PAG Bundled Exams Questions and Answers Multiple Versions Latest Updates (2024/2025) (Complete, Accurate, and Verified)
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PAG 9.1 – Protein Questions and Answers | Latest Version | Graded A+ **What are the components of Biuret reagent, and which chemicals pose hazards?** Biuret reagent contains sodium hydroxide, which is highly alkaline and can be corrosive in concentrated form. Copper sulfate is also present, w...
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In winkelwagenPAG 9.1 – Protein Questions and Answers | Latest Version | Graded A+ **What are the components of Biuret reagent, and which chemicals pose hazards?** Biuret reagent contains sodium hydroxide, which is highly alkaline and can be corrosive in concentrated form. Copper sulfate is also present, w...
PAG 2.2 the Dissection of A Stem Questions and Answers | Latest Version | 100% Pass 1. **Why is it crucial to produce very thin slices of plant tissue?** Thin slices are necessary to ensure that light passes through only a single layer of cells, which improves image clarity. If the tissue ...
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In winkelwagenPAG 2.2 the Dissection of A Stem Questions and Answers | Latest Version | 100% Pass 1. **Why is it crucial to produce very thin slices of plant tissue?** Thin slices are necessary to ensure that light passes through only a single layer of cells, which improves image clarity. If the tissue ...
PAG 2.2 Questions and Answers | Latest Version | 2024/2025 | Graded A+ How can you determine the molar mass of an acid? Weigh the container with H3X.nH2O, transfer the solid to a 250 cm3 beaker, and re-weigh the container. Dissolve the solid in 100 cm3 of distilled water and stir. Transfer the...
Voorbeeld 1 van de 3 pagina's
In winkelwagenPAG 2.2 Questions and Answers | Latest Version | 2024/2025 | Graded A+ How can you determine the molar mass of an acid? Weigh the container with H3X.nH2O, transfer the solid to a 250 cm3 beaker, and re-weigh the container. Dissolve the solid in 100 cm3 of distilled water and stir. Transfer the...
PAG 5.1 Extension Questions and Answers | Latest Version | Graded A+ 1. **Why is it advised to add hydrochloric acid dropwise rather than all at once?** Adding concentrated acid all at once can cause excessive heating due to the exothermic nature of the reaction. This could potentially raise ...
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In winkelwagenPAG 5.1 Extension Questions and Answers | Latest Version | Graded A+ 1. **Why is it advised to add hydrochloric acid dropwise rather than all at once?** Adding concentrated acid all at once can cause excessive heating due to the exothermic nature of the reaction. This could potentially raise ...
PAG (application) Questions and Answers | Latest Update | Graded A+ **Qualitative testing - emulsion test** **Why does the emulsion test not show false positives for monosaccharides & disaccharides, starch, nucleic acid, and protein?** The emulsion test relies on the solubility properties ...
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In winkelwagenPAG (application) Questions and Answers | Latest Update | Graded A+ **Qualitative testing - emulsion test** **Why does the emulsion test not show false positives for monosaccharides & disaccharides, starch, nucleic acid, and protein?** The emulsion test relies on the solubility properties ...
PAG 3.1 Questions and Answers | Latest Update | 2024/2025 | Already Passed **How can you determine the enthalpy change when neutralising HCl with NaOH?** To determine the enthalpy change of neutralisation, start by placing a polystyrene cup inside a glass beaker. Measure 25 cm3 of 1.0 mol/dm3...
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In winkelwagenPAG 3.1 Questions and Answers | Latest Update | 2024/2025 | Already Passed **How can you determine the enthalpy change when neutralising HCl with NaOH?** To determine the enthalpy change of neutralisation, start by placing a polystyrene cup inside a glass beaker. Measure 25 cm3 of 1.0 mol/dm3...
PAG 2.1 Questions and Answers | Latest Version | 2024/2025 | Graded A+ **How do you prepare a standard solution of sodium hydrogen carbonate (NaHCO3) for determining the concentration of HCl?** Weigh 2.1g of solid sodium hydrogen carbonate into a beaker using a weighing boat. Rinse the boat ...
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In winkelwagenPAG 2.1 Questions and Answers | Latest Version | 2024/2025 | Graded A+ **How do you prepare a standard solution of sodium hydrogen carbonate (NaHCO3) for determining the concentration of HCl?** Weigh 2.1g of solid sodium hydrogen carbonate into a beaker using a weighing boat. Rinse the boat ...
A Level Biology: PAG Extension Questions and Answers | Latest Version | 2024/2025 | Graded A+ **3.1 If farmers plant hedges around their fields, what impact might this have on species diversity around their land?** Planting hedges would likely increase species diversity by providing more h...
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In winkelwagenA Level Biology: PAG Extension Questions and Answers | Latest Version | 2024/2025 | Graded A+ **3.1 If farmers plant hedges around their fields, what impact might this have on species diversity around their land?** Planting hedges would likely increase species diversity by providing more h...
PAG Questions and Answers | Latest Update | 2024/2025 | Already Graded A **What is the purpose of mitosis for a living organism?** Mitosis serves the purposes of growth, repair of tissues, and asexual reproduction. **What distinguishes each stage of mitosis?** Prophase: Chromosomes become...
