Choose the correct statemet
i)Silicones are the organo Silicon polumers containing `R_(2)` SiO-repeating unit.
ii)these are synthetic compounds containing Si-O-Si
preparation :These are formed by the hydrolysis of chlorosilanes.
iii)Methyl chloride reacts withSilicon at high temperature in presence of copper catalyst to form various types of methyl subsituted chlorosilane of formula `MeSiCl_(2),Me_(2)SiCl_(2),Me_(2)SiCl` With small amount `Me_(4)Si` .
Choose the correct statemet
i)Silicones are the organo Silicon polumers containing `R_(2)` SiO-repeating unit.
ii)these are synthetic compounds containing Si-O-Si preparation :These are formed by the hydrolysis of chlorosilanes.
iii)Methyl chloride reacts withSilicon at high temperature in presence of copper catalyst to form various types of methyl subsituted chlorosilane of formula `MeSiCl_(2),Me_(2)SiCl_(2),Me_(2)SiCl` With small amount `Me_(4)Si` .
i)Silicones are the organo Silicon polumers containing `R_(2)` SiO-repeating unit.
ii)these are synthetic compounds containing Si-O-Si preparation :These are formed by the hydrolysis of chlorosilanes.
iii)Methyl chloride reacts withSilicon at high temperature in presence of copper catalyst to form various types of methyl subsituted chlorosilane of formula `MeSiCl_(2),Me_(2)SiCl_(2),Me_(2)SiCl` With small amount `Me_(4)Si` .
Text Solution
Verified by Experts
`to` Silicones are the organo Silicon polymers containing `R_(2)` SiO-repeating unit.
Preparation :These are formed by the hydrolysis of chlorosilanes
`to` Methyl chloride reacts with silicon at high temperature in presence of copper catalyst to form various types of methyl substitured chlorosilane of formula `MeSiCl_(2),Me_(2)SiCl_(2),Me_(2)SiCl` With small amount `Me_(4)Si` .
`to` Hydrolysis of dimethyl dichloro silane followed by condensation .Polymerisation forms a stright chain polymer (Silicone)(Me =`CH_(3)` -Group).
`2CH_(3)CV+Sioverset(Cu)underset(573K)to(CH_(3))_(2)SiCl_(2)overset(+2H_(2)O)underset(-2HCl)to(CH_(3))_(2)Si(OH)_(2)`
uses of Silicones:
`to` These are used in surgical and cosmetic plants.
`to` These are used in preparation of Silicons rubbers.
`to` These are used in preparing water proof clothes and papers.
`to` These are used as insularos.
`to` These are used in paints and enamels.
Preparation :These are formed by the hydrolysis of chlorosilanes
`to` Methyl chloride reacts with silicon at high temperature in presence of copper catalyst to form various types of methyl substitured chlorosilane of formula `MeSiCl_(2),Me_(2)SiCl_(2),Me_(2)SiCl` With small amount `Me_(4)Si` .
`to` Hydrolysis of dimethyl dichloro silane followed by condensation .Polymerisation forms a stright chain polymer (Silicone)(Me =`CH_(3)` -Group).
`2CH_(3)CV+Sioverset(Cu)underset(573K)to(CH_(3))_(2)SiCl_(2)overset(+2H_(2)O)underset(-2HCl)to(CH_(3))_(2)Si(OH)_(2)`
uses of Silicones:
`to` These are used in surgical and cosmetic plants.
`to` These are used in preparation of Silicons rubbers.
`to` These are used in preparing water proof clothes and papers.
`to` These are used as insularos.
`to` These are used in paints and enamels.
|
Topper's Solved these Questions
THE P-BLOCK ELEMENTS GROUP-14
VIKRAM PUBLICATION ( ANDHRA PUBLICATION)|Exercise SHORT ANSWER QUESTIONS|15 VideosTHE P-BLOCK ELEMENTS GROUP-13
VIKRAM PUBLICATION ( ANDHRA PUBLICATION)|Exercise Long Answer Questions|3 VideosTHE S-BLOCK ELEMENTS
VIKRAM PUBLICATION ( ANDHRA PUBLICATION)|Exercise LONG ANSWER QUESTIONS |12 Videos
Similar Questions
Explore conceptually related problems
Iodine titrations: Compounds containing iodine are widely used in titrations, commonly known as iodine titration. It is of two kinds: (i) lodometric titrations (ii) lodimetric titrations. (i) lodometric titrations : It is nothing but an indirect method of estimating the iodine. In this type of titration, an oxidising agent is made to react with excess of KI, in acidic medium or, basic medium in which I_2 oxidises into L. Now the liberated I_2 can be titrated with Na_(2)S_(2)O_3 . solution. KI overset("Oxidising Agent")rarrI_(2)overset(Na_(2).S_(2)O_(3)//H^(+))rarrI^(-)+Na_(2)S_(4)O_6 Although solid I_2 is black and insoluble in water, but it converts into soluble I_3 ions underset("Black")(I_2(s))+IhArrunderset("Dark brown")(I_3^(-)) Starch is used as indicator near the end point or equivalence point. Even small amount of I_2 molecules, gives blue colour with starch. The completion of the reaction can be detected when blue colour disappears at the and point. In iodimetric titration, the strength of reducing agent is determined by reacting it with I_2 A solution containing Cu^(+2) and C_(2)O_(4)^(-2) ions M which on titration with M/10 KMnO_4 requires 50 mL. The resulting solution is neutralized with K_(2)CO_(3) then treated with excess of KI. M The liberated I_2 required 25 mL M/10 Na_(2)S_(2)O_3 in acidic solution, then what is the difference of the number of m mole of Cu^(+2) and C_(2)O_(4)^(-2) ions in the solution ?
