{"id":11988,"date":"2022-05-24T04:30:06","date_gmt":"2022-05-23T23:00:06","guid":{"rendered":"https:\/\/mcq-questions.com\/?p=11988"},"modified":"2022-05-16T15:18:37","modified_gmt":"2022-05-16T09:48:37","slug":"mcq-questions-for-class-7-science-chapter-5","status":"publish","type":"post","link":"https:\/\/mcq-questions.com\/mcq-questions-for-class-7-science-chapter-5\/","title":{"rendered":"MCQ Questions for Class 7 Science Chapter 5 Acids, Bases and Salts"},"content":{"rendered":"

Students are advised to practice the NCERT MCQ Questions for Class 7 Science Chapter 5 Acids, Bases and Salts with Answers Pdf free download is available here. MCQ Questions for Class 7 Science with Answers<\/a> are prepared as per the Latest Exam Pattern. Students can solve these Acids, Bases and Salts Class 7 MCQs Questions with Answers and assess their preparation level.<\/p>\n

Acids, Bases and Salts Class 7 MCQs Questions with Answers<\/h2>\n

Solving the Acids, Bases and Salts Multiple Choice Questions of Class 7 Science Chapter 5 MCQ can be of extreme help as you will be aware of all the concepts. These MCQ Questions on Acids, Bases and Salts Class 7 with answers pave for a quick revision of the Chapter thereby helping you to enhance subject knowledge. Have a glance at the MCQ of Chapter 5 Science Class 7 and cross-check your answers during preparation.<\/p>\n

Question 1.
\nWhen CO2<\/sub> gas is passed through limewater, it turns milky. Which of the following compounds is responsible for this milkiness ?
\n(a) Calcium oxide
\n(b) Calcium chloride
\n(c) sodium carbonate
\n(d) Calcium carbonate<\/p>\n

\nAnswer<\/span><\/summary>\n

(d) Calcium carbonate
\nCalcium carbonate is responsible for this milkiness.<\/p>\n<\/details>\n

\n

Question 2.
\nWhich of the following ion is responsible for the acidic nature of hydrochloric acid ?
\n(a) Hydrogen ion
\n(b) Hydroxide ion
\n(c) Chloride ion
\n(d) Hydrochloride ion<\/p>\n

\nAnswer<\/span><\/summary>\n

(a) Hydrogen ion
\nHydrogen ion is responsible for the acidic nature of hydrochloric acid.<\/p>\n<\/details>\n

\n

Question 3.
\nDistilled water is:
\n(a) acidic
\n(b) basic
\n(c) neutral
\n(d) none of these<\/p>\n

\nAnswer<\/span><\/summary>\n

(c) neutral
\nDistilled water is neutral.<\/p>\n<\/details>\n

\n

Question 4.
\nAmmonia that turns red litmus blue is:
\n(a) acidic
\n(b) basic
\n(c) neutral
\n(d) none of these<\/p>\n

\nAnswer<\/span><\/summary>\n

(b) basic
\nAmmonia is basic.<\/p>\n<\/details>\n

\n

Question 5.
\nAn antacid tablet is given to a person when he suffers from:
\n(a) obesity
\n(b) acidity
\n(c) dog bite
\n(d) none of these<\/p>\n

\nAnswer<\/span><\/summary>\n

(b) acidity
\nAn antacid is a tablet of curing acidity.<\/p>\n<\/details>\n

\n

Question 6.
\nAnt\u2019s bite injects:
\n(a) acetic acid
\n(b) formic acid
\n(c) hydrochloric acid
\n(d) none of these<\/p>\n

\nAnswer<\/span><\/summary>\n

(b) formic acid
\nAnt\u2019s bites injects formic acid.<\/p>\n<\/details>\n

\n

Question 7.
\nThe acid that our stomach releases is:
\n(a) sulphuric acid
\n(b) nitric acid
\n(c) hydrochloric acid
\n(d) formic acid<\/p>\n

\nAnswer<\/span><\/summary>\n

(c) hydrochloric acid
\nOur stomach releases hydrochloric acid (HCl).<\/p>\n<\/details>\n

\n

Question 8.
\nNeutralisation reaction is the reaction between:
\n(a) acid and base
\n(b) salt and water
\n(c) base and salt
\n(d) acid and salt<\/p>\n

