According to electrochemical theory the metal which rusting take place as a result of

The events described may be taking place in the backyard of a household, during the spring season, whilst the warm air in the afternoon makes the weather seem warmer than...

Correct Answer - B Matel `= 5. 00` g Metal oxide ` = 9. 44` g Oxygen combined `= 4. 44` g `4.44` g of oxyen combined with `= 5. 00`...

Correct Answer - C `underset(0.1596 g)(A_(2) O_(3) )+ underset(0.006 g)(3 H_(2)) rarr 2 A + 3H_(2) O` `0.006 " g of" H_(2)` reduces ` 0. 1596 ` g of ` A_(2)...

Correct Answer - A Metal undergoing corrosion acts an anode .

Correct Answer - A Metal undergoes oxidation during corrosion and thus act as anode .

Correct Answer - B (b) : As kinetic energy `K=(hc)/(lamda)-(hc)/(lamda_(0))` K is positive therefore photoelectric emission will take place if `K=(hc)/(lamda)ge(hc)/(lamda_(0)) or lamdalelamda_(0)`

Correct Answer - A Electrochemical equivalent is the weight deposited by 1 coulomb `Q=1xxt "or" 1=1xx0.25` or 1=4A.

Correct option is C) 4 : 3

(a) For answer, consult Section 23. (b) `Ag^(+)` ions get reduced to Ag.

Correct Answer - D d) both energy of activation and frequency factor can be calcualted.