Objective Questions
All objective questions for CHM 102
Questions (1999)
| # | Question | Topic | Actions |
|---|---|---|---|
| 701 |
Why is acetylene (HC≡CH) more acidic than ethylene (H₂C=CH₂) or ethane (CH₃CH₃)?
|
Electronic Theory in Organic Chemistry | View |
| 702 |
What is the shape of methane (CH₄) according to VSEPR?
|
Electronic Theory in Organic Chemistry | View |
| 703 |
What is the shape of water (H₂O) according to VSEPR?
|
Electronic Theory in Organic Chemistry | View |
| 704 |
Which of the following is a sigma (σ) bond?
|
Electronic Theory in Organic Chemistry | View |
| 705 |
Which of the following is a pi (π) bond?
|
Electronic Theory in Organic Chemistry | View |
| 706 |
What is the geometry around a carbon in a carbonyl group (C=O)?
|
Electronic Theory in Organic Chemistry | View |
| 707 |
How many valence electrons does chlorine (atomic number 17) have?
|
Electronic Theory in Organic Chemistry | View |
| 708 |
What does a Lewis structure show?
|
Electronic Theory in Organic Chemistry | View |
| 709 |
What is the octet rule?
|
Electronic Theory in Organic Chemistry | View |
| 710 |
Which of the following about lone pairs is TRUE?
|
Electronic Theory in Organic Chemistry | View |
| 711 |
In resonance delocalization, which type of hybridization allows π electron delo…
|
Electronic Theory in Organic Chemistry | View |
| 712 |
What is the primary factor that determines the geometry of a molecule according…
|
Electronic Theory in Organic Chemistry | View |
| 713 |
What is the bond angle in a perfect tetrahedral geometry?
|
Electronic Theory in Organic Chemistry | View |
| 714 |
Why is the H-O-H bond angle in water (104.5°) less than the tetrahedral angle (…
|
Electronic Theory in Organic Chemistry | View |
| 715 |
What is the geometry of a carbon with three attached atoms and zero lone pairs?
|
Electronic Theory in Organic Chemistry | View |
| 716 |
What is the geometry of a carbon with two attached atoms and zero lone pairs?
|
Electronic Theory in Organic Chemistry | View |
| 717 |
Which hybrid orbitals are used by oxygen in water (H₂O)?
|
Electronic Theory in Organic Chemistry | View |
| 718 |
Which hybrid orbitals are used by nitrogen in ammonia (NH₃)?
|
Electronic Theory in Organic Chemistry | View |
| 719 |
What is the relationship between s-character and bond strength?
|
Electronic Theory in Organic Chemistry | View |
| 720 |
In VSEPR theory, how many electron domains are around the central atom in a tri…
|
Electronic Theory in Organic Chemistry | View |
| 721 |
In VSEPR theory, how many electron domains are around the central atom in an oc…
|
Electronic Theory in Organic Chemistry | View |
| 722 |
What type of bond is formed by the sideways overlap of parallel p orbitals?
|
Electronic Theory in Organic Chemistry | View |
| 723 |
What is the maximum number of electrons that can occupy a single orbital?
|
Electronic Theory in Organic Chemistry | View |
| 724 |
Which of the following molecules has a linear geometry?
|
Electronic Theory in Organic Chemistry | View |
| 725 |
Which of the following molecules has a trigonal planar geometry?
|
Electronic Theory in Organic Chemistry | View |
| 726 |
Why are alkanes less reactive than alkenes?
|
Electronic Theory in Organic Chemistry | View |
| 727 |
What is the significance of the unhybridized p orbital in sp² hybridized carbon?
|
Electronic Theory in Organic Chemistry | View |
| 728 |
What are the three rules for writing electron configurations (order of filling)?
|
Electronic Theory in Organic Chemistry | View |
| 729 |
What is the IUPAC name for CH₃COCH₃?
|
Nomenclature and Functional Group Classes of Organic Compounds | View |
| 730 |
What is the correct IUPAC name for the compound CH₃CH(NH₂)COOH?
|
Nomenclature and Functional Group Classes of Organic Compounds | View |
| 731 |
What is the correct IUPAC name for the compound (CH₃)₃C-OH?
|
Nomenclature and Functional Group Classes of Organic Compounds | View |
| 732 |
What is the correct name for the amide derived from propanoic acid and methylam…
|
Nomenclature and Functional Group Classes of Organic Compounds | View |
| 733 |
What is the common name for propanone?
|
Nomenclature and Functional Group Classes of Organic Compounds | View |
| 734 |
What is the functional group in a nitrile?
|
Nomenclature and Functional Group Classes of Organic Compounds | View |
| 735 |
Which of the following is an example of a secondary alcohol?
|
Nomenclature and Functional Group Classes of Organic Compounds | View |
| 736 |
Which of the following is an aldehyde?
