Description : How do you make 10 percent FeCl3?
Last Answer : Dissolve 10 g anhydrous iron(III) chloride in distilled water.
Description : Alcoholic OH) group can be identified by : (1) Tolien's Reagent Test (2) Esterification Test (3) FeCl3 Test (4) Ozonolysis Reaction
Last Answer : (3) FeCl3 Test Explanation: As phenol is an aromatic alcohol, so FeCl3 test is a test for alcohol and esterificaton test is also a test for alcohol. The ferric chloride test is used to determine the presence or absence of phenols in a given sample (for instance natural phenols in a plant extract).
Description : What happens when freshly precipitated Fe (OH)3 is shaken with a little amount of dilute solution of FeCl3 ?
Last Answer : Ans. It causes peptization leading to the formation of a positively charged sol of Fe (OH)3
Description : Acetophenone reacts with Br2 in the presence of FeCl3 to form : (a) m-Bromoacetophenone (b) m-Dibromobenzene (c) o- + p-Bromoacetophenone (d) p-Dibromobenzene
Last Answer : m-Bromoacetophenone
Description : When phenol is treated with neutral FeCl3 solution, it develops (a) Violet color (b) Yellow color (c) Green color (d) Nothing happens
Last Answer : Violet color
Description : Iodobenzene can be prepared by (a) treating chlorobenzene with I2 using FeCl3 catalyst. (b) treating phenol with I2 in NaOH solution. (c) treating benzenediazonium chloride with KI (d) treating benzene with CH3I using AlCl3 catalyst
Last Answer : treating benzenediazonium chloride with KI
Description : Chlorobenzene can be prepared by treatment of aniline with (a) Cuprous chloride (b) Chlorine in the presence of UV light (c) Nitrous acid followed by treatment with CuCl (d) Chlorine in the presence of FeCl3
Last Answer : Nitrous acid followed by treatment with CuCl
Description : Nitrobenzene reacts with Br2 in the presence of FeCl3 to give (a) o-chloronitrobenzene (b) o-bromonitrobenzene (c) m-chloronitrobenzene (d) m-bromonitrobenzene
Last Answer : m-bromonitrobenzene
Description : Which of the following reagents is most suitable for preparing chlorobenzene from benzene? (a) Aqueous chlorine (b) Chlorine in the presence of ultraviolet light (c) Chlorine in acetic acid (d) Chlorine in the presence of FeCl3
Last Answer : Chlorine in the presence of FeCl3
Description : p-Nitrotoluene on treatment with chlorine in the presence of FeCl3 gives (a) m-Chlorotoluene (b) 2-Chloro-4-nitrotoluene (c) p-Chlorotoluene (d) 2-Nitro-4-chlorotoluene
Last Answer : 2-Chloro-4-nitrotoluene
Description : Benzene reacts with chlorine in the presence of FeCl3 catalyst to form (a) Hexachlorobenzene (b) Chlorobenzene (c) Hexachlorocyclohexane (d) Benzyl chloride
Last Answer : Chlorobenzene
Description : Which of the following agents is used in order to make benzene react with concentrated nitric acid to give nitrobenzene? (a) Concentrated H2SO4 (b) FeCl3 catalyst (c) Lindlar's catalyst (d) Ultraviolet light
Last Answer : Concentrated H2SO4
Description : What purpose does FeCl3 serve in the electrophilic aromatic substitution reaction between chlorine and benzene? (a) It serves as a radical initiator to produce the chlorine radical needed to propagate the ... by reacting with the Cl2 and thereby activates it toward attack by benzene's π electrons.
Last Answer : It serves as a Lewis acid catalyst by reacting with the Cl2 and thereby activates it toward attack by benzene’s π electrons.
Description : Alcoholic (– OH) group can be identified by : (1) Tollen's Reagent Test (2) Esterification Test (3) FeCl3 Test (4) Ozonolysis Reaction
Last Answer : FeCl3 Test
Description : Pick out the wrong statement. (A) A soft magnetic material should have high permeability and small area of hysteresis loop (B) Poisson's ratio of high melting point metals is more than unity (C) ... less than 185°C (D) Steel produced by B.O.F process is ideally suited for manufacturing flat product
Last Answer : Option B
Description : Why does the temperature of a substance remain constant during its melting point or boiling point? -Maths 9th
Last Answer : The extra heat supplied to the boiling water is used in the vaporization of a liquid, which is known as the latent heat of vaporization. That's why the temperature of a substance remains constant during its melting or boiling.
