1 Name the process of converting vegetable oil to vegetable ghee
2. What are isomers? “Isomers of the first three members of alkane series are not possible”. Give reason to justify this statement and draw structures of two isomers of butane, three isomers of pentane
3.An organic compound ‘X’ is a liquid at room temperature. It is also a very good solvent and has the molecular formula C 2 H 6 O. on oxidation ‘X’ gives ‘Y’ which give, break effervescence on reacting with NaHCO 3 . X reacts with Y in the presence of c onc . H 2 SO 4 to give another compound ‘Z’ which has a pleasant smell. Identify X , Y and Z. also write chemical equations to show the formation of Y and Z.
4.a) State two main reasons for carbon forming a very large number of compounds.
b) Give reason why carbon forms compound
(i) Namely by Covalent bonding
(ii) Having low melting and boiling points
c) What happens when (Write chemical equations of the reactions)
(i) A piece of sodium metal is added to ethanol.
(ii) Ethanoic acid reacts with sodium hydroxide
5.Give five differences between diamond and graphite. (a) A compound X is formed by the reaction of carboxyli c acid having the molecular formula C 2 H 4 O 2 and alcohol (Y) in the presence of conc. H 2 SO 4 . The same carboxylic acid is obtained by the oxidation of alcohol (Y). Name the compounds X and Y. Give the chemical equation for the reaction
6.. (a) Which hydrocarbons burn with
(i) non-sooty blue flame
ii) sooty yellow flame
(b) What happens when methane reacts with chlorine?
(c) What is rectified spirit?
(d) Why does soap not work in hard water?
(e) What is glacial acid?
7. Explain the following terms:
(a) Emulsifying
(b) Substitution reaction
(c) Poly merization
(d) Saponification
(e) Methylated spitit
8.Explain the cleansing action of soaps and Detergent
9.Name the second member of alkyne, alkane and Alkene family Give their structure?
10.(a) Name the gas evolved during fermentation process ?
(b) What role is played by yeast in the conversion of cane sugar (C 12 H 22 O 11 ) to ethanol?
(c) How may the following be obtained from pure eth anol? Express chemical reactions by the chemical equations.
(i) Sodium ethoxide (ii) Ethyl ethanoate (iii) Ethanal Or
(a) Why does carbon form largest number of compounds?
(b) Why are some of these are called saturated and othe r unsaturated compounds?
(c) Which of these two is more reactive?
11.a)What are hydrocarbons? Give examples.
(b) Give the structural differences between saturated and unsaturated hydrocarbons with two examples each.
(c)What is a functional group? Give examples of four different functional groups.
12. Name the reaction which is commonly used in the conversion of vegetable oils to fats. Explain the reaction involved in detail.
13.Draw structure of the following 1)pentanol, 2)methanoic acid 3)hexanal 4)pentanone 5)hexene 6)methanol
14.Catenation is the ability of an atom to form bonds with other atoms of the same
element. It is exhibited by both carbon and silicon. Compare the ability of catenation of the two elements. Give reasons.
15.A compound X is formed by the reaction of a carboxylic acid C2H4O2 and an alcohol in presence of a few drops of H2SO4
.The alcohol on oxidation with alkaline KMnO4 followed by acidification gives the same carboxylic acid as used in this reaction. Give the names and structures of (a) carboxylic acid, (b)alcohol and (c) the compound X. Also, write the reaction.
16.a)give chemical test to distinguish between saturated and unsaturated hydrocarbons
b)draw electron dot structure of cyclopentane and benzene
c)what is the role of sulphuric acid in esterification
d)What is rectified spirit
e)Dilute alkaline KMnO4 solution is
17.a)what is the by product of soap industry
b)Give an example of soap with structure formula
c)how many covalent bonds are their in pentene
d) Which organic compound is added to make ethanol unfit for drinking purposes?
18.a) An aldehyde derived from ethane
(b) Ketone derived from butane
(c) Compound obtained by the oxidation of ethanol by chromic anhydride
d)name the gas evolved during fermentation
e)What is the need for denatured alcohol
19.a)The odour of acetic acid resembles that of
b)diamond is a not a good conductor but graphite is.give reason
c)What is the IUPAC name of C2H5COOH.
d)IUPAC name of first member of homologous series of ketones is
e)Give the structural formula for MEthyl ethanote
20.An organic compound A is widely used as a preservative in pickles and has a
molecular formula C2H4O2. This compound reacts with ethanol to form a sweet smelling compound B.
(a) Identify the compound A.
(b) Write the chemical equation for its reaction with ethanol to form compound B.
(c) How can we get compound A back from B.
(d) Name the process and write the corresponding chemical equation.
(e) Which gas is produced when compound A reacts with washing soda? Write the chemical equation?
21. (i) What are the two properties of carbon which lead to he formation of a large number of
carbon compounds?
(ii) What is a homologous series? Explain with an example. By how many carbon atoms and hydrogen atoms do any two adjacent homologous differ?
(iii) Give a test that can be used to differentiate chemically between butter and cooking oil.
