WorksheetsG10-Chem-CH-11
Total questions: 155
Worksheet time: 5hrs 10mins
Name
Class
Date
1.
Cm-11.1 What was the meaning of organic chemistry initially?
a)
a) The chemistry of inorganic compounds
b)
b) The chemistry of compounds obtained from living organisms
c)
c) The chemistry of non-living organisms
d)
d) The chemistry of minerals
2.
Cm-11.2 What was the Vital Force Theory proposed by Jacob Berzellius?
a)
a) Organic compounds could be prepared in laboratories
b)
b) Organic compounds could not be prepared in laboratories because of the influence of a mysterious force
c)
c) Organic compounds are only found in animals
d)
d) Organic compounds are only found in plants
3.
Cm-11.3 Who synthesized the first organic compound urea from an inorganic substance?
a)
a) Lavoisier
b)
b) Jacob Berzellius
c)
c) Wohler
d)
d) Kolbe
4.
Cm-11.4 What did Kolbe do to further negate the Vital Force Theory?
a)
a) Synthesized the first organic compound urea from an inorganic substance
b)
b) Prepared acetic acid in the laboratory
c)
c) Discovered hydrocarbons
d)
d) Proposed the concept of molecular formula
5.
Cm-11.5 What are examples of organic compounds?
a)
a) Water and salt
b)
b) Carbon dioxide and oxygen
c)
c) Carbohydrates, proteins, and lipids
d)
d) Sodium and potassium
6.
Cm-11.6 How many organic compounds are estimated to exist?
a)
a) About one hundred
b)
b) About one thousand
c)
c) About one million
d)
d) About ten million
7.
Cm-11.7 What is the molecular formula for butane?
a)
a) C3H6
b)
b) C4H8
c)
c) C4H10
d)
d) C5H10
8.
Cm-11.8 What does the structural formula of a compound represent?
a)
a) The actual number of atoms in one molecule
b)
b) The exact arrangement of the different atoms of various elements present in a molecule
c)
c) The group of atoms joined together to each carbon atom in a straight chain or a branched chain
d)
d) The sharing of electrons between various atoms in one molecule
9.
Cm-11.9 How is a single bond represented in a structural formula?
a)
a) A single line (-)
b)
b) Two lines (=)
c)
c) Three lines ( )
d)
d) A dotted line (:)
10.
Cm-11.10 What is the condensed formula?
a)
a) The formula which represents the actual number of atoms in one molecule
b)
b) The exact arrangement of the different atoms of various elements present in a molecule
c)
c) The group of atoms joined together to each carbon atom in a straight chain or a branched chain
d)
d) The formula which shows the sharing of electrons between various atoms in one molecule
11.
Cm-11.11 What is the dot and cross formula also known as?
a)
a) Molecular formula
b)
b) Structural formula
c)
c) Condensed formula
d)
d) Electronic formula
12.
Cm-11.12 How are organic compounds classified based on their carbon skeleton?
a)
A) into two categories: aliphatic and aromatic compounds
b)
B) into two categories: open chain and closed chain compounds
c)
C) into three categories: aliphatic, aromatic, and heterocyclic compounds
d)
D) into four categories: straight chain, branched chain, cyclic, and heterocyclic compounds
13.
Cm-11.13 What are open chain compounds also known as?
a)
A) aldehydes
b)
B) alkanes
c)
C) alcohols
d)
D) aliphatic compounds
14.
Cm-11.14 Which of the following is an example of a straight chain compound?
a)
A) propane
b)
B) isobutane
c)
C) cyclohexane
d)
D) benzene
15.
Cm-11.15 Which of the following is an example of a branched chain compound?
a)
A) ethane
b)
B) butene
c)
C) isobutane
d)
D) ethyne
16.
Cm-11.16 What are closed chain compounds also known as?
a)
A) aldehydes
b)
B) alkanes
c)
C) alcohols
d)
D) cyclic compounds
17.
Cm-11.17 Which of the following is an example of a homocyclic or carbocyclic compound?
a)
A) benzene
b)
B) cyclohexane
c)
C) pyridine
d)
D) all of the above
18.
Cm-11.18 What is a benzene ring made up of?
a)
A) six carbon atoms with alternating single and double bonds
b)
B) six carbon atoms with alternating double and triple bonds
c)
C) six carbon atoms with three alternating double bonds
d)
D) six carbon atoms with four alternating single and double bonds
19.