|
Nomenclature and Functional Group Classes of Organic Compounds | View |
| 737 |
What is the correct name for the compound with a chlorine substituent on an eth…
|
Nomenclature and Functional Group Classes of Organic Compounds | View |
| 738 |
What is the correct IUPAC name for CH₃-CH=CH-CH₃?
|
Nomenclature and Functional Group Classes of Organic Compounds | View |
| 739 |
What is the correct IUPAC name for the compound (CH₃)₂CH-CH₂-CH₂-OH?
|
Nomenclature and Functional Group Classes of Organic Compounds | View |
| 740 |
What is the correct name for the compound with the formula CH₃-CH₂-CH₂-CHO?
|
Nomenclature and Functional Group Classes of Organic Compounds | View |
| 741 |
What is the prefix for an amide when it is not the highest priority group?
|
Nomenclature and Functional Group Classes of Organic Compounds | View |
| 742 |
What is the correct IUPAC name for the compound with the formula C₆H₅-CH₂-CH₂-O…
|
Nomenclature and Functional Group Classes of Organic Compounds | View |
| 743 |
What is the correct name for the compound with two methyl groups attached to th…
|
Nomenclature and Functional Group Classes of Organic Compounds | View |
| 744 |
What is the correct order of functional group priority (highest to lowest)?
|
Nomenclature and Functional Group Classes of Organic Compounds | View |
| 745 |
What is the IUPAC name for the compound CH₃-CH(OH)-CH₂-CHO?
|
Nomenclature and Functional Group Classes of Organic Compounds | View |
| 746 |
What is the correct name for the compound CH₃-C≡C-CH₃?
|
Nomenclature and Functional Group Classes of Organic Compounds | View |
| 747 |
What is the IUPAC name for methyl isopropyl ketone?
|
Nomenclature and Functional Group Classes of Organic Compounds | View |
| 748 |
What is the correct IUPAC name for the compound with structure Cl-CH₂-CH₂-OH?
|
Nomenclature and Functional Group Classes of Organic Compounds | View |
| 749 |
What is the correct IUPAC name for the compound CH₃-O-CH₂-CH₂-CH₃?
|
Nomenclature and Functional Group Classes of Organic Compounds | View |
| 750 |
What is the purpose of Lassaigne's test?
|
Qualitative and Quantitative Analysis in Organic Chemistry | View |
| 751 |
In Lassaigne's test, what is the purpose of fusing the organic compound with so…
|
Qualitative and Quantitative Analysis in Organic Chemistry | View |
| 752 |
What indicates the presence of nitrogen in Lassaigne's extract?
|
Qualitative and Quantitative Analysis in Organic Chemistry | View |
| 753 |
What is the chemical responsible for the Prussian blue color in the nitrogen te…
|
Qualitative and Quantitative Analysis in Organic Chemistry | View |
| 754 |
Which test for sulfur in Lassaigne's extract uses lead acetate and gives a blac…
|
Qualitative and Quantitative Analysis in Organic Chemistry | View |
| 755 |
What is the purple coloration test for sulfur in Lassaigne's extract?
|
Qualitative and Quantitative Analysis in Organic Chemistry | View |
| 756 |
In Lassaigne's test for halogens, what precipitate indicates the presence of ch…
|
Qualitative and Quantitative Analysis in Organic Chemistry | View |
| 757 |
In Lassaigne's test, what color precipitate indicates bromine?
|
Qualitative and Quantitative Analysis in Organic Chemistry | View |
| 758 |
In Lassaigne's test, what color precipitate indicates iodine?
|
Qualitative and Quantitative Analysis in Organic Chemistry | View |
| 759 |
What interference can occur if both nitrogen and sulfur are present in an organ…
|
Qualitative and Quantitative Analysis in Organic Chemistry | View |
| 760 |
Which test is used to detect the presence of an alcohol functional group using …
|
Qualitative and Quantitative Analysis in Organic Chemistry | View |
| 761 |
What is the positive result of Tollen's test for aldehydes?
|
Qualitative and Quantitative Analysis in Organic Chemistry | View |
| 762 |
What is the positive result of Fehling's test for aldehydes?
|
Qualitative and Quantitative Analysis in Organic Chemistry | View |
| 763 |
Which test gives a yellow precipitate of iodoform (CHI₃) with methyl ketones?
|
Qualitative and Quantitative Analysis in Organic Chemistry | View |
| 764 |
What does the 2,4-dinitrophenylhydrazine (2,4-DNPH) test detect?
|
Qualitative and Quantitative Analysis in Organic Chemistry | View |
| 765 |
Which test distinguishes carboxylic acids from other compounds by producing CO₂…
|
Qualitative and Quantitative Analysis in Organic Chemistry | View |
| 766 |
What is the carbylamine test used to detect?
|
Qualitative and Quantitative Analysis in Organic Chemistry | View |
| 767 |
What color complex does phenol form with ferric chloride?
|
Qualitative and Quantitative Analysis in Organic Chemistry | View |
| 768 |
What is the bromine water test used to detect?
