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Class 10
Solutions to CBSE Sample Paper - Science Class 10

Which of the following two combinations are correct? 

Q3 - This is the reaction of Metal with Acid - Teachoo.jpg

  Metal Gas Evolved
(i) Copper Yes
(ii) Iron Yes
(iii)      Magnesium No
(iv)  Zinc Yes

(A) i and iii 

(B) i and iv 

(C) ii and iii 

(D) ii and iv

 

Answer 

This is the reaction of Metal with Acid

 

Most metals react with Acids, to evolve gas. But some metals are too unreactive.  

 

From our options

  1. Copper does not react with Acids
  2. Iron reacts with Acids to liberate Hydrogen gas
  3. Magnesium reacts with Acids to liberate Hydrogen gas
  4. Zinc reacts with Acids to liberate Hydrogen gas

Reaction of Metal with Acid-01.jpg

Thus, options (ii) and (iv) are correct.

So, the correct answer is (d)

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