Cm-11.19 Why are aromatic compounds so named?
a)
A) because they are volatile
b)
B) because they are colorless
c)
C) because they have a characteristic aroma or smell
d)
D) because they are insoluble in water
20.
Cm-11.20 Which of the following is an example of an alicyclic or non-benzenoid compound?
a)
A) cyclohexane
b)
B) benzene
c)
C) toluene
d)
D) naphthalene
21.
Cm-11.21 Which of the following is not a heterocyclic compound?
a)
A) pyridine
b)
B) furan
c)
C) thiophene
d)
D) benzene
22.
Cm-11.22 What are heterocyclic compounds?
a)
A) cyclic compounds that contain at least one benzene ring
b)
B) cyclic compounds that contain one or more atoms other than carbon in their rings
c)
C) open chain compounds that contain at least one oxygen atom
d)
D) open chain compounds that contain one or more halogen atoms
23.
Cm-11.23 What is the difference between aromatic and alicyclic compounds?
a)
A) aromatic compounds contain a benzene ring while alicyclic compounds do not
b)
B) alicyclic compounds contain a benzene ring while aromatic compounds do not
c)
C) aromatic compounds contain a double bond while alicyclic compounds do not
d)
D) alicyclic compounds contain a triple bond while aromatic compounds do not
24.
Cm-11.24 Which of the following is not an example of a heterocyclic compound?
a)
A) pyrrole
b)
B) pyridine
c)
C) pyrimidine
d)
D) propane
25.
Cm-11.25 Which of the following is a heterocyclic compound that contains nitrogen in its ring?
a)
A) pyridine
b)
B) thiophene
c)
C) furan
d)
D) benzene
26.
Cm-11.26 Which of the following is not a naturally occurring organic compound?
a)
a) Proteins
b)
b) Fats
c)
c) Carbohydrates
d)
d) Minerals
27.
Cm-11.27 What are the main organic compounds synthesized by animals?
a)
a) Carbohydrates and proteins
b)
b) Fats and carbohydrates
c)
c) Proteins and fats
d)
d) Proteins and vitamins
28.
Cm-11.28 Which of the following is not a source of organic compounds?
a)
a) Coal
b)
b) Petroleum
c)
c) Gas
d)
d) Copper
29.
Cm-11.29 What is the process called that converts wood into coal?
a)
a) Carbonation
b)
b) Fermentation
c)
c) Carbonization
d)
d) Oxidation
30.
Cm-11.30 How long does the carbonization process take?
a)
a) About 500 years
b)
b) About 5,000 years
c)
c) About 50,000 years
d)
d) About 500 million years
31.
Cm-11.31 Which type of coal is the inferior quality coal used in kilns?
a)
a) Peat
b)
b) Lignite
c)
c) Bituminous
d)
d) Anthracite
32.
Cm-11.32 Which type of coal is used in thermal power stations?
a)
a) Peat
b)
b) Lignite
c)
c) Bituminous
d)
d) Anthracite
33.
Cm-11.33 Which type of coal is the common variety of coal used as household coal?
a)
a) Peat
b)
b) Lignite
c)
c) Bituminous
d)
d) Anthracite
34.
Cm-11.34 Which type of coal is the superior quality hard coal that is used in industry?
a)
a) Peat
b)
b) Lignite
c)
c) Bituminous
d)
d) Anthracite
35.
Cm-11.35 What is the process called that provides a large number of organic compounds by strong heating of coal in the absence of air?
a)
a) Carbonization
b)
b) Fractional distillation
c)
c) Destructive distillation
d)
d) Combustion
36.
Cm-11.36 What is the main use of coal gas?
a)
a) To produce ammonia gas
b)
b) To provide an inert or reducing atmosphere in various metallurgical processes
c)
c) To synthesize drugs, dyes, explosives, paints, varnishes, plastics, synthetic fibre and pesticides
d)
d) As a fuel in industry
37.
Cm-11.37 What is ammonical liquor used for?
a)
a) To prepare nitrogenous fertilizers
b)
b) To produce coal gas
c)
c) To separate aromatic compounds from coal tar
d)
d) To extract metals especially iron
38.
Cm-11.38 What is coal tar mainly composed of?
a)
a) More than 200 different inorganic compounds
b)
b) More than 200 different organic compounds, mostly aromatic
c)
c) More than 200 different proteins
d)
d) More than 200 different carbohydrates
39.
