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p-Block Elements - 2

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

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Questions

Question 1 Multiple Choice (Single Answer)

The compounds of oxygen and fluorine are called fluorides because

  1. fluorine has higher electronegativity
  2. fluorine is more reactive than oxygen
  3. oxygen can form positive ion
  4. none of the above
Question 2 Multiple Choice (Single Answer)

The ionisation enthalpy of group 15 elements is higher than that of group 16 because of

  1. inert pair effect
  2. atomic size
  3. extra stable electronic configuration
  4. it is easier to donate three electrons rather than four electrons
Question 3 Multiple Choice (Single Answer)

Why nitrogen is diatomic and phosphorous is polyatomic?

  1. Less reactivity of nitrogen than phosphorous.
  2. High electronegativity of nitrogen than phosphorous.
  3. Ability of nitrogen to form multiple bonds unlike phosphorous.
  4. Availability of d-orbital in phosphorous.
Question 4 Multiple Choice (Single Answer)

The most common xenon halide is

  1. iodide
  2. bromide
  3. chloride
  4. fluoride
Question 5 Multiple Choice (Single Answer)

The most ionic metal halide is

  1. fluoride
  2. chloride
  3. bromide
  4. iodide
Question 6 Multiple Choice (Single Answer)

Which of the following is a powerful bleaching agent?

  1. Fluorine
  2. Chlorine
  3. Bromine
  4. Iodine
Question 7 Multiple Choice (Single Answer)

Which of the following is liquid at room temperature?

  1. HF
  2. HCl
  3. HBr
  4. HI
Question 8 Multiple Choice (Single Answer)

Sulphuric acid is

  1. a reducing agent
  2. an oxidising agent
  3. both oxidising and reducing agent
  4. highly volatile
Question 9 Multiple Choice (Single Answer)

In oxygen difluoride, the oxidation state of oxygen is

  1. - 2
  2. - 1
  3. + 1
  4. + 2
Question 10 Multiple Choice (Single Answer)

The reducing character of hydrides of group 15 elements increases down the group due to

  1. the presence of d and f electrons
  2. increases in bond length
  3. both (1) and (2)
  4. neither (1) nor (2)
Question 11 Multiple Choice (Single Answer)

Which of the following does not have ability to form complexes?

  1. Nitrogen
  2. Phosphorous
  3. Arsenic
  4. Antimony
Question 12 Multiple Choice (Single Answer)

Fluorine has smaller bond dissociation enthalpy than chlorine because of

  1. high electronegativity of fluorine
  2. small size of fluorine
  3. large crowding of electrons in fluorine
  4. more reactivity of fluorine
Question 13 Multiple Choice (Single Answer)

The compounds of oxygen and chlorine are called

  1. oxides
  2. chlorides
  3. either oxides or chlorides
  4. such compounds are not possible
Question 14 Multiple Choice (Single Answer)

Nitrogen cannot form pentahalides because

  1. nitrogen is chemically inert
  2. nitrogen has the highest electronegativity in the group 15
  3. nitrogen does not contain d - orbitals
  4. nitrogen does not show positive valency
Question 15 Multiple Choice (Single Answer)

Oxygen is

  1. diamagnetic
  2. paramagnetic
  3. ferromagnetic
  4. ferrimagnetic
Question 16 Multiple Choice (Single Answer)

Water is a liquid while hydrogen sulphide is a gas due to

  1. hydrogen bonding
  2. low melting point of ice
  3. water is a universal solvent
  4. small size of oxygen than that of sulphur
Question 17 Multiple Choice (Single Answer)

Which of the following dissolves in conc. nitric acid?

  1. Platinum
  2. Sulphur
  3. Oxygen
  4. Gold
Question 18 Multiple Choice (Single Answer)

Nitrogen is a gas while phosphorous is solid because

  1. nitrogen is diatomic while phosphorous is poly atomic
  2. nitrogen shows anomalous behaviour
  3. the electronegativity of nitrogen is highest
  4. nitrogen does not have -d and -f orbitals
Question 19 Multiple Choice (Single Answer)

Which of the following is chemiluminescence?

  1. White phosphorous.
  2. Red phosphorous.
  3. Black phosphorous.
  4. Phosphorous does not show this property.
Question 20 Multiple Choice (Single Answer)

The bond angle of ammonia is lesser than tetrahedral angle because

  1. bond pair - bond pair repulsion
  2. of lone pair of electrons
  3. ammonia has trigonal pyramidal shape
  4. ammonia is a liquid
Question 21 Multiple Choice (Single Answer)

What is the shape of nitric acid?

  1. Bent molecule
  2. T - shaped
  3. Pyramidal
  4. Planar
Question 22 Multiple Choice (Single Answer)

When phosphorous trichloride is kept in moisture, it gives fumes of

  1. phosphoric acid
  2. phasphorous pentachloride
  3. phasphorous trichloride
  4. hydrochloric acid
Question 23 Multiple Choice (Single Answer)

Metals like Cr and Al do not dissolve in concentrated nitric acid because

  1. they are inert
  2. they are less reactive
  3. they are rendered passive by oxide film
  4. they are difficult to oxidise
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