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• Chemistry

Chemistry 2011

  

Q. 26. Which of the two ions from the list given below that have the geometry that is explained by the same hybridization of orbitals

Sol.    

Answer: (1)

 

Q. 27. Which of the following elements is present as the impurity to the maximum extent in the pig iron?

(1) Phosphorus                                                 (2) Manganese

(3) Carbon                                                         (4) Silicon

Sol:

Fact

Answer : (3)

 

Q. 28. Which of the following is least likely to behave is Lewis base?

(1)  OH^-                                                                 (2) H₂O

(3) NH₃                                                                (4) BF₃

Sol.

BF₃ is an electron deficient species.

Answer : (4)

 

Q. 29. Which one of the following is present as an active ingredient in bleaching powder for bleaching action?

(1) CaCl₂                                                              (2) CaOCl₂

(3) Ca(OCl)₂                                                         (4) CaO₂Cl

Sol.

Fact

Answer : (3)

 

Q. 30. The complex, [Pt (Py) (lNH3) Br Cl ] will have how many geometrical isomers?

(1) 2                                                                        (2) 3

(3) 4                                                                        (4) 0

Sol.

Answer : (2)