Cm-11.39 What is coke mainly used for?
a)
a) To produce coal gas
b)
b) To prepare nitrogenous fertilizers
c)
c) To extract metals especially iron
d)
d) To synthesize drugs, dyes, explosives, paints, varnishes, plastics, synthetic fibre and pesticides
40.
Cm-11.40 What are the gases found in coal gas?
a)
a) Oxygen and nitrogen
b)
b) Hydrogen, methane, and carbon monoxide
c)
c) Carbon dioxide and sulphur dioxide
d)
d) Helium and neon
41.
Cm-11.41 What is the importance of coal tar?
a)
a) It is used as fuel in industry
b)
b) It is used to make fertilizers
c)
c) It contains valuable organic compounds used to synthesize drugs, dyes, explosives, and more
d)
d) It is used to make plastics
42.
Cm-11.42 What is coke?
a)
a) A type of coal used in household heating
b)
b) A byproduct of destructive distillation of coal
c)
c) A type of coal used in thermal power stations
d)
d) A type of coal used in industry
43.
Cm-11.43 For what purpose is coke used?
a)
a) As a reducing agent in the extraction of metals, especially iron
b)
b) As fuel in industry
c)
c) To make fertilizers
d)
d) As a raw material to make plastics
44.
Cm-11.44 Which is the best quality of coal?
a)
a) Peat
b)
b) Lignite
c)
c) Bituminous
d)
d) Anthracite
45.
Cm-11.45 What is destructive distillation?
a)
a) The process of heating coal in the presence of air
b)
b) The process of heating coal in the presence of water
c)
c) The process of heating coal in the absence of air
d)
d) The process of cooling coal rapidly
46.
Cm-11.46 What are the main organic compounds synthesized by animals?
a)
a) Carbohydrates and proteins
b)
b) Proteins and fats
c)
c) Carbohydrates and fats
d)
d) Vitamins and fats
47.
Cm-11.47 What organic compound is found in milk and butter?
a)
a) Carbohydrates
b)
b) Proteins
c)
c) Fats
d)
d) Vitamins
48.
Cm-11.48 What organic compounds are synthesized by plants?
a)
a) Proteins and fats
b)
b) Carbohydrates and proteins
c)
c) Carbohydrates, proteins, fats, and vitamins
d)
d) Vitamins and fats
49.
Cm-11.49 What is coal?
a)
a) A mineral
b)
b) A complex mixture of carbon, hydrogen, and oxygen compounds
c)
c) A type of rock
d)
d) A type of oil
50.
Cm-11.50 What is the process called by which coal is formed?
a)
a) Carbonization
b)
b) Combustion
c)
c) Oxidation
d)
d) Redox
51.
Cm-11.51 How many types of coal are there, according to Table 11.2?
a)
a) 2
b)
b) 3
c)
c) 4
d)
d) 5
52.
Cm-11.52 What is lignite?
a)
a) A type of coal used in household heating
b)
b) A type of coal used in thermal power stations
c)
c) A type of coal used in industry
d)
d) A type of coal used in kilns
53.
Cm-11.53 Petroleum is a complex mixture of several _____________ in water mixed with salts and earth particles.
a)
a) gases
b)
b) liquids
c)
c) solids
d)
d) all of the above
54.
Cm-11.54 What is the main component of natural gas?
a)
a) ethane
b)
b) propane
c)
c) butane
d)
d) methane
55.
Cm-11.55 What is the origin of natural gas?
a)
a) It is synthesized in laboratories.
b)
b) It is found in plants.
c)
c) It is found with coal and petroleum deposits.
d)
d) None of the above.
56.
Cm-11.56 What is the use of natural gas in automobiles?
a)
a) As fuel in the form of compressed natural gas (CNG)
b)
b) As lubricant
c)
c) As coolant
d)
d) As brake fluid
57.
Cm-11.57 Which of the following is not a major food item synthesized by plants?
a)
a) Carbohydrates
b)
b) Proteins
c)
c) Oils
d)
d) Carbon black
58.
Cm-11.58 Which organic compound was first synthesized in the laboratory?
a)
a) Urea
b)
b) Glucose
c)
c) Cellulose
d)
d) Sucrose
59.
Cm-11.59 How many organic compounds have been prepared in the laboratories up to now?
a)
a) Less than one million
b)
b) More than one million
c)
c) Less than ten million
d)
d) More than ten million
60.