\nAnswer<\/span><\/summary>\n

(a) acid and base
\nNeturalisation reaction is between acid and base.<\/p>\n<\/details>\n

\n

Question 9.
\nWhen the soil is too acidic, it is treated with:
\n(a) salt
\n(b) water
\n(c) base
\n(d) acid<\/p>\n

\nAnswer<\/span><\/summary>\n

(c) base
\nIf the soil is acidic, it is treated with base.<\/p>\n<\/details>\n

\n

Question 10.
\nQuick lime is used in soil when the soil is:
\n(a) basic
\n(b) acidic
\n(c) salty
\n(d) neutral<\/p>\n

\nAnswer<\/span><\/summary>\n

(b) acidic
\nIf the soil is acidic quick lime is used in soil.<\/p>\n<\/details>\n

\n

Question 11.
\nIf the soil is too basic, it is treated with:
\n(a) quicklime
\n(b) salt
\n(c) organic matter
\n(d) water<\/p>\n

\nAnswer<\/span><\/summary>\n

(c) organic matter
\nThe soil is basic so it is treated with organic matter.<\/p>\n<\/details>\n

\n

Question 12.
\nThe factory waste are neutralised by adding:
\n(a) acidic substances
\n(b) salts
\n(c) basic substances
\n(d) water<\/p>\n

\nAnswer<\/span><\/summary>\n

(c) basic substances
\nThe factory waste are neutralised by basic substances.<\/p>\n<\/details>\n

\n

Question 13.
\nSoap is:
\n(a) acidic
\n(b) basic
\n(c) neutral
\n(d) salt<\/p>\n

\nAnswer<\/span><\/summary>\n

(b) basic
\nSoap is basic.<\/p>\n<\/details>\n

\n

Question 14.
\nLitmus is a natural indicator which is extracted from:
\n(a) vinegar
\n(b) citrus fruits
\n(c) lichens
\n(d) spinach<\/p>\n

\nAnswer<\/span><\/summary>\n

(c) lichens
\nLitmus is extracted from lichens.<\/p>\n<\/details>\n

\n

Question 15.
\nThe colour of litmus in distilled water is:
\n(a) red
\n(b) green
\n(c) blue
\n(d) purple<\/p>\n

\nAnswer<\/span><\/summary>\n

(d) purple
\nThe colour of litmus in distilled water is purple.<\/p>\n<\/details>\n

\n

Question 16.
\nTartaric acid is found in:
\n(a) vinegar
\n(b) curd
\n(c) amla
\n(d) tamarind<\/p>\n

\nAnswer<\/span><\/summary>\n

(d) tamarind
\nTartaric acid is found in tamarind.<\/p>\n<\/details>\n

\n

Question 17.
\nCalcium hydroxide is found in:
\n(a) soap
\n(b) lime water
\n(c) vinegar
\n(d) milk of magnesia<\/p>\n

\nAnswer<\/span><\/summary>\n

(b) lime water
\nCalcium hydroxide is found in lime water.<\/p>\n<\/details>\n

\n

Question 18.
\nCitric acid is found in:
\n(a) fruits
\n(b) vegetables
\n(c) citrus fruits
\n(d) all of these<\/p>\n

\nAnswer<\/span><\/summary>\n

(c) citrus fruits
\nCitric acid is found in citrus fruits.<\/p>\n<\/details>\n

\n

Question 19.
\nBlue litmus paper is dipped in a solution. It remains blue. What is the nature of solution ?
\n(a) Acid and base
\n(b) Base and neutral
\n(c) Acid apd neutral
\n(d) None of these<\/p>\n

\nAnswer<\/span><\/summary>\n

(b) Base and neutral
\nThe nature of solution is base and neutral.<\/p>\n<\/details>\n

\n

Question 20.
\nWhat will the effect on turmeric with common salt ?
\n(a) Turns red
\n(b) No effect
\n(c) Turns blue
\n(d) Turns green<\/p>\n

\nAnswer<\/span><\/summary>\n

(a) Turns red
\nThe effect on turmeric with common salt turns red.<\/p>\n<\/details>\n

