The problem: Answer a question about this article:
Hydrogen is highly soluble in many rare earth and transition metals and is soluble in both nanocrystalline and amorphous metals. Hydrogen solubility in metals is influenced by local distortions or impurities in the crystal lattice. These properties may be useful when hydrogen is purified by passage through hot palladium disks, but the gas's high solubility is a metallurgical problem, contributing to the embrittlement of many metals, complicating the design of pipelines and storage tanks.
When is it damaging?
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The answer: gas's high solubility is a metallurgical problem, contributing to the embrittlement of many metals, complicating the design of pipelines and storage tanks


The problem: Answer a question about this article:
A famous saying by the 8th-century Indian Buddhist scholar-saint Shantideva, which the 14th Dalai Lama often cites as his favourite verse, summarizes the Bodhisattva's intention (Bodhicitta) as follows: "For as long as space endures, and for as long as living beings remain, until then may I too abide to dispel the misery of the world."[citation needed]
Which Dalai Lama cites Shantideva's famous saying?
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The answer: the 14th Dalai Lama


The problem: Answer a question about this article:
Vaiśeṣika metaphysical premises are founded on a form of atomism, that the reality is composed of four substances (earth, water, air, fire). Each of these four are of two types: atomic (paramāṇu) and composite. An atom is, according to Vaiśeṣika scholars, that which is indestructible (anitya), indivisible, and has a special kind of dimension, called “small” (aṇu). A composite, in this philosophy, is defined to be anything which is divisible into atoms. Whatever human beings perceive is composite, while atoms are invisible. The Vaiśeṣikas stated that size, form, truths and everything that human beings experience as a whole is a function of atoms, their number and their spatial arrangements, their guṇa (quality), karma (activity), sāmānya (commonness), viśeṣa (particularity) and amavāya (inherence, inseparable connectedness of everything).
What are the substances of Vaisesika reality?
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The answer: earth, water, air, fire


The problem: Answer a question about this article:
Most prime ministers in parliamentary systems are not appointed for a specific term in office and in effect may remain in power through a number of elections and parliaments. For example, Margaret Thatcher was only ever appointed prime minister on one occasion, in 1979. She remained continuously in power until 1990, though she used the assembly of each House of Commons after a general election to reshuffle her cabinet.
Which prime minister was appointed only one time?
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The answer:
Margaret Thatcher