The Prashnopanishad (, ) is an ancient Sanskrit text, embedded inside Atharva Veda, ascribed to Pippalada sakha of Vedic scholars. It is a Mukhya (primary) Upanishad, and is listed as number 4 in the Muktika canon of 108 Upanishads of Hinduism. The Prashna Upanishad contains six Prashna (questions), and each is a chapter with a discussion of answers. The chapters end with the phrase, prasnaprativakanam, which literally means, "thus ends the answer to the question". In some manuscripts discovered in India, the Upanishad is divided into three Adhyayas (chapters) with a total of six Kandikas (कण्डिका, short sections). The first three questions are profound metaphysical questions but, states Eduard Roer, do not contain any defined, philosophical answers, are mostly embellished mythology and symbolism. The fourth section, in contrast, contains substantial philosophy. The last two sections discuss the symbol Om and Moksha concept. Roer as well as Weber suggest that the last two Prashnas may be spurious, later age insertion into the original Upanishad. Prashna Upanishad is notable for its structure and sociological insights into the education process in ancient India. The Upanishad is also known as the Prashnopanishad (, ). In some historic Indian literature and commentaries, it is also called Shat Prasna Upanishad. Etymology Prashna (प्रश्न) literally means, in modern usage, "question, query, inquiry". In ancient and medieval era Indian texts, the word had two additional context-dependent meanings: "task, lesson" and "short section or paragraph", with former common in Vedic recitations. In Prashna Upanishad, all these contextual roots are relevant. The text consists of questions with lessons, and the sections of the Upanishad are also called prashna. Chronology The Prashna Upanishad was probably composed in the second half of 1st millennium BCE, likely after other Atharva Veda texts such as the Mundaka Upanishad, but the precise chronology of Prasna Upanishad is unclear and contested. The Mundaka Upanishad, for example, writes Patrick Olivelle, is rather later era ancient Upanishad and is, in all probability, post-Buddhist. The chronology of Prasna Upanishad, and other ancient India texts, is difficult to resolve because all opinions rest on scanty evidence, an analysis of archaism, style and repetitions across texts, driven by assumptions about likely evolution of ideas, and on presumptions about which philosophy might have influenced which other Indian philosophies. Olivelle states Prashna Upanishad "cannot be much older than the beginning of the common era". Mahony suggests an earlier date, placing Prashna along with