\n

Question 21.
\nAscorlic acid is found in:
\n(a) citrus fruits
\n(b) fruits
\n(c) curd
\n(d) spinach<\/p>\n

\nAnswer<\/span><\/summary>\n

(a) citrus fruits
\nAscorbic acid is found in citrus fruits.<\/p>\n<\/details>\n

\n

Question 22.
\nMagnesium hydroxide is found in:
\n(a) soap
\n(b) lime water
\n(c) milk of magnesia
\n(d) vegetable<\/p>\n

\nAnswer<\/span><\/summary>\n

(c) milk of magnesia
\nMagnesium hydroxide is found in milk of magnesia.<\/p>\n<\/details>\n

\n

Question 23.
\nWhich of the following turns red litmus blue ?
\n(a) Bases
\n(b) Acids
\n(c) Salts
\n(d) None of these<\/p>\n

\nAnswer<\/span><\/summary>\n

(a) Bases
\nBase turns red litmus blue.<\/p>\n<\/details>\n

\n

Question 24.
\nWhich of the following turns blue litmus red ?
\n(a) Bases
\n(b) Acids
\n(c) Salts
\n(d) None of these<\/p>\n

\nAnswer<\/span><\/summary>\n

(b) Acids
\nAcids turn blue litmus red.<\/p>\n<\/details>\n

\n

Question 25.
\nWhich of the following substances makes the fruits sound.
\n(a) Acids
\n(b) Salts
\n(c) Bases
\n(d) None of these<\/p>\n

\nAnswer<\/span><\/summary>\n

(a) Acids
\nAcids make the fruit sour.<\/p>\n<\/details>\n

\n

Question 26.
\nThe products of neutralisation reactions are:
\n(a) salt and water
\n(b) acid and base
\n(c) base and salt
\n(d) acid and water<\/p>\n

\nAnswer<\/span><\/summary>\n

(a) salt and water
\nIn neutralisation reaction acid and base react to give salt and water.<\/p>\n<\/details>\n

\n

Question 27.
\nWhich of the following is not an indicator ?
\n(a) Litmus
\n(b) Phenolphthalein
\n(c) Turmeric
\n(d) None of these<\/p>\n

\nAnswer<\/span><\/summary>\n

(d) None of these
\nAll these are indicators.<\/p>\n<\/details>\n

\n

Question 28.
\nWhich of the following turns pink solution of a phenolphthalein into a colourless solution ?
\n(a) Bases
\n(b) Acids
\n(c) Salt
\n(d) None of these<\/p>\n

\nAnswer<\/span><\/summary>\n

(b) Acids
\nAcids turn pink solution of phenolphthalein into a colourless solution.<\/p>\n<\/details>\n

\n

Question 29.
\nWhich of the following turns colourless solution of phenol\u00acphthalein into pink solution ?
\n(a) Salt
\n(b) Base
\n(c) Acid
\n(d) All of these<\/p>\n

\nAnswer<\/span><\/summary>\n

(b) Base
\nBase turns colourless solution of phenolphthalein into pink solution.<\/p>\n<\/details>\n

\n

Question 30.
\nAcids and bases react to produce:
\n(a) salt and acid
\n(b) salt and water
\n(c) salt and hydrogen gas
\n(d) none of these<\/p>\n

\nAnswer<\/span><\/summary>\n

(b) salt and water
\nAcid and bases react to produce salt and water.<\/p>\n<\/details>\n

\n

Question 31.
\nWhen a particular quantity of hydrochloric acid solution is mixed with a particular quantity of sodium hydroxide solution one gets a:
\n(a) basic solution
\n(b) acidic solution
\n(c) neutral solution
\n(d) none of these<\/p>\n

\nAnswer<\/span><\/summary>\n

(c) neutral solution
\nAcid and base react to give neutral solution.<\/p>\n<\/details>\n

\n

Question 32.
\nIn neutralisation reaction:
\n(a) heat is absorbed
\n(b) heat is evolved
\n(c) neither heat is absorbed nor evolved
\n(d) none of these<\/p>\n

\nAnswer<\/span><\/summary>\n

(b) heat is evolved
\nIn neutralisation reaction heat is evolved.<\/p>\n<\/details>\n

\n

Question 33.
\nAcids are in taste.
\n(a) sour
\n(b) sweet
\n(c) bitter
\n(d) salty<\/p>\n

