UNITED BOOK HOUSE-MODEL QUESTION PAPER 3-EXERCISE
- Name two components of photochemical smog and mention one.of the harmf...
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- An atom of an element contains 2. 8 and 5 electrons in K, L and M shel...
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- An atom of an element contains 2. 8 and 5 electrons in K, L and M shel...
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- 2nd Ionisation potential of oxygen is greater than 2nd ionisation pote...
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- What is transitional element.
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- Atomic number of three elements A. B and C are 10, 13 and 17 respectiv...
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- Atomic number of three elements A. B and C are 10, 13 and 17 respectiv...
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- Atomic number of three elements A. B and C are 10, 13 and 17 respecti...
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- Why Cl2 molecule exists but not Ne2 molecule.
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- Give an example of a molecule which violets octet rule.
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- Between N2O and NO2 molecules which one is more polar? Explain.
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- Mention the state of hybridasation of the .central atom in the followi...
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- Calculate the total pressure in a mixture of 8g of oxygen and 4 g of h...
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- What property of molecules of real gases is indicated by van der Waal’...
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- State and explain the first law of thermodynamics.
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- Deduce the relation between enthalpy and internal energy for gaseous s...
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- Write one equation where DeltaH ,= DeltaE.
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- In the reaction, A rarrB + C, DeltaH =25 kJ mor^-1 and DeltaS = 62.5 J...
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- What is the oxidation number of ‘P atom in K4P2O7 molecule?
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- Balence the following chemical equation by oxidation numbermethod : Cu...
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