CHEMISTRY IMPORTANT QUESTIONS FOR CLASS 12th

CHEMISTRY IMPORTANT QUESTIONS FOR CLASS 12th

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chapter -5


Question no. : 1

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Light comes from skylights or windows and the dust

 particles to see it , which is why the effects appear?

Question no. : 2

What is absorption and absorption ? Give examples.


Question no. : 3

What is the rule of Hardy Schultz ? Explain

Question no. : 4

What are enzymes ? Briefly write its induction mechanism.

Question no. : 5

Explain the difference between fluid-friendly and anti-fluid 

colloid.

Question no. : 6

What is emulsification ? Explain

Question no. : 7

What is brownie motion ? Explain

Question no. : 8

What is a golden number ? Explain with examples. 

Question no. : 9

What is Electrical Particle Circulation ? Explain

Question no. : 10

What is Michelle ? Explain

Question no. : 11

What do you understand by absorption?

Question no. : 12

What do you understand by physical absorption and chemical 

absorption  ?

Question no. : 13

Write down the factors affecting absorption  ?

Question no. : 14

Protection of colloids What do you understand by colloids  ? 

Question no. : 15

The number of gold (Gold number)   with what you think  ?

Question no. : 16

Explain what is the tinnitus effect  ?

Question no. : 17

What is Brownie Speed? What effect does heat have on it  ?

Question no. : 18

Explain what Michel is , with examples  ?

Question no. : 19

What are fluid friendly and anti-fluid colloids, give an example  ?

Question no. : 20

Write applications for colloidal bodies  ?

Question no. : 21

Write a comment on enzyme stimulation  ?

Question no. : 22

Explain what is dialysis  ?

Question no. : 23

Explain what is the rule of Hardy Schulz with examples   ?

Question no. : 24

What is the difference between colloid solution,  actual solution 

and  suspension  ? 

Question no. : 25

Write a comment –

  1. Self-motivation 
  2. Catalytic poison 

Question no. : 26

What is emulsifier and why is it used?  

Question no. : 1

Why does the sky appear blue? Explain

Question no. : 2

Explain the factors affecting absorption.

Question no. : 3

Why smoke control precipitates are installed in mill chimneys?

Question no. : 4

How the colloidal solution is classified on the

 basis of the projected phase and the physical 

conditions of the projection medium.

Question no. : 5

What is electromagnetism ? Explain

Question no. : 6

Explain the following :

(i)         Absorption entropy  (ii)        Rakshi colloid              

Question no. : 7

What is pepticization and condensation ? Explain

Question no. : 8

Write the properties of catalysts.

Question no. : 9

Explain positive and negative stimuli with examples.

Question no. : 10

If your clothes get stained then wash the clothes with a scrubber , 

how does a scrubber remove the stains?

Question no. : 11

People working in coal mines use activated charcoal in gas masks , why ?

Question no. : 12

Alum is put in the soil to purify the contaminated dirty water , why?


Question no. : 13

Catalysts are more effective in the form of fine powder , why ?

Question no. : 14

How is it possible to get rain by spraying silver iodide on clouds?

Question no. : 15

Explain the reason-

1.     (1.) When  sour is added in milk, it bursts.

2.      (2.)  Where the river mixes its water with the sea, it becomes delta. 

Question no. : 16

  1. How is it possible to get rain by spraying silver iodide on clouds?
  2. What happens is , when freshly precipitated Fe (OH) 3  to slightly
  3.  dilute FeCl 3  solution is mixed with?

Question no. : 17

  1. The color of the sky is blue 

    ?  

  2. Delta is formed when rivers join the sea, why  ?

Question no. : 18

  1. In a dark room, the beam of  light coming from the window makes
  2.  the dust particles shine?
  3. Applying alum on the injured area stops the bleeding ? 

Question no. : 19

  1. Turning alum clears the water containing mud ?
  2. Okjelika acid KMnO 4 mixed color after the first but slowly
  3.  begins to disappear rapidly ? 

Question no. : 20

  1. What is the function of P d and BaSO 4 by Rosenmund catabolism
  2.  and how do they both affect the rate of chemical reaction?                                 
  3. Explain what type of colloidal solution is stained glass , milk , fog 
  4. , soap foam  ?

Question no. : 21

  1. What is the function of P d and BaSO 4 by Rosenmund catabolism
  2.  and how do they both affect the rate of chemical reaction?                                 
  3. Explain what type of colloidal solution is stained glass , milk , fog 
  4. , soap foam  ?

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