Ocr b Study guides, Class notes & Summaries

(a) Fig. 1.1 shows two cubes that represent a large and a small multicellular plant. Fig. 1.1 Large multicellular plant Small multicellular plant Length = 2cm Width = 2 cm Depth = 2cm Surface area : volume = 6:1 (i) Using the data provided in Fig. 1.1, calculate the surface area : volume of the large multicellular plant. Surface area: volume = ..........................................................[2] (ii) Explain why a large multicellular plant needs a transport system but a sm...

OCR A LEVEL CHEMISTRY B (SALTERS) H433/01 FUNDAMENTALS OF CHEMISTRY 2024 ACTUAL EXAM WITH 100% CORRECT ANSWERS. CHECK THE LAST PAGE FOR ANSWERS. 1 Which feature of the structure of the atom was deduced from the Geiger and Marsden experiment? A Atoms consist of electrons, protons and neutrons. B The nucleus is small and dense. C Electrons exist in energy levels/shells. D Electrons exist in atomic orbitals. Your answer [1] 2 Which row gives the correct trends for the followi...

2 OCR 2023 SECTION A You should spend a maximum of 25 minutes on this section. Write your answer to each question in the box provided. 1 Which statement explains the trend in boiling points down the halogens group? A Covalent bonds become stronger. B Induced dipole–dipole interactions (London forces) become stronger. C Ionic bonds become stronger. D Permanent dipole–dipole interactions become stronger. Your answer [1] 2 A hydrocarbon contains 85.71% carbon by mass. What is the em...

2 © OCR 2023 SECTION A 1 A plumbing firm is struggling to keep up with demand. What would help the business to succeed? A Asking regular customers with blocked toilets to ring back another day B Giving customers unrealistic appointment times C Ignoring customer complaints about delays in fixing water leaks D Planning all business activity and work schedules carefully Your answer [1] 2 What is a non‑financial method of motivation that a manufacturer of handmade wooden toys could use...

2 © OCR 2023 Top handle Side handle SECTION A 1 Images of a suitcase are shown below. Heightadjustable handle Zips Polymer wheels (a) The suitcase is made from synthetic fabric. (i) What is a synthetic fabric? ...................................................................................................................................... [1] (ii) Name one synthetic fabric. ..........................................................................................................

OCR A Level Mathematics B (MEI) H640/02 Pure Mathematics and Statistics JUNE 2022

ocr A Level Further Mathematics B (MEI) Y431-01 Question Paper June2023.