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CBSE

Subject

Chemistry
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NEET Chemistry : The p-Block Elements

Multiple Choice Questions

101.

The correct order of increasing bond angles in 

  • Cl2O < ClO2 < ClO2-

  • ClO2 <Cl2O< ClO2-

  • Cl2O < ClO2- < ClO2

  • Cl2O < ClO2- < ClO2



102.

The stability of +1 oxidation state increases in the sequence 

  • Al < Ga <In < Tl

  • Tl < In <Ga< Al

  • In < Tl < Ga < Al

  • In < Tl < Ga < Al



103.

Strong reducing behaviour of H3PO4 is due to

  • the presence of one -OH group and two P-H bonds

  • high electron gain enthalpy of phosphorous 

  • the high oxidation state of phosphorus

  • the high oxidation state of phosphorus



104.

which of the following oxides is not expected to react with sodium hydroxide?

  • B2O3

  • CaO

  • SiO2

  • SiO2



105.

Which of the following oxide is amphoteric?

  • SnO2

  • CaO2

  • SiO2

  • SiO2



106.

The stability of +1 oxidation state among Al, Ga, In and TI increases in the sequence

  • Ga<In< Al<Tl

  • Al<Ga<In<Tl

  • Tl<In<Ga<Al

  • Tl<In<Ga<Al



107.

Among the following which is the strongest oxidising agent?

  • F2

  • Br2

  • I2

  • I2



108.

The variation of the boiling point of the hydrogen halides in the order HF >  HI > HBr > HCl. What explains the higher boiling point of hydrogen fluoride?

  • The electronegativity of fluorine is much higher than for other elements in the group

  • There is strong hydrogen bonding between HF molecules

  • The bond energy of HF molecules is greater than in other hydrogens halides

  • The bond energy of HF molecules is greater than in other hydrogens halides



109.

Match (I) substances with List (II) processes employed in the manufacture of the substances and select the correct option.

List I

List II

A

Sulphuric acid

1

Haber’s process

B

Steel

2

Bessemer’s process

C

Sodium

3

Lablanc process

D

Ammonia

4

Contact process

  • A

    B

    C

    D

    1

    4 2

    3

  • A

    B

    C

    D

    1

    2

    3

    4

  • A

    B

    C

    D

    4

    3 2 1
  • A

    B

    C

    D

    4

    3 2 1


110.

Oxidation states of P in H4P2O5, H4P2O6, H4P2O7, are respectively

  • +3, +5, +4

  • +5, +3, +4

  • +5, +4,+3

  • +5, +4,+3



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