Acids and alkalis are common in daily life ... you get more accurate results if you only put a small spot of the test solution on the paper, and then leave the colour to develop for about 30 ...

Digital creator Tanya Malik Chawla suggests a one-minute baking soda test to assess stomach acidity levels. She claims that low stomach acid, not excess acid, might cause food to remain undigested, ...

She suggests you take this test, which includes ... the time taken to burp as an indicator of stomach acid levels. Baking ...