Without Googling, name something India invented.
Lock is the correct answer without googling.
With googling here is the result
Zero
Pie
Astronomy
Indigo
Cotton
Silk
Drainage system
Dam
Bricks
Weighing standards
Binary and decimal systems
Standard Bricks
Damascus Iron
Non rusting iron
Pythagoras
Button
Yoga
Love
Marriage system
Drilling rig
Spindles
Spices
Bull fighting
Geometry
Vastu
Dice
Panchtantra tale
Low cast iron
Skirts
Bangles
Town planning
Double hull ships
Water conservation
Jute
Disinfectant
Plastic surgery