product
-Answered by Manisha Kumari On 16 September 2021:04:28:36 PM
Question 1. Asked on :16 September 2021:04:25:21 PM
the new substance formed during the reaction is called______
-Added by Manisha Kumari Science » Chemical Reaction And Equation
Answer:
product
-Answered by Manisha Kumari On 16 September 2021:04:28:36 PM
Question 2. Asked on :31 August 2021:04:30:14 PM
The substance which added oxygen to reactant is known as -
-Added by Shruti Srivastva Science » Chemical Reaction And Equation
Answer:
Oxidising agent
-Answered by Shruti Srivastva On 31 August 2021:04:33:02 PM
Question 3. Asked on :31 August 2021:04:28:46 PM
The reaction in which both oxidation and reduction reactions take place is called ____________ .
-Added by Shruti Srivastva Science » Chemical Reaction And Equation
Answer:
redox reaction
-Answered by Shruti Srivastva On 31 August 2021:04:29:41 PM
Question 4. Asked on :31 August 2021:04:27:34 PM
Pb + CuCl2 → PbCl2 + Cu The above reaction is an example of-
-Added by Shruti Srivastva Science » Chemical Reaction And Equation
Answer:
displacement reaction
-Answered by Shruti Srivastva On 31 August 2021:04:28:24 PM
Question 5. Asked on :31 August 2021:04:26:06 PM
The products formed when iron fillings are heated with diluted hydrochloric acid-
-Added by Shruti Srivastva Science » Chemical Reaction And Equation
Answer:
Fe (III) chloride and hydrogen gas
-Answered by Shruti Srivastva On 31 August 2021:04:26:51 PM
Question 6. Asked on :31 August 2021:04:24:49 PM
Electrolysis of water is a :
-Added by Shruti Srivastva Science » Chemical Reaction And Equation
Answer:
electric decomposition
-Answered by Shruti Srivastva On 31 August 2021:04:25:57 PM
Question 7. Asked on :31 August 2021:04:23:32 PM
When an iron nail is placed in a solution of copper sulphate, the blue colour of solution turn into redish brown due to -
-Added by Shruti Srivastva Science » Chemical Reaction And Equation
Answer:
displacement of copper from solution
-Answered by Shruti Srivastva On 31 August 2021:04:24:26 PM
Question 8. Asked on :31 August 2021:04:22:14 PM
Which of the following are exothermic processes- (i) Reaction of water with quick lime (ii) Dilution of an acid (iii) Evaporation of water (iv) sublimation of champhor (crystals)
-Added by Shruti Srivastva Science » Chemical Reaction And Equation
Answer:
(i) Reaction of water with quick lime and (ii) Dilution of an acid
-Answered by Shruti Srivastva On 31 August 2021:04:22:40 PM
Question 9. Asked on :31 August 2021:04:19:59 PM
When an iron nail is placed in copper sulphate solution the observation are as follow-
-Added by Shruti Srivastva Science » Chemical Reaction And Equation
Answer:
The solution turns light green, A brown deposit is formed on the nail
-Answered by Shruti Srivastva On 31 August 2021:04:20:46 PM
Question 10. Asked on :31 August 2021:04:17:24 PM
A student took solid quick lime in a china dish and added a small amount of water to it. He would hear-
-Added by Shruti Srivastva Science » Chemical Reaction And Equation
Answer:
hissing sound
-Answered by Shruti Srivastva On 31 August 2021:04:18:59 PM
Question 11. Asked on :31 August 2021:04:15:47 PM
The colour of ferrous sulphate crystal is -
-Added by Shruti Srivastva Science » Chemical Reaction And Equation
Answer:
Light green
-Answered by Shruti Srivastva On 31 August 2021:04:16:56 PM
Question 12. Asked on :31 August 2021:04:13:58 PM
When aqueous solution of sodium sulphate and barium chloride are mixed together, it becomes-
-Added by Shruti Srivastva Science » Chemical Reaction And Equation
Answer:
forms a white precipitate
-Answered by Shruti Srivastva On 31 August 2021:04:15:36 PM
Question 13. Asked on :31 August 2021:04:10:11 PM
The process of respiration is -
(A) an oxidation reaction which is endo thermic
(b) a reduction reaction which is exothermic
(C) a combination reaction which is endo thermic
(d) an oxidation reaction which is exothermic
-Added by Shruti Srivastva Science » Chemical Reaction And Equation
Answer:
(d) an oxidation reaction which is exothermic
-Answered by Shruti Srivastva On 31 August 2021:04:13:16 PM
Question 14. Asked on :31 August 2021:04:05:29 PM
Which of the following reaction is used for black and white photography-
(a) CaCO3 (s) → CaO (s) + CO2 (g)
(b) 2FeSO4 (s) → Fe2O3 (s) + SO2 (g) + SO3 (g)
(c)2AgCl(s) → 2Ag(s) + Cl2(g)
(d) 2H2O → 2H2 (g) + O2 (g)
-Added by Shruti Srivastva Science » Chemical Reaction And Equation
Answer:
(c) 2AgCl(s) → 2Ag(s) + Cl2(g)
-Answered by Shruti Srivastva On 31 August 2021:04:09:46 PM
Question 15. Asked on :23 August 2021:04:23:07 PM
When two or more than two reactants join together to form a single newly substance is called ______________ .
