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This section includes 7 InterviewSolutions, each offering curated multiple-choice questions to sharpen your Current Affairs knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Name the spectator ion present in ZnSO4 and CuSO4 |
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Answer» CuSO4:-COPPER sulphate |
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| 2. |
out of li, Be, Mg, Al, P and Cl which have completely filled and half filled orbitals consequently large ionisation enthalpies |
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Answer» vjhakebdbhdhevbsbdbdhhd Explanation: hxhdhsjajjakakajna |
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| 3. |
if 250 g of sodium hypochlorite is dissolved in 5 dm3 of water to prepare a solution. calculate the concentration in moles/dm3 of the sodium hypochlorite solution |
Answer» Given:250 g of SODIUM HYPOCHLORITE is DISSOLVED in 5 dm3 of water to prepare a solution. To find:Concentration of the solution in moles/dm³ unit ? Calculation:Molecular Formula of Sodium Hypochlorite is NaClO , its MOLAR mass is (23 + 35.5 + 16) = 74.5 g/mol. Moles of Sodium hypochlorite : Now , concentration : So, concentration of NaClO is 0.67 mol/dm³. |
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| 4. |
Calculate the mass of 16.044×10^23 no. of particles of CO2 |
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Answer» Explanation: 1.6044E24 |
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| 5. |
What is mendeleen's Periodic classifecation elements ? What are theanomali esofmendeleer's periodictable, |
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Answer» Answer: Mendeleev arranged all 63 elements; which were discovered till his time; in the ORDER of their increasing RELATIVE atomic masses in a tabular form. It is known as Mendeleev's Periodic Table. He divided the table in eight columns and SEVEN rows. The columns are known as groups and rows are known as periods. Explanation: |
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| 6. |
Q.14 Classify any four the following into intensive properties and extensive properties. |
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Answer» Answer: A property of a system, whose magnitude depends upon the amount of matter, is known as extensive property. Properties like mass, volume, internal energy, heat content, free energy, ENTHALPY, entropy, heat capacity, surface area, energy, etc. are dependent upon the mass of the system and are called extensive properties. Intensive property: A property of a system, whose magnitude does not depend upon the amount of matter, is known as intensive property. Properties like temperature, pressure, surface tension, VISCOSITY, specific heat, molar energy, molar entropy, density, refractive INDEX, etc., are INDEPENDENT of the mass of the system and are called intensive properties. Explanation: please follow me and MARKED me as BRAINLIST thanks for your question |
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| 7. |
State Rault's law for a salution cantaining non-valatile salute dissolued in valatile solvent |
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| 8. |
व्हिच ऑफ द फॉलोइंग इज द स्मालेस्ट साइज केमिस्ट्री क्वेश्चन सॉल्व |
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Answer» gush and INDIRECT and identify the best c for MEN and women who owns the CREW of the |
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| 9. |
Define conductivity and molar conductivity for the solution of an electrolyte. How dothey vary when the concentration of electrolyte in the solution increase |
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Answer» VALENCY Explanation: |
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| 10. |
The filling of molecular orbital takes place according to |
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Answer» 1)Aufbau principle : Molecular orbitals are filled in order of the increasing ENERGIES. 2)PAULI EXCLUSION principle: Molecular orbital can have maximum of 2 ELECTRONS and these must have opposite spin. |
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| 11. |
Name the element which have one electron |
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Answer» So, LITHIUM, SODIUM, and Potassium are the 3 ELEMENTS that have a SINGLE electron in their outermost orbit. Explanation: I hope it will be help you ❤️❤️❤️ |
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| 12. |
2 Correct Electronic configuration of "Cu" with atomic number 29 is(a) [Ar]304(b) [Ar]3d42(c) [Ar]3d 45-4p(d) None of these |
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Answer» d Explanation: |
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| 13. |
Which electron displacement effect explains the following correct order of acidity of carboxylic acids? Cl;CCOOH > CL;CHCOOH > CICH;COOH |
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Answer» INDUCTIVE effect. Explanation: More is the no.of -I effect showing groups, more is the ACIDITY |
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| 15. |
Explain isotopes with its application? |
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Answer» Answer: Isotopes can be defined as the variants of chemical elements that possess the same number of PROTONS and electrons, but a different number of neutrons. ... For EXAMPLE, the uranium-235 isotope can be represented as 23592U and the uranium-239 isotope can be represented as 23992U. Explanation: Radioactive isotopes have many useful applications. In medicine, for example, cobalt-60 is EXTENSIVELY employed as a radiation source to arrest the development of cancer. Other radioactive isotopes are used as tracers for diagnostic purposes as well as in RESEARCH on metabolic PROCESSES. |
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| 16. |
Name the element which have no Neutron |
