretchy rightwards arrow with left square bracket 0 right square bracket on top C H subscript 3 C O O H  (Aldehyde and acid of same carbon atoms)
    C H subscript 3 C H O H C H subscript 2 not stretchy rightwards arrow with left square bracket O right square bracket on top C H subscript 3 C O C H subscript 3 not stretchy rightwards arrow with left square bracket O right square bracket on top C H subscript 3 C O O H plus H C O O H  (Acid of less carbon atom)

    An alcohol on alk. K M n O subscript 4 oxidation gives first acetone and on further oxidation acetic acid. It is:

    chemistry-General
    C H subscript 3 C H subscript 2 O H not stretchy rightwards arrow with left square bracket 0 right square bracket on top C H subscript 3 C H O not stretchy rightwards arrow with left square bracket 0 right square bracket on top C H subscript 3 C O O H  (Aldehyde and acid of same carbon atoms)
    C H subscript 3 C H O H C H subscript 2 not stretchy rightwards arrow with left square bracket O right square bracket on top C H subscript 3 C O C H subscript 3 not stretchy rightwards arrow with left square bracket O right square bracket on top C H subscript 3 C O O H plus H C O O H  (Acid of less carbon atom)
    General
    chemistry-

    Methanol and ethanol can be distinguished by the following:

    C subscript 2 H subscript 5 O H gives iodoform test.

    Methanol and ethanol can be distinguished by the following:

    chemistry-General
    C subscript 2 H subscript 5 O H gives iodoform test.
    General
    chemistry-

    How many structural isomers are known for C subscript 4 H subscript 10 O ?

    4 alcohols (butan-1-ol; butan-2-ol; 2-methyl butan-1-ol; 2-methyl butan-2-ol) and 3 ethers (diethyl ether, methyl-propyl ether and methyl isopropyl ether).

    How many structural isomers are known for C subscript 4 H subscript 10 O ?

    chemistry-General
    4 alcohols (butan-1-ol; butan-2-ol; 2-methyl butan-1-ol; 2-methyl butan-2-ol) and 3 ethers (diethyl ether, methyl-propyl ether and methyl isopropyl ether).