1.Name the product formed beside soap that is obtaine
d during saponification process.
2.Define Mendeleev’s Periodic Law. Give two advantage s of Mendeleev’s Periodic Table.
3.Why was it necessary to change the basis of classif ication from atomic mass to atomic number. 4.(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.
5.(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?
6.(a) What is hydrogenation? Give one reaction. What is i ts industrial application?
(b) What is esterification?
7.Define soaps? and their cleansing action
8.Why is K more reactive than Li and F more reactive than Cl
9.Give three drawbacks (limitations) and achievements of Mendeleev’s P eriodic Table.
10.Explain double bond and triple bond with help of tw o examples in each case.
11.Write in short, how carbon compounds are named acco rding to IUPAC nomenclature?
12.Explain the following terms:
(a) Emulsifying (b) Substitution reaction (c) Poly merization (d) Saponification (e) Methylated spitit
13.What do you understand by periodicity? Are the prop erties of elements placed in a group same? Illustrate.
14.(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?
(d) Write the names of the compounds
a)2nd aldehyde b) 3rd alkyne
15.Explain why atomic number is more important than at omic weight in determining chemical properties?
16.What is electron affinity? The electron affinity va lues of three elements A, B and C of a group are 324, 295 and 333 kJ mol -1 . Arrange these in increasing order of their atomic numbers.
17.(a) Write the name and symbol of group 17 elements belo nging to second period.
(b) Write electronic configuration of K (19). To which group of periodic table does it belong?
(c) What are substitution reactions? Give one example.
(d) What happens when acetic acid reacts with sodium bi carbonate? Give chemical reaction involved.
18.(a) Name elements of group 2 belonging to 3 rd and 4 th period.
(b) Name the element having highest ionization energy i n periodic table.
(c) Give limitation of Dobereiner’s law of triads.
(d) Why do ionic compounds not conduct electricity in s olid state?
(e) Name the chief ore or iron. Give its formula.
19.Three elements with atomic number 12 and 16 and 17, to which period and group they each b elong, and which two of them will m ake ionic bond
20.An element with atomic number 12 reacts with sulphate, nitrate and phosphate write the formulae of three compounds formed
21.Which is bigger in size Na and Na+
22.Two elements X and Y belong to Group 1 and Group 2 r espectively in the same period. Compare them with respect to:
(a) The number of valence electrons (b) Valency (c) metallic character (d) Size of the atoms (e) Formula of their oxid es and chlorides.
23.Two elements X and Y belongs to group 1 and 2 respe ctively in the same period. Compare them with respect to:
(i)The number of valence electrons (ii) Valency (iii)Metallic character. (iv)Size of the atoms. (v)Formulae of their oxides and chlorides
24.What is homologous series and a functional group
25.Give the s t ruct ur al formulas for
(i) Methyl Ethanote (ii) Ethyl ethanoate
26.The atomic number of an element is 16. Predict its:
(a) valency (b) group number (c) whether it is a me tal of non-metal (d) nature of the oxide formed (e) name of the ele ment.
2.Define Mendeleev’s Periodic Law. Give two advantage s of Mendeleev’s Periodic Table.
3.Why was it necessary to change the basis of classif ication from atomic mass to atomic number. 4.(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.
5.(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?
6.(a) What is hydrogenation? Give one reaction. What is i ts industrial application?
(b) What is esterification?
7.Define soaps? and their cleansing action
8.Why is K more reactive than Li and F more reactive than Cl
9.Give three drawbacks (limitations) and achievements of Mendeleev’s P eriodic Table.
10.Explain double bond and triple bond with help of tw o examples in each case.
11.Write in short, how carbon compounds are named acco rding to IUPAC nomenclature?
12.Explain the following terms:
(a) Emulsifying (b) Substitution reaction (c) Poly merization (d) Saponification (e) Methylated spitit
13.What do you understand by periodicity? Are the prop erties of elements placed in a group same? Illustrate.
14.(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?
(d) Write the names of the compounds
a)2nd aldehyde b) 3rd alkyne
15.Explain why atomic number is more important than at omic weight in determining chemical properties?
16.What is electron affinity? The electron affinity va lues of three elements A, B and C of a group are 324, 295 and 333 kJ mol -1 . Arrange these in increasing order of their atomic numbers.
17.(a) Write the name and symbol of group 17 elements belo nging to second period.
(b) Write electronic configuration of K (19). To which group of periodic table does it belong?
(c) What are substitution reactions? Give one example.
(d) What happens when acetic acid reacts with sodium bi carbonate? Give chemical reaction involved.
18.(a) Name elements of group 2 belonging to 3 rd and 4 th period.
(b) Name the element having highest ionization energy i n periodic table.
(c) Give limitation of Dobereiner’s law of triads.
(d) Why do ionic compounds not conduct electricity in s olid state?
(e) Name the chief ore or iron. Give its formula.
19.Three elements with atomic number 12 and 16 and 17, to which period and group they each b elong, and which two of them will m ake ionic bond
20.An element with atomic number 12 reacts with sulphate, nitrate and phosphate write the formulae of three compounds formed
21.Which is bigger in size Na and Na+
22.Two elements X and Y belong to Group 1 and Group 2 r espectively in the same period. Compare them with respect to:
(a) The number of valence electrons (b) Valency (c) metallic character (d) Size of the atoms (e) Formula of their oxid es and chlorides.
23.Two elements X and Y belongs to group 1 and 2 respe ctively in the same period. Compare them with respect to:
(i)The number of valence electrons (ii) Valency (iii)Metallic character. (iv)Size of the atoms. (v)Formulae of their oxides and chlorides
24.What is homologous series and a functional group
25.Give the s t ruct ur al formulas for
(i) Methyl Ethanote (ii) Ethyl ethanoate
26.The atomic number of an element is 16. Predict its:
(a) valency (b) group number (c) whether it is a me tal of non-metal (d) nature of the oxide formed (e) name of the ele ment.
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