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Inorganic Chemistry Past JEE Fill Blanks QuestionsFill in the
blanks
1. The increase in solubility of iodine in an aqueous solution
of potassium iodide is due to the formation of ___________ .
(1982)
2. Galvanization of iron denotes coating with ___________
.(1983)
3. If metal ions of group III are precipitated by NH4Cl and
NH4OH without prioroxidation by conc. HNO3 ___________ in not
completely precipitated. (1984)
4. Sodium dissolved in liquid ammonia conducts electricity
because _________. (1985)
5. Hydrogen gas is liberated by the action of aluminum with
concentrated solution of ___________. (1987)
6. Silver chloride is sparingly soluble in water because its
lattice energy is greater than __________ energy. (1987)
7. _______ phosphorus is reactive because of its highly strained
tetrahedral structure.
8. In extractive metallurgy of zinc, partial fusion of ZnO with
coke is called _______ and reduction of the ore to the molten metal
is called ____________ .(smelting, calcining, roasting, sintering)
(1988)
9. The salts _________ and _______________ are
isostructural.(FeSO4.7H2O; CuSO4.5H2O; MnSO4.4H2O; ZnSO4.7H2O)
10. ______________ acid gives hypo ____________
ion.(hydrobromic, hypobromous, perbromic, bromide, bromite,
perbromate) (1988)
11. Sulphur acts as ___________ agent in vulcanization of
rubber. (1989)
12. The basicity of phosphorus acid (H3PO3) is ____________ .
(1990)
13. In P4O10, the number of oxygen atoms bonded to each
phosphorus atom is _________ . (1992)
14. The lead chamber process involves oxidation of SO2 by
atmospheric oxygen under the influence of __________ as catalyst.
(1992)
15. Ca2+ has a smaller ionic radius than K+ because it has
__________- . (1993)
16. The formula of the deep red liquid formed on warming
dichromate with KCl inconcentrated sulphuric acid is ______________
. (1993)
17. The two types of bonds present in B2H6 are covalent and
__________ . (194).
18. The type of magnetism exhibited by [Mn(H2O)6] 2+ is
________________ . (1994)
19. One recently discovered allotrope of carbon (e.g., C60) is
commonly known as_________ . (1994)
20. Among PCl3, CH3+, NH2-, and NF3, ___________ is least
reactive towards water. (1997)
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21. A solution of sodium in liquid ammonia at -33?C conducts
electricity. On cooling, the conductivity of this solution
______________ .
22. When an aqueous solution of sodium fluoride is electrolysed,
the gas liberated at the anode is ___________ .
23. Silver jewellery items tarnish slowly in the air due to
their reaction with___________. (1997).
24. Compounds that formally contain Pb4+ are easily reduced to
Pb2+. The stability of the lower oxidation state is due to _____ .
(1997)
answers some time laterPosted by KVSSNrao at 2:34 AM No
comments:Labels: Fill-in-the blanks, Inorganic chemistryInorganic
Chemistry Past JEE Fill Blanks QuestionsFill in the blanks
1. The increase in solubility of iodine in an aqueous solution
of potassium iodide is due to the formation of ___________ .
(1982)
2. Galvanization of iron denotes coating with ___________
.(1983)
3. If metal ions of group III are precipitated by NH4Cl and
NH4OH without prior
oxidation by conc. HNO3 ___________ in not completely
precipitated. (1984)
4. Sodium dissolved in liquid ammonia conducts electricity
because _________. (1985)
5. Hydrogen gas is liberated by the action of aluminum with
concentrated solution of ___________. (1987)
6. Silver chloride is sparingly soluble in water because its
lattice energy is greater than __________ energy. (1987)
7. _______ phosphorus is reactive because of its highly strained
tetrahedral structure.
8. In extractive metallurgy of zinc, partial fusion of ZnO with
coke is called _______ and reduction of the ore to the molten metal
is called ____________ .(smelting, calcining, roasting, sintering)
(1988)
9. The salts _________ and _______________ are
isostructural.(FeSO4.7H2O; CuSO4.5H2O; MnSO4.4H2O; ZnSO4.7H2O)
10. ______________ acid gives hypo ____________
ion.(hydrobromic, hypobromous, perbromic, bromide, bromite,
perbromate) (1988)
11. Sulphur acts as ___________ agent in vulcanization of
rubber. (1989)
12. The basicity of phosphorus acid (H3PO3) is ____________ .
(1990)
13. In P4O10, the number of oxygen atoms bonded to each
phosphorus atom is _________ . (1992)
14. The lead chamber process involves oxidation of SO2 by
atmospheric oxygen under the influence of __________ as catalyst.
(1992)
15. Ca2+ has a smaller ionic radius than K+ because it has
__________- . (1993)
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16. The formula of the deep red liquid formed on warming
dichromate with KCl inconcentrated sulphuric acid is ______________
. (1993)
17. The two types of bonds present in B2H6 are covalent and
__________ . (194).
18. The type of magnetism exhibited by [Mn(H2O)6] 2+ is
________________ . (1994)
19. One recently discovered allotrope of carbon (e.g., C60) is
commonly known as_________ . (1994)
20. Among PCl3, CH3+, NH2-, and NF3, ___________ is least
reactive towards water. (1997)
21. A solution of sodium in liquid ammonia at -33?C conducts
electricity. On cooling, the conductivity of this solution
______________ .
22. When an aqueous solution of sodium fluoride is electrolysed,
the gas liberated at the anode is ___________ .
23. Silver jewellery items tarnish slowly in the air due to
their reaction with___________. (1997).
24. Compounds that formally contain Pb4+ are easily reduced to
Pb2+. The stabili
ty of the lower oxidation state is due to _____ . (1997)
answers some time laterPosted by KVSSNrao at 2:34 AM No
comments:Labels: Fill-in-the blanks, Inorganic chemistryInorganic
Chemistry - Past JEE - True or False Type questionsState whether
the following statements are true or false
1. Red phosphorus is less volatile than white phosphorus because
the former hasa tetrahedral structure. (1982)
2. MgCl2.6H2O on heating gives anhydrous MgCl2. (1982)
3. When PbO2 reacts with a dilute acid, it gives hydrogen
peroxide. (1982)
4. Copper metal reduces Fe2+ in an acid medium. (1982)
5. Silver fluoride is fairly soluble in water. (1982)
6. Dilute HCl oxidizes metallic Fe to Fe2+. (1983)
7. In an aqueous solution chlorine is a stronger oxidizing agent
than fluorine.(1984)
8. Silver chloride is more soluble in very concentrated sodium
chloride solutionthan in pure water. (1984)
9. Solubility of sodium hydroxide increases with increase in
temperature. (1985)
10. Sodium when burnt in excess of oxygen gives sodium oxide.
(1987).
11. Both potassium ferrocyanide and potassium ferricyanide are
diamagnetic. (1989)
12. Cu+ disproportionates to Cu2+. (1991)
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13. Nitrous oxide, though an odd electron molecule, is
diamagnetic in liquid state. (1991)
14. Diamond is harder than graphite. (1993)
15. The basic nature of the hydroxides of Group 13 (Gr. III B)
decreases progressively down the group. (1993)
16. The tendency for catenation is much higher for C than for
Si. (1993)
17. HBr is stronger acid than HI because of hydrogen bonding.
(1993)
Answers sometime later
