Question

 

3) Study the given experimental set-up and answer the  questions.



                                                                                                              

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

     (a) Acid     (b) Metal carbonate    (iii) Metal hydrogen carbonate  (iv) Metal oxide

(ii) Which gas is liberated during the process ?

     (a) Hydrogen gas   (b) Carbon dioxide gas  

     (c) Nitrogen gas     (d) Hydrogen sulphide gas

 

(iii) Identify the balanced chemical equation for the given reaction –

     (a) Zn  +  H2SO4  →  ZnSO4  +  H2

     (b) 2Zn  +  2H2SO4  →  2ZnSO4  +  2H2

     (c)  Zn  +  2H2SO4  →  2ZnSO4  +  H2

     (d)  2Zn  +  H2SO4  →  2ZnSO4  +  H2

 

(iv)  What will happen if NaOH is used in place of dil. sulphuric acid and the test

tube is heated ?

 

      (a) It will produce sodium zincate (salt) and hydrogen gas

      (b) It will produce sodium sulphate and hydrogen gas

      (c) It will produce sodium zincate (salt) and carbon dioxide gas

      (d) It will produce sodium sulphate and carbon dioxide gas.

 

(v)  How will you test for the gas evolved ?

      (a) Bring a glowing splint near test tube, it will re-ignite

      (b) Bring a moist litmus paper and place in a test tube of this gas, it turns red.

      (c) Bring a burning splint near the opening  of a test tube containing this gas,

           a popping sound occurs.

      (d) Using universal litmus solution





Answer please ​

Answer 1

3)

1. Acid
2. Hydrogen
3. Zn  +  H2SO4  →  ZnSO4  +  H2
4. Sodium zincate is formed along with hydrogen gas
5. Bring a burning splint near the opening  of a test tube containing the gas, a popping sound occurs.

${ \huge\rm \pink {♡H}\rm \blue {A} \rm \purple {N}\ \rm \green{J} \rm\red {U}\ \rm \orange {H} \rm{U} \rm \gray{I♡}}$