Voorbeeld 2 van de 6 pagina's
In winkelwagenPAG Questions and Answers | Latest Update | 2024/2025 | Already Graded A **What is the purpose of mitosis for a living organism?** Mitosis serves the purposes of growth, repair of tissues, and asexual reproduction. **What distinguishes each stage of mitosis?** Prophase: Chromosomes become...
PAG Extension Questions and Answers | Latest Version | 2024/2025 | Already Passed **What is the purpose of mitosis for a living organism?** Mitosis serves for growth and tissue repair, as well as for asexual reproduction. **What are the key visible features of each stage of mitosis?** ...
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In winkelwagenPAG Extension Questions and Answers | Latest Version | 2024/2025 | Already Passed **What is the purpose of mitosis for a living organism?** Mitosis serves for growth and tissue repair, as well as for asexual reproduction. **What are the key visible features of each stage of mitosis?** ...
PAG Extended Questions | Latest Version | 2024/2025 | Verified Solutions **What is the purpose of mitosis for a living organism?** Mitosis serves for growth and repair of tissues, as well as for asexual reproduction. **What distinguishes each stage of mitosis?** Prophase: Chromosomes beco...
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In winkelwagenPAG Extended Questions | Latest Version | 2024/2025 | Verified Solutions **What is the purpose of mitosis for a living organism?** Mitosis serves for growth and repair of tissues, as well as for asexual reproduction. **What distinguishes each stage of mitosis?** Prophase: Chromosomes beco...
PAG 3.1 the Calculation of Species Diversity Questions and Answers | Latest Version | Graded A+ **Why does an oak woodland climax community have high species diversity?** An oak woodland supports many species because it offers a wide variety of food sources and habitats. This biodiversity ensu...
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In winkelwagenPAG 3.1 the Calculation of Species Diversity Questions and Answers | Latest Version | Graded A+ **Why does an oak woodland climax community have high species diversity?** An oak woodland supports many species because it offers a wide variety of food sources and habitats. This biodiversity ensu...
PAG 5.1: Synthesis of a Haloalkane Questions and Answers | Latest Version | Graded A+ **What is the process for making 2-chloro-2-methylpropane from 2-methylpropan-2-ol?** 2-chloro-2-methylpropane is produced from 2-methylpropan-2-ol through a nucleophilic substitution reaction where the hydro...
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In winkelwagenPAG 5.1: Synthesis of a Haloalkane Questions and Answers | Latest Version | Graded A+ **What is the process for making 2-chloro-2-methylpropane from 2-methylpropan-2-ol?** 2-chloro-2-methylpropane is produced from 2-methylpropan-2-ol through a nucleophilic substitution reaction where the hydro...
PAG 1.2 Determination of Relative Atomic Mass of Magnesium Latest Update Graded A+ **What errors occur when Mg is added to the experiment, affecting the calculated relative atomic mass of Mg? ** - **Smaller volume error:** This occurs because some gas escapes before the bung (stopper) is ...
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In winkelwagenPAG 1.2 Determination of Relative Atomic Mass of Magnesium Latest Update Graded A+ **What errors occur when Mg is added to the experiment, affecting the calculated relative atomic mass of Mg? ** - **Smaller volume error:** This occurs because some gas escapes before the bung (stopper) is ...
A Level Chemistry- PAG 5.2, Preparation of Cyclohexene Questions and Answers | Latest Version | Graded A+ What is the purpose of conducting this experiment? To synthesize cyclohexene from cyclohexanol through an elimination (dehydration) reaction. What equipment is necessary for the pre...
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In winkelwagenA Level Chemistry- PAG 5.2, Preparation of Cyclohexene Questions and Answers | Latest Version | Graded A+ What is the purpose of conducting this experiment? To synthesize cyclohexene from cyclohexanol through an elimination (dehydration) reaction. What equipment is necessary for the pre...
PAG: Determination of the formula for magnesium oxide | Latest Update | 100% Pass **Question:** What is the formula for magnesium oxide? **Answer:** The formula is magnesium + oxygen = magnesium oxide. **Question:** Describe the apparatus used for this experiment. **Answer:** The s...
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In winkelwagenPAG: Determination of the formula for magnesium oxide | Latest Update | 100% Pass **Question:** What is the formula for magnesium oxide? **Answer:** The formula is magnesium + oxygen = magnesium oxide. **Question:** Describe the apparatus used for this experiment. **Answer:** The s...
A-Level Chemistry PAG 6: Synthesis Of An Organic Solid Questions And Answers | Latest Version | Graded A+ **Question:** What are the necessary equipment and materials for the synthesis of benzoic acid via reflux and recrystallization? **Answer:** Required equipment includes: - Measuring c...
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In winkelwagenA-Level Chemistry PAG 6: Synthesis Of An Organic Solid Questions And Answers | Latest Version | Graded A+ **Question:** What are the necessary equipment and materials for the synthesis of benzoic acid via reflux and recrystallization? **Answer:** Required equipment includes: - Measuring c...
