QUES: Many minerals provide pigments which have been used in green paints and dyes over the centuries. Pigments, in this case, are minerals which reflect the color green, rather that emitting it through luminescent or phosphorescent qualities. The large number of green pigments makes it impossible to mention them all. Among the more notable green minerals, however is the emerald, which is colored green by trace amounts of chromium and sometimes vanadium. Chromium(III) oxide (Cr2O3), is called chrome green, also called viridian or institutional green when used as a pigment. For many years, the source of amazonite's color was a mystery. Widely thought to have been due to copper because copper compounds often have blue and green colors, the blue-green color is likely to be derived from small quantities of lead and water in the feldspar. Copper is the source of the green color in malachite pigments, chemically known as basic copper(II) carbonate.

What is the name of minerals that emit green through their luminescence?
What is the answer?
ANS: unanswerable
QUES: An MP3 file is made up of MP3 frames, which consist of a header and a data block. This sequence of frames is called an elementary stream. Due to the "byte reservoir", frames are not independent items and cannot usually be extracted on arbitrary frame boundaries. The MP3 Data blocks contain the (compressed) audio information in terms of frequencies and amplitudes. The diagram shows that the MP3 Header consists of a sync word, which is used to identify the beginning of a valid frame. This is followed by a bit indicating that this is the MPEG standard and two bits that indicate that layer 3 is used; hence MPEG-1 Audio Layer 3 or MP3. After this, the values will differ, depending on the MP3 file. ISO/IEC 11172-3 defines the range of values for each section of the header along with the specification of the header. Most MP3 files today contain ID3 metadata, which precedes or follows the MP3 frames, as noted in the diagram.

How many bits are needed to indicate that layer 3 is used?
What is the answer?
ANS: two
QUES: Napoleon's set of civil laws, the Code Civilnow often known as the Napoleonic Codewas prepared by committees of legal experts under the supervision of Jean Jacques Regis de Cambaceres, the Second Consul. Napoleon participated actively in the sessions of the Council of State that revised the drafts. The development of the code was a fundamental change in the nature of the civil law legal system with its stress on clearly written and accessible law. Other codes ("Les cinq codes") were commissioned by Napoleon to codify criminal and commerce law; a Code of Criminal Instruction was published, which enacted rules of due process.

What was the contemporary term for the set of civil laws created by Napoleon?
What is the answer?
ANS:
the Code Civil