CBSE Class 10 Chemistry Acids Bases And Salts Worksheet Set E

Read and download free pdf of CBSE Class 10 Chemistry Acids Bases And Salts Worksheet Set E. Download printable Science Class 10 Worksheets in pdf format, CBSE Class 10 Science Chapter 2 Acids Bases Salts Worksheet has been prepared as per the latest syllabus and exam pattern issued by CBSE, NCERT and KVS. Also download free pdf Science Class 10 Assignments and practice them daily to get better marks in tests and exams for Class 10. Free chapter wise worksheets with answers have been designed by Class 10 teachers as per latest examination pattern

Chapter 2 Acids Bases Salts Science Worksheet for Class 10

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Class 10 Science Chapter 2 Acids Bases Salts Worksheet Pdf

ACIDS,BASES AND SALTS

Assertion and Reason Type MCQs :

Following questions consists of two statements – Assertion (A) and Reason (R). Answer these questions selecting the appropriate option given below:
A. Both assertion and reason are true, and reason is the correct explanation of assertion.
B. Both assertion and reason are true, but reason is not the correct explanation of assertion.
C. Assertion is true but reason is false.
D. Assertion is false and reason is true.\

Question. Assertion (A): The HCl gas shows acidic behaviour in the water.
Reason(R): The pH of dry HCl gas is 1.5.

Answer: C

Question. Assertion: NaOH reacts with zinc metal and produces hydrogen gas.
Reason: Acids react with active metals to produce hydrogen gas.

Answer: B

Question. Assertion(A): Washing soda is a chemical compound that can be used to remove stubborn stains from laundry
Reason(R):The sodium carbonate in washing soda "softens" water.

Answer: B

Question. Assertion (A): Phenolphthalein is a synthetic acid-base indicator.
Reason(R): Phenolphthalein does not give any colour with acids but gives pink colour with bases.

Answer: A

Question. Assertion(A): Baking powder is used in making cake instead of using only baking soda.
Reason(R) : Baking powder contains Tartaric acid which reacts with sodium carbonate and removes bitter taste.

Answer: C

Question. Assertion (A): Honey bee-sting injects an acid in the skin which causes pain and irritation.
Reason (R): Use of mild base like baking soda on the stung area gives relief.

Answer: B

Question. Assertion (A): The organic compounds such as C6H12O6 and C2H5OH contain hydrogen but they do not conduct electricity in the water.
Reason(R): Acids produce H3O+ ions in the solutions.

Answer: B

Question. Assertion(A): Soda-acid fire extinguisher contains sodium hydrogen carbonate and sulphuric acid.
Reason(R): Sulphuric acid mixes with sodium hydrogen carbonate solution and produces a lot of CO2 gas, which forms a blanket over fire and cuts it off from the supply of the air to the burning substance and the fire stops.

Answer: A

Question. Assertion (A): The acid must always be added to water with constant stirring.
Reason(R): Mixing of an acid with water decreases the conc. of H+ ions per unit volume.

Answer: B


CASE BASED MCQs

I. Bleaching powder is a pale yellowish powder. It is soluble in water but due to the presence of impurities, we never observe a clear solution. Its chemical formula is Ca(OCl2) with its chemical name as Calcium hypochlorite. Bleaching powder is also called calcium chlorohypochlorite because it is considered as a mixed salt of hydrochloric acid and hypochlorous acid.

Question. One of the following cannot be considered as the use of bleaching powder
A. It is an oxidising agent.
B. it is used for disinfecting water.
C. it bleaches cotton and linen in the textile industry.
D.. it releases Oxygen gas on heating which can be used for aeration of water bodies.

Answer: D

Question. The compound lime water that is used in the manufacture of bleaching powder is
A.Clear solution of Ca(OH)2.
B.Milky Suspension of Ca(OH)2.
C.Clear solution of CaCl2.
D.Clear solution of CaCO3.

Answer: A

Question. One of the products obtained during the electrolysis of aqueous Sodium Chloride(brine) used in the preparation of Bleaching powder is.
A. Sodium metal at cathode
B.Hydrogen gas
C. Chlorine gas
D. Slaked lime.

Answer: C

II. Water of crystallisation is the fixed number of water molecules present in one formula unit of a salt. water(s) of crystallization or water(s) of hydration are water molecules that are present inside crystals. Water is often incorporated in the formation of crystals from aqueous solutions. A salt with associated water of crystallization is known as a hydrate.

Question. The temperature at which Gypsum (CaSO4 . 2H2O) into Plaster of Paris(CaSO4.1/2 H2O
A.373 K
B.273 K
C.374 K
D.375 K

Answer: A

Question. The formula of Plaster of Paris is CaSO4. ½ H2O, it is to be noted that half water molecule is shown to be attached as water of crystallisation. This indicates that
A. Only half water molecule is present in Calcium Sulphate crystal
B. Two formula units of Calcium Sulphate share one molecule of water.
C. Two formula units of calcium Sulphate share two molecules of water
D. Two formula units of Calcium Sulphate share one and a half molecules of water.

Answer: B

Question. Which of the following salt does not contain water of crystallisation?
A. Blue Vitriol
B.Baking Soda
C.Washing Soda
D.Gypsum.

Answer: B

 
1. What are the general characteristics of acids?
 
2. What will be the action of the following substances on litmus paper a) Dry HCl gas
 
b) moistened NH3 gas c) lemon juice d) carbonated soft drink e) curd f) soap solution.
 
3. Name the acid present in the ant sting.Also give the common method to get relief from the discomfort caused by the ant sting.
 
4. What happens when any acid is added to egg shell?
 
5. A student prepared solutions of an acid and a base in two separate beakers. She forgot to label the beakers and litmus paper is not available in the lab. Since both the solutions are colourless how will she distinguish between the two?
 
