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. Colligative property (i)  Polysaccharide
B. Nicol prism (ii) Aldol condensation
C.  Activation energy (iii)  Ammonia
D.  Activation energy (iv) Polarimeter
E. Acetaldehyde (v) Arrhenius equation
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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:   

(zero, first, second, increased, decreased, anode, cathode, active, inactive, potassium cyanide, internal, external, dependent, independent, red, benzoic acid, benzoin, common ion effect, salt hydrolysis, alkali, potassium hydroxide.)

(i) In a galvanic cell, electrons flow from________to_________through the connecting wires.

(ii) Racemic mixtures are optically-because of________compensation.

(iii) Half life period of a _________order reaction is-of the concentration of the reactant.

(iv) Benzaldehyde when treated with an alcoholic solution of__________forms___________.

(v) Solubility of calcium oxalate is _________in the presence of ammonium oxalate because of________.

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 Multiple Choice QuestionsMultiple Choice Questions

3.

Complete the following statements by selecting the correct alternative from the choices given:   
The compound which is optically active is:

  • I-butanol

  • 2-butanol

  •  1-propanol

  •  1-propanol

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4.

Complete the following statements by selecting the correct alternative from the choices given:   
The salt which will not hydrolyse in aqueous solution is:

  • Copper sulphate

  • Sodium sulphate

  • Potassium cyanide

  • Potassium cyanide

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5.

Copper has the face centred cubic structure. The coordination number of each ion is:

  • 4

  • 12

  • 14

  • 14

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6.

Complete the following statements by selecting the correct alternative from the choices given:  
For the reaction 2S02 + 02 --->  2S03 the unit of equilibrium constant is

  • L mol-1 

  • J mol-1

  • mol L-1

  • mol L-1


A.

L mol-1 

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7.

The deficiency of vitamin D causes :

  • Rickets

  • Gout

  • Scurvy

  • Scurvy

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 Multiple Choice QuestionsShort Answer Type

8. Two metallic elements A and B have the following standard oxidation potentials : A = 0.40v B = - 0.80v. What would you expect if element A was added to an aqueous salt solution of element B? Give a reason for your answer.
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9. Two moles of NH3 are introduced into the one-litre flask in which it dissociates at high temperature as follows : 2NH3 (g) --> N2 (g) + 3H2 (g) Determine Kc, it at equilibrium 1 mole of NH3 remains.
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10. Give the balanced equation for the preparation of salicylaldehyde from phenol.
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