Created by fafc1e3eb63d3d1a8aeeb1233b58c927Kamran Fateh
BioChemistry 1

PPSC Analytical Chemist Final Quiz Batch 07

Today marks the Final Quiz for Batch 07 of the PPSC Analytical Chemist preparation session. Best of luck to all participants—give it your best and showcase the hard work you've put in throughout the session!

1 / 100

What is the correct IUPAC name of [Cr(en)₃]Cl₃?

2 / 100

A capillary column in GC typically has

3 / 100

Photochemical smog is also called:

4 / 100

Electrogravimetry involves

5 / 100

Le Chatelier's principle predicts that increasing the pressure of the system 2SO2(g)+O2(g)⇌2SO3(g)will:

6 / 100

What is the product of the Wolff-Kishner reduction of acetophenone?

7 / 100

What does a higher Rf value indicate in TLC

8 / 100

What does the peak current in cyclic voltammetry depend on

9 / 100

Which of the following reagents is used to convert an alkyne to a cis-alkene?

10 / 100

Which base is commonly used to deprotonate terminal alkynes?

11 / 100

The half-life of a radioactive isotope is 5 years. What fraction of the original sample will remain after 15 years?

12 / 100

Which of the following solutions will have the highest boiling point?

13 / 100

Total elememts in halogen family

14 / 100

Which of the following is an application of gravimetric analysis?

15 / 100

The number of orbitals in a given subshell is determined by

16 / 100

. Which factor decreases the lattice energy of an ionic compound?

17 / 100

In a two-dimensional paper chromatography setup, why is the paper rotated 90° before the second run

18 / 100

Which of the following is NOT a polar aprotic solvent?

19 / 100

The heat of fusion is the energy required for:

20 / 100

Why is primary carbocation formation avoided in Friedel–Crafts alkylation?

21 / 100

Which term is NOT a state function?

22 / 100

In a titration of calcium with EDTA, which buffer is commonly used

23 / 100

The term "BOD" stands for:

24 / 100

What is the primary basis of gravimetric analysis

25 / 100

The strength of a covalent bond is generally greater when

26 / 100

What is the major product of the E2 elimination of 2-bromo-2-methylbutane with NaOH?

27 / 100

Which of the following is NOT a commonly used IR light source in IR spectroscopy?

28 / 100

Which of the following statements about EDTA is incorrect?

29 / 100

. What is the effect of increasing the column temperature in GC

30 / 100

Chemisorption is usually:

31 / 100

The orthorhombic crystal system has

32 / 100

What happens when a nucleus absorbs the right amount of radio wave energy?

33 / 100

Which reagent is used to detect ammonium (NH₄⁺) ions?

34 / 100

Which of the following factors affects UV absorption?

35 / 100

Which of the following criteria is NOT necessary for a compound to be aromatic?

36 / 100

Which of following ligands make the most stable complexes among following

37 / 100

In an octahedral complex, Jahn-Teller distortion primarily affects which orbitals

38 / 100

The third law of thermodynamics states:

39 / 100

The decay of 238U to 206Pb involves the emission of how many alpha particles?

40 / 100

How many stereoisomers are possible for 1,2-dichlorocyclohexane?

41 / 100

Which of the following electrodes is commonly used as a reference electrode in voltammetry?

42 / 100

What is the formula for calculating the Rf value

43 / 100

Which of the following solvents would likely move a polar compound faster in paper chromatography

44 / 100

Gravimetric analysis is considered a fundamental method in classical analytical chemistry because of its

45 / 100

What is the relationship between cis-2-butene and trans-2-butene?

46 / 100

Commonly used detector in GC is

47 / 100

What is the purpose of drying or ignition in gravimetric analysis

48 / 100

Baeyer’s reagent is used to detect

49 / 100

In a bomb calorimeter, the heat transfer is measured under:

50 / 100

What does a McLafferty rearrangement involve?

51 / 100

If a compound does not move from the baseline in TLC, what could be the reason

52 / 100

D-Glucose and D-Galactose are:

53 / 100

Geometrical isomerism is exhibited by

54 / 100

The titration of Zn²⁺ with EDTA is best performed at what pH?

55 / 100

The process of allowing a precipitate to stand in solution before filtration is called

56 / 100

In potentiometric titrations, the equivalence point is determined by:

57 / 100

Denaturation of proteins disrupts:

58 / 100

In AAS, what does the monochromator do?

59 / 100

During electrolysis of molten NaCl, the product formed at the cathode is:

60 / 100

Find the compound with the highest boiling point among the following

61 / 100

Which of the following is the correct order of gravimetric analysis steps

62 / 100

The line spectrum of an element is

63 / 100

The purpose of a porous frit in a salt bridge is to:

64 / 100

Carboxylic acids can be reduced to primary alcohols using:

65 / 100

The order of a reaction can be determined by

66 / 100

What is the molecular geometry of SF₄ according to VSEPR theory

67 / 100

The half-life of a first-order reaction is 10 minutes. What is the rate constant (k) for the reaction?

68 / 100

In a titration curve, what does the steepest region indicate

69 / 100

Spectroscopy involves the interaction between matter and:

70 / 100

Which condition promotes large particle growth in precipitation

71 / 100

Which noble gas can form stable compounds by violating the octet rule

72 / 100

The Tyndall effect is observed in:

73 / 100

Which law states that "the solubility of a gas in a liquid is directly proportional to the pressure of the gas above the liquid

74 / 100

In which of the following scenarios is Gay-Lussac’s Law most applicable

75 / 100

Which of the following solvents is best for E1 reactions?

76 / 100

According to SHAB theory, which type of interactions are most stable

77 / 100

Why is a selective reagent used in precipitation

78 / 100

What is the characteristic flame color for potassium salts in a flame test?

79 / 100

What is the role of a "developing chamber" in paper chromatography

80 / 100

The protective layer of ozone is found in the:

81 / 100

In paper chromatography, what is the primary force that helps separate components

82 / 100

In a fuel cell, the reactants are

83 / 100

. If n=3, what are the possible values of l

84 / 100

A buffer solution contains

85 / 100

Ionic bonds are formed between

86 / 100

Only radioactive lanthanide elements is

87 / 100

What is the confirmatory test for calcium (Ca²⁺) ions?

88 / 100

The second ionization energy of sodium (Na) is extremely high because

89 / 100

Ozonolysis of benzene gives

90 / 100

What is the principal quantum number () for the first excited state of a hydrogen atom?

91 / 100

What is the base peak in a mass spectrum?

92 / 100

In a reaction where ΔG = 0, which of the following is true?

93 / 100

Which type of intermolecular force is present in all substances, regardless of their polarity

94 / 100

The salt bridge in a galvanic cell is used to:

95 / 100

Physical adsorption is characterized by:

96 / 100

What is the role of a Hollow Cathode Lamp (HCL) in AAS?

97 / 100

If peak tailing occurs in a GC chromatogram, what could be the possible reason?

98 / 100

Phenol is more acidic than alcohols due to:

99 / 100

What is the hybridization of sulfur in SF₆?

100 / 100

Which of the following is true about the SN2 mechanism?

Your score is

The average score is 78%

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