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Inorganic Chemistry (p - Block Elements)

Inorganic Chemistry (P - Block Elements) - Free Online Tests P Block Elements for Class XI/XII and Study Materials for P-Block Elements

18 Questions Published
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Questions

Question 1 Multiple Choice (Single Answer)

The I. E. of group 15 is much larger than that of group 14 because of

  1. the smaller size
  2. the half filled p - orbitals
  3. high electronegativity
  4. none of the above
Question 2 Multiple Choice (Single Answer)

In the fifteenth group of the periodic table, there is a considerable increase in the covalent radius from N to P, but from As to Bi, there is only a small increase. The reason is

  1. shielding effect
  2. completely filled d and f orbitals in heavier members
  3. ionisation energy
  4. electronegativity
Question 3 Multiple Choice (Single Answer)

Out of all the elements of group15, only nitrogen can form multiple bonds due to

  1. non-avalibility of d - orbital
  2. half filled p - orbitals
  3. the smallest size among all members
  4. the lowest electronegativity
Question 4 Multiple Choice (Single Answer)

Nitrogen does not show covalency greater than four because

  1. of tetrahedral structure
  2. of half filled p - orbitals
  3. there are four unpaired electrons in the valence cell
  4. of non-avalibility of d - orbitals
Question 5 Multiple Choice (Single Answer)

In group 15, the stability of +3 oxidation state increases down the group due to

  1. inert pair effect
  2. low shielding
  3. half filled p - orbital
  4. presence of d - orbital
Question 6 Multiple Choice (Single Answer)

Which of following reasons is not responsible for anomalous properties of nitrogen?

  1. Diagonal relationship
  2. Smaller size
  3. Non-avalibility of d-electrons
  4. High ionisation enthanlpy
Question 7 Multiple Choice (Single Answer)

The heavier elements of group 15 do not form multiple bonds because of

  1. high lonisation enthalpies
  2. low lonisation enthalpies
  3. lack of effective overlapping
  4. avalibility of d - orbitals
Question 8 Multiple Choice (Single Answer)

In the process of manufacture of ammonia, the condition required to get the maximum yield is

  1. high pressure
  2. high temperature
  3. low pressure
  4. low temperature
Question 9 Multiple Choice (Single Answer)

Name the process of manufacturing of ammonia.

  1. Contact process
  2. Haber's process
  3. Ostwald process
  4. Electrolytic process
Question 10 Multiple Choice (Single Answer)

Ammonia has high melting and boiling point because of

  1. high electronegativity of nitrogen
  2. compact structure of ammonia
  3. lone pair of electrons
  4. hydrogen bonding
Question 11 Multiple Choice (Single Answer)

Nitrogen cannot form pentahalides because of

  1. high lonization enthalpy
  2. small size
  3. high electronegativity
  4. non-availability of d - orbital
Question 12 Multiple Choice (Single Answer)

Ammonia reacts with copper ions to give

  1. red colour
  2. a white precipitate
  3. deep blue colour
  4. light red or blue colour
Question 13 Multiple Choice (Single Answer)

The elements of group 16 can also be called

  1. halogens
  2. chalcogens
  3. alkali metals
  4. none of the above
Question 14 Multiple Choice (Single Answer)

Phosphorous can form pentahalides. Why?

  1. It has low Ionisation enthalpy.
  2. It has vacant d - orbitals.
  3. It has an affinity for electronegativity atoms.
  4. Its size is not very large.
Question 15 Multiple Choice (Single Answer)

What is the oxidation state of phosphorous in phosphorous trichloride?

  1. +1
  2. +2
  3. +3
  4. 0
Question 16 Multiple Choice (Single Answer)

The shape of ammonia molecule is

  1. pyramidal
  2. tetrahedral
  3. square pyramidal
  4. linear
Question 17 Multiple Choice (Single Answer)

Ammonia is a base because

  1. it can recieve the proton
  2. it has a lone pair of electron
  3. it can form stable anion
  4. it can donate a proton
Question 18 Multiple Choice (Single Answer)

Water is a liquid, while hydrogen sulphide is a gas at room temperature. The reason is

  1. that the size of oxygen is smaller than that of sulphur
  2. that sulphur can expand its valency
  3. the anomalous behaviour of oxygen
  4. the tendency of water molecules to form hydrogen bonds
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