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Placement testing is a practice that many colleges and universities use to assess college readiness and determine which classes a student should initially take. Since most two-year colleges have open, non-competitive admissions policies, many students are admitted without college-level academic qualifications.
The OPT replaced the now retired Quick Placement Test, a CD-ROM test provided in partnership with Cambridge English. The success of the Oxford Placement Test led to the design of the Oxford Test of English, and online computer-adaptive English Proficiency test, used as proof of English ability for university entry and employment. [1]
Question type 1: test takers are presented with one sentence, followed by a question concerning its meaning. Test takers must select the correct answer from four options. Question type 2: test takers are presented with a short reading passage (approx 150 words), followed by 4 to 5 reading comprehension questions. Test takers must select the ...
Assessment is often divided into initial, formative, and summative categories for the purpose of considering different objectives for assessment practices. (1) Placement assessment – Placement evaluation may be used to place students according to prior achievement or level of knowledge, or personal characteristics, at the most appropriate ...
Part of the test is multiple-choice and part involves fuller answers. There are six and a half hours of assessment material, but each student is not tested on all the parts. Following the cognitive test, participating students spend nearly one more hour answering a questionnaire on their background including learning habits, motivation, and family.
The main use of litmus is to test whether a solution is acidic or basic, as blue litmus paper turns red under acidic conditions, and red litmus paper turns blue under basic or alkaline conditions, with the color change occurring over the pH range 4.5–8.3 at 25 °C (77 °F). Neutral litmus paper is purple. [2]
Bacteria are inoculated on a medium containing sodium citrate and a pH indicator such as bromothymol blue. The medium also contains inorganic ammonium salts, which are utilized as sole source of nitrogen. Use of citrate involves the enzyme citrate lyase, which breaks down citrate to oxaloacetate and acetate.
Metabolic acidosis can lead to acidemia, which is defined as arterial blood pH that is lower than 7.35. [6] Acidemia and acidosis are not mutually exclusive – pH and hydrogen ion concentrations also depend on the coexistence of other acid-base disorders; therefore, pH levels in people with metabolic acidosis can range from low to high.