\nAnswer<\/span><\/summary>\n

(a) sour
\nAcids are sour in taste.<\/p>\n<\/details>\n

\n

Question 34.
\nTaste of base is:
\n(a) sour
\n(b) salty
\n(c) sweet
\n(d) bitter<\/p>\n

\nAnswer<\/span><\/summary>\n

(d) bitter
\nTaste of base is bitter.<\/p>\n<\/details>\n

\n

Question 35.
\nWhich feels soapy on touch ?
\n(a) Acids
\n(b) Bases
\n(c) Both (a) and (b)
\n(d) None of these<\/p>\n

\nAnswer<\/span><\/summary>\n

(b) Bases
\nBases feel soapy on touch.<\/p>\n<\/details>\n

\n

Question 36.
\nWhich of the following are special type of substances that arc used to test whether a substance is acidic or basic ?
\n(a) Indicators
\n(b) Insulators
\n(c) Conductors
\n(d) None of these<\/p>\n

\nAnswer<\/span><\/summary>\n

(b) Insulators
\nIndicators are used to show different types of colours in acidic or basic solutions.<\/p>\n<\/details>\n

\n

Question 37.
\nThe solutions which do not change the colour of either red or blue litmus are known as:
\n(a) acidic solution
\n(b) basic solution
\n(c) salty solution
\n(d) neutral solution<\/p>\n

\nAnswer<\/span><\/summary>\n

(d) neutral solution
\nNeutral solution are neither acidic nor basic.<\/p>\n<\/details>\n

\n

Question 38.
\nHow will you classify the reaction between NaOH (aq) and HCl (aq)?
\n(a) Conbination
\n(b) Displacement
\n(c) Dissociation
\n(d) Neutralisation<\/p>\n

\nAnswer<\/span><\/summary>\n

(d) Neutralisation
\nNeutralisation is the reaction between NaOH and HCl.<\/p>\n<\/details>\n

\n

Match Column A with Column B:<\/span><\/p>\n

Question 1.<\/p>\n\n\n\n\n\n\n\n
Column-A<\/strong><\/td>\nColumn-B<\/strong><\/td>\n<\/tr>\n
(a) Acetic acid<\/td>\n(i) Spinach<\/td>\n<\/tr>\n
(b) Formic acid<\/td>\n(ii) Citrus fruits<\/td>\n<\/tr>\n
(c) Citric acid<\/td>\n(iii) Ant\u2019s sting<\/td>\n<\/tr>\n
(d) Oxalic acid<\/td>\n(iv) Vinegar<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\nAnswer<\/span><\/summary>\n\n\n\n\n\n\n\n
Column-A<\/strong><\/td>\nColumn-B<\/strong><\/td>\n<\/tr>\n
(a) Acetic acid<\/td>\n(iv) Vinegar<\/td>\n<\/tr>\n
(b) Formic acid<\/td>\n(iii) Ant\u2019s sting<\/td>\n<\/tr>\n
(c) Citric acid<\/td>\n(ii) Citrus fruits<\/td>\n<\/tr>\n
(d) Oxalic acid<\/td>\n(i) Spinach<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/details>\n
\n

Question 2.<\/p>\n\n\n\n\n\n\n\n
Column-A<\/strong><\/td>\nColumn-B<\/strong><\/td>\n<\/tr>\n
(a) Calcium hydroxide<\/td>\n(i) window cleaner<\/td>\n<\/tr>\n
(b) Ammonium hydroxide<\/td>\n(ii) soap<\/td>\n<\/tr>\n
(c) Sodium hydroxide<\/td>\n(iii) milk of magnesia<\/td>\n<\/tr>\n
(d) Magnesium hydroxide<\/td>\n(iv) lime water<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\nAnswer<\/span><\/summary>\n\n\n\n\n\n\n\n
Column-A<\/strong><\/td>\nColumn-B<\/strong><\/td>\n<\/tr>\n
(a) Calcium hydroxide<\/td>\n(iv) lime water<\/td>\n<\/tr>\n
(b) Ammonium hydroxide<\/td>\n(i) window cleaner<\/td>\n<\/tr>\n
(c) Sodium hydroxide<\/td>\n(ii) soap<\/td>\n<\/tr>\n
(d) Magnesium hydroxide<\/td>\n(iii) milk of magnesia<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/details>\n
\n