Last Answer : The temperature of a substance remains constant during melting and boiling points till the completion of melting and boiling. It is because substance makes use of latent heat of fusion ... between particles of liquid to change into vapours during boiling. Therefore, temperature remains constant.
Description : Which of the following has highest melting point? Ni, Fe, Pt, W. -Chemistry 9th
Last Answer : i think all are equal
Description : Which substance does not have a melting point? -General Knowledge
Last Answer : The answer is 'Glass'
Last Answer : Mercury exists in liquid state hence, it has no melting point.
Description : What is the melting point of titanium ?
Last Answer : Titanium has a melting point of 1677 degrees Celsius.
Description : What is the melting point of scandium ?
Last Answer : Scandium has a melting point of 1541 degrees Celsius.
Description : What is the melting point of helium ?
Last Answer : The melting point of helium is minus 272 degrees Celsius.
Description : What is the melting point of hydrogen ?
Last Answer : The melting point of hydrogen is minus 259 degrees Celsius.
Description : What is the melting point of calcium ?
Last Answer : The melting point of calcium is 848 degrees Celsius.
Description : What is the melting point of potassium ?
Last Answer : The melting point of potassium is 64 degrees Celsius.
Description : What is the melting point of argon ?
Last Answer : Argon melting point - 189 degrees Celsius.
Description : What is the melting point of chlorine ?
Last Answer : Melting point of chlorine - 101 degree Celsius.
Description : What is the melting point of sulfur ?
Last Answer : The melting point of sulfur is 113 degrees Celsius.
Description : What is the melting point of phosphorus ?
Last Answer : The melting point of phosphorus is 44 degrees Celsius.
Description : What is the melting point of silicon ?
Last Answer : Silicon has a melting point of 1420 degrees Celsius.
Description : What is the melting point of aluminum ?
Last Answer : Aluminum has a melting point of 660 degrees Celsius.
Description : What is the melting point of magnesium ?
Last Answer : Magnesium has a melting point of 650 degrees Celsius.
Description : What is the melting point of sodium ?
Last Answer : The melting point of sodium is 98 degrees Celsius.
Description : What is the melting point of neon ?
Last Answer : Neon melting point - 249 degrees Celsius.
Description : What is the melting point of fluorine ?
Last Answer : Melting point of fluorine - 220 সেল C.
Description : What is the melting point of oxygen ?
Last Answer : Melting point of oxygen - 210 degree Celsius.
Description : What is the melting point of carbon ?
Last Answer : The melting point of carbon is 3500 degrees Celsius.
Description : What is the melting point of boron ?
Last Answer : Boron has a melting point of 2300 degrees Celsius.
Description : What is the melting point of beryllium ?
Last Answer : The melting point of beryllium is 1283 degrees Celsius.
Description : What is the melting point of lithium ?
Last Answer : Lithium has a melting point of 179 degrees Celsius.
Description : What is the melting point line ?
Last Answer : The straight line found at the temperature of melting point is called melting point line.
Description : What is the melting point of pure sulfur ?
Last Answer : The melting point of pure sulfur is 119 স C.
Description : What is the melting point of urea ?
Last Answer : The melting point of urea is 133 degrees Celsius.
Description : What is the melting point of ice or at what temperature does ice melt into water ?
Last Answer : : The melting point of Berber becomes ice water at a temperature of 0 সেল C or 0 সেল C.
Description : What is the melting point ?
Last Answer : : The temperature at which a solid substance turns into a liquid under normal pressure ( 1atm) is called the melting point of that substance.
Description : What is the melting point of lead ?
Last Answer : Melting point [ √ ] 600 . 61 See K ( 326.48 ° C, 621.43 ° F) here.
Description : What is the melting point of sugar ?
Last Answer : The melting point of sugar is 160 degrees.
Description : What is the melting point of brass ?
Last Answer : The melting point of brass is 800 to 1000 degrees.