PAG 5.1, 8.1, 8.3 Questions and Answers | Latest Version | Graded A+ **Question:** What is the procedure for PAG 8.3 (Effect of detergent on plasma membrane permeability)? **Answer:** To conduct PAG 8.3, follow these steps: 1. Prepare a serial dilution starting from a 10% stock solutio...
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In winkelwagenPAG 5.1, 8.1, 8.3 Questions and Answers | Latest Version | Graded A+ **Question:** What is the procedure for PAG 8.3 (Effect of detergent on plasma membrane permeability)? **Answer:** To conduct PAG 8.3, follow these steps: 1. Prepare a serial dilution starting from a 10% stock solutio...
PAG 10.1 Investigating DNA structure using RasMol Questions and Answers | Latest Update | 2024/2025 | Already Passed **Question:** How are the DNA chains oriented with respect to each other? **Answer:** The DNA chains are arranged in an antiparallel orientation. This means that within t...
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In winkelwagenPAG 10.1 Investigating DNA structure using RasMol Questions and Answers | Latest Update | 2024/2025 | Already Passed **Question:** How are the DNA chains oriented with respect to each other? **Answer:** The DNA chains are arranged in an antiparallel orientation. This means that within t...
A-Level Chemistry PAG 12: Research Skills on Iron Tablets | Latest Version | 2024/2025 | Already Passed **Introduction:** - The iron tablet consists of several ingredients including spray-dried liquid glucose, stearic acid, magnesium stearate, microcrystalline cellulose, lactose granules ...
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In winkelwagenA-Level Chemistry PAG 12: Research Skills on Iron Tablets | Latest Version | 2024/2025 | Already Passed **Introduction:** - The iron tablet consists of several ingredients including spray-dried liquid glucose, stearic acid, magnesium stearate, microcrystalline cellulose, lactose granules ...
PAG 7.2 Questions and Answers | Latest Version | 2024/2025 | Already Passed **How can you differentiate between primary, secondary, and tertiary alcohols?** 1. Use a spotting tile to combine 3 drops of acidified 0.1 mol dm3 potassium dichromate with two drops of each alcohol in separate tes...
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In winkelwagenPAG 7.2 Questions and Answers | Latest Version | 2024/2025 | Already Passed **How can you differentiate between primary, secondary, and tertiary alcohols?** 1. Use a spotting tile to combine 3 drops of acidified 0.1 mol dm3 potassium dichromate with two drops of each alcohol in separate tes...
PAG 5.2 Questions and Answers | Latest Update | Graded A+ **How do you synthesize cyclohexane from cyclohexanol (excluding purification)?** 1. Place cyclohexanol in a small round-bottom or pear-shaped flask. 2. Add concentrated phosphoric acid slowly, mixing thoroughly. 3. Add anti-bumpi...
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In winkelwagenPAG 5.2 Questions and Answers | Latest Update | Graded A+ **How do you synthesize cyclohexane from cyclohexanol (excluding purification)?** 1. Place cyclohexanol in a small round-bottom or pear-shaped flask. 2. Add concentrated phosphoric acid slowly, mixing thoroughly. 3. Add anti-bumpi...
PAG 9.2 - Lipids (Emulsion Test) Questions and Answers | Latest Version | 2024/2025 | Graded A+ **Why don't monosaccharides and disaccharides give false positives in emulsion tests?** Monosaccharides and disaccharides are soluble in polar solvents like water, but they do not dissolve in...
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In winkelwagenPAG 9.2 - Lipids (Emulsion Test) Questions and Answers | Latest Version | 2024/2025 | Graded A+ **Why don't monosaccharides and disaccharides give false positives in emulsion tests?** Monosaccharides and disaccharides are soluble in polar solvents like water, but they do not dissolve in...
A-Level Chemistry PAG 7: Qualitative Analysis of Organic Functional Groups | Latest Version | 2024/2025 | Graded A+ **What equipment is needed for the experiment?** The necessary equipment includes test tubes, a test tube rack, and a dropping pipette. **What chemicals are used in Part A ...
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In winkelwagenA-Level Chemistry PAG 7: Qualitative Analysis of Organic Functional Groups | Latest Version | 2024/2025 | Graded A+ **What equipment is needed for the experiment?** The necessary equipment includes test tubes, a test tube rack, and a dropping pipette. **What chemicals are used in Part A ...
A-Level Chemistry PAG 4: Qualitative analysis of ions | Latest Version | Graded A+ **What equipment is needed for the experiment?** The required equipment includes litmus paper, distilled water, a 25cm3 measuring cylinder, a 100cm3 beaker, a 100cm3 conical flask, dropping pipettes, a tes...
Voorbeeld 2 van de 5 pagina's
In winkelwagenA-Level Chemistry PAG 4: Qualitative analysis of ions | Latest Version | Graded A+ **What equipment is needed for the experiment?** The required equipment includes litmus paper, distilled water, a 25cm3 measuring cylinder, a 100cm3 beaker, a 100cm3 conical flask, dropping pipettes, a tes...
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