-Added by Shruti Srivastva Science » Chemical Reaction And Equation
Answer:
Combination reaction
-Answered by Shruti Srivastva On 23 August 2021:04:25:42 PM
Question 16. Asked on :23 August 2021:04:17:56 PM
In order to prevent the spoilage of potato chips, they are packed in plastic bags containing the gas
-Added by Shruti Srivastva Science » Chemical Reaction And Equation
Answer:
N2
-Answered by Shruti Srivastva On 23 August 2021:04:22:47 PM
Question 17. Asked on :23 August 2021:04:15:42 PM
Which the following statements about the given reaction are correct: 3Fe(s) + 4H2O (g) → Fe2O3 (s) + 4H2 (g) (i) Iron metal is getting oxidized (ii) Water is getting reduced (iii) Water is acting as reducing agent (iv) Water is acting as oxidizine agent
-Added by Shruti Srivastva Science » Chemical Reaction And Equation
Answer:
(i) Iron metal is getting oxidized
-Answered by Shruti Srivastva On 01 September 2021:04:12:55 PM
Question 18. Asked on :23 August 2021:04:10:01 PM
Electrolysis of water is decomposition reaction. The mole ratio of hydrogen and oxygen gases liberated during electrolysis of water is
-Added by Shruti Srivastva Science » Chemical Reaction And Equation
Answer:
2:1
-Answered by Shruti Srivastva On 23 August 2021:04:14:22 PM
Question 19. Asked on :23 August 2021:04:03:50 PM
The shiny finish of wall after white wash is because of.
-Added by Shruti Srivastva Science » Chemical Reaction And Equation
Answer:
Calcium Carbonate
-Answered by Shruti Srivastva On 23 August 2021:04:08:18 PM
Question 20. Asked on :12 October 2019:10:50:56 AM
Why decomposition reaction are called opposite of combination reaction?
-Added by Himanshi Verma Science » Chemical Reaction And Equation
Answer:
In a decomposition reaction, a single substance breaks down into two or more substance while in a combination reaction, two or more substances react to produce one substance. Therefore, decomposition reaction are called opposite of combination reaction.
-Answered by Nishant Verma On 13 October 2019:03:25:26 PM
Question 21. Asked on :07 October 2019:11:52:45 AM
Zinc liberates hydrogen gas when reacted with dilute hydrochloric acid, whereas copper does not. Explain why?
-Added by Himanshi Verma Science » Chemical Reaction And Equation
Answer:
-Answered by Master Purushottam On 07 October 2019:09:07:55 PM
Question 22. Asked on :07 October 2019:11:51:45 AM
Why do we store silver chloride in dark coloured bottles?
-Added by Himanshi Verma Science » Chemical Reaction And Equation
Answer:
-Answered by Master Purushottam On 07 October 2019:09:08:05 PM
Question 23. Asked on :22 September 2019:07:44:17 PM
-Added by Rohit Rajput Science » Chemical Reaction And Equation
Answer:
-Answered by Suraj Kumar On 07 November 2019:08:39:22 AM
Question 24. Asked on :22 September 2019:07:43:29 PM
-Added by Rohit Rajput Science » Chemical Reaction And Equation
Answer:
-Answered by Suraj Kumar On 07 November 2019:08:39:33 AM
Question 25. Asked on :22 September 2019:07:41:50 PM
-Added by Rohit Rajput Science » Chemical Reaction And Equation
Answer:
-Answered by Suraj Kumar On 07 November 2019:08:39:45 AM
Question 26. Asked on :21 September 2019:05:06:03 PM
-Added by Akki chauhan Science » Chemical Reaction And Equation
Answer:
-Answered by priyanshu kumar On 02 October 2019:12:45:02 PM
Question 27. Asked on :04 September 2019:10:57:38 AM
-Added by Akki chauhan Science » Chemical Reaction And Equation
Answer:
-Answered by priyanshu kumar On 10 October 2019:10:49:59 AM
Question 28. Asked on :02 September 2019:06:51:47 PM
What is respiration?
