Toor dal and chana dal are more likely to cause acidity than other dals.

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It depends individually.

Few people feel gassy after eating Toor dal It’s basically one’s digestive power it all depends upon

It depends on the preparation and the added ingredient       While dal itself is not known to cause gastritis, some people with gastritis may find certain types of dal or the spices used in its preparation to be irritating to their stomach lining. For example, spicy or heavily seasoned dals may trigger symptoms in individuals with gastritis or those with a sensitive stomach.

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Sometimes it does cause acidity but not solely depend on daal but preparation method and add ons also causes acidity