Skip to main content

10th Chemistry Chapter 1, Chemical Reactions and Equations Chapter based Multiple Choice Questions (MCQs)

Image
By

Class 10, CBSE Science Practical Skills

1: What is the colour and formula of Sodium Sulphate?

(a) Colourless Na2SO4 (b) White Na2SO4 (c) Colourless NaSO4 (d) White Na(SO4)2

2: During respiration, glucose and oxygen combines in the cells of our body when energy is released.

What is the best way to describe the reaction that takes place during the process of respiration? .

(a) Oxidation (b) Endothermic (c) Exothermic (d)Displacement

3: What becomes the colour of iron nails after they have been kept in the blue solution of copper sulphate for about 20 minutes?

(a) White (b) Reddish brown (c) Green (d) Blue

4: Barium chloride and sodium sulphate react to produce -

(a) BaSO4 & NaCl (b) Ba2SO4 & NaCl (c) BaSO4 & Na2Cl (d) None of these.

5: The action of water on quick lime is an example of which type of reaction?

(a) Combination (b) Displacement (c) Decomposition (d) Redox

6: What is the nature of the new product which is formed by the action of water on quick lime?

(a) Neutral (b) Acidic (c) Amphoteric (d) Basic

7: CaO and CO2 are produced by heating CaCO3. What is the type of the reaction and the process?

(a) displacement reaction and endothermic process

(b) decomposition reaction and exothermic process

(c) decomposition reaction and endothermic process

(d) combination reaction and endothermic process

8: When ferrous sulphate is heated the following reaction takes place:

2FeSO4 (s) --------> Fe2O3 (s) + SO2 (g) + SO3 (g)

The above reaction is called __________ of ferrous sulphate.

(a) Thermal Displacement (b) Combination (c) Thermal Decomposition (d) Double displacement

9: How the colour changes when the gases after thermal decomposition of ferrous sulphate come in contact with an acidified solution of potassium dichromate?

(a) Green to orange (b) Orange to green

(c) Blue to green (d) Red to colourless

10: What is the color of solid ferrous sulphate?

(a) Blue (b) Red (c) Light green (d) Light yellow

11: What is the odor of the gases produced on thermal decomposition of ferrous sulphate?

(a) Like rotten eggs (b) Like burning sulphur (c) Sweet smell (d) Fruity smell

12: What is the color of the residue left in the test tube after thermal decomposition of ferrous sulphate?

(a) White (b) Black (c) Green (d) Yellowish brown

13: Heating ferrous sulphate is an example of which type of reaction?

(a) Thermal decomposition (b) Thermal analysis (c) Double decomposition (d) Catalytic decomposition

14: Which one is a double displacement reaction?

(a) BaCl2 + Na2SO4 --------> BaSO4 + 2NaCl

(b) CaO + H2O ------------> Ca(OH)2

(c) 2Pb(NO3)2 --------> 2PbO + 4NO2 + O2

(d) Zn + 2AgNO3 ----------> Zn(NO3)2 + 2Ag

15: The heating of ferrous sulphate is an example of __________ reaction and the reaction between iron and copper sulphate is an example of __________ reaction.

(a) displacement, decomposition (b) decomposition, displacement

(c) combination, displacement (d) combination, decomposition

16: A black mass is obtained on strongly heating a mixture of iron fillings and sulphur powder. When this black mass was treated with dilute sulphuric acid a gas with smell of rotten eggs is liberated. The gas is -

(a) SO3 (b) SO2 (c) a mixture of SO2 and SO3 (d) H2S

17: Following is the reactivity series in decreasing order of their reactivity -

Magnesium > Zinc > Iron > Lead > Copper > Silver > Gold

Which one of the following metals can displace copper from copper sulphate solution?

(a) Zn (b) Ag (c) Au (d) None

19: What is the color of the solution of copper sulphate?

(a) Green (b) Light green (c) Blue (d) Pink

20: Which type of reaction takes place when an iron nail is dipped in a solution of copper sulphate?

(a) Combination (b) Displacement (c) Double displacement (d) Decomposition

21: Which one is the correct statement about the reaction?

Fe(s) + CuSO4(aq) ----> FeSO4(aq) + Cu(s)

(a) Iron is more reactive than copper (b) Iron is less reactive than copper

(c) In this reaction Cu2+ is oxidized and Fe is reduced (d) Copper is more reactive than iron

22: What is the colour of the aqueous solution of sodium sulphate?

(a) Blue (b) Green (c) Colourless (d) Purple

23: What is the colour of the aqueous solution of Barium chloride?

(a) Blue (b) Green (c) Colourless (d) Purple

24: What is the colour of the precipitate which is formed when aqueous solutions of sodium sulphate and barium chloride are mixed?

(a) Yellow (b) White (c) Green (d) Orange

25: Name the precipitate formed when aqueous solutions of sodium sulphate and barium chloride are mixed?

(a) Barium sulphate (b) Sodium sulphate (c) Barium hydroxide (d) Barium sulphate

26: What is the type of the reaction between sodium sulphate and barium chloride?