-Added by Himanshi Verma Science » Chemical Reaction And Equation
Answer:
-Answered by Master Purushottam On 03 September 2019:03:02:28 PM
Question 29. Asked on :02 September 2019:06:43:32 PM
What do you understand by exothermic and endothermic reaction?
-Added by Himanshi Verma Science » Chemical Reaction And Equation
Answer:
Exothermic reaction:- The reaction in which heat is evolved is called exothermic reaction. For ex- C+ O2-----> CO2 + heat
Endothermic reaction:- The reaction in which heat is not evolved and energy is evolved is called endothermic reaction. For ex- C6H12O2+6O2----> 6CO2+ 6H2O+ Energy.
-Answered by Master Purushottam On 03 September 2019:03:02:38 PM
Question 30. Asked on :02 September 2019:06:38:21 PM
What do you mean by chemical equation?
-Added by Himanshi Verma Science » Chemical Reaction And Equation
Answer:
The method of representing a chemical reaction with the help of symbols and formulae of the substances involved in it is known as a chemical equation.
For ex- Zinc metal reacts with dilute sulphuric acid to form zinc sulphate and hydrogen gas. This reaction can be written in words as :
Zinc+ Sulphuric Acid ----------> Zinc sulphate + Hydrogen
-Answered by Master Purushottam On 03 September 2019:03:05:43 PM
Question 31. Asked on :31 August 2019:07:53:44 PM
-Added by Akki chauhan Science » Chemical Reaction And Equation
Answer:
-Answered by Nishant Verma On 02 September 2019:11:56:57 AM
Question 32. Asked on :31 August 2019:07:52:52 PM
What is Products?
-Added by Akki chauhan Science » Chemical Reaction And Equation
Answer:
-Answered by Nishant Verma On 02 September 2019:11:57:10 AM
Question 33. Asked on :31 August 2019:07:52:05 PM
What is Reactants?
-Added by Akki chauhan Science » Chemical Reaction And Equation
Answer:
-Answered by Nishant Verma On 02 September 2019:11:57:32 AM
Question 34. Asked on :31 August 2019:07:38:31 PM
Why is respiration considered an exothermic reaction?
-Added by Akki chauhan Science » Chemical Reaction And Equation
Answer:
-Answered by Nishant Verma On 02 September 2019:11:57:46 AM
Question 35. Asked on :19 August 2019:08:01:40 PM
Why does the copper sulphate solution change when iron nail is dipped in it?
-Added by Akki chauhan Science » Chemical Reaction And Equation
Answer:
When an iron nail is dipped in copper sulphate the blue colour of copper solution get change blue to green.
-Answered by Himanshi Verma On 19 August 2019:08:07:05 PM
Question 36. Asked on :19 August 2019:07:59:59 PM
-Added by Akki chauhan Science » Chemical Reaction And Equation
Answer:
Calcium oxide ( quick lime).
-Answered by Himanshi Verma On 19 August 2019:08:05:26 PM
Question 37. Asked on :19 August 2019:07:54:14 PM
What is corrosion?
-Added by Akki chauhan Science » Chemical Reaction And Equation
Answer:
The process in which metals loses their surface or gets corroded gradually by the reaction of air, water, and moisture is called corrosion.
-Answered by Himanshi Verma On 19 August 2019:08:03:16 PM
Question 38. Asked on :18 August 2019:08:51:58 AM
Why should megnisium ribbon be cleaned before burning in air?
-Added by Khushi Chauhan Science » Chemical Reaction And Equation
Answer:
-Answered by Himanshi Verma On 18 August 2019:10:30:19 AM
Question 39. Asked on :19 April 2019:08:29:31 AM
What is chemical reaction.
-Added by Prince Rawat Science » Chemical Reaction And Equation
Answer:
Chemical reaction, a process in which one or more substances, the reactants, are converted to one or more different substances, the products. Substances are either chemical elements or compounds. A chemical reaction rearranges the constituent atoms of the reactants to create different substances as products.
-Answered by Sohail alam On 19 April 2019:03:03:21 PM
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