Hydrogen
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Hydrogen
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1. The dielectric constant of H 2O is 80Theelectrostatic force of attraction between Na + andCl-“ will be [1994]
2. When a substance Areacts with water itproduces a combustible gas Band a solution ofsubstance Cin waterWhen another substanceDreacts with this solution of C - it also producesthe same gas Bon warming but Dcan producegas Bon reaction with dilute sulphuric acid atroom temperatureAimparts a deep goldenyellow colour to a smokeless flame of BunsenburnerA - B - Cand Drespectively are [1998]
3. When a substance Areacts with water itproduces a combustible gas Band a solution ofsubstance Cin waterWhen another substanceDreacts with this solution of C - it also producesthe same gas Bon warming but Dcan producegas Bon reaction with dilute sulphuric acid atroom temperatureAimparts a deep goldenyellow colour to a smokeless flame of BunsenburnerA - B - Cand Drespectively are [1998]
4. The O- O- H bond angle in H2O2 is [1994]
5. When H 2O2 is oxidised the product is [1999]
6. The ionization of hydrogen atom would giverise to [1990]
7. Which one of the following pairs ofsubstances on reaction will not evolve H 2 gas?[1998]88
8. The reaction of H 2O2 with sulphur is anexample of ........reaction [1988]
9. Which of the following groups of ions makesthe water hard? [1994]

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