Subject

Chemistry

Class

NEET Class 12

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 Multiple Choice QuestionsMultiple Choice Questions

11.

Which of the following, not a correct statement? 

  • The electron -deficient molecules can act as Lewis acids

  • The canonical structures have no real existence

  • Every AB5 molecules does, in fact, have square pyramid structure

  • Every AB5 molecules does, in fact, have square pyramid structure

1146 Views

12.

Which of the following is not isostructural with SiCl4?

  • SCl4


  • SO42-
  • PO43- 

  • PO43- 

1738 Views

13.

The general molecular formula, which represents the homologous series of alkanols is:

  • CnH2nO2

  • CnH2nO

  • CnH2n+1O

  • CnH2n+1O

722 Views

14.

The correct order of the mobility of the alkali metal ions in aqueous solution is:

  • Li+>Na+ > K+ > Rb+

  • Na+>K+ > Rb+  > Li+

  • K+ > Rb+ >Na+ > Li+

  • K+ > Rb+ >Na+ > Li+

1091 Views

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15.

The correct regarding the electronegativity of hybrid orbitals of carbon is: 

  • sp> sp2<sp3

  • sp> sp2 > sp3

  • sp< sp2 > sp3

  • sp< sp2 > sp3

1125 Views

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16.

The IUPAC name of is:

  • 3,4-dimethylpentanoyl chloride

  • 1-chloro-1-oxo-2, 3-dimethyl pentane

  • 2-ethyl -3-ethylbutanonyl chloride

  • 2-ethyl -3-ethylbutanonyl chloride


D.

2-ethyl -3-ethylbutanonyl chloride

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17.

A solution containing 10 g per dm3 is urea (molecular mass = 60 g mol-1) is isotonic with a molecular mass of this non-volatile solute. The molecular mass of this of this non-volatile solute is:

  • 250 g mol-1

  • 300 g mol-1

  • 350 g mol-1

  • 350 g mol-1

3485 Views

18.

A plot of log x/m versus log p for the adsorption of a gas on a solid gives a straight line with slope equal to:

  • -log k

  • n

  • 1/n

  • 1/n

555 Views

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19.

CsBr crystallises in a body centred cubic lattice. The unit cell length is 436.6 pm. Given that the atomic mass of Cs - 133 and that of Br = 80 amu and Avogadro number being
6.02 x 1023 mol-1, the density of CsBr is:

  • 42.5 g/cm3

  • 0.425 g/cm3

  • 8.25 g/cm3

  • 8.25 g/cm3

1080 Views

20.

More the number of oxidation states are exhibited by the actinoids than by the lanthanoids. The main reason for this is:

  • more energy difference between 5f and 6d orbitals than that between 4f and 5d orbitals

  • the lesser energy difference between 5f and 6d orbitals than that between 4f and 5d orbitals

  • the greater metallic character of the lanthanoids than that of the corresponding actinoids

  • the greater metallic character of the lanthanoids than that of the corresponding actinoids

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