Chemistry(II) Chapter 1 & 2
Chemistry(II) Chapter 1 & 2
1. Which of the following pairs are chemically
dissimilar?
(A) Na and K (B) Ba and Sr
(C) Zr and Hf (D) Ca and Zn.
2. The total number of inner transition elements
is
(A) 10 (B) 14
(C) 28 (C) 30
3. The alkali metal which is liquid at 15oC is
(A) K (B) Cs
(C) Na (D) None
4. Which of the following ion will form most water
soluble hydroxide?
(A) K+ (B) Ni2+
(B) Zn2+ (C) Al3+
5. Which of the following has greatest tendency to lose electron?
(A) F (B) Fr
(B) S (C) Be.
6. The oxide of which of the following elements will be acidic in character
(A) Mg (B) Rb
(C) Li (C) CI
7. Which of the following is isoelectronic with carbon atom?
(A) Na+ (B) Al3+
(C) O2- (D) N+
8. Which of the following ions are paramagnetic in character?
(A) Zn2+ (B) Cu+
(C) Ni2+ (D) Ag+
9. Ca2+ ion is isoelectronic with
(A) Mg2+ (B) Na+
(C) Ar (D) Kr
10. Gradual addition of electronic shells in the noble gases causes a decrease in their
(A) Ionization energy (B) atomic radius
(C) Boiling point (D) density
11. Which of the following has highest first ionization potential?
(A) Carbon (B) Oxygen
(C) Nitrogen (C) Boron.
12. Which of the following has the smallest size?
(A) Na+ (B) Mg2+
(C) Al3+ (D) CI
13. Which of the following element has the maximum electron affinity?
(A) F (B) S
(C) I (D) CI.
14. Which of the following is isoelectronic as well as has the same structure as that of N2O ?
(A) N3H (B) H2O
(B) NO2 (C) CO2
15. The atomic radius increases as we move down a group because
(A) Effective nuclear charge increases
(B) Atomic mass increases
(C) Additive electrons are accommodated in new electron level
(D) Atomic number increase.
16. Which one of the following is an incorrect statement?
(A) The ionization potential of nitrogen is greater than that of chlorine
(B) The electron affinity of fluorine is greater than that of chlorine
(C) The ionization potential of beryllium is greater than that of boron
(D) The electronegativity of fluorine is greater than that of chlorine.
17. Electron affinity depends on
(A) Atomic size
(B) Nuclear charge
(C) Atomic number
(D) Atomic size and nuclear charge both.
18. Two elements whose eletronegativities are 1.2 and 3.0, the bond formed between them would be
(A) Ionic
(B) covalent
(C) Coordinate
(D) metallic.
19. Ionic radii are
(A) Directly proportional to square of effective nuclear charges
(B) Inversely proportional to effective nuclear charge
(C) Inversely proportional to square of effective nuclear charge
(D) Directly proportional to effective nuclear charge.
20. Which of the following oxides is atmospheric in character?
(A) CaO (B) CO2
(C) SiO2 (D) SnO2
21. Mark the correct statement:
(A) Na+ is smaller than Na atom
(B) Na+ is larger than Na atom
(C) CI- is smaller than CI atom
(D) CI- and CI are equal in size
22. Who introduced the zero groups?
(A) Lothar Meyer (B) Lockery
(C) Mendleev (D) Ramsay
23. Element, of group I-B are called
(A) Representative elements
(B) Transition elements
(C) Rare earth
(D) Coinage metals
24. The element with Z = 24 is placed in the period
(A) 5 (B) 2
(C) 3 (D) 4
25. Which is the part of metalloids?
(A) NA and K (B) F and CI
(C) None of these (D) Cu and Au
26. Which one of the following has the maximum electron affinity?
(A) I (B) Br
(C) CI (D) F
27. On electrolysis of NaH, hydrogen is liberated
(A) At anode (B) in the electrolyte
(C) At cathode (D) none of them
28. Elements with greater number of electrons have _________values of ionization energy.
a) Only one b) More than one
c) Zero d) Infinite
29. Which of the following possess maximum hydration power?
a) Na+ b) K+
c) Mg+2 d) Ca+2
30. Higher value of electron affinity means_________
a. Atom will lose electron easily
b. Atom will gain electron easily
c. Atom may form di-positive ion
d. The reason is unknown
31. Melting points of VII-A group ___________ down the group
a. Increase b Decrease
c. Remain constant d. No regular trend
32. Oxidation state of an atom represents______
a. No. of electrons gained
b. No. of electrons lost
c. No. of electrons gained or lost
d. None of above correctly represent it
33. Mendeleev’s periodic table was based on
a) Atomic number b) Atomic mass
c) Atomic volume d) Electronic configuration
34. Elements present in a same group have the same
a) Atomic number
b) Molecular weight
c) Chemical properties
d) Electronic configuration
35. “s” and “p” block elements are also called
a) Transition elements
b) Inert elements
c) Typical elements
d) Rare earth elements
36. What is the symbol of the element with only three electrons and three protons?
a) Li b) C
c) Ag d) Cu
37. Elements with seven electrons in their valence shell are known as
a) Inert b) Lanthanides
c) Halogens d) Alkali metals
38. Which of the following pairs of elements are chemically most similar?
a) Na and Al b) Cu and Cu
c) S and F d) Sc and Zn
39. A student of chemistry will identify positively the following symbols as sodium
a) b)
c) d)
40. In the periodic table each period begins with a metal, which is
a) Most electronegative
b) Most electropositive
c) Less electropositive
d) Less electronegative
41. Which one of the following is not a coinage metal?
a) Au b) Cu
c) Ag d) Pd
42. Which is the most metallic element of 2nd period?
a) Lithium b) Beryllium
c) Boron d) Carbon
43. The outer most orbital involved in chemical bonding is called
a) Molecular orbital b) Complete orbital
c) Valence orbital d) Free orbital
44. Elements, which form basic oxides are
a) Electropositive b) Electronegative
c) Inert d) None of these
45. Which of the following has the most basic character?
a) Na2O b) MgO
c) Al2O3 d) P2O3
46. Which of the following is smallest in size?
a) K+1 b) O-2
c) F-1 d) Na+
47. Ionization energy is lowest for
a) Inert gases b) Halogens
c) Alkali metals d) Alkaline earth metals
48. An isotope of hydrogen is
a) Neptunium b) Plutonium
c) Thorium d) Tritium
49. With respect to chlorine, hydrogen will be
a) Electropositive b) Electronegative
c) Neutral d) None of these
50. Which of the following has the highest electron affinity?
a) 1S2 2S2 2P3 b) 1S2 2S2 2P6 3S1
c) 1S2 2S2 2P5 d) 1S2 2S2 2P5
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