Statement Type p Block Elements Questions for NEET

Statement Type p Block Elements Questions for NEET

Statement Type p Block Elements Questions for NEET

In each of the following questions a statement I is given followed by a correspond statement II just below it. Mark the correct answer from the following statements.
1. Statement I and statement II are correct and statement II is the correct explanation of statement I
2. Statement I and statement II are correct but statement II is not the correct explanation of statement I.
3. Statement I is correct but statement II is false
4. Statement I if false but statement II is correct.

1. Statement I: Oxides of nitrogen exists as dimers
Statement II: In the molecule of nitrogen a triple bond is present in between the two nitrogen atoms (1σ, 2π)

2. Statement I: Triple phosphate is more soluble in water than super phosphate of lime
Statement II: The CaSO4 in super phosphate of lime is an insoluble waste product and no value to the plants

3. Statement I: White P is always kept in water whereas metallic sodium can be kept in any anhydrous medium
Statement II: White P reacts with atmospheric oxygen while metallic sodium readily reacts with atmospheric moisture

4. Statement I: Although PF5, PCl5 and PBr5 are known. The pentahalides of nitrogen have not been observed
Statement II: Phosphorous has lower electronegativity than nitrogen

5. Statement I: Nitrogen is unreactive at room temperature but becomes reactive at elevated temperatures or in the presence of catalyst
Statement II: In nitrogen molecule there is extensive delocalisation of electrons

6. Statement I: HNO3 is a stronger acid than HNO2
Statement II: In HNO3 there are two nitrogen to oxygen bonds while in HNO2 there is only one
7. Statement I: Liquid ammonia is used for refrigeration
Statement II: It vaporizes quickly

8. Statement I: The bond angle in PBr3 is greater than PH3 but bond angle in NBr3 is less than that of NH3
Statement II: Size of Br is less than H

9. Statement I: H3PO3 is a dibasic acid
Statement II: Two hydrogen atoms are directly attached to O

10. Statement I: In the preparation of HBr from NaBr, HNO2 is used in preference to H3PO4
Statement II: HNO2 is stronger acid than H3PO4

11. Statement I: The coordination number of 'N' is seldom, if ever 5 where as that of P, which is in the same group, is 5 in a large number of compounds
Statement II: The first IE of nitrogen is more than that of P

12. Statement I: The bond angle in NH3 is more than that of PH3
Statement II: Increasing size and decreasing electronegativity of central atom permit the bonding electrons to be drawn out further, lowering the repulsion between the bonding pairs
13. Statement I: NH3 can be dried by CaCl2
Statement II: CaCl2 is a good dehydrating agent

14. Statement I: PCl5 do not conduct electricity in aqueous solution
Statement II: It hydrolyse to give ions in solution

15. Statement I: Elemental P is much more reactive than elemental nitrogen
Statement II: In P4, all P–P bonds are single covalent bonds while in N2 there is a triple bond between nitrogen atoms

16. Statement I: The dipole moment of NF3 is less than NH3
Statement II: The presence of lone pair of electrons on nitrogen atom shows an additive contribution in dipole moment of NH3 whereas it shows negative contribution towards dipole moment of NF3

17. Statement I: PCl5 conducts current in solid state
Statement II: PCl5 exists PCl6and PCl4+ ions

18. Statement I: Red P glows in dark and in frequently used in glow signs
Statement II: White phosphorous is an allotropic form of red phosphorous

19. Statement I: The electron affinity of 'O' is less than that of 'S'
Statement II: Oxygen atom is smaller in size than 'S' atom

20. Statement I: The atomic radii of elements of oxygen family are smaller than the atomic radii of the corresponding elements of the nitrogen family
Statement II: The members of oxygen family are more electronegative and this have lower values of nuclear charge than those of nitrogen family

21. Statement I: H2O is the only hydride of chalcogen which is liquid at ordinary temperature
Statement II: In ice each ‘O’ atom is surrounded by the covalent bonds and two hydrogen bonds

22. Statement I: A fresh stain of iodine can be readily removed by applying hypo solution
Statement II: Iodine react with hypo to form colourless NaI and sodium tetrathionate

23. Statement I: Tailing of mercury occurs on passing O3 through it
Statement II: This is due to oxidation of mercury to mercurous oxide

24. Statement I: Ozone is a powerful oxidizing agent in comparison to O2
Statement II: Ozone is diamagnetic while O2 is paramagnetic
25. Statement I: SeCl4 does not have a tetrahedral shape
Statement II: Se in SeCl4 has two lone pairs

26. Statement I: H2SO4 forms only one series of salts
Statement II: The molecule of H2SO4 consists of two OH group

27. Statement I: SO3 acts as an oxidizing as well as a reducing agent Statement II: SO2 acts as an oxidizing as well as a reducing agent

28. Statement I: Fluorine can be produced electrolytically
Statement II: Water is oxidized at a much higher potential than fluorine and any fluorine produced will rapidly react with water

29. Statement I: HF is generally stored in wax-coated glass bottles
Statement II: Wax inhibits the decomposition of hydrogen fluoride
30. Statement I: Iodine is more soluble in CCl4 than in water
Statement II: Non-polar solutes are more soluble in non-polar solvents

31. Statement I: Bromine decolourized when added to hot caustic soda solution
Statement II: Bromine undergoes disproportionation on reacting with hot caustic soda solution

32. Statement I: Smell of Cl2 water is lost if it is kept for longer periods
Statement II: Cl2 escapes out of the chlorine water solution gradually leaving behind odourless water

33. Statement I: Preparation of fluorine come across number of difficulties
Statement II: It attacks all materials which are used in the preparation (glass, carbon, H2O)

34. Statement I: Cl–O bond length decreases from ClO to ClO4
Statement II: Percentage of 's' character in hybrid orbitals decreases from ClO to ClO4
35. Statement I: The acid used in etching the glass is HF
Statement II: HF is liquid while other hydrogen halides are gases at room temperature

36. Statement I: PF5 and IF have similar shapes
Statement II: PF5 has to two types of P–F bond lengths

37. Statement I: In the preparation of HBr from NaBr HNO2 is used in preference to H3PO4
Statement II: HNO2 is a stronger acid than H3PO4

38. Statement I: In sea diver gases, the nitrogen of normal air is replaced by helium
Statement II: Nitrogen becomes more soluble in the body fluids at high pressures and cause conditions similar to alcohol intoxication

39. Statement I: Balloons made of mylar films are better for containing helium than the conventional rubber balloons
Statement II: RMS velocity of helium is very high so helium can effuse out through rubber balloons
40. Statement I: Compared to other noble gases xenon is chemically active
Statement II: Xenon has low ionization energy val- ue and vacant ‘d’ orbitals are available for the excitation of electrons from ‘p’ orbitals of valence shell

41. Statement I: He–II has high viscosity and flows downward
Statement II: Liquid helium is used as cryogenic liquid

42. Statement I: Noble gases have highest ionization energies in their respective periods
Statement II: The outer most shell of noble gases is completely filled

1 - 42 - 23 - 14 - 25 - 3
6 - 17 - 18 - 39 - 110 - 2
11 - 212 - 113 - 414 - 315 - 1
16 - 117 - 418 - 419 - 120 - 3
21 - 222 - 123 - 124 - 225 - 3
26 - 327 - 328 - 329 - 330 - 1
31 - 132 - 333 - 134 - 335 - 2
36 - 437 - 1 38 - 139 - 140 - 1
41 - 442 - 343 - 44 - 45 -