Page Number- 3

(1) The maximum covalency of Al is??

  • A. 1
  • B. 3
  • C. 6
  • D. 8
0
(c) 6

(2) Which of the following is amphoteric oxide??

  • A. Al₂O₃
  • B. N₂O
  • C. Na₂O
  • D. CO₂
0
(a) Al₂O₃

(3) N³⁻ and Na⁺ ions have same ?

  • A. Atomic number
  • B. Mass number
  • C. Number of element
  • D. Same number of neutrons
0
(c) Number of element

(4) Which of the following metals is a typical d-block element?

  • A. Zn
  • B. Cr
  • C. Cd
  • D. Hg
0
(b) Cr

(5) Which of the following properly generally increases down the group??

  • A. Atomic radius
  • B. Ionization enthalpy
  • C. Electronegativity
  • D. Electron gain enthalpy
0
(a) Atomic radius

(6) Which of the following is not a characteristic of d-block element??

  • A. Metallic nature
  • B. Coloured ions
  • C. Radioactive nature
  • D. Paramagnetic nature
0
(c) Radioactive nature

(7) Element with the highest I.E. in the periodic table is??

  • A. He
  • B. F
  • C. N
  • D. O
0
(a) He

(8) Find out the correct order of size??

  • A. Na+ > Mg²⁺ > Al³⁺
  • B. F⁻ > O²⁻ > N³⁻
  • C. F > F⁻ > O²⁻
  • D. I⁺ > I > I⁻
0
(a) Na+ > Mg²⁺ > Al³⁺

(9) Which of the following is an amphoteric oxide??

  • A. NO
  • B. As₂O₃
  • C. Cl₂O₇
  • D. Na₂O
0
(b) As₂O₃

(10) The First member of a group of elements in the s-block and p-block shows anomalous behaviour due to its??

  • A. Smll size
  • B. Large ratio (charge/ radius)
  • C. High electronegativity
  • D. All of these
0
(d) All of these
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