ECONOMICS,NURSING,BIOLOGY AND ALL REVISION MATERIALS

Edexcel IGCSE Chemistry - Paper 1 Exam Questions & Answers Potassium manganate (VII) and water (purple colour spreads), ammonia and hydrogen chloride (white ring forms closer to hydrogen chloride), bromine gas and air (brown bromine gas diffuses) - ANSWERS3 experiments to show diffusion 4OH- = O2 + 2H2O + 4E- - ANSWERSHalf equation for hydroxide ions Moves slowly (on the surface), fizzes, eventually disappears - ANSWERSLithium with water - observations Moves quickly (on the surface...

Edexcel A level biology exam questions & answers Describe the events of fertilisation that occur after the acrosome reaction. - ANSWERS-Membrane of sperm and egg cell fuse together -cortical granules release contents into zona pellucida -Zona pellucida thickens -Haploid nuclei fuse Explain how phospholipids form a cell surface membrane - ANSWERS-Hydrophilic parts associate with water -Hydrophobic parts repel water -a bilayer forms with hydrophobic parts pointing in towards the ce...

Edexcel GCSE Maths Higher Exam Questions & Answers area of a circle - ANSWERS surface area of a sphere - ANSWERS surface area of a cone - ANSWERSπr x slanted length x πr^2 volume of cone - ANSWERS volume of a sphere - ANSWERS area of trapezium - ANSWERS1/2(a+b) x height circumference of a circle - ANSWERSπ x d volume of a cuboid - ANSWERSl x w x h volume of a cylinder - ANSWERS volume of a pyramid - ANSWERS1/3 x area of base x h distance - ANSWERSspeed x tim...

Edexcel IGCSE History exam practice questions & answers 2022 (b) Explain two effects of Nazi rule on the Churches in the years 1933-39. (8) - ANSWERSRelevant points may include: • An effect was that the Concordat (1933) with the Pope gave the Nazis greater control over Catholic education, e.g. Catholic schools were brought into line with state schools or closed • An effect was that the Nazis forbade Roman Catholic priests from intervening in politics, and some were harassed, arrested a...

Edexcel IGCSE Physics Exam Questions & Answers average speed = - ANSWERSdistance / time v = d / t Standard Unit for mass (m) - ANSWERSkilogram (kg) Standard Unit for distance (d) or displacement (s) - ANSWERSmetre (m) Standard Unit for speed (s) or velocity (v) - ANSWERSmetre/second (m/s) Standard Unit for acceleration (a) - ANSWERSmetre/second² (m/s²) Standard Unit for Force (F) - ANSWERSNewton (N) Standard Unit for time (t) - ANSWERSSecond (s) Standard Un...

ACI Aggregate Base Testing Technician Questions & Answers Testing - ANSWERSSampling should be done very carefully because it is as important as ____________. Conveyer belts Transport units Roadways Stockpiles - ANSWERSWhat are the four sources from which field samples can be obtained? contaminated, damaged - ANSWERSSampling containers for aggregate samples should be made so that the contents will not be lost, _____ or _____. Nonrepresentative sample - ANSWERSNot using correct pr...

ACI STUDY EXAM QUESTIONS GRADE A+ This test method covers sampling from stationary, paving and truck mixers, and from agitating and non agitating equipment used to transport central mixed concrete - ANSWERSTrue When the concrete contains large aggregate, the testing technician should wet sieve the sample before making unit weight tests for use in yield computation - ANSWERSFalse - cant wet sieve unit weight Samples should be taken before 10% or after 90% of the batch has been discharg...

ACI Exam Questions Grade A+

ACI Masonry Field Testing Technician practical exam questions & answers

ACI Grade 1 Field Testing Certification Practice Test – Irving Questions & Answers For concrete with aggregates less than 3 inches, the thermometer must remain in the fresh concrete sample a minimum of 5 minutes or until the temperature reading stabilizes. (T or F) - ANSWERSFalse (2-5 minutes) The temperature measuring device must be accurate to within 0.1 degree. (T or F) - ANSWERS The temperature measuring device shall have a capacity of measuring temperature of freshly mixed conc...

ACI Aggregate Testing Technician - Level 1 - Sample Written Exam Questions & Answers 1. Which of the following statements is false? Aggregates are sampled: A. For the acceptance or rejection of materials B. For the control of operations at the site of use C. For preliminary investigation of the potential source of supply D. For the control of the product at the source of supply E. For determination of pricing - ANSWERSE Appropriate equipment for inspection and sampling should be pro...

