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Asked/Added Questions From NCERT:


Question 1. Asked on :23 August 2021:04:27:06 PM

 Oxides of which of the metals prevent its further corrosion of metal-

-Added by Shruti Srivastva Science » Chemical Reaction

Answer:

Shruti Srivastva

Aluminium 

-Answered by Shruti Srivastva On 23 August 2021:04:27:33 PM


Question 2. Asked on :23 August 2021:04:26:14 PM

 Rancidity of food items can be prevented by-

-Added by Shruti Srivastva Science » Chemical Reaction

Answer:

Shruti Srivastva

 adding antioxidants, keeping food in air tight containers and replacing air of container by nitrogen

-Answered by Shruti Srivastva On 23 August 2021:04:26:41 PM


Question 3. Asked on :23 August 2021:04:22:58 PM

 Name the oxidised and reduced substances in given chemical reaction- CuO + H2  → Cu + H2O

-Added by Shruti Srivastva Science » Chemical Reaction

Answer:

Shruti Srivastva

 H2 is oxidised and CuO is reduced

-Answered by Shruti Srivastva On 23 August 2021:04:23:27 PM


Question 4. Asked on :23 August 2021:04:19:10 PM

 A skeletal equation can be balanced by using - 

-Added by Shruti Srivastva Science » Chemical Reaction

Answer:

Shruti Srivastva

 Hit and trial method and inspecting method

-Answered by Shruti Srivastva On 23 August 2021:04:19:45 PM


Question 5. Asked on :23 August 2021:04:09:22 PM

 The newly substance, which form during the reaction is called _______________ . 

-Added by Shruti Srivastva Science » Chemical Reaction

Answer:

Shruti Srivastva

 Products

-Answered by Shruti Srivastva On 23 August 2021:04:09:52 PM


Question 6. Asked on :09 March 2019:01:12:46 PM

 Why should a magnesium ribbon be cleaned before burning in air?

-Added by Rohit rajput Science » Chemical Reaction

Answer:

Himanshi Verma
A magnesium ribbon should be cleaned before burning in air so that it may come in the contact of air.

-Answered by Himanshi Verma On 09 March 2019:01:26:04 PM


 

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