11. Noble gases are group of elements which exhibit very *
(a) High chemical activity
(b) Much paramagnetic properties
(c) Minimum electronegativity
(d) High ionization enthalpies
Q 12. The ionic character in H-X bond is highest in *
(a) HBr
(b) HI
(c) HF
(d) HCl
Q 13. Which of the following group 16 element has maximum catenation capacity? *
(a) S
(b) Se
(c) O
(d) Te
Q 14. Which one of the following exhibits the largest number of oxidation states? *
(a) Ti (22)
(b) Cr (24)
(c) V (23)
(d) Mn (25)
Q 15. Which of the following oxidation state is common for all lanthanides? *
(a) +2
(b) +3
(c) +4
(d) +5
Q 16. Which of the following statements about the interstitial compounds is incorrect? *
(a) They retain metallic conductivity
(b) They are chemically reactive
(c) They are much harder than the pure metal
(d) They have higher melting points than the pure metal
Q17. In addition to uranium, which other actinoid occurs naturally in Significant amounts? *
(a) Actinium
(b) Plutonium
(c) Protactinium
(d) Thorium
Q 18. The IUPAC name of the complex [Co (NH₃)₄ Cl₂] Cl is *
(a) tetraammine trichloro cobalt (III) chloride
(b) dichloro tetraammine cobalt (III) chloride
(c) tetraammine dichloro cobalt (IV) chloride
(d) tetraammine dichloro cobalt (III) chloride
Q 19. The number of unidentate ligands in the complex ion is called *
(a) EAN
(b) primary valency
(c) oxidation number
(d) Coordination number
Q 20. Which of the following is not considered as an organometallic compound? *
(a) Ziese's salt
(b) Ferrocene
(c) Cis − platin
(d) Grignard reagent
Answers
Noble gases are group of elements which exhibit very...
▬ (d) High ionization enthalpies
► Noble gases are a group of elements that exhibit very high Ionization entahalpies.
The ionic character in H-X bond is highest in...
▬ (c) HF
► The ionic character in H-X bond is highest in Hydrogen Fluoride (HF).
Which of the following group 16 element has maximum catenation... capacity?...
▬ (a) S
► Sulfur, group 16 element has a maximum catenation capacity.
Which one of the following exhibits the largest number of oxidation states?...
▬ (d) Mn (25)
► Maganese (Mn) exhibits a large number of oxidation states.
Which of the following oxidation state is common for all lanthanides?...
▬ (b) +3
► Elements of lanthanide series generally show the oxidation state of +3, So +3 oxidation is the state is common for all lanthanides.
Which of the following statements about the interstitial compounds is incorrect?...
▬ (b) They are chemically reactive
► The interstitial compounds are chemically inert as the impurity ions are present in the interstitial sites.
In addition to uranium, which other actinoid occurs naturally in Significant amounts?...
▬ (d) Thorium
►Thorium is the other actinoid occurs naturally in Significant amounts, in addition to Uranium.
The IUPAC name of the complex [Co (NH₃)₄ Cl₂] Cl is...
▬ (d) tetraammine dichloro cobalt (III) chloride
► The IUPAC name of the complex [Co (NH₃)₄ Cl₂] Cl is Tetraammine dichloro Cobalt (III0 Chloride.
The number of unidentate ligands in the complexion is called...
▬ (d) Coordination number
► The number of unidentate ligands in the complexion is called the coordination number.
Which of the following is not considered as an organometallic compound?...
(c) Cis–platin
► Cisplatin is not considered as an organometallic compound.
☼☼☼☼☼☼☼☼☼☼☼☼☼☼☼☼☼☼☼☼☼☼☼☼☼☼☼☼☼☼☼☼☼☼☼☼