Hi Ramya,
Following is the list of questions I prepared.
If the parents are working you need to prepare them to answer some more questions..
-Meghana

Sr No Question

1 Why do you want to visit the US?

2 Which places will you visit in US?

3 Will you return to India after your visit?How can you assure me that you will come back?

4 How will you finance your trip?

5 Why do you want to visit only at this time?

6 How long has it been since the last time you met your daughter.?

7 Do you have any other relatives in the US?

8 What relatives do you have in India?

9 Why do you want a 6 month visa?Can't you finish your trip in a shorter time?

10 What will you do at home when your son-in-law and daughter go to work?

11 What does your daughter do?

12 Which visa is she on?

13 What does your son-in-law do?

14 Where does your daughter and son-in-law stay in the US?

15 What is your daughter's birthdate?

16 What is your son-in-laws birthdate?

17 What is the date of your daughter's wedding anniversary?

18 What do you do in India?

19 What is your annual income?

20 Do you have a credit card?

21 If no then how will you spend at airport etc?

22 Who is sponsoring you?

23 When did you retire ? How much pension do you get?

24 Did you ever do international travel before?

25 Would you please show me your visiting card?

26 Will ou work in US?

27 I can grant visa to only one of you

28 What would you do if you win a jackpot there

29 What if someone offers you a job in USA at very high salary

30 What if someone offers you partnership in his business

31 What if someone beautiful proposes you for marriage

32 How many kids o you have?Where are they ?

33 Where does your son work? Place ?

34 How can you manage your finances with so little pension?

35 On what visa is your daughter in US? Does she work in US?

36 How much expenses do you think will be incurred on this trip?

37 Do you want US citizenship?

38 DO you want to immigrate to US?

39 Is your son-in-law a US citizen?

40 If I grant you 10 yrs visa how long will you stay?

41 What is legal status of your son-in-law/ Which visa is he on

42 What is his nature of work

43 How much is his income

44 Which countries has he visited

45 Is your daughter pregnant?

46 How many yrs has ur daughter been married now?

47 What is your daughters age

48 What is your son in laws age

49 When will you visit US

50 when will you return
Raji replied. Hi Meghana,

How did your parents respond when the consulate guys asked Is your daughter pregnant? Do let me know. Want to pass on this info to my friend.

Thanks,
Raji Ramya replied. Hello Meghana,

Thank u very much .So nice of you

-Rgds
Ramya