1. Please scan and attach the form you are referring to. I am sure that you can make that effort for all the free advice.
2. My 2 paisa worth advice is not to concel any material facts about yourself or your wife. If you or your wife plan to work/ live outside India, say for e.g a country like US, you could be fined upto $10,000.
3. In India, you can be sure that there may be civil or criminal penaties for concealing, lying, forging documents, some of which may be under oath or penalty of perjury.
4. Your rationale behind concealing your to-be wifes past states, " ...i am not happy to show her as divorsed." .
Would you be happy if this same women tommorow blackmails you into something against your will for falsifying document.
One need not be sick to go see a Doctor. Go see a Advocate before you fudge some document and then really need a Doctor and an Advocate.
Good luck with your life and marriage.
US law in part for falsifying/concealing facts in immigration documents:
PENALTIES: By law, you may be imprisoned for not more than five years or fined $250,000, or both, for entering into a marriage contract for the purpose of evading any provision of the immigration laws. In addition, you may be fined up to $10,000 and imprisoned for up to five years, or both, for knowlingly and willfully falsifying or concealing a material fact or using any false document in submitting this petition