Birch reduction : Birch reduction involves controlled reduction of alkynes & atomic compounds in the presence of alkali metals & alcohol. It provides a method to sterospecifically prepare alkenes of E-configuration. R -C -= C -R overset(M, EtOH)to The characteristic type of reaction of alkynes is electrophilic addition reaction like alkenes. The alkynes show various reactions such as halagenation, hydration, hydrogenation etc... 0.405g sample of hydrocarbon occupies 229.54ml at 100^(@)C & 1 atm pressure. It decolouses KMnO_4 & Br_2 water when it reacts with dil, H_2SO_4 under appropriate conditions methyl ethyl, ketone is formed. The hydrocarbon exists in ( structural isomer )
Knowledge Check
Which of the following statements are correct? i) Boron reacts with concentrated HNO_(3) to form nitric oxide and boric acid ii) Boron reacts with fused NaOH to form H_(2)O_(2) and boric acid iii) Boron reacts with SiO_(2) to form Si and B_(2)O_(3)
Which of the following statements are correct? i) Boron reacts with concentrated HNO_(3) to form nitric oxide and boric acid ii) Boron reacts with fused NaOH to form H_(2)O_(2) and boric acid iii) Boron reacts with SiO_(2) to form Si and B_(2)O_(3)
A
i and ii
B
i, ii and iii
C
ii and iii
D
i and iii
Observe the following statements regarding C_(60) . i. All carbons are sp^(2) - hybridised. ii. It contains 12 rings of five carbons each and 20 rings of six carbons each. iii. It is a non-aromatic compound. iv. It is pure form of carbon. v. C-C bond lengths in it are 143.5 and 138.5 pm. vi. It is prepared by heating graphite in an electric arc in the presence of oxygen. The correct statements are
Observe the following statements regarding C_(60) . i. All carbons are sp^(2) - hybridised. ii. It contains 12 rings of five carbons each and 20 rings of six carbons each. iii. It is a non-aromatic compound. iv. It is pure form of carbon. v. C-C bond lengths in it are 143.5 and 138.5 pm. vi. It is prepared by heating graphite in an electric arc in the presence of oxygen. The correct statements are
A
i, ii, iii, iv, v
B
i, ii, iii, iv, v only
C
i, ii, iii, iv, vi only
D
i, ii, iii only
Iodine titrations: Compounds containing iodine are widely used in titrations, commonly known as iodine titration. It is of two kinds: (i) lodometric titrations (ii) lodimetric titrations. (i) lodometric titrations : It is nothing but an indirect method of estimating the iodine. In this type of titration, an oxidising agent is made to react with excess of KI, in acidic medium or, basic medium in which I_2 oxidises into L. Now the liberated I_2 can be titrated with Na_(2)S_(2)O_3 . solution. KI overset("Oxidising Agent")rarrI_(2)overset(Na_(2).S_(2)O_(3)//H^(+))rarrI^(-)+Na_(2)S_(4)O_6 Although solid I_2 is black and insoluble in water, but it converts into soluble I_3 ions underset("Black")(I_2(s))+IhArrunderset("Dark brown")(I_3^(-)) Starch is used as indicator near the end point or equivalence point. Even small amount of I_2 molecules, gives blue colour with starch. The completion of the reaction can be detected when blue colour disappears at the and point. In iodimetric titration, the strength of reducing agent is determined by reacting it with I_2 When 214 g of KIO_3 reacts with excess of KI in presence of H^(+) then it produces I_2 Now I_2 is completely reacted with 1 M Na_(2)S_(2)O_3 solution in basic medium, where it converts into SO_4^(-2) ions. Then what volume of Na_(2)S_(2)O_3 is needed to react the end point of the reaction?
