I have some moong dal that I bought at an Indian market a few months ago. I've stored them in a sealed tupperware container. When I opened them today (to make them for dinner tonight), they smell strongly - not necessarily bad, but pungent. Is this normal? Or have they gone bad?
Moong dal has a characteristic odour that concentrates over the time in a closed container (like Tupperware). So you are good. Just make sure that the dal is not stuck in clusters, has changed colour or has developed mold. In which case you will have to discard it.
It does sound strange to me. I always get my lentils and pulses for months and store but never they smelled pungent. It will have its own characteristic aroma. If it is rather pungent there should be some reason as to why. Please analyze it. Wash it and check if the smell goes off. If not, I would be hesitant to use it.