Boil 1 cup of corn in a pot of water. Add some salt and boil for about 5-6 minutes. Take out the corn in a bowl and pat dry with a paper towel. Now add 2 tbsp cornflour to the bowl and toss well to coat the corn well. Heat some oil in a kadhai for deep-frying. Fry the coated corn in batches until crispy. Take out the crispy corn in a bowl. Add ¼ tsp red chilli powder, ½ tsp chaat masala, ¼ tsp roasted cumin powder, juice of half a lemon and salt as per taste. Mix well to coat the fried corn in the masala. Your lip-smacking Crispy Corn snack is ready to be served.