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Answer» Answer: Hydrogen does not have any NEUTRON Explanation: Hydrogen does not have a neutron, as its nucleus is small in SIZE because of which it cannot accommodate any neutron heavier than it. It WOULD ALSO make the hydrogen atom UNSTABLE in nature. Hope this helps... |
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| 17. |
What is mean by water gas and water gas shift reaction |
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| 20. |
Derive the relationship between the degree of dissociation and concentration for weak base. |
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Answer» The degree of DISSOCIATION of a weak base is inversely proportional to square ROOT of its CONCENTRATION and is directly proportional to square root of volume of the SOLUTION containing 1 MOL of weak base. |
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| 21. |
A sample of compound A was heated in a Bunsen flame and no flame colour. On addition of sodiumhydroxide solution to a solution of A, a white precipitate formed that did not re-dissolve when more sodiumhydroxide was added. When nitric acid was added to a solution of A, the mixture bubbled giving a gas thatturned limewater cloudy.a Give the formula of the positive ion in A. ...............................................................................................................b Give the formula of the negative ion in A. ..............................................................................................................c Give the formula compound A. |
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Answer» Answer: That means an atom with a NEUTRAL charge is one where the number of electrons is EQUAL to the ATOMIC number. Ions are atoms with extra electrons or MISSING electrons. When you are missing an electron or two, you have a POSITIVE charge. When you have an extra electron or two, you have a negative charge. |
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| 22. |
Give reasons why Ne has higher atomic radii than F |
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Answer» Explanation: As we know, NEON has LOW van DER waals force, and in neon the electrons are more concentrated, and THEREFORE the attraction force from the nucleus DECREASES, resulting in greater neon size than fluorine. |
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| 23. |
What are the factors which bring about chemical reaction or changes |
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Answer» Reactions occur when two REACTANT molecules effectively collide, each having minimum energy and correct orientation. Reactant concentration, the physical state of the reactants, and surface area, temperature, and the PRESENCE of a catalyst are the FOUR main factors that affect reaction rate Hope it's helpful Have a nice day Plz FOLLOW and thanks my answers Plz mark me as brainliest... |
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| 25. |
QS-1. Fill in the blanks [6*1=6]a) .......... help to increase the production of food |
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Answer» MANY types of FERTILIZERS are used to increase FERTILITY and PRESENCE of nitrogen which helps in incresing crop(food) production. |
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| 26. |
6. Number of NMR signals obtained in CH3OCH3 will beo 6O O12ОО3 |
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| 27. |
Which of the the solutions is more concentrated?Solution A: 40 gm salt 400 gm waterSolution B: 40 gm salt in 400 gm solution. Justify.(What are the dispersed phase and the dispersion medium in Aeroso() What will be your observation when crystals of iodine are heated in aconical flask the mouth of the flask being kept closed with cotton plug What isthe name of the phenomenon?Baker A contams a starch solution and beaker B contains a suspension ofchalk powder and water. Both the beakers are kept undisturbed for 2 hours. Whatwill be your nation in each beaker at the end of 2 bours?Which statement of Dalton's atomic theory is the result of law of conversation of mass? |
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Answer» Answer: Explanation: Plant cells additionally possess large, fluid-filled vesicles called vacuoles within their cytoplasm. Vacuoles typically COMPOSE about 30 percent of a cell's VOLUME, but they can fill as much as 90 percent of the intracellular space. Plant cells use vacuoles to adjust their size and TURGOR pressure. Vacuoles usually account for CHANGES in cell size when the cytoplasmic volume stays CONSTANT. |
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| 28. |
Why tertiary alcohols are resistant to oxidation? |
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Answer» Answer: Tertiary ALCOHOLS (R3COH) are RESISTANT to oxidation because the carbon atom that carries the OH group does not have a hydrogen atom attached but is instead bonded to other carbon atoms. ... The carbon-to-hydrogen BONDING is easily broken under oxidative CONDITIONS, but carbon-to-carbon BONDS are not. Explanation: follow me like my answer |
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| 29. |
What is the standard state of carbon? |
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Answer» Answer: graphite is the standard state of carbon. Explanation: ALTHOUGH graphite and DIAMOND are both forms of elemental carbon, graphite is SLIGHTLY more stable at 1 atm pressure and 25°C than diamond is. Given enough time, diamond will revert to graphite under these CONDITIONS. |
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| 30. |
A salt which reacts with ammonium hydroxide to give a reddish brown precipitate. Give the word equation |
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Answer» Answer: Ferric chloride Ferric chloride GIVES reddish brown PERCIPITATE of Fe(OH)3 with ammonium HYDROXIDE.
