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Q17) Which of the following statements is true? [ CBSE PMT 2002]




SOLUTION


Answer: (b)


Q18) Which one of the following order is correct for the bond energies of halogen molecules? [ EAMCET 2001]




SOLUTION


Answer: (d)


Q19) The hybridization in ICl7 is .. [ DEC 2000]



SOLUTION

Total valence electrons = 7×8= 56
Now 64 ÷ 8 = 7 thus sp3d3 hybridization
Answer:(a)



Q20) When KI and CuSO4 solution are mixed, It gives



SOLUTION

2CuSO4 + 4KI → Cu2I2 + 2K2SO4 + I2
Answer: (b)


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