Check sibling questions

Study the given experimental set-up and answer the following questions.

The above experimental set up shows reaction  between metal - Teachoo.jpg

(a) The above experimental set up shows reaction  between metal and  

(i) Acid  

(ii) Metal carbonate  

(iii) Metal hydrogen carbonate  

(iv) Metal oxide  

 

Ans.

In this experiment

  • We are detecting Hydrogen Gas
  • Here, a metal i.e . Zn is made to react with an acid like H 2 SO 4  the hydrogen gas released
  • Hydrogen gas burns with a pop sound when a burning candle is brought near it.

 

Thus, the experimental setup shows reaction between metal and acid

So, the correct option is (i)




(b) Which gas is liberated during the process?   

(i) Hydrogen gas  

(ii) Carbon dioxide gas  

(iii) Nitrogen gas  

(iv) Hydrogen sulphide gas  

 

Ans. 

During the reaction between a metal and an acid ,  hydrogen gas is released

The reaction is as follows:

Reaction of Metal with Acid (An Example).jpg

So, the correct option is (i) Hydrogen gas

 

(c) Write the products formed in the above process:  

(i) Zinc sulphate only  

(ii) Only hydrogen gas  

(iii) Zinc sulphate and hydrogen gas  

(iv) Zinc sulphide and hydrogen gas  

 

Ans. 

The reaction of Zn with H 2 O 4 is as follows:

Reaction of Metal with Acid (An Example).jpg

Thus, the products formed are

  • Zinc sulphate 
  • Hydrogen gas

 

So, the correct option is (iii) 

 

(d) A new product sodium zincate is formed if  sulphuric acid is replaced with:   

(i) Sodium hydroxide  

(ii) Sodium oxide  

(iii) Zinc oxide  

(iv) water  

 

Ans. 

When Zn is made to react with a base, i.e. sodium hydroxide, the following reaction takes place:

Reaction of Metal with Base (An Example)-Teachoo.jpg

So, the correct option is (i) Sodium hydroxide

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CA Maninder Singh

CA Maninder Singh is a Chartered Accountant for the past 12 years and a teacher from the past 16 years. He teaches Science, Accounts and English at Teachoo