6. How would you distinguish between baking powder and washing soda by heating?
 
7. What are the practical applications of neutralization reaction?
 
8. Salt A commonly used in bakery products on heating gets converted into another salt B which itself is used for removal of hardness of water and a gas C is evolved. The gas C when passed through lime water turns milky. Identify A, B and C.
 
9. When zinc metal is treated with a dilute solution of strong acid, agas is evolved. Name the gas and write the chemical equation of the reaction involved and also write a test to detect the gas formed.
 
10. For baking cake baking powder is used. If at home your mother uses baking soda instead
of baking powder in cake,
 
i) How will it affect the taste of cake and why?
ii) How can baking soda be converted into baking powder?
iii) What is the role of tartaric acid added to baking soda?
 
11. A dry pellet of a common base B, when kept in open absorbs moisture and turns sticky. The compound is also a byproduct of Chlor-alkali process. Identify B. What type of reaction occurs when B is treated with acidic oxide? Write a balanced chemical equation for one such solution.
 
12. A sulphate salt which is white soft substance is used in making toys. When this compound is left in open for some time, it becomes a solid mass which cannot be used for molding purposes. Identify the salt, why does it show such a behaviour? Give the reaction involved.
 
13. Identify the compound ‘ X’ on the basis of the reactions given below. Also write the name and formula of A,B & C .
 
CBSE Class 10 Chemistry Acids Bases And Salts Worksheet Set E
 
14. What happens when a solution of sodium hydrogen carbonate is heated? Write the chemical equation of the reaction involved.
 
15. State the chemical property in each case on which the following uses of baking soda are based :- i) as an antacid ii) as a constituent of baking powder.
 
16. A compound X of sodium forms a white powder. It is a constituent of baking powder and is used in some antacid prescriptions. When heated, X gives out a gas and steam. The gas forms a white precipitate with limewater. Write the chemical formula and name of X and the chemical equation for its decomposition on heating. What is its role in baking powder and in antacids?
 
17. How is common salt prepared from sea water?
 
18. a) What is pH scale and how is it related to hydronium ion concentration?
 
b) Fresh milk has a pH of 6. When it changes into curd, will its pH value increase or decrease? Why?
 
19. Explain why an aqueous solution of sodium sulphate is neutral while an aqueous solution of sodium carbonate is basic in nature.
 
20. What is the ideal soil pH for the growth of plants? Explain with the help of an activity how you will test the pH of a sample of soil collected from your locality?
 
21. Write one point of difference between each of the following:
 
(a) A hydrated salt and an anhydrous salt.
(b) Washing soda and soda ash.
(c) Baking soda and baking powder.
 
22. Why do acidic or basic solutions conduct electricity?
 
23. A metal compound ‘A’ reacts with dilute sulphuric acid to produce a gas which extinguishes a burning candle. Identify the compound ‘A’ and a gas produced. Write a balanced chemical equation for the reaction if one of the compounds formed in the reaction is sodium sulphate.
 
24. State reasons for the following statements:
 
(a) Tap water conducts electricity, whereas distilled water does not.
 
(b) Dry hydrogen chloride gas does not turn blue litmus red, whereas hydrochloric acid does.
(c) During summer season, a milkman usually adds a very small amount of baking soda to fresh milk.
(d) For dilution of an acid, acid is added into water and not water into acid.
(e) Ammonia is a base but does not contain a hydroxyl group.

 

Please click on below link to download CBSE Class 10 Chemistry Acids Bases And Salts Worksheet Set E

Chapter 06 Life Processes
CBSE Class 10 Biology Excretion Set A
CBSE Class 10 Biology Excretion Set B
CBSE Class 10 Biology Excretion Set C
CBSE Class 10 Biology Heterotrophic Nutrition Worksheet Set A
CBSE Class 10 Biology Heterotrophic Nutrition Worksheet Set B
CBSE Class 10 Biology Life Processes Nutrition In Animals Worksheet
CBSE Class 10 Biology Life Processes Nutrition In Plants Worksheet
CBSE Class 10 Biology Life Processes Nutrition Worksheet Set A
CBSE Class 10 Biology Life Processes Nutrition Worksheet Set B
CBSE Class 10 Biology Life Processes Nutrition Worksheet Set C
CBSE Class 10 Biology Life Processes Nutrition Worksheet Set D
CBSE Class 10 Biology Life Processes Reference Materials Worksheet
CBSE Class 10 Biology Life Processes Respiration In Animals Worksheet
CBSE Class 10 Biology Life Processes Respiration Worksheet Set A
CBSE Class 10 Biology Life Processes Respiration Worksheet Set B
CBSE Class 10 Biology Life Processes Respiration Worksheet Set C
CBSE Class 10 Biology Life Processes Respiration Worksheet Set D
CBSE Class 10 Biology Life Processes Transporation Worksheet Set A
CBSE Class 10 Biology Life Processes Transporation Worksheet Set B
CBSE Class 10 Biology Life Processes Transporation Worksheet Set C
CBSE Class 10 Biology Life Processes Transporation Worksheet Set D
CBSE Class 10 Biology Life Processes Worksheet
CBSE Class 10 Biology Life Processes Worksheet Set A
CBSE Class 10 Biology Life Processes Worksheet Set B
CBSE Class 10 Biology Life Processes Worksheet Set C
CBSE Class 10 Biology Life Processes Worksheet Set D
CBSE Class 10 Biology Life Processes Worksheet Set E
Chapter 09 Heredity and Evolution
CBSE Class 10 Biology Heredity And Evolution Set D
Chapter 13 Magnetic Effects of Electric Current
CBSE Class 10 Physics Magnetic Effects of Electric Current Worksheet Set E

CBSE Class 10 Science Chapter 2 Acids Bases Salts Worksheet

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