Fill in the blanks by choosing the appropriate word / words from

Subject

Chemistry

Class

ICSE Class 12

Pre Boards

Practice to excel and get familiar with the paper pattern and the type of questions. Check you answers with answer keys provided.

Sample Papers

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 Multiple Choice QuestionsMatch The Following

1.

Match the following:

A. Nernst equation (i) Water
B. Water (ii) Constant volume
C. Amphiprotic solvent (iii) Ammonia
D. Amphiprotic solvent (iv) Optical Isomers
E. Isochoric process  (v) Electrochemical cells.
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 Multiple Choice QuestionsFill In the Blanks

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2.

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

(Raoult’s, Arrhenius, lateral, sodium, magnesium, negative, positive, non-ideal, ideal, iron, copper, van’t Hoff, p- p orbital, ethanol, ethanoic acid, methanoic acid, methanol, propanoic acid.)

(i) For a spontaneous change to take place, the ΔS of the system should be______and ΔG of the system should be________.

(ii) Hydrolysis of methyl propanoate gives______and_______.

(iii) Solutions which strictly obey-law are called__________solutions.

(iv) π bonds are formed by the-overlap of_______orbitals.

(v) Zinc can displace_______from CuSO4 solution, but cannot displace_________from MgSO4 solution.


positive,negative , Methanol, propanoic acid , Raoult’s ideal , p-p orbital , Cooper, magnesium
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 Multiple Choice QuestionsMultiple Choice Questions

3.

The quantity of electricity required to deposit 1-15g of sodium from molten NaCl (Na = 23, Cl = 35.5) is:

  •  IF

  • 0.5 F

  • 0.05 F

  • 0.05 F

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4.

When acetic acid is reacted with calcium hydroxide and the product is distilled dry, the compound formed is:

  • Calcium acetate

  • Acetone

  • Acetaldehyde

  • Acetaldehyde

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5. The [OH-] concentration of a weak base is given by:
  • Ckb

  • square root of straight C k subscript b
  • square root of straight K subscript bevelled straight b over straight c end subscript end root
  • square root of straight K subscript bevelled straight b over straight c end subscript end root
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6.

In a plot of log k vs 1 /T, the slope is:

  • - Ea/2.303

  •  Ea/2.303R

  • Ea/ 2.303

  • Ea/ 2.303

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7.

Among the following coordination compounds, the one giving a white precipitate with BaCl2solution is:

  • [Cr(H2O)5Br] SO4

  • [Cr(H2O)5SCN]

  • [Co (NH3)5 SO4] Br

  • [Co (NH3)5 SO4] Br

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 Multiple Choice QuestionsShort Answer Type

8.

Answer the following questions:

A solution X is prepared by dissolving three moles of glucose in one litre of water and a solution Y is prepared by dissolving 1.5 moles of sodium chloride in one litre of water. Will the osmotic pressure of X be higher, lower or equal to that of Y? Give a reason for your answer.

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9. Give one example (equation) of a homogeneously catalysed reaction and name the catalyst.
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10. Write the formula of the product formed when formaldehyde reacts with ammonia and name the product.
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