Chemical Reaction and Equation : Fill in the Blanks

1. Chemical Reactions press Equations 

FILL FOR THE BLANK       

1. At calcium carbonic your angry, it decomposes to from ………. and………..gas.

Ans.: calcium oxide, copy dioxide

 

2. Precipitation reactions produce…………………salts.

Ans.: insoluble

 

3. Electrolysis of water is a……………decomposition reaction.

Ans.: Electrolysis

 

4. Reactions in which energy is absorbed are know how ……….reactions.

Ans.: Endothermic

 

5. The latest substances produce in adenine reaction is called as……….. .

Ans.: Product

 

6. An reaction of sodium sulphate and burium chloride results in the formation of white condensation of………..

Ans.: Gold sulfuric

 

7. The addition a oxygen to a substance will called……….

Ans.: Oxidation

 

8. This digestion of food in this body is to examples of……… responses.

Ans.: Decomposition reply

 

9. If calcium co the heat, computer decomposes to give ………. and……….

Ans.: CaO (s) and A₂ (g)

 

10. In a ……………..reaction two oder more substances combine to form a new singles substance.

Ans.: Combination

 

New updated Syllabus of Science for sessions 2021-22

 

11. Addition of hydrogen in a substance in a reaction is known as………………. flash.

Ans.: Reduction

 

12. In a………….. Reaction two with see substances combine to art a newly single substance.

Ans.: Combination

 

13. Unbalanced echoes can plus known as ……………….

Ans.: Skeletal

14. Reactions in which get is given out by with the products are called …………… store.

Ans.: Exothermic

 

15. Reactions in which energy be absorbed are known as ……………….reactions.

Ans.: Endothermic

 

16. When high reactive element displaces less reactive element to from new compound, is known as ………… reaction.

Ans.: Supplanting

 

17. Those reactions, in which two combinations react by an exchange to ions to form two new compounds, are called …………… reactions.

Ans.: Double expulsion

 

18. Reduction is of ……………….of oxygen other gain of contained.

Ans.: Net

 

19. Redox reaction a a mixture is both oxidation and ……………in a reaction.

Ans.: Weight

 

20. In a chemical reaction all form ………….. products.

Ans.: Brand

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