Complete the following statements by selecting the correct alter

Subject

Chemistry

Class

ICSE Class 12

Pre Boards

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Sample Papers

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 Multiple Choice QuestionsMatch The Following

1. Match the following:    
A. Co-ordination compounds (i) Raoult’slaw
B. Dilute solution  (ii) Group displacement law
C. Electrolysis  (iii) Werner’s theory
D. Electrolysis  (iv) Faraday’s law
E. Radioactivity  (v) Friedel Craft’s reaction
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 Multiple Choice QuestionsFill In the Blanks

2.

Fill in the blanks by choosing the appropriate word / words from those given in the brackets :   

(paramagnetic, ethanol, diethyl ether, electron, proton, neutron, directly, Glucose, one, two depression, inversely, Fructose, Lewis acid, Lewis base, positive, ions, diamagnetic, negative, two, molecules, elevation, atoms)

(i ).................. and .................. are functional isomers.

(ii) AlCl3 is a.................. because it is an .................. deficient molecule.

(iii) The .................. of the boiling point of a solvent by the addition of a solute is.................proportional to the molality of the solution.

(iv) The crystal of diamond is made of.................. while that of calcium chloride is made of.................... .

(v) Oxygen molecule is..................due to the presence of..................unpaired electrons

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 Multiple Choice QuestionsMultiple Choice Questions

3. Complete the following statements by selecting the correct alternative from the choices given:    

The number of Faradays required to reduce one mol of Cu+2 to metallic copper is:
  • One

  • Two

  • Three

  • Three

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4. Complete the following statements by selecting the correct alternative from the choices given:    

When oxalic acid is heated with glycerol we get:
  • Formic acid

  • Acetic Acid

  • Lactic Acid

  • Lactic Acid

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5. Complete the following statements by selecting the correct alternative from the choices given:    

The molecular weight of sodium chloride determined by measuring the osmotic pressure of its aqueous solution is:
  • Double the theoretical value  
  • Same as the theoretical value
  •  Half the theoretical value 
  •  Half the theoretical value 
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6. Complete the following statements by selecting the correct alternative from the choices given:    

In ethyne molecule there are:
  • Only three sigma bonds
  • Only three pi bonds
  • Three sigma bonds and two pi bonds
  • Three sigma bonds and two pi bonds


C.

Three sigma bonds and two pi bonds
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7.

Complete the following statements by selecting the correct alternative from the choices given:    

An example of an electrophile is:

  •  N02+  

  • NO2-

  • NO2 

  • NO3-

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 Multiple Choice QuestionsShort Answer Type

8. Correct the following statements by changing the underlined part of the sentence. (Do not change the whole sentence) : 

For all spontaneous processes, the change in entropy is zero.
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9. Correct the following statements by changing the underlined part of the sentence. (Do not change the whole sentence) : 

Formaldehyde undergoes Cannizzaro’s reaction since it has one alpha hydrogen atom.
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10. Correct the following statements by changing the underlined part of the sentence. (Do not change the whole sentence) : 

In a co-ordination complex, donation of electron pair takes place from the central metal atom to the ligands.
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