Tiêu đề SCORE BOOSTER QUESTIONS 700 UNIQUE QUESTIONS (CHEMISTRY).pdf ✅

1. CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES 1. Royal Society of London gave davy medal to [SBQ] (1) Newland (2) Henery moseley (3) Lother Mayer (4) Mendeleev 2. Ionization potential of Na would be numerically the same as - [SBQ] (1) Electron affinity of Na+ (2) Electronegativity of Na+ (3) Electron affinity of He (4) Ionization potential ofMg 3. The IP1,IP2,IP3,IP4 and IP5 of an element are 7.1, 14.3, 34.5, 46.8, 162.2eV respectively. The element is likely to be- [SBQ] (1) Na (2) Si (3) F (4) Ca 4. The electronic configuration of an element is 1 s 2 , 2s 22p 6 , 3s 23p 4 . The atomic number of the element present just below the above element in the periodic table - [SBQ] (1) 36 (2) 34 (3) 33 (4) 32 5. Which of the atomic number represent Halogen? [SBQ] (1) 115 (2) 119 (3) 117 (4) 121 6. The electronic configurations for some neutral atoms are given below : [SBQ] (i) 1 s 2 , 2 s 22p 6 , 3 s 2 (ii) 1s 2 , 2s 22p 6 , 3s 1 (iii) 1s 2 , 2s 22p 6 , 3s 23p 2 (iv) 1s 2 , 2s 22p 6 , 3s 23p 3 Which of these is expected to have the highest second ionization enthalpy? [SBQ] (1) (i) (2) (ii) (3) (iii) (4) (iv) 7. According to the Modern Periodic Law of elements, the Variation in properties of elements is related to their? [SBQ] (1) Nuclear masses (2) Atomic numbers (3) Nuclear neutron-proton number ratio (4) Atomic masses 8. Which one of the following sets of ions represents a collection of isoelectronic species? [SBQ] (1) N 3−, O 2−, F −,S 2− (2) Li+,Na+, Mg2+, Ca2+ (3) N 3−, O 2−,Na+, Mg2+ (4) Ba2+,Sr2+,K +, Ca2+ 9. Which one of the following has largest size? [SBQ] (1) Na (2) Na+ (3) Na− (4) None of these 10. Which of the following oxide is neutral ? [SBQ] (1) CO (2) SnO2 (3) ZnO (4) SiO2 11. The set representing the correct order of first ionization potential is- [SBQ] (1) K > Na > Li (2) Be > Mg > Ca (3) B> C > N (4) Ge> Si > C 12. Orbitals having minimum shielding effect is : [SBQ] (1) s (2) d (3) p (4) f

In the light of the above statements, choose the most appropriate answer from the options given below : [SBQ] (1) Both Statement I and Statement II are incorrect (2) Statement I is correct but Statement II is incorrect (3) Statement I is incorrect but Statement II is correct (4) Both Statement I and Statement II are correct. 25. Atomic number 114 related to [SBQ] (1) N family (2) C family (3) O family (4) Noble gases 26. IUPAC name of Atomic number 120 is- [SBQ] (1) Unnilbium (2) Ununnilium (3) Unbinilium (4) Unbihexium 27. Which atomic number name dispute on naming results IUPAC naming [SBQ] (1) 110 (2) 101 (3) 104 (4) 105 28. The nature of As2O3 is [SBQ] (1) Amphoteric (2) Acidic (3) basic (4) nane 29. Group 16 is known as - [SBQ] (1) Halogens (2) Chalcogens (3) Noble Gases (4) Alkali metals 30. The number of element in 4 th period of periodic table are - [SBQ] (1) 2 (2) 8 (3) 18 (4) 32 31. The Electronegativity value of F is : [SBQ] (1) 3 (2) 4 (3) 1 (4) 2 32. Which is correct in the following - [SBQ] (1) Radius ofCl atoms is 0.99Å, while that of Cl+ion is 1.54Å (2) Radius ofCl atoms is 0.99Å, while that of Na atom is 1.54Å (3) Radius ofCl atoms is 0.95Å, while that of Cl−ion is 0.81Å (4) Radius ofNa atoms is 0.95Å, while that of Na+ ion is 1.54Å 33. Element with atomic number 38 , belongs to [SBQ] (1) IIA group and 5th period. (2) IIA group and 2nd period. (3) VAgroup and 2nd period. (4) IIIA group and 5th period. 