Question 3.<\/p>\n\n\n\n\n\n\n\n
Column-A<\/strong><\/td>\nColumn-B<\/strong><\/td>\n<\/tr>\n
(a) Acids turns<\/td>\n(i) Sour in taste<\/td>\n<\/tr>\n
(b) Bases turns<\/td>\n(ii) Blue litmus<\/td>\n<\/tr>\n
(c) Acid are<\/td>\n(iii) Bitter in taste<\/td>\n<\/tr>\n
(d) Bases are<\/td>\n(iv) Red litmus blue<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\nAnswer<\/span><\/summary>\n\n\n\n\n\n\n\n
Column-A<\/strong><\/td>\nColumn-B<\/strong><\/td>\n<\/tr>\n
(a) Acids turns<\/td>\n(ii) Blue litmus<\/td>\n<\/tr>\n
(b) Bases turns<\/td>\n(iv) Red litmus blue<\/td>\n<\/tr>\n
(c) Acid are<\/td>\n(i) Sour in taste<\/td>\n<\/tr>\n
(d) Bases are<\/td>\n(iii) Bitter in taste<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/details>\n
\n

State whether the following statements are \u2018True\u2019 or \u2018False\u2019:<\/span><\/p>\n

Question 1.
\nCurd, orange juice and vinegar are sour because they contain acids.<\/p>\n

\nAnswer<\/span><\/summary>\n

True<\/p>\n<\/details>\n

\n

Question 2.
\nSubstances which are bitter in taste are known as acids.<\/p>\n

\nAnswer<\/span><\/summary>\n

False<\/p>\n<\/details>\n

\n

Question 3.
\nNitric acid turns red litmus blue.<\/p>\n

\nAnswer<\/span><\/summary>\n

False<\/p>\n<\/details>\n

\n

Question 4.
\nSodium hydroxide turns blue litmus red.<\/p>\n

\nAnswer<\/span><\/summary>\n

False<\/p>\n<\/details>\n

\n

Question 5.
\nTooth decay is caused by the presence of a base.<\/p>\n

\nAnswer<\/span><\/summary>\n

False<\/p>\n<\/details>\n

\n

Question 6.
\nIndicator is a substance which shows different colours in acidic and basic solutions.<\/p>\n

\nAnswer<\/span><\/summary>\n

True<\/p>\n<\/details>\n

\n

Question 7.
\nSodium hydroxide and hydrochloric acid neutralise each other and form salt and water.<\/p>\n

\nAnswer<\/span><\/summary>\n

True<\/p>\n<\/details>\n

\n

Question 8.
\nLime water is found in tartaric acid.<\/p>\n

\nAnswer<\/span><\/summary>\n

False<\/p>\n<\/details>\n

\n

Question 9.
\nThe reaction between on acid and base is known as neutralisation.<\/p>\n

\nAnswer<\/span><\/summary>\n

True<\/p>\n<\/details>\n

\n

Question 10.
\nAn acid and a base neutralise each other and form a salt.<\/p>\n

\nAnswer<\/span><\/summary>\n

True<\/p>\n<\/details>\n

\n

Question 11.
\nThe solutions which change the colour of either red or blue litmus are known as neutral solution.<\/p>\n

\nAnswer<\/span><\/summary>\n

False<\/p>\n<\/details>\n

\n

Question 12.
\nDistilled are is acids.<\/p>\n

\nAnswer<\/span><\/summary>\n

False<\/p>\n<\/details>\n

\n

Question 13.
\nThe wastes of many factories contain acids.<\/p>\n

\nAnswer<\/span><\/summary>\n

True<\/p>\n<\/details>\n

\n

Question 14.
\nOrganic matter releases gases which neutralises the basic nature of the soil.<\/p>\n

\nAnswer<\/span><\/summary>\n

False<\/p>\n<\/details>\n

\n

Question 15.
\nOur stomach contains hydrochloric acid.<\/p>\n

\nAnswer<\/span><\/summary>\n

True<\/p>\n<\/details>\n

\n

Question 16.
\nWhen an ant bites, it injects the ascorlic acid into the skin.<\/p>\n

