Mayhank Agarwal and Mandeep Singh smashed superb tons to guide the Indian under-19 team to an emphatic 187-run victory.

Mayhank hit a 142-ball 160 and Mandeep, batting at number three, carved out a unbeaten 151, powering India to a massive 371 for four from their stipulated 50 overs after captain Ashok Menaria chose to bat on a flat Bellerive Oval wicket under clear skies.

In reply, Australia could only manage 184 before folding up in 43.3 overs.

India lead series 2-0

India now lead the five-match series 2-0 with the next game -- a three-day encounter -- starting at Bellerive on Saturday before the series moves to Perth next week.

Mayhank's brilliant knock was studded with 16 fours and six sixes and the home side had little answer to his partnership with Mandeep as Australia captain Tom Triffitt rotated eight bowlers, all of whom faced the full force of the Indian top order.

Mayhank received excellent support from Mandeep who reached his hundred in the 43rd over, his century coming in 91 deliveries as the pair put on 270 runs for the third wicket.

Queenslander Alister McDermott finished with figures of 2-67 from his 10 overs for the hosts.

Watching from behind the stumps, Triffitt gave high praise to the way the Indian top-order went about their batting.

"It was awesome to see Indians batting"

"It was awesome to see the Indians batting today and going so hard at us and bat so well," the teenager said.

"They play so differently to us, they've got different strengths and they utilised the short boundary so well and we probably didn't bowl quite as well as we would have liked," he said.

Australia under-19 slipped to 2-13 at one stage, however, West Australian opener Tom Beaton stuck around, combining with Tim Armstrong (37) to put on a 77-run partnership, before the home side was dismissed.

New South Wales all-rounder Adam Coyte was unable to bat after suffering an injury in his bicep while fielding in the outfield.

Beaton top scored for the Aussies, his knock of 73 coming off 80 deliveries and included six boundaries and two sixes.

"Tom's a good batsman; he's played that sort of innings at the (underage) championships pretty regularly; he's a pretty consistent performer and it was a good innings from him today," Triffitt said.