|
Qualitative and Quantitative Analysis in Organic Chemistry | View |
| 769 |
What is Baeyer's test (cold KMnO₄) used for?
|
Qualitative and Quantitative Analysis in Organic Chemistry | View |
| 770 |
Who developed the combustion method for quantitative estimation of carbon and h…
|
Qualitative and Quantitative Analysis in Organic Chemistry | View |
| 771 |
In Liebig's combustion method, what absorbs the water produced?
|
Qualitative and Quantitative Analysis in Organic Chemistry | View |
| 772 |
In Liebig's combustion method, what absorbs the carbon dioxide produced?
|
Qualitative and Quantitative Analysis in Organic Chemistry | View |
| 773 |
What is the formula for calculating the percentage of carbon from Liebig's comb…
|
Qualitative and Quantitative Analysis in Organic Chemistry | View |
| 774 |
What is the Kjeldahl method used to estimate?
|
Qualitative and Quantitative Analysis in Organic Chemistry | View |
| 775 |
In the Dumas method, nitrogen is measured as which gas?
|
Qualitative and Quantitative Analysis in Organic Chemistry | View |
| 776 |
What is the advantage of the Dumas method over the Kjeldahl method?
|
Qualitative and Quantitative Analysis in Organic Chemistry | View |
| 777 |
In the Carius method for halogen estimation, what precipitates the halide?
|
Qualitative and Quantitative Analysis in Organic Chemistry | View |
| 778 |
In the Carius method for sulfur estimation, sulfur is precipitated as which com…
|
Qualitative and Quantitative Analysis in Organic Chemistry | View |
| 779 |
What is the molar mass of barium sulfate (BaSO₄) used in sulfur calculations?
|
Qualitative and Quantitative Analysis in Organic Chemistry | View |
| 780 |
In the estimation of phosphorus by the magnesium pyrophosphate method, what is …
|
Qualitative and Quantitative Analysis in Organic Chemistry | View |
| 781 |
What is the molar mass of magnesium pyrophosphate (Mg₂P₂O₇) used in phosphorus …
|
Qualitative and Quantitative Analysis in Organic Chemistry | View |
| 782 |
What does the empirical formula of a compound represent?
|
Qualitative and Quantitative Analysis in Organic Chemistry | View |
| 783 |
If a compound has an empirical formula CH₂O and a molar mass of 180 g/mol, what…
|
Qualitative and Quantitative Analysis in Organic Chemistry | View |
| 784 |
What does infrared (IR) spectroscopy primarily detect?
|
Qualitative and Quantitative Analysis in Organic Chemistry | View |
| 785 |
What is the approximate IR absorption range for a carbonyl (C=O) group?
|
Qualitative and Quantitative Analysis in Organic Chemistry | View |
| 786 |
What does ¹H NMR spectroscopy provide information about?
|
Qualitative and Quantitative Analysis in Organic Chemistry | View |
| 787 |
In ¹H NMR, what does the integration (area under a peak) indicate?
|
Qualitative and Quantitative Analysis in Organic Chemistry | View |
| 788 |
In ¹H NMR, what does the n+1 rule describe?
|
Qualitative and Quantitative Analysis in Organic Chemistry | View |
| 789 |
What does the base peak in a mass spectrum represent?
|
Qualitative and Quantitative Analysis in Organic Chemistry | View |
| 790 |
What does the molecular ion peak (M⁺) in a mass spectrum indicate?
|
Qualitative and Quantitative Analysis in Organic Chemistry | View |
| 791 |
In mass spectrometry, what is indicated by an M+2 peak intensity approximately …
|
Qualitative and Quantitative Analysis in Organic Chemistry | View |
| 792 |
In mass spectrometry, what is indicated by equal M and M+2 peaks (1:1 ratio)?
|
Qualitative and Quantitative Analysis in Organic Chemistry | View |
| 793 |
What does UV-Vis spectroscopy detect?
|
Qualitative and Quantitative Analysis in Organic Chemistry | View |
| 794 |
In UV-Vis spectroscopy, what happens to λmax as conjugation increases?
|
Qualitative and Quantitative Analysis in Organic Chemistry | View |
| 795 |
What does TLC (Thin Layer Chromatography) measure?
|
Qualitative and Quantitative Analysis in Organic Chemistry | View |
| 796 |
What is the formula for calculating Rf in chromatography?
|
Qualitative and Quantitative Analysis in Organic Chemistry | View |
| 797 |
Which chromatographic technique is best for separating volatile organic compoun…
|
Qualitative and Quantitative Analysis in Organic Chemistry | View |
| 798 |
Which chromatographic technique is best for polar or thermally unstable compoun…
|
Qualitative and Quantitative Analysis in Organic Chemistry | View |
| 799 |
What is the systematic approach order for structural determination?
|
Qualitative and Quantitative Analysis in Organic Chemistry | View |
| 800 |
What is the main limitation of the Kjeldahl method for nitrogen estimation?
|
Qualitative and Quantitative Analysis in Organic Chemistry | View |