(a) The quantum and value of coal and liquor imported during the last three years;
(b) whether Directorate of Revenue Intelligence have unearthed cases of overvaluation of imported coal from Indonesia by Indian companies, undervaluation of liquor imports by liquor companies and siphoning off the accrued money abroad in both the cases;
(c) if so, the details thereof and the action taken thereon against the offenders;
(d) the estimated revenue loss to the exchequer, company-wise; and
(e) the steps taken by the Government to curb such incidence in the future?