The P Block Elements – Multiple Choice Questions

Q1. The hybridization state of Carbon in diamond is:

  1. sp2
  2. sp3
  3. sp
  4. None of these

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Q2. Germanium is transparent in:

  1. Infrared region
  2. Ultraviolet region
  3. Microwave region
  4. Visible region

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Q3. Boron generally forms:

  1. Electron-deficient compound
  2. Electron rich compound
  3. Electron precise compound
  4. Does not form any compound at all

Q4. Which one of the following is not an allotrope of carbon?

  1. Diamond
  2. Graphite
  3. Butane
  4. Fullerene

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Q5. Borax bead test is responded by:

  1. Divalent metals
  2. Heavy metals
  3. Light metals
  4. Metals which form coloured ions

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Q6. Which allotrope of carbon is a good conductor of electricity?

  1. Graphite
  2. Diamond
  3. Fullerenes
  4. Lamp black

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Q7. The number of carbon compounds is very large because:

  1. Carbon is tetravalent.
  2. It has non-metallic character.
  3. It reacts with acids.
  4. It has strong catenation property.

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Q8. The general electronic configuration of p-block elements is:

  1. ns2np1-6
  2. ns1np1-5
  3. np5
  4. nsonp1-6

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Q9. Which of the  oxide is  acidic from the following ?

  1. CO
  2. SnO
  3. PbO
  4. GeO

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Q10. Boric acid has a layer structure in which planar BO3  units are joined by:

  1. O-bonds
  2. N-bonds
  3. H-bonds
  4. Na-bonds

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Q11. The oxidation state which is exhibited by boron is:

  1. 5
  2. 1
  3. 3
  4. 4

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Q12. The hydrolysis of diborane gives a solution which is:

  1. Neutral
  2. Basic
  3. Acidic
  4. Amphoteric

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Q13. The two isotopic forms of boron are:

  1. 13B (19%) and 14B (81%)
  2. 10B (19%) and 11B (81%)
  3. 12B (50%) and 13B (50%)
  4. 9B (19%) and 10B (81%)

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Q14. Which of the following oxide exists at high temperature?

  1. SnO2
  2. SiO
  3. PbO
  4. GeO2

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Q15. Lead is unaffected by water because:

  1. Of its metallic nature
  2. Of formation of a protective oxide film
  3. Of poor shielding effect
  4. Of large covalent radius

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Q16. Which of the following is true about Boron?

  1. It only forms ionic compound.
  2. It predominantly forms covalent compound.
  3. The ionisation potential of boron is very low.
  4. Boron is inert in nature.

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Q17. The number of groups that belong to p-block are:

  1. 8
  2. 2
  3. 6
  4. 4

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Q18. Which of the following has covalent radius more than germanium?

  1. C
  2. Si
  3. Sn
  4. B

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Q19. Which of the following elements exist as liquid in summer among group 13 elements?

  1. B
  2. Al
  3. Ga
  4. Tl

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Q20. Silicon shows diagonal relationship with:

  1. C
  2. Be
  3. Al
  4. B

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Q21. The hybridization involved in BCl3NH3 is:

  1. sp
  2. sp3
  3. sp3d
  4. sp3d2

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Q22. The basic structural unit of silicates is:

  1. SiO4-4
  2. SiO4
  3. SiO3-4
  4. SiO4+4

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Q23. The formula of Borax is:

  1. Na2B4O7
  2. Na2B4O7.5H2O
  3. Na2B4O7.7H2O
  4. Na2B4O7.10 H2O

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Q24. Germanium is a:

  1. Metal
  2. Non-metal
  3. Metalloid
  4. Insulator

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Q25. Pick out the odd one out from the following.

  1. Bauxite
  2. Quartz
  3. Cristobalite
  4. Tridymite

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Q26. Silicones surrounded by non-polar alkyl groups are:

  1. Water repelling in nature
  2. Water attracting in nature
  3. Co-ordinate compounds
  4. None of these

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Q27. What is the valence shell electronic configuration of group 14 elements?

  1. ns2np2
  2. ns2np4
  3. ns1np4
  4. ns2np6

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Q28. Which of the following does not react directly with halogens to form halides?

  1. Si
  2. C
  3. Ge
  4. Sn

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Q29. Which of the following is affected by water?

  1. Carbon
  2. Tin
  3. Germanium
  4. Silicon

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Q30. Which of the following statement is not true about boric acid?

  1. It is a strong dibasic acid.
  2. It is monobasic acid.
  3. It is a weak acid.
  4. It acts as Lewis acid.

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Q31. Which of the following statements is true?

  1. The atomic radius of Ga is more than Al.
  2. The atomic radius of Ga is less than Al.
  3. The atomic radius of Ga is equal to Al.
  4. The atomic radius of Ga is less than B.

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Q32. The hybridization state of Carbon in fullerene is:

  1. sp2
  2. sp3
  3. sp
  4. None of these

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Q33. Identify from the following which are used as sealant, greases, electrical insulators and for water proofing of fabrics.

  1. Silicones
  2. Quartz
  3. Cristobalite
  4. Tridymite

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Q34. Carbon shows tetravalency by undergoing:

  1. sp2d hybridization
  2. sp3 dhybridization
  3. d2sp3 hybridization
  4. sp3 hybridization

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Q35. The hybridization state of carbon in carbon dioxide is:

  1. sp
  2. sp2
  3. sp3
  4. None of these

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Q36. The oxidation state which is not exhibited by group 18 elements is:

  1. +2
  2. +3
  3. +4
  4. +6

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Q37. The group of organo silicon polymers, which have ( -R2SiO-) as a repeating unit are known as:

  1. Silicones
  2. Quartz
  3. Cristobalite
  4. Tridymite

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Q38. The formula of inorganic benzene is:

  1. B3N3H6
  2. B6H6
  3. N6H6
  4. B3C3H6

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Q39. Boric acid is prepared from borax by the action of:

  1. Hydrochloric acid
  2. Sodium hydroxide
  3. Carbon dioxide
  4. Sodium carbonate

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Q40. Boron reacts with Chlorine to give:

  1. BCl3
  2. BCl5
  3. BCl
  4. BCl6

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