2. What are isomers? “Isomers of the first three members of alkane series are not possible”. Give reason to justify this statement and draw structures of two isomers of butane, three isomers of pentane
3.An organic compound ‘X’ is a liquid at room temperature. It is also a very good solvent and has the molecular formula C 2 H 6 O. on oxidation ‘X’ gives ‘Y’ which give, break effervescence on reacting with NaHCO 3 . X reacts with Y in the presence of c onc . H 2 SO 4 to give another compound ‘Z’ which has a pleasant smell. Identify X , Y and Z. also write chemical equations to show the formation of Y and Z.
4.a) State two main reasons for carbon forming a very large number of compounds.
b) Give reason why carbon forms compound
(i) Namely by Covalent bonding
(ii) Having low melting and boiling points
c) What happens when (Write chemical equations of the reactions)
(i) A piece of sodium metal is added to ethanol.
(ii) Ethanoic acid reacts with sodium hydroxide
5.Give five differences between diamond and graphite. (a) A compound X is formed by the reaction of carboxyli c acid having the molecular formula C 2 H 4 O 2 and alcohol (Y) in the presence of conc. H 2 SO 4 . The same carboxylic acid is obtained by the oxidation of alcohol (Y). Name the compounds X and Y. Give the chemical equation for the reaction
6.. (a) Which hydrocarbons burn with
(i) non-sooty blue flame
ii) sooty yellow flame
(b) What happens when methane reacts with chlorine?
(c) What is rectified spirit?
(d) Why does soap not work in hard water?
(e) What is glacial acid?
7. Explain the following terms:
(a) Emulsifying
(b) Substitution reaction
(c) Poly merization
(d) Saponification
(e) Methylated spitit
8.Explain the cleansing action of soaps and Detergent
9.Name the second member of alkyne, alkane and Alkene family Give their structure?
10.(a) Name the gas evolved during fermentation process ?
(b) What role is played by yeast in the conversion of cane sugar (C 12 H 22 O 11 ) to ethanol?
(c) How may the following be obtained from pure eth anol? Express chemical reactions by the chemical equations.
(i) Sodium ethoxide (ii) Ethyl ethanoate (iii) Ethanal Or
(a) Why does carbon form largest number of compounds?
(b) Why are some of these are called saturated and othe r unsaturated compounds?
(c) Which of these two is more reactive?
11.a)What are hydrocarbons? Give examples.
(b) Give the structural differences between saturated and unsaturated hydrocarbons with two examples each.
(c)What is a functional group? Give examples of four different functional groups.
12. Name the reaction which is commonly used in the conversion of vegetable oils to fats. Explain the reaction involved in detail.
13.Draw structure of the following 1)pentanol, 2)methanoic acid 3)hexanal 4)pentanone 5)hexene 6)methanol
14.Catenation is the ability of an atom to form bonds with other atoms of the same
element. It is exhibited by both carbon and silicon. Compare the ability of catenation of the two elements. Give reasons.
15.A compound X is formed by the reaction of a carboxylic acid C2H4O2 and an alcohol in presence of a few drops of H2SO4
.The alcohol on oxidation with alkaline KMnO4 followed by acidification gives the same carboxylic acid as used in this reaction. Give the names and structures of (a) carboxylic acid, (b)alcohol and (c) the compound X. Also, write the reaction.
16.a)give chemical test to distinguish between saturated and unsaturated hydrocarbons
b)draw electron dot structure of cyclopentane and benzene
c)what is the role of sulphuric acid in esterification
d)What is rectified spirit
e)Dilute alkaline KMnO4 solution is
17.a)what is the by product of soap industry
b)Give an example of soap with structure formula
c)how many covalent bonds are their in pentene
d) Which organic compound is added to make ethanol unfit for drinking purposes?
18.a) An aldehyde derived from ethane
(b) Ketone derived from butane
(c) Compound obtained by the oxidation of ethanol by chromic anhydride
d)name the gas evolved during fermentation
e)What is the need for denatured alcohol
19.a)The odour of acetic acid resembles that of
b)diamond is a not a good conductor but graphite is.give reason
c)What is the IUPAC name of C2H5COOH.
d)IUPAC name of first member of homologous series of ketones is
e)Give the structural formula for MEthyl ethanote
20.An organic compound A is widely used as a preservative in pickles and has a
molecular formula C2H4O2. This compound reacts with ethanol to form a sweet smelling compound B.
(a) Identify the compound A.
(b) Write the chemical equation for its reaction with ethanol to form compound B.
(c) How can we get compound A back from B.
(d) Name the process and write the corresponding chemical equation.
(e) Which gas is produced when compound A reacts with washing soda? Write the chemical equation?
21. (i) What are the two properties of carbon which lead to he formation of a large number of
carbon compounds?
(ii) What is a homologous series? Explain with an example. By how many carbon atoms and hydrogen atoms do any two adjacent homologous differ?
(iii) Give a test that can be used to differentiate chemically between butter and cooking oil.
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