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| 31. |
......helps us to control the amount of blank space to the left and right of theindividual paragraphs of MS Word document.4. We can add borders and shading to.... and.... 5........helps to arrange data in alphabetical order.6. Spacing between the paragraphs is known as..... spacing7. A..... creates a large capital letter in between the paragraph.8. ....... and...... helps to make an article highlighted and wellorganized.9........helps to quickly format text.10. A...... is a set of formatting characteristics, such as font name, size, color, paragraphalignment and spacing. |
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Answer» Answer: Introduction  An important part of creating effective documents lies in the DOCUMENT design. When designing your document and making formatting decisions, you will need to know how to modify the spacing. In this lesson, you will learn how to modify the LINE and paragraph spacing in various ways. Line spacing Adjusting the line spacing will affect how easily your document can be read. You can increase spacing to improve readability, or reduce it to fit more text on the page. Optional: You can download this example for extra practice. About line spacing Line spacing can either be measured in lines or points. For example, when text is double spaced, the line spacing is two lines high. On the other hand, you might set 12-point text with SOMETHING like 15-point spacing, which gives enough height for the text plus a little extra space. You can reduce the line spacing to fit more lines on the page, or you can increase it to improve readability. Line spacing is also known as leading (pronounced to rhyme with wedding). To format line spacing: SELECT the text you want to format. Click the Line and Paragraph Spacing command in the Paragraph group on the Home tab. Select the desired spacing option from the drop-down menu.  From the drop-down menu, you can also select Line Spacing Options to OPEN the Paragraph dialog box. From here, you can adjust the line spacing with even more precision.  If you select At least or Exactly in the Paragraph dialog box, the line spacing will be measured in points. Otherwise, it will be measured in lines. Paragraph spacing Just as you can format spacing between lines in your document, you can choose spacing options between each paragraph. Typically, extra spaces are added between paragraphs, headings, or subheadings. Extra spacing between paragraphs can make a document easier to read. To format paragraph spacing: Click the Line and Paragraph Spacing command on the Home tab. Select Add Space Before Paragraph or Remove Space After Paragraph from the drop-down menu.  From the drop-down menu, you can also select Line Spacing Options to open the Paragraph dialog box. From here, you can control exactly how much space there is before and after the paragraph.  |
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| 32. |
removal of water from mixture by freezing drawing involves cooling below 0°C reduction of pressure below the triple point and subsequent warming. how do you explain in terms of phase diagram of water |
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Answer» EVAPORATION is a phase transition from the liquid phase to the GAS phase that occurs at temperatures below the boiling point at a given pressure. For molecules of a liquid to evaporate, they must be located near the surface, be moving in the proper direction, and have sufficient kinetic ENERGY to overcome liquid-phase intermolecular forces. Boiling is a phase transition from the liquid phase to the gas phase that occurs at or above the boiling TEMPERATURE. Boiling is the rapid vaporization of a liquid and occurs when a liquid is heated to its boiling point. A liquid’s boiling point is the temperature at which the vapor pressure of the liquid is equal to the pressure EXERTED on the liquid by the surrounding environment (air). |
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| 33. |
Calculate the mass of 0.5 moles of NH3 |
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Answer» Answer: 17 g hope this HELPS u pls MARK me as BRAINLIEST |
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| 35. |
The pressure of gas having volume 1800ml originally occupying 300ml at 6atms .pressure |
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Answer» 1 atms Explanation: as p1v1=p2v2 therfore p2 = 6atms ×300ml WHOLE DIVIDED by 1800 ML = 1atms |
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| 36. |
A reaction occurs spantanesoel is |
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Answer» Decrease of FREE ENERGY during the process under constant temperature and pressure provides a measure of its spontaneity. Explanation: |
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| 37. |
The correct d-electron configuration showing the spin orbit coupling is .....A. t2g6eg0b. t2g4eg2c. t2g4eg0d. t2g3eg2.. |
