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In some of its material, OCR has made mistakes and inaccuracies, sometimes including inaccurate or fictitious content in subject specifications or errors in exam papers. 1998: All the UK schools examinations and vocational qualifications of the UCLES Group were transferred to OCR.
Cannot be combined with syllabuses 0452 & 0614 , 4345, 7092 & 7175 (O Level).The Cambridge O Level Principles of Accounts 7110 syllabus has been revised and now has a new title and code: Cambridge O Level Accounting 7707. The last examination series for Cambridge O Level Principles of Accounts 7110 will be November 2019. [4] link: CIE 7115
For the 2019 examinations onwards, the specifications have been updated to reflect the reforms in A Level Mathematics and Further Mathematics; [7] in addition, the number of questions in each paper has been reduced. Specifically: The STEP 1 specification was based on A Level Mathematics, with some additions and modifications.
The BTEC is another Level 1/2 qualification available in the same territories as the GCSE, and is graded at 5 levels. At Level 2, comparable to A*, A, B, and C respectively are the Distinction*, Distinction, Merit, and Pass. A BTEC at Level 1 is simply marked as "Level 1", with no subdivision. Below that level, a U is awarded, as in GCSEs.
BET model of multilayer adsorption, that is, a random distribution of sites covered by one, two, three, etc., adsorbate molecules. The concept of the theory is an extension of the Langmuir theory, which is a theory for monolayer molecular adsorption, to multilayer adsorption with the following hypotheses:
Metamerism may refer to: . Metamerism (biology), in zoology and developmental biology, the property of having repeated segments, as in annelids Metamerism (color), in colorimetry, a perceived matching of colors that, based on differences in spectral power distribution, do not actually match
In analytical chemistry, a standard solution (titrant or titrator) is a solution containing an accurately known concentration.Standard solutions are generally prepared by dissolving a solute of known mass into a solvent to a precise volume, or by diluting a solution of known concentration with more solvent. [1]
SAE Type 630 stainless steel (more commonly known as 17-4 PH, or simply 17-4; also known as UNS S17400) is a grade of martensitic precipitation hardened stainless steel.It contains approximately 15–17.5% chromium and 3–5% nickel, as well as 3–5% copper. [1]