When you recharge your mobile through google pay, you are eligible to earn scratch cards. When you spend 50 rupees to recharge, you will get a scratch card worth 10 rupees to 40 rupees. When you spend 150 rupees to recharge, you will get additional scratch card that could win 15 rupees to 150 rupees. And when you spend 500 rupees to recharge your mobile, you will get additional scratch card that win 20 rupees to 300 rupees. The earned scratch card will be available for scratching in rewards section.