MPSC LECTURER IN BOTANY Screenig Test 2011 Question Paper

MPSC LECTURER IN BOTANY Screenig Test 2011 Question Paper

1. The angular momentum quantum number is denoted by which letter?

(1) n

(2) s

(3) m

(4) l

2. “No two electrons in an atom can have same set of four indentical quantum numbers.” It is the statements of

(1) Aufbau’s principle

(2) Hund’s rule

(3) Pauli’s exclusion principle

(4) None of these

3. The effective nuclear charge zeta is nearly equal, to the nuclear charge for which orbital?

(1) 1s orbital

(2) Outermost orbital

(3) 2p orbital

(4) Total nuclear charge of all orbitals

4. The molecule among CCI₄, PCI₃, SF₄ and NH₃, which does not contain lone pair of electrons around central atom is

(1) CCI₄

(2) PCI₃

(3) SF₄

(4) NH₃

5. What is the bond order of carbon monoxide (CO) as per the molecular orbital configuration?

(1) Four

(2) Six

(3) Three

(4) Eight

6. The magnitude of forces of attraction between the molecules of polar as well as non-polar substances is maximum in case of

(1) Solids

(2) Liquids

(3) Gases

(4) Colloids

7. s-block elements consist of metals

(1) Highly electro-positive elements

(2) Low electro-positive elements

(3) Highly electro-negative elements

(4) Moderately electro-negative elements

8. Alkali metals have minimum effective nuclear charge and hence they have the

(1) Smallest atomic radii

(2) Smallest atomic radii in their respective periods

(3) Largest atomic radii

(4) Largest atomic radii in their respective periods

9. Diagonal relationship existing between a pair of s-block elements can be explained on the basis of

(1) Atomic volume and density

(2) Metallic and non-metallic character

(3) Polarising power and electro negativity

(4) Atomic and ionic radii

10. The hydrides of the elements of which group are electron deficient and act as Lewis acid

(1) Gr. IA

(2) Gr. IIIA

(3) Gr. IVB

(4) Gr. IB

11. Which halogen cannot form any interhalogen compound?

(1) Iodine

(2) Chlorine

(3) Bromine

(4) Fluorine

12. Perovskite is the mineral having structure

(1) CaTiO₃

(2) FeTiO₃

(3) MgTiO₃

(4) MgA1₂O₄

13. The purple colour of [Ti (H₂O)₆]³⁺

(1) Unpaired d-electron

(2) Transfer of an electron

(3) Presence of water molecule

(4) Reflection of light

14. In CoCl₃, 6NH₃, CoCl₃, 5NH₃, CoCl₃, 4NH₃, and CoCl₃, 3NH₃ since the secondary valency of Co atom is six, each amine has

(1) Trigonal planar geometry

(2) Tetrahedral geometry

(3) Linear geometry

(4) Octahedral geometry

15. The proper name of the compound [Co(NH₃)₅Co₃]CI is

(1) Pentaammine carbonato cobalt (III) chloride

(2) Carbonato Pentaammine cobalt (III) chloride

(3) Chloro pentaammine cobalt (III) carbonate

(4) Pentaammine carbonato cobalt (II) Choride

16. Silica readily dissolves in

(1) HF

(2) HCI

(3) HI

(4) HNO₃

17. The most common oxidation state of lanthanides is

(1) +4

(2) +3

(3) +5

(4) +7

18. On alkylation of diborane, the product formed is

(1) Hexaalkyl diborane

(2) Tetraalkyl disborane

(3) Dialkyl diborane

(4) None of these

19. Among the following lanthanides, the smallest size is that of

(1) Cerium

(2) Dysprosium

(3) Thulium

(4) Ytterbium

20. The first actinide metal which resembles a lanthanide is

(1) Neptunium

(2) Americium

(3) Berkelium

(4) Uranium

21. The principal oxidation state of thorium is

(1) +4

(2) +3

(3) +2

(4) +5

22. Fe(CO)5 has a geometry which is

(1) octahedral

(2) Trigonal bipyramidal

(3) Square pyramidal

(4) None of these

23. Unsaturated hydrocarbons can be separated from alkanes by the complex formed between this metal and the unsaturated hydrocarbon.

(1) Pt

(2) Ag

(3) Au

(4) Zn

24. Which of the halide ions causes larger d orbital splitting?

(1) CI^–

(2) I^–

(3) Br ^–

(4) F^–

25. The infra-red absorption spectrum Fe₂ (CO)₉ indicates how many types of carbony1 groups in the cpmplex?

(1) 1

(2) 2

(3) 3

(4) Not clear

26. The temperature above which an antiferromagnetic complex shows paramagnetic behavior is called

(1) Curie temperature

(2) Neel temperature

(3) Critical temperature

(4) Theta temperature

27. When an alkene molecule complexes with a metal, tha alkene is susceptible to attack by

(1) Electrophiles

(2) Nucloeophiles

(3) Both (1) and (2)

