In my childhood one used wet wood ash as a scouring powder.
Materials which are used for scouring are known as abrasives. Please see the related link.
dolomite
Scouring powder is a cleaning agent that contains abrasive particles. It is typically used to scrub and remove tough stains, dirt, and grime from surfaces like sinks, countertops, and tubs. Scouring powders are effective at providing a deep clean but may scratch delicate surfaces.
You can substitute fenugreek powder with mustard powder, cumin powder, or curry powder in a recipe.
A suitable substitute for fenugreek powder in this recipe could be mustard powder or cumin powder.
Gelatin can be used as a substitute for agar powder in a recipe.
You can substitute onion powder with finely chopped fresh onions in a recipe.
Paprika or turmeric can be used as a substitute for annatto powder in recipes.
Ground okra can be used as a substitute for file powder in recipes.
no but usually there is alternatives like oils you can substitute instead of baking powder
A suitable substitute for amchur powder in recipes is lemon or lime juice.
You can substitute a mix of cumin, turmeric, coriander, and cayenne pepper for curry powder in a recipe.