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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

25 Questions Published
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Questions

Question 1 Multiple Choice (Single Answer)

What is the oxidation state of nitrogen in nitrogen dioxide?

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

Brown ring test is for

  1. nitric acid
  2. nitrate
  3. nitrous oxide
  4. nitrogen
Question 3 Multiple Choice (Single Answer)

Directions: The following question has four choices out of which ONLY ONE is correct.

The oxidation state of nitrogen in dinitrogen oxide is

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

White phosphorous readily catches fire in air and is unstable due to

  1. affinity for oxygen
  2. angular strain
  3. both (1) and (2)
  4. neither (1) nor (2)
Question 5 Multiple Choice (Single Answer)

Aqua regia is

  1. nitrous oxide and water
  2. sulphuric acid and water
  3. nitric acid and water
  4. ammonia and water
Question 6 Multiple Choice (Single Answer)

The gas which is highly poisonous is

  1. nitrogen
  2. carbon dioxide
  3. chlorine
  4. phosphine
Question 7 Multiple Choice (Single Answer)

The bond angle in white phosphorous, in degrees, is

  1. 104
  2. 109
  3. 180
  4. 60
Question 8 Multiple Choice (Single Answer)

The shape of phosphorous pentachloride is

  1. trigonal bipyramidal
  2. trigonal pyramidal
  3. pentagonal
  4. none of the above
Question 9 Multiple Choice (Single Answer)

When phosphorous pentachloride is heated, one of the products is

  1. chloride ion
  2. chlorine
  3. hydrogen chloride
  4. no change is observed
Question 10 Multiple Choice (Single Answer)

Among the five bonds in phosphorous pentachloride

  1. all are equivalent
  2. three bonds are axial and two are equatorial
  3. two bonds are axial and three are equatorial
  4. all the bonds are unequal
Question 11 Multiple Choice (Single Answer)

In orthophosphorous, the oxidation state of phosphorous is

  1. + 1
  2. + 2
  3. + 3
  4. + 4
Question 12 Multiple Choice (Single Answer)

The basicity of orthophosphoric acid is

  1. 1
  2. 2
  3. 3
  4. 4
Question 13 Multiple Choice (Single Answer)

What is the covalency of oxygen?

  1. One
  2. Two
  3. Three
  4. Four
Question 14 Multiple Choice (Single Answer)

Stability of which of the following oxidation states increases down the group 16 of the periodic table?

  1. + 2
  2. - 2
  3. + 4
  4. - 4
  5. + 6
Question 15 Multiple Choice (Single Answer)

Why oxygen is diatomic while sulphur is polyatomic?

  1. Oxygen can form multiple bonds.
  2. Oxygen shows anomalous behaviour.
  3. Sulphur is more reactive than oxygen.
  4. The oxidation state of oxygen is two.
Question 16 Multiple Choice (Single Answer)

Pure ozone gas is

  1. dark blue
  2. pale blue
  3. voilet black
  4. colourless
Question 17 Multiple Choice (Single Answer)

Sulphuric acid is

  1. monoprotic acid
  2. diprotic acid
  3. triprotic acid
  4. none of the above
Question 18 Multiple Choice (Single Answer)

Sulphuric acid is not

  1. less volatile
  2. an oxiding agent
  3. a reducing agent
  4. a dehydrating agent
Question 19 Multiple Choice (Single Answer)

The process of manufacture of sulphuric acid is

  1. haber's process
  2. contact process
  3. ostwald process
  4. electrolysis
Question 20 Multiple Choice (Single Answer)

Oleum is prepared from

  1. sulphuric acid
  2. sulphur dioxide
  3. sulphur trioxide
  4. sulphur and water
Question 21 Multiple Choice (Single Answer)

Most of the reactions of fluorine are exothermic because

  1. of high I. E. of fluorine
  2. of small and strong bonds formed by fluorine
  3. of its small size
  4. of non-availability of d - orbitals
Question 22 Multiple Choice (Single Answer)

Which of the following is solid?

  1. Fluorine
  2. Chlorine
  3. Bromine
  4. Iodine
Question 23 Multiple Choice (Single Answer)

AgCl reacts with ammonia to give a

  1. colourless solution
  2. white precipitate
  3. yellow precipitate
  4. deep blue colour
Question 24 Multiple Choice (Single Answer)

The reactivity of dinitrogen is very low because

  1. in this the octet of both nitrogen atoms is complete
  2. nitrogen has no vacant d - orbital
  3. the maximum covalency of nitrogen is 4
  4. there is a triple bond between two nitrogen atoms
Question 25 Multiple Choice (Single Answer)

The basicity of polymetaphosphoric acid is

  1. 1
  2. 2
  3. 3
  4. 4
  5. none of the above
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