(4) None of these

28. The condition that arises due to excessive intake of iron to toxic level is

(1) Hemochromatosis

(2) Transferrins

(3) Ovotransferrins

(4) Lactoferrin

29. The acid or base property of a substance is not inherent in the substance itself, is the limitation of

(1) Arrhenius concept

(2) Bronsted – Lowry concept

(3) Protonic concept

(4) Auto-ionisation concept

30. When acetic acid (CH₃COOH) is dissolved in liq. NH₃ (ammonia)

(1) It behaves as strong base

(2) It behaves as strong acid

(3) Neutralisation reaction take place

(4) liq. NH₃ (ammonia) behaves as an acid

31. When KNH₂ is mixed with liquor ammonia (NH₃) solution of silver nitrate (AgNO₃), the silver (Ag) precipitates as

(1) Nitrate salt

(2) Imide salt

(3) Solid metal

(4) Amide salt

32. The inorganic salts containing highly charged ions like oxides, hydroxides, sulphides are practically

(1) soluble in liq. SO2

(2) Soluble in liq. NH3

(3) Insoluble in liq. NH₃ and liq. SO₂

(4) Soluble in both liq. SO₂ and liq. NH₃

33. Non-ionising solvents have

(1) High dielectric constant and high dipole moment

(2) Low dipole moment and high dielectric constant

(3) Low dipole moment and low dielectric constant

(4) High polarity

34. At constant temperature, the volume of a fixed mass of a gas is inversely proportional to its pressure, is

(1) Charles’ law

(2) Einstein’s law

(3) Boyle’s law

(4) Pressure –Temperature law

35. The unit of ‘a’, the van der Waal’s constant is

(1) atm lit mol^-1

(2) atm lit^-1 mol^-1

(3) atm lit² mol^-1

(4) atm lit^-1 mol^-2

36. The gases which have their critical temperature above or just below the ordinary atmospheric temperature are liquefied by

(1) Linde’s method

(2) Faraday’s method

(3) Claude’s method

(4) Maxwell’s method

37. In simple cubic lattice of NaCl, each particle is surrounded by

(1) Eight other particles

(2) Four other particles

(3) Six other particles

(4) Ten other particles

38. The movement of sol particles under an applied electric field is called

(1) Electro filtration

(2) Electro-osmosis

(3) Electro kinetic phenomenon

(4) Electrophoresis

39. An emulsion is a colloidal solution of a

(1) Solid dispersed in liquid

(2) Liquid dispersed in another liquid

(3) Liquid dispersed in solid

(4) None of above

40. The function of alum used for purification of water is to

(1) Coagulate the colloidal particles

(2) Coagulate the sol particles

(3) Emulsify the sol particles

(4) Emulsify the colloidal particles

41. The solution which does not show Tyndall effect is

(1) Suspension

(2) Colloidal solution

(3) True solution

(4) Emulsion

42. The half-time of a first-order reaction is 90 days. Starting with a unit concentration of a reactant, after 360 days, the amount of reactant remaining is

(1) 1/16

(2) 1/8

(3) 1/4

(4) 1/2

43. In which of the following processes does the entropy decrease?

(1) Dissolution of NaCI in water

(2) Evaporation of water

(3) Conversion of CO₂ (g) into dry ice

(4) Spilling of food-grains on the ground

44. The gas which does not show Joule-Thomson effect is

(1) CO₂

(2) H₂

(3) N₂

(4) NH₃

45. In the phase diagram for water system, the number of curves representing monovariant system are

(1) One

(2) Two

(3) Three

(4) Four

46. The disturbance in the equilibrium of NO and NO₂ results into

(1) Acid rain

(2) Formation of smoke

(3) Green house effect

(4) Photochemical smog

47. The type of cancer that is not caused due to exposure to ultraviolet radiations is

(1) Carcinoma

(2) Squamous

(3) Leukemia

(4) Melanoma

48. The gas that does not cause house effect is

(1) CO₂

(2) CFC

(3) N₂O

(4) NO₂

49. The boiling point of which of the following compounds is unusually higher as compared to the other three?

(1) Ethanol

(2) Propane

(3) Dimethyl

(4) Ethyl Fluoride

50. On what basic will you distinguish between cis and trans alkenes using H-NMR spectroscopy?

(1) Coupling constants

(2) Splitting pattern

(3) Chemical shifts

(4) All of the above

51. From the pure rotation spectrum of HF molecule, information can be obtained about

(1) Force constant

(2) The internuclear distance

(3) Hydrogen bonding

(4) Bond strength

52. According to Huckel’s rule, the ring is said to be aromatic if it contains

(1) 4, 8, 12 etc. electrons

(2) 2, 6, 10, 14 etc.  Electrons

(3) 1, 3, 5, 7 etc. electrons

(4) 5, 8, 12 etc.  Electrons

53. In electrophilic substritution, reaction of aromatic rings, if an electrophile is a positive ion, it gives

(1) Carbocation

(2) Carboanion

(3) complexes

(4) None of the above

54. When glycols are treated with acids, t hey can be rearranged to give

(1) Acetic acid

(2) Alcohols

(3) Aldehydes or ketones

(4) Tetra-substituted glycols

55. when primary aromatic amines are treated with nitrous acid, it forms

(1) Diazonium salt

(2) Heterocyclic amines

(3) Nitro amines

(4) Amide