This are past JEE fill in the blank question
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)
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)
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