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CBSE COMPLEMENTARY MATERIAL-SOLVED SAMPLE PAPER (CBSE DELHI - 2017)-CBSE DELHI - 2017
- Give reasons : Thermal stability decreases from H(2)O " to " H(2) Te...
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- Give reasons : Fluoride ion has higher hydration enthalpy than chlor...
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- Give reasons : Nitrogen does not form pentahalide.
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- Give reasons : Acetylation of aniline reduces its activation effect.
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- Give reasons : CH(3)NH(2) is more basic than C(6)H(5)NH(2).
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- Give reasons : Although -NH(2) is o/p directing group, yet aniline o...
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- Account for the following : Transition metals form large number of ...
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- Account for the following : The lowest oxide of transition metal is...
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- Account for the following : E^(@) value for the Mn^(3+)//Mn^(2+) c...
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- Write one similarity and one difference between the chemistry of lanth...
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- How does the variability in oxidation states of transition metals diff...
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- Out of Cu^(+)" and "Cu^(2+), which ion is unstable in aqueous solutio...
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- Orange colour of Cr(2)O(7)^(2-) ion changes to yellow when treated wi...
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- Give two reasons for the following Chemistry of actinoids is complica...
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- If the edge length of its unit cell is 300 pm, determine the type of u...
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- Write any two differences between amorphous solids and crystalline sol...
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- Calculate the number of unit cells in 8.1 g of aluminium if it crystal...
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- Give reasons : In stoichiometric defects, NaCl exhibits Schottky def...
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- Give reasons : Silicon on doping with Phosphorus forms n-type semico...
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- Give reasons : Ferromagnetic substances show better magnetism than a...
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