\nAnswer<\/span><\/summary>\n

False<\/p>\n<\/details>\n

\n

Consider the following statements:<\/span><\/p>\n

Question 1.
\nBoth acids and bases change colour of all indicators.<\/p>\n

\nAnswer<\/span><\/summary>\n

All four<\/p>\n<\/details>\n

\n

Question 2.
\nIf an indicator gives a colour change with an acid, it does not give a change with a base.<\/p>\n

\nAnswer<\/span><\/summary>\n

(a) and (d)<\/p>\n<\/details>\n

\n

Question 3.
\nIf an indicator change colour with a base, it does not change colour with an acid.<\/p>\n

\nAnswer<\/span><\/summary>\n

(b) and (c)<\/p>\n<\/details>\n

\n

Question 4.
\nChange of colour in an acid and a base depends on the type of the indicator. Which of the statements are correct ?<\/p>\n

\nAnswer<\/span><\/summary>\n

only<\/p>\n<\/details>\n

\n

Fill in the blanks:<\/span><\/p>\n

Question 1.
\nAn ……………………………. tablet is taken when you suffer from acidity.<\/p>\n

\nAnswer<\/span><\/summary>\n

antacid<\/p>\n<\/details>\n

\n

Question 2.
\nCalamine solution is applied on the skin when an ……………………………. bites.<\/p>\n

\nAnswer<\/span><\/summary>\n

ant<\/p>\n<\/details>\n

\n

Question 3.
\n……………………………. waste is neutralised before disposing it into the water bodies.<\/p>\n

\nAnswer<\/span><\/summary>\n

Factory<\/p>\n<\/details>\n

\n

Question 4.
\nAmmonia is found in household products, such as ……………………………. cleaners.<\/p>\n

\nAnswer<\/span><\/summary>\n

window<\/p>\n<\/details>\n

\n

Question 5.
\nAcids are ……………………………. in taste.<\/p>\n

\nAnswer<\/span><\/summary>\n

sour<\/p>\n<\/details>\n

\n

Question 6.
\n……………………………. are bitter in taste and soapy to touch.<\/p>\n

\nAnswer<\/span><\/summary>\n

Base<\/p>\n<\/details>\n

\n

Question 7.
\nSubstances which are neither acid nor basic are called ……………………………..<\/p>\n

\nAnswer<\/span><\/summary>\n

neutral<\/p>\n<\/details>\n

\n

Question 8.
\nSolution of substances that show different colours in acidic basic and neutral solutions are called …………………………….<\/p>\n

\nAnswer<\/span><\/summary>\n

indicators<\/p>\n<\/details>\n

\n

Question 9.
\nExcessive use of chemical fertilisers makes the ……………………………. acidic.<\/p>\n

\nAnswer<\/span><\/summary>\n

soil<\/p>\n<\/details>\n

\n

Question 10.
\nThe word acid comes from the Latin word ……………………………. which means sour.<\/p>\n

\nAnswer<\/span><\/summary>\n

acere<\/p>\n<\/details>\n

\n

Question 11.
\nThe chemical nature of such substances is ……………………………..<\/p>\n

\nAnswer<\/span><\/summary>\n

acidic<\/p>\n<\/details>\n

\n

Question 12.
\nLactic acid is found in ……………………………..<\/p>\n

\nAnswer<\/span><\/summary>\n

curd<\/p>\n<\/details>\n

\n

Hope the information shared regarding the NCERT MCQ Questions for Class 7 Science Chapter 5 Acids, Bases and Salts with Answers Pdf free download is true and genuine as far as our knowledge is concerned. If you feel any information regarding CBSE Class 7 Science Acids, Bases and Salts MCQs Multiple Choice Questions with Answers is missing do reach us and we will look into it and add it accordingly.<\/p>\n","protected":false},"excerpt":{"rendered":"

Students are advised to practice the NCERT MCQ Questions for Class 7 Science Chapter 5 Acids, Bases and Salts with Answers Pdf free download is available here. MCQ Questions for Class 7 Science with Answers are prepared as per the Latest Exam Pattern. Students can solve these Acids, Bases and Salts Class 7 MCQs Questions …<\/p>\n

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