34. In which of the following arrangement the order is not correct according to property indicated against it? [SBQ] (1) Increasing size :Al3+ < Mg2+ < Na+ < F − (2) IncreasingIE1: B < C < N < O (3) IncreasingEA1 : I < Br < F < Cl (4) Increasing metallic nature:Li < Na < K < Rb 35. Be and A are similar in their properties due to similar: [SBQ] (1) ionic potential (charge/size) (2) same electron affinity (3) same group (4) same ionisation potential 36. The electron affinity of magnesium is similar with electron affinity of : [SBQ] (1) Sodium (2) Helium (3) Postassium (4) Chlorine 37. 2 nd ionization enthalpy will be higher than the 1 st ionization enthalpy it is due to : [SBQ] (1) It is more difficult to add ane −to a +vely charged ion (2) It is more difficult to remove ane −from a positively charged ion (3) It is difficult to remove ane −from a
negatively charged ion (4) None 38. Which will the following have maximum and minimum ionization enthalpies respectively : [SBQ] (1) Noble gases, alkali metals (2) Alkali metals, Noble gases (3) Alkaline earth metal, Halogens (4) Noble gases, alkaline earth metals 39. What is the variation of ionization enthalpy along down the group : [SBQ] (1) Decreases (2) Increases (3) Remanins same (4) None of these 40. A qualitative measure of the ability of an atom in a chemical compound to attract shared pair of electron to itself is called : [SBQ] (1) Electron gain enthalpy (2) Electronegativity (3) Electron affinity (4) Ionization enthalpy 41. Which of the following not obeys triad law : [SBQ] (1) Cl, Br, l (2) Li, Na, K (3) F, Cl, Br (4) Ca,Sr, Ba 42. Between Mg and Al which has high IE : [SBQ] (1) Mg (2) Al (3) Both has equal IE (4) None of these 43. Four elements are given, choose the correct order of their first ionisation potential : [SBQ] A. 1s 2 , 2s 1 B. 1s 2 , 2s 22p 6 C. 1 s 2 , 2 s 22p 2 D. 1s 2 , 2s 22p 1 (1) A> B > C > D (2) D> C > B > A (3) B> C > D > A (4) B> D > C > A 44. The lowest ionization energy would be associated with the electronic structure : [SBQ] (1) 1s 2 , 2s 2 , 2p 6 , 3s 1 (2) 1 s 2 , 2 s 2 , 2p 5 (3) 1 s 2 , 2 s 22p 6 (4) 1 s 2 , 2 s 22p 6 , 3 s 2 45. Considering the element B, C, N, F and Si, the correct order of their non-metallic character is : [SBQ] (1) B> C > Si > N > F (2) Si> C > B > N > F (3) F > N > C > B > Si (4) F> N > C > Si > B 46. The correct order of electron affinity of the elements of oxygen family in the periodic table is: [SBQ] (1) O > S > Se (2) S > O > Se (3) S > Se > O (4) Se > O > S 47. Consider the isoelectronic series : K +,S 2−, Cl−and Ca2+, the radii of the ions decrease as : [SBQ] (1) Ca2+ > K + > Cl− > S 2− (2) Cl− > S 2− > K + > Ca2+ (3) S 2− > Cl− > K + > Ca2+ (4) K + > Ca2+ > S 2− > Cl− 48. Which of the following ionic radius would be maximum: [SBQ] (1) C 4− (2) N 3− (3) O 2− (4) Mg2+ 49. Element, the electronic configuration of which is 1s 2 , 2s 2 , 2p 6 , 3s 2 , 3p 6 , 3d 10 , 4s 2 , 4P 64d 10 , 5s 2 , 5p 3 belongs to the following group of the Periodic Table : [SBQ] (1) 2 nd (2) 15th (3) 3 rd (4) 7 th 50. The element with the electronic configuration as [Ar]3d 104s 24p 3 represents a : [SBQ] (1) metal (2) non-metal (3) metalloid (4) transition element