Iodine titrations: Compounds containing iodine are widely used in titrations, commonly known as iodine titration. It is of two kinds: (i) lodometric titrations (ii) lodimetric titrations. (i) lodometric titrations : It is nothing but an indirect method of estimating the iodine. In this type of titration, an oxidising agent is made to react with excess of KI, in acidic medium or, basic medium in which I_2 oxidises into L. Now the liberated I_2 can be titrated with Na_(2)S_(2)O_3 . solution. KI overset("Oxidising Agent")rarrI_(2)overset(Na_(2).S_(2)O_(3)//H^(+))rarrI^(-)+Na_(2)S_(4)O_6 Although solid I_2 is black and insoluble in water, but it converts into soluble I_3 ions underset("Black")(I_2(s))+IhArrunderset("Dark brown")(I_3^(-)) Starch is used as indicator near the end point or equivalence point. Even small amount of I_2 molecules, gives blue colour with starch. The completion of the reaction can be detected when blue colour disappears at the and point. In iodimetric titration, the strength of reducing agent is determined by reacting it with I_2 When 214 g of KIO_3 reacts with excess of KI in presence of H^(+) then it produces I_2 Now I_2 is completely reacted with 1 M Na_(2)S_(2)O_3 solution in basic medium, where it converts into SO_4^(-2) ions. Then what volume of Na_(2)S_(2)O_3 is needed to react the end point of the reaction?
A
500 ml
B
800 ml
C
1500 ml
D
750ml
Similar Questions
Explore conceptually related problems
Birch reduction : Birch reduction involves controlled reduction of alkynes & atomic compounds in the presence of alkali metals & alcohol. It provides a method to sterospecifically prepare alkenes of E-configuration. R -C -= C -R overset(M, EtOH)to The characteristic type of reaction of alkynes is electrophilic addition reaction like alkenes. The alkynes show various reactions such as halagenation, hydration, hydrogenation etc... 0.405g sample of hydrocarbon occupies 229.54ml at 100^(@)C & 1 atm pressure. It decolouses KMnO_4 & Br_2 water when it reacts with dil, H_2SO_4 under appropriate conditions methyl ethyl, ketone is formed. The hydrocarbon is
Birch reduction : Birch reduction involves controlled reduction of alkynes & atomic compounds in the preseance of alkali metals & alcohol. It provides a method to sterospecifically prepare alkenes of E- configuration R - C -= C -R overset(M,EtOH)to The characteristic type of reaction of alkynes is electrophilic addition reaction like alkenes. The alkynes show various reactions such as halagenation, hydration, hydrogenation etc... 0.40 5g sample of hydrocarbon occupies 229.54ml at 100^(@)C & 1 atm pressure. It decolouses KMnO_4 & Br_2 water. When it reacts with dil. H_2SO_4 under appropriate conditions methyl ethyl, ketone is formed The molecular formula of the hydrocarbon is
Birch reduction : Birch reduction involves controlled reduction of alkynes & atomic compounds in the preseance of alkali metals & alcohol. It provides a method to sterospecifically prepare alkenes of E- configuration R - C -= C -R overset(M,EtOH)to The characteristic type of reaction of alkynes is electrophilic addition reaction like alkenes. The alkynes show various reactions such as halagenation, hydration, hydrogenation etc... 0.40 5g sample of hydrocarbon occupies 229.54ml at 100^(@)C & 1 atm pressure. It decolouses KMnO_4 & Br_2 water. When it reacts with dil. H_2SO_4 under appropriate conditions methyl ethyl, ketone is formed The hydrocarbon is
Iodine titrations: Compounds containing iodine are widely used in titrations, commonly known as iodine titration. It is of two kinds: (i) lodometric titrations (ii) lodimetric titrations. (i) lodometric titrations : It is nothing but an indirect method of estimating the iodine. In this type of titration, an oxidising agent is made to react with excess of KI, in acidic medium or, basic medium in which I_2 oxidises into L. Now the liberated I_2 can be titrated with Na_(2)S_(2)O_3 . solution. KI overset("Oxidising Agent")rarrI_(2)overset(Na_(2).S_(2)O_(3)//H^(+))rarrI^(-)+Na_(2)S_(4)O_6 Although solid I_2 is black and insoluble in water, but it converts into soluble I_3 ions underset("Black")(I_2(s))+IhArrunderset("Dark brown")(I_3^(-)) Starch is used as indicator near the end point or equivalence point. Even small amount of I_2 molecules, gives blue colour with starch. The completion of the reaction can be detected when blue colour disappears at the and point. In iodimetric titration, the strength of reducing agent is determined by reacting it with I_2 When 79.75 g of CuSO_4 sample containing inert impurity is reacted with KI, the liberated I, is reacted with 50 mL (1M) Na_(2)S_(2)O_3 in basic medium, where it oxidises into SO_(4)^(2-) ions, and I_2 reduces into I^(-) then what will be the % purity of CuSO_4 in sample ? <
Birch reduction : Birch reduction involves controlled reduction of alkynes & atomic compounds in the preseance of alkali metals & alcohol. It provides a method to sterospecifically prepare alkenes of E- configuration R - C -= C -R overset(M,EtOH)to The characteristic type of reaction of alkynes is electrophilic addition reaction like alkenes. The alkynes show various reactions such as halagenation, hydration, hydrogenation etc... 0.40 5g sample of hydrocarbon occupies 229.54ml at 100^(@)C & 1 atm pressure. It decolouses KMnO_4 & Br_2 water. When it reacts with dil. H_2SO_4 under appropriate conditions methyl ethyl, ketone is formed The hydrocarbon exists in (structural isomer)