Unlike the Parliamentary system, the concept of 'question hour' or 'question time' doesn't really exist in the American legislature. Here's an interesting report done by the Congressional Research Service on the possibility of a question time in the US. From our point of view, the report is interesting because it reviews the existing provisions for a Parliamentary Question Time in different countries (India isn't mentioned), and considers the pros and cons of such a system. The report concludes: "Whether the question period would be successful in a system of separated powers depends in large part on the attitude of its participants and on the format the question period ultimately assumes. The question period has the potential of involving more rank-and-file Members in the policy-making process, and improving the means of communication between executive departments and the Congress. It also could harden relations between the Congress and the Executive, and might increase the level of partisan controversy in Congress." There's even an online petition among a few american bloggers to push for a question time in the US. Read about it here. In this country of course, parliamentary questions are an established feature of the work of Parliament. Parliamentary questions cover a huge range of topics and can be an mine of information and data about government policy. The Lok Sabha and Rajya Sabha sites put the complete text of all parliamentary questions (and the responses to them) online.
The following is a comparison of the rules regarding the transparency of MPs' private interests in India and South Africa. In India, conflict of interest amongst MPs has been debated extensively in the recent past. The primary check on preventing potential conflicts is that all MPs must declare their assets and liabilities to the concerned Speaker (Lok Sabha) or Chairman (Rajya Sabha). The Rajya Sabha Ethics Committee maintains a register of these interests (no such register exists for Lok Sabha MPs). Details in the Register of Members' Interests include: remunerative directorship, regular remunerated activity, shareholding of controlling nature, paid consultancy, and professional engagement. This material, however, is not put in the public domain. An interesting comparison is the Parliament of South Africa, where the Register of Members Interests' (consisting of MPs from both upper and lower house) is made public. Financial interests of MPs, remuneration from employment outside of Parliament, directorships, consultancies, property details, pensions, etc., are all made public (see latest register here).