how one should pay alimony in mutual consent divorce so wife can't cheat by taking alimony money and dont give divorce ?

Enter into a settlement agreement/ MoU wherein all details including the quantum of alimony and mode of payment as mutually agreed be stated. You can pay the amount and the details be mentioned in the said document and the same be mentioned in the MCD petition. Or else while filing MCD petition you may pay certain % of the total alimony by cheque/ DD on the same day after filing. Further when the matter is listed for final hearing (after six months) keep the DD/ Cheque ready for the remaining amount and the same can be given after hearing in the Court and when the Court keeps the matter for order.