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| 38. |
Q6a) Calculate the number ofChloride ions in 222 g ofCalcium Chloride (CaCl2). |
Answer» Given :To find :Number of Chloride ions Formula used :
Additional points :◕ Molar mass of Calcium chloride = 111 g/mol ◕ Solution :✪ Number of MOLES of CaCl2 = 222÷111 ➠ Number of moles of CaCl2 = 2mol ✪ Number of molecules of CaCl2 = 2 × Avogadro's number ✪ 1 molecule of CaCl2 contain 2 ion of Cl ➠ Number of Chloride ion = 2 × (2 × 6.02 ×10²³) ➠ Number of Chloride ions = 24.08 × 10²³ ➠ Number of Chloride ions = 2.408 × 10²⁴ ANSWER :Number of Chloride ions = 2.408 × 10²⁴ |
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| 39. |
State Raoult’s law for a solution containing non-volatile solute dissolved in volatile solvent. |
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Answer» RAOULT's law states that the relative LOWERING of vapour pressure of a solution CONTAINING a non- volatile SOLUTE is equal to the mole FRACTION of the solute in the solution. |
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| 40. |
Assertion : Equilibrium whether in a physical or in a chemical system, is always of dynamic nature. Reason : the molar concentration of a pure solid or liquid is constant in a heterogeneous equilibrium mixture. *a) Assertion and reason both are correct statements and reason is correct explanation for assertion.b) Assertion and reason both are correct statements but reason is not correct explanation for assertion.c) Assertion is correct statement but reason is wrong statement.d) Assertion is wrong statement but reason is correct statement |
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Answer» hsjxjcjc N. nvncnvvnvñvvvyuvvav Explanation: jxjjfcnvnnvjcjçnfnvnvnmcmcnçcmmvñmcmvm nncnncncjxhhcbbcn |
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| 41. |
(iii) Write the formula of the compound(a) magnesiumoxide |
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Answer» MgO hope this HELPS u pls MARK me as BRAINLIEST |
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| 42. |
What are the primary cells |
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Answer» Explanation: PRIMARY cell is a BATTERY that is designed to be used once and discarded, and not recharged with ELECTRICITY and reused LIKE a SECONDARY cell. In general, the electrochemical reaction occurring in the cell is not reversible, rendering the cell unrechargeable. |
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| 44. |
Shown on the graph are the relative values of the first ionisation energies of four elements that have consecutive atomic numbers. One of the elements reacts with magnesium to form an ionic compound with formula MgX2. Which element could be X? |
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Answer» Answer: that have consecutive ATOMIC numbers. ONE of the ELEMENTS reacts with magnesium to FORM an ionic compound with formula MgX2. Which ELEMENT could be X |
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| 45. |
Q. 8 Write the conjugate acid of SO ion |
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Answer» ANSWER OH − is the conjugate ACID of the base O 2 −
is also conjugate base of the acid H 2 O . According to BRONSTED -laury theory of acids and bases, a base is the one which ACCEPTS a PROTON. i.e, H + and forms a corresponding conjugate acid. Option (B) is correct answer |
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| 46. |
Qba) Calculate the number of 2 poChloride ions in 222 g of CalciumChloride (CaCl,). |
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Answer» Answer: Hence, there are 1.2044 X 1024 CA2+ ions and 2.4088 X 1024 Cl- ions in 222 G of CACL2. |
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| 47. |
Compressbility fecter of gas under critical is |
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Answer» Answer: 3/8 hope this HELPS u pls MARK me as BRAINLIEST |
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| 48. |
half liter of air under 360mm pressure is compressed to 200ml.Taking the temperature to remain constant.find the new pressure |
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Answer» Answer: Ideal GAS equation is given by pV=nRT ...(i) For OXYGEN, p=1atm,V=1L,n=n0 Therefore equation (i) becomes ∴1×1=no2RT ⇒no2=RT1 For NITROGEN p=0.5atm,V=2L,n=nN ∴0.5×2=nN2RT ⇒nN2=RT1 For mixture of gas pmixVmix=nmixRT Here, nmix=nO+nN2 ∴RTpmixVmix=RT1+RT1 ⇒p |
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| 49. |
Now....hows this??Never forget to respect the person who u love cause when u wake up at night you'll find the moon missing while counting the stars |
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Answer» AMAZING (≧▽≦) |
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| 50. |
The natural process showing the interconversion of the states of water is called |
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Answer» evapouration Explanation: |
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