RICE Smart Chemistry Past Paper PDF

WBCS AND PSC PRO SM d 2n CORE LEVEL FOURTH CLASS HANDOUT - 2 1. The first transition element of periodic table is— a) Mercury...

WBCS AND PSC PRO SM d 2n CORE LEVEL FOURTH CLASS HANDOUT - 2 1. The first transition element of periodic table is— a) Mercury b) Scandium c) Zinc d) Iron 2. Mendeleev forecasted three elements namely— a) Al, Si, Sc b) Ga, Ge, Al c) Sc, Ga, Ge d) B, Si, Al 3. First lanthanoid element is— a) Cs b) Ce c) Lr d) Cd 4. Which of the following is the strongest oxidising agent? a) F b) Cl c) Br d) I 5. The least electronegative element is— a) Cl b) Br c) Ne d) Cs 6. Stranger gas is— a) Helium b) Neon c) Xenon d) Fluorine 7. Ionisation energy is lowest in which group of the periodic table? a) VII b) IX c) IA d) IV 8. The smallest Cation is— a) Li+1 b) H+1 c) Cs+1 d) Ca2+ 9. The lightest non-inflammable gas is— a) Hydrogen b) Helium c) Carbon dioxide d) Oxygen 10. In which of the following elements electron affinity is zero? a) Cs b) F c) Ne d) Cl 11. The coinage metals are placed in ____ group of the periodic table. a) IA b) IIA c) IB d) VIII 12. Name the element which is situated in the first period. a) Hydrogen b) Helium c) Lithium d) both (a) & (b) © : RICE EDUCATION : DISHARI HOUSE, BELGHARIA, 11/1 B.T. ROAD,RATHTALA, KOLKATA - 700056. 1  MCQs/WBCS & PSC/4th Class/ Chemistry 2 13. Which property does not change in a group of periodic table? a) Electronegativity b) Atomic Size c) Valency d) Ionisation Energy 14. Natural hardest element/substance is— a) Silicon carbide b) Boron carbide c) Diamond d) Tungsten 15. Inert gases are present in which block in the periodic table? a) s-block b) p-block c) d-block d) f-block 16. Ionisation energy is the highest for— a) Fluorine b) Silver c) Helium d) Xenon 17. Chalcogens are situated in— a) Group–I b) Group–VII c) Group–II d) Group–VI 18. Which of the followings are the similar type of elements? a) Ne, Si b) C, Ca c) O, S d) Na, Cl 19. Atomic number of an element is 20. In which period of the periodic table, the element will be present? a) 3rd b) 2nd c) 4th d) 6th 20. Diagonal relationship is not shown by— a) Li and Mg b) C and P c) Be and Al d) B and Si 21. Electron affinity is the highest for— a) Fluorine b) Chlorine c) Oxygen d) Nitrogen 22. Super halogen is— a) Chlorine b) Astatine c) Iodine d) Fluorine 23. The mono atomic gases are present in which group of periodic table? a) I b) II c) IX d) VII 24. According to Modern Periodic Law, the physical and chemical characteristics of the elements are a function of— a) Mass number b) Neutron number c) Atomic weight d) Atomic number 25. In which group we observe the solid liquid and gaseous elements? a) Halogen b) Chalcogen c) Coinage metal d) Pnicogen 26. The first transition series is present in which period? a) 1st b) 3rd c) 4th d) 5th 27. In a period, lithium (Li) to neon (Ne) ionization potential— a) remains same b) increases c) decreases d) decreases or increases 28. The liquid element which is radioactive, is— a) Uranium (U) b) Francium (Fr) c) Radon (Rn) d) Radium (Ra) 29. The smallest anion is— a) F– b) Cl– c) O2– d) Br2– 30. The law of ‘octave’ was given by— a) Mendeleeff b) Newland c) Moseley d) Dobereiner 31. Noble gases are chemically inactive because of— a) closed valence shell b) mono-atomic nature c) rare occurrence d) low boiling point © : RICE EDUCATION : DISHARI HOUSE, BELGHARIA, 11/1 B.T. ROAD,RATHTALA, KOLKATA - 700056.  MCQs/WBCS & PSC/4th Class/ Chemistry 3 32. Eka-aluminium and Eka-silicon are known as— a) Aluminium and Silicon b) Gallium and Germanium c) Boron and Carbon d) Indium and Tin 33. Modern periodic table is based on the atomic number of the elements.The experiment which proved the significance of the atomic number was- a) Bragg’s work on X-ray diffraction b) Discovery of X-rays by Rontgen c) Moseley’s work on X-ray spectra d) Mulliken’s oil drop experiment 34. If the atomic number of an element is 20, it will be placed in the periodic table in the— a) first group b) second group c) fourth group d) fifth group 35. The most malleable metal is— a) Ag b) Na c) Au d) Hg 36. The element which has the highest melting point— a) Diamond (c) b) Tungsten (W) c) Mercury (Hg) d) Helium (He) 37. Which pair of atomic numbers represents s-block elements? a) 7, 15 b) 6, 12 c) 9, 17 d) 3, 12 38. Variable valency is a general feature of— a) s-block elements b) d-block elements c) p-block elements d) f-block elements 39. which of the following are the volatile transition elements? a) Na, K, Rb b) He, Ne, Ar c) Zn, Cd, Hg d) F, CI, Br 40. Representative elements belong to— a) s & p-block b) d-block c) f-block d) d & f-block 41. The atomic size increases as we move down a group because— a) atomic mass increases b) atomic number increases c) effective nuclear charge increases d) additive electrons are accommodated in new shell 42. Electronegativity refers to the tendency of atom to— a) lose electrons b) repel electrons c) attract bonding electrons d) share electrons with other atoms 43. Down the group electronegativity— a) increases b) decreases c) remains the same d) first increases, then decreases 44. Which element has the highest electronagativity? a) Cl b) Cs c) F d) I 45. The ionisation energy of an atom is the energy— a) needed to add an electron to an atom b) needed to transfer an electron from one orbit to another c) needed to convert the atom into a radio active isotope d) just enough to cause the electron to escape from the isolated atom 46. Across a period, oxidising power of the elements a) increases b) decreases c) no change d) none of these 47. The total number of ‘Liquid Elements’ in the periodic table is— a) 4 b) 5 c) 6 d) 7 48. Indicate the wrong statement on the basis of the periodic table. a) The most electronegative element is Fluorine b) Scandium is the first transition element & belongs in the fourth period c) Helium is the lightest element d) Most abundant inert gas in atmosphere is argon 49. The elements which occupy their positions in periodic table just after the members of zero group are- a) radioactive b) coinage metal c) alkali metals d) halogens 50. Be, Mg, Ca are collectively known as— a) alkali metals b) chalcogens c) alkaline earth metal d) coinage metals ————::———— © : RICE EDUCATION : DISHARI HOUSE, BELGHARIA, 11/1 B.T. ROAD,RATHTALA, KOLKATA - 700056.