This are past JEE fill in the blank question exam questions on Inorganic chemistry
1. Sulphur acts as ___________ agent in vulcanization of rubber. (1989)
2. The basicity of phosphorus acid (H3PO3) is ____________ . (1990)
3. In P4O10, the number of oxygen atoms bonded to each phosphorus atom is _________ . (1992)
4. The lead chamber process involves oxidation of SO2 by atmospheric oxygen under the influence of __________ as catalyst. (1992)
5. Ca2+ has a smaller ionic radius than K+ because it has __________- . (1993)
6. The formula of the deep red liquid formed on warming dichromate with KCl in concentrated sulphuric acid is ______________ . (1993)
7. The two types of bonds present in B2H6 are covalent and __________ . (194).
8. The type of magnetism exhibited by [Mn(H2O)6] 2+ is ________________ . (1994)
9. One recently discovered allotrope of carbon (e.g., C60) is commonly known as _________ . (1994)
10. Among PCl3, CH3+, NH2-, and NF3, ___________ is least reactive towards water. (1997)
11. A solution of sodium in liquid ammonia at -33˚C conducts electricity. On cooling, the conductivity of this solution ______________ .
12. When an aqueous solution of sodium fluoride is electrolysed, the gas liberated at the anode is ___________ .
13. Silver jewellery items tarnish slowly in the air due to their reaction with ___________. (1997).
14. Compounds that formally contain Pb4+ are easily reduced to Pb2+. The stability of the lower oxidation state is due to _____ . (1997)
1. Sulphur acts as ___________ agent in vulcanization of rubber. (1989)
2. The basicity of phosphorus acid (H3PO3) is ____________ . (1990)
3. In P4O10, the number of oxygen atoms bonded to each phosphorus atom is _________ . (1992)
4. The lead chamber process involves oxidation of SO2 by atmospheric oxygen under the influence of __________ as catalyst. (1992)
5. Ca2+ has a smaller ionic radius than K+ because it has __________- . (1993)
6. The formula of the deep red liquid formed on warming dichromate with KCl in concentrated sulphuric acid is ______________ . (1993)
7. The two types of bonds present in B2H6 are covalent and __________ . (194).
8. The type of magnetism exhibited by [Mn(H2O)6] 2+ is ________________ . (1994)
9. One recently discovered allotrope of carbon (e.g., C60) is commonly known as _________ . (1994)
10. Among PCl3, CH3+, NH2-, and NF3, ___________ is least reactive towards water. (1997)
11. A solution of sodium in liquid ammonia at -33˚C conducts electricity. On cooling, the conductivity of this solution ______________ .
12. When an aqueous solution of sodium fluoride is electrolysed, the gas liberated at the anode is ___________ .
13. Silver jewellery items tarnish slowly in the air due to their reaction with ___________. (1997).
14. Compounds that formally contain Pb4+ are easily reduced to Pb2+. The stability of the lower oxidation state is due to _____ . (1997)
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