(a) Decomposition (b) Direct combination (c) Single displacement (d) Double displacement

Answer: 
1:a 2:c 3:b 4:a 5:a 6:c 7:c 8:c 9:b 10:c 11:b 12:d 13:a 14:a 15:b 16:d 17:a 19:c 20:b 21:a 22:c 23:c 24:b 25:d 26:d
Labels:

Comments

  1. AnonymousApril 27, 2012

    thanks sunil

    ReplyDelete
  2. AnonymousApril 27, 2012

    thanks sunil

    ReplyDelete
  3. AnonymousApril 27, 2012

    thanks sunil

    ReplyDelete
  4. MJJune 03, 2012

    Very Thnx for my holiday homework

    ReplyDelete
  5. UnknownAugust 06, 2012

    thanks u done my holiday homework thanku so much<3

    ReplyDelete

Post a Comment

CBSE ADDA :By Jsunil Sir : Your Ultimate Destination for CBSE Exam Preparation and Academic Insights

Living science ratna sagar class 6 solutions

By
Ratna sagar living science 6 answers by jsunil. Class6 Living science solution Term-1 Living Science Solution chapter-1 Source of food Download File Living Science Solution chapter-2 Component of food Download File Living Science Solution chapter-3 Fibre to fabric Download File Living Science Sol ch-4 Sorting of material into group Download File Living Science Soln ch-5 Separation of substance Download File Living Science Solution chapter-6 Change around Us Download File Living Science Solution ch-7 Living and Non Living Download File Living Science Solution ch-8 Getting to Know Plants Download File Living Science Sol ch-9 The Body and Its movements Download File Visit given link for full answer Class6 Living science solution Term-II
Post a Comment
Read more

Class 10 Chapter 02 Acid Bases and Salts NCERT Activity Explanation

By
NCERT Activity Chapter 02 Acid Bases and Salt Class 10 Chemistry Activity 2.1 Indicator Acid Base Red litmus No Change Blue Blue Litmus Red No change Phenolphthalein Colourless Pink Methyl Orange Pink   Yellow Indictors are substance which change colour in acidic or basic media. Activity 2.2 There are some substances whose odour changes in in acidic or basic media. These are called olfactory indicators. Like onion vanilla, onion and clove. These changes smell in basic solution. Activity 2.3 Take about 5 mL of dilute sulphuric acid in a test tube and add few pieces of zinc granules to it. => You will observe bubbles of hydrogen gas on the surface of zinc granules. Zn + H2SO4 --> ZnSO4 + H2 => Pass the Hydrogen gas through the soap solution. Bubbles formed in the soap solution as Hydrogen gas it does not get d...
Post a Comment
Read more

Class 10 Metal and Non MetalsChapter 03 NCERT Activity Solutions

By
X Class 10 NCERT Activity Explanation Class 10 Metals and Non Metals Activity 3.1 Page No. 37 Take samples of iron, copper, aluminium and magnesium. Note the appearance of each sample. They have a shining surface. Clean the surface of each sample by rubbing them with sand paper and note their appearance again. They become more shiny. => Freshly cut Metal have shiny surface Activity 3.2 Page No. 37 Take small pieces of iron, copper, aluminium, and magnesium. Try to cut these metals with a sharp knife and note your observations. They are very hard to cut. Hold a piece of sodium metal with a pair of tongs and try to cut it with a knife. Sodium can be cut easily with knife. Hence K and Na are soft metal cut with knife Activity 3.3 Page No. 38 Take pieces of iron, zinc, lead and copper try to strike it four or five times with a hammer. These metals are beaten into thin sheet on hammering. This property of metal is called malleability and metals are called malleable. Activity 3.4 Page ...
Post a Comment
Read more

Class 09 Atoms and Molecules Numerical Problem based on Law of chemical Combination(Solved)

By
Class 09 Atoms and Molecules Numerical Problem based on Law of chemical Combination Law of conservation of mass Law of constant proportion Empirical formula 1. If 10 grams of CaCO 3 on heating gave 4.4g of CO 2 and 5.6g of CaO, show that these observations are in agreement with the law of conservation of mass.(Based on Law of conservation of mass) Solution:  Mass of the reactants = 10g ;  Mass of the products = 4.4 + 6.6g = 10g Since the mass of the reactants is equal to the mass of the products, the observations are in agreement with the law of conservation of mass. 2. 1.375 g of cupric oxide was reduced by heating and the weight of copper that remained was 1.098g.  In another experiment 1.179 g of copper was dissolved in nitric acid and the resulting copper nitrate was converted into cupric oxide by ignition . The weight of cupric oxide formed was 1.476 g. which law of chemical combinations does this data state? Solution: in first experiment: Copper oxide = 1....
Post a Comment
Read more

Structure of Matter class07

By
The language of chemistry class 7 Basic science soled questions. Q. What is chemistry? Ans: Chemistry is a branch of science in which we study the composition, structure, properties and change of matter. Q. What is matter? Ans: Anything that is around us having some mass and occupies space is called matter. Q. What are the different classifications of matter? Ans: Matters are classified into element, compound and mixture. Q. What is element? Ans: Elements are the purest form of substance (matter) made up of same kinds of particles. The smallest unit of element is an atom. eg. Hydrogen, oxygen, carbon. Q. What is compound?            See full post   The language of chemistry class 7 Basic science Class 07 Basic sciences Chapter the Language of Chemistry A. Answer these questions 1. What does the formula of a substance tell us? Answer: Formula of a compound or an element represents the name and number of atoms present ...
Post a Comment
Read more