NCERT Solutions for Class 10 Science Chapter 2 Intext Questions
NCERT Solutions Class 10 Science Chapter 2 (Acids, Bases and Salts)
Page Number: 18
Question 1
You have been provided with three test tubes. One of them contains distilled water and the other two contain an acidic solution and a basic solution, respectively. If you are given only red litmus paper, how will you identify the contents of each test tube?
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NCERT Solutions Class 10 Science Chapter 2 (Acids, Bases and Salts)
Page Number: 22
Question 1
Why should curd and sour substances not be kept in brass and copper vessels ?
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Question 2
Which gas is usually liberated when an acid reacts with a metal ? Illustrate with an example. How will you test for the presence of this gas?
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Question 3
Metal compound A reacts with dilute hydrochloric acid to produce effervescence. The gas evolved extinguishes a burning candle. Write a balanced chemical equation for the reaction if one of the compounds formed is calcium chloride.
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NCERT Solutions Class 10 Science Chapter 2 (Acids, Bases and Salts)
Page Number: 25
Question 1
Why do HCl, HNO3, etc show acidic characters in aqueous solutions while solutions of compounds like alcohol and glucose do not show acidic character?
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Question 2
Why does an aqueous solution of an acid conduct electricity?
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Question 3
Why does dry HCl gas not change the colour of the dry litmus paper?
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Question 4
While diluting an acid, why is it recommended that the acid should be added to water and not water to the acid?
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Question 5
How is the concentration of hydronium ions (H3O+) affected when a solution of an acid is diluted ?
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Question 6
How is the concentration of hydroxide ions (OH–) affected when excess base is dissolved in a solution of sodium hydroxide?
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NCERT Solutions Class 10 Science Chapter 2 (Acids, Bases and Salts)
Page Number: 28
Question 1
You have two solutions A and B. The pH of solution A is 6 and pH of solution B is 8. Which solution has more hydrogen ion concentration? Which of this is acidic and which one is basic?
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Question 2
What effect does the concentration of H+ (aq) ions have on the nature of the solution?
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Question 3
Do basic solutions also have H+ (aq) ions ? If yes, then why are these basic?
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Question 4
Under what soil condition do you think a farmer would treat the soil of his fields with quick lime (calcium oxide) or slaked lime (calcium hydroxide) or chalk (calcium carbonate)?
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NCERT Solutions Class 10 Science Chapter 2 (Acids, Bases and Salts)
Page Number: 33
Question 1
What is the common name of the compound CaOCl2?
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Question 2
Name the substance which on treatment with chlorine yields bleaching powder.
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Question 3
Name the sodium compound which is used for softening hard water.
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Question 4
What will happen if a solution of sodium hydrogen carbonate is heated. Give the equation of the reaction involved ?
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Question 5
Write an equation to show the reaction between plaster of Paris and water.
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NCERT Solutions for Class 10 Science Chapter 2 Exercise Questions (Textbook Chapter End Questions)
NCERT Solutions Class 10 Science Chapter 2
Question 1
A solution turns red litmus blue, its pH is likely to be
(a) 1
(b) 4
(c) 5
(d) 10
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Question 2
A solution reacts with crushed-egg shells to give a gas that turns lime water milky. The solution contains
(a) NaCl
(b) HCl
(c) LiCl
(d) KCl
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Question 3
10 mL of a solution of NaOH is found to be completely neutralised by 8 mL of a given solution of HC1. If we take 20 mL of the same solution of NaOH, the amount of HC1 solution (the same solution as before) required to neutralise it will be
(a) 4 mL
(b) 8 mL
(c) 12 mL
(d) 16 mL
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Question 4
Which one of the following types of medicines is used for treating indigestion?
(a) Antibiotic
(b) Analgesic
(c) Antacid
(d) Antiseptic
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Question 5
Write word equations and then balanced equations for the reaction taking place when
(a) dilute sulphuric acid reacts with zinc granules
(b) dilute hydrochloric acid reacts with magnesium ribbon
(c) dilute sulphuric acid reacts with aluminium powder
(d) dilute hydrochloric acid reacts with iron filing
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Question 6
Compounds such as alcohol and glucose also contain hydrogen but are not categorised as acids. Describe an activity to prove it.
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Question 7
Why does distilled water not conduct electricity, whereas rainwater does?
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Question 8
Why do acids not show acidic behaviour in the absence of water?
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Question 9
Five solutions A, B, C, D and E when tested with universal indicator showed pH as 4, 1, 11, 7 and 9 respectively. Which solution is
(a) Neutral
(b) Strongly alkaline
(c) Strongly acidic
(d) Weakly acidic
(e) Weakly alkaline
Arrange the pH in increasing order of hydrogen ion concentration.
Answer:
Question 10
Equal lengths of magnesium ribbons are taken in test tubes A and B. Hydrochloric acid (HCl) is added to test tube A, while acetic acid (CH3COOH) is added to test tube B. In which test tube will the fizzing occur more vigorously and why?
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Question 11
Fresh milk has a pH of 6. How do you think the pH will change as it turns into curd ? Explain your answer.
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Question 12
A milkman adds a very small amount of baking soda to fresh milk.
(a) Why does he shift the pH of the fresh milk from 6 to slightly alkaline ?
(b) Why does this milk take a long time to set as curd ?
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Question 13
Plaster of Paris should be stored in a moisture proof container. Explain why?
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Question 14
What is a neutralisation reaction ? Give two examples.
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Question 15
Give two important uses of washing soda and baking soda.
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1) Equations And Chemical Reactions
2) Chemical Formulas
3) Chemical Reaction Types
4) Have You Noticed How Oxidation Reactions Affect Your Daily Life? Y Life?
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Excellent study materials are required for students studying in Class 10 CBSE Chemistry Chapter 2 Acids, Bases and Salts, according to NCERT Solutions Class 10 Science Chapter 2. Subject matter specialists at Bhautik Study have created these NCERT Solutions in accordance with the most recent CBSE Syllabus. It is crucial that students use NCERT Solutions Class 10 Science Chapter 2 to assist them learn how to solve and study so they can become familiar with the kinds of questions that are posed in the chapter as well as chemical reactions and equations.
The key topics covered in Chapter 2 of NCERT Solutions Class 10 Science Chapter 2 are creating chemical equations and writing and balancing equations. Additionally, students study the fundamentals of chemical reactions in this chapter, along with their various varieties and the practical applications of chemical oxidation reactions. An summary of the chapter’s key ideas is given in the NCERT Solutions Class 10 Science Chapter 2, which also helps students become knowledgeable about crucial subjects like creating and balancing chemical equations.
There are about four problems from Science Chapter 2 of the Class 10 NCERT Solutions each year, and they carry a good weight. The majority of the questions in this chapter are practice-based questions.
In our daily lives, chemical reactions are significant phenomena. Numerous chemical reactions occur in daily life, such as the rusting of iron, the curdling of milk, respiration, digestion, and development. Students need to practise using this NCERT Solution Class 10 Science Chapter 2 in order to do well on the CBSE Class 10 test.