ACI Flatwork Exam Questions & Answers It is important that the ____________ __________ read and understand project specifications. - ANSWERSfinisher foreman If the crew can place and finish 100 yd3 of concrete per hour, the producer's delivery rate should be about _____ yd3 per hour. - ANSWERS100 Concrete is sold by the ton? - ANSWERSFalse Delays in discharging concrete trucks can result in the concrete being hard to: - ANSWERSpump, place, and finish When there is room for tw...

ACI Test Questions with Complete Solutions This "C172" test method covers sampling from stationary, paving and truck mixers, and from agitating and non-agitating equipment used to transport central-mixed concrete. T/F - ANSWERSTrue When the concrete contains large aggregate, the testing technician should wet-sieve the sample before making unit weight tests for use in yield computations. T/F - ANSWERSFalse Samples should be taken before 10% or after 90% of the batch has been disc...

ACI Certification Test 1 Questions & Answers Capping Cylindrical Concrete Specimens - ANSWERSThis practice covers apparatus, materials, and procedures for capping freshly molded concrete cylinders. Capping is used to provide - ANSWERSplaneness and perpendicularity Neat cement caps and high strength gypsum paste caps shall be formed against - ANSWERSa glass plate at least 6 mm (1/4 in) thick, a machine metal plate at least 11 mm (0.45 in) thick, or polished plate of granite 75 mm thick...

ACI Exam Questions with 100% Correct Answers Concrete samples typically contained in order to perform the following standard concrete tests: _______ , ________ , _______ , and _______. - ANSWERSslump, plastic air content, temperature, and casting of compressive strength moulds What are the two types of sampling? - ANSWERSEvaluation of the concrete quality Evaluation of the uniformity Define the evaluation of the concrete quality sampling type. - ANSWERSInvolves obtaining a single con...

ACI Certification Exam Questions & Answers 2. T/F: When the concrete contains large aggregate, the testing technician should wet-sieve the sample before making unit weight tests for use in yield computations. - ANSWERSFalse 4. T/F: Samples smaller than 28L (1 .) are allowed on routine air content, temperature, and slump tests. - ANSWERSTrue 7. How do you regulate the rate of discharge of the batch from the revolving truck drum mixer or agitator? - ANSWERSBy the rate of revolution of t...

ACI Written Exam Questions & Answers The sensor of the temperature measureing device shall be submerged a minimum of ____ in - ANSWERS3 (75mm) The temperature measureing device shall have a capacity of measuring temperature of freshly mixed conrcrete to +-_____ degrees F throught a range of _____ - ANSWERS1(.5 degrees C), 30-120 (0-50 degrees C) The temperature measuring device shall be calibrated____, or whenever there is a question of _____ - ANSWERSannually, accuracy The temp of...

ACI Concrete ASTM Strength Testing Lab Technician Questions & Answers C617 - ANSWERSASTM Standard dealing with proper capping methods Planeness and Perpendicularity - ANSWERSThe procedure for capping enables concrete cylinders to meet the standard's requirements for ____ and ____ plates, alignment, melting - ANSWERSequipment needed for the capping process include ____, ____ devices, and ____ pots glass, metal, granite, diabase - ANSWERSPlates for neat cement and high-strength gy...

ACI Concrete Flatwork Finishing Certification Exam Questions A+ When is air-entrained concrete used? - ANSWERSWhen it will be exposed to freezing and thawing cycles How is concrete sold? Sold in what units? - ANSWERSBy volume in cubic yards or cubic meters Concrete should be completely discharged: - ANSWERSWithin 1 1/2 hours Who should attend the pre-construction meeting? - ANSWERSFinisher foreman Type I Concrete - ANSWERSNormal or ordinary use What is type I concrete typical...

ACI Concrete Field Testing Technician Grade I Test Questions & Answers Volume of measure = 0.25 cf Mass of empty measure = 8.83 lbs After test, mass of measure and concrete = 43.82 lbs Total mass of all materials batched = 26,000 lbs Design volume = 7.00 cubic yards Theoretical density on an air free basis = 151.4 pcf Calculate: (a) Unit weight (b) Yield (in cubic yards) (c) Relative yield (d) Air content (%) - ANSWERS(a) 139.96 pcf (b) 6.88 cubic yards (c) 0.98 (d) 7.6% ...