Cm-11.60 Which of the following is not made up of organic compounds?
a)
a) Milk
b)
b) Cotton
c)
c) Nylon
d)
d) All of the above are made up of organic compounds
61.
Cm-11.61 What is the general formula of alkanes?
a)
a) CnHn
b)
b) CnH2n-1
c)
c) CnH2n+2
d)
d) CnH2n+1
62.
Cm-11.62 What is a homologous series?
a)
a) A group of compounds having different chemical properties
b)
b) A group of compounds having similar chemical properties
c)
c) A group of compounds having both similar and different chemical properties
d)
d) A group of compounds having no chemical properties
63.
Cm-11.63 Which of the following is not a property of organic compounds of the same homologous series?
a)
a) Similar chemical properties
b)
b) Same general formula
c)
c) Same physical properties
d)
d) Similar structure
64.
Cm-11.64 What are fossil fuels?
a)
a) Fuels synthesized in laboratories
b)
b) Fuels found in plants
c)
c) Fuels found in animals
d)
d) Fuels found with coal, petroleum, and natural gas deposits
65.
Cm-11.65 Which homologous series forms the most important series of compounds?
a)
a) Alcohols
b)
b) Aldehydes
c)
c) Alkanes
d)
d) Carboxylic acids
66.
Cm-11.66 What are the fuels we use for automobiles and domestic purposes called?
a)
a) Fossil fuels
b)
b) Synthetic fuels
c)
c) Natural fuels
d)
d) Inorganic fuels
67.
Cm-11.67 Which of the following is not a fossil fuel?
a)
a) Coal
b)
b) Petroleum
c)
c) Natural gas
d)
d) Ethanol
68.
Cm-11.68 What is the general formula of alkanes?
a)
a) CnH2n-2
b)
b) CnH2n
c)
c) CnH2n+2
d)
d) CnHn
69.
Cm-11.69 What is the functional group of alcohols?
a)
a) -OH
b)
b) -COOH
c)
c) -CHO
d)
d) -NH2
70.
Cm-11.70 Which homologous series contains compounds with the functional group -COOH?
a)
a) Alkenes
b)
b) Alkynes
c)
c) Alkanes
d)
d) Carboxylic acids
71.
Cm-11.71 What is the general formula of ethers?
a)
a) R-O-R'
b)
b) RCHO
c)
c) RCOOH
d)
d) ROH
72.
Cm-11.72 Which of the following is a derivative of alkanes?
a)
a) Alkenes
b)
b) Alkyl radicals
c)
c) Alkynes
d)
d) Aromatic compounds
73.
Cm-11.73 What is the functional group of carboxylic acids?
a)
a) -OH
b)
b) -COOH
c)
c) -CHO
d)
d) -NH2
74.
Cm-11.74 What is the name of the alkyl radical formed by removing a hydrogen atom from the central carbon of propane?
a)
a) Isopropyl
b)
b) Propyl
c)
c) Ethyl
d)
d) Butyl
75.
Cm-11.75 Which functional group is present in ketones?
a)
a) -COOH
b)
b) -CHO
c)
c) -NH2
d)
d) -C=O
76.
Cm-11.76 Which homologous series contains compounds with the functional group -NH2?
a)
a) Alkanes
b)
b) Alkenes
c)
c) Amines
d)
d) Aldehydes
77.
Cm-11.77 What is the general formula of carboxylic acids?
a)
a) R-CO-R'
b)
b) R-COOH
c)
c) R-O-R'
d)
d) RCHO
78.
Cm-11.78 What is the functional group of ethers?
a)
a) -OH
b)
b) -COOH
c)
c) C-O-C
d)
d) -C=O
79.
Cm-11.79 Which of the following is a fossil fuel?
a)
a) Alkenes
b)
b) Alkynes
c)
c) Alkanes
d)
d) Aromatic compounds
80.
Cm-11.80 What is the general formula of aldehydes?
a)
a) RCHO
b)
b) RCOOH
c)
c) ROH
d)
d) R-O-R'
81.
Cm-11.81 What is the functional group of carboxylic acids?
a)
a) -OH
b)
b) -COOH
c)
c) -CHO
d)
d) -NH2
82.
Cm-11.82 Which homologous series contains compounds with the general formula CnH2n+2?
a)
a) Alkenes
b)
b) Alkynes
c)
c) Alkanes
d)
d) Aromatics
83.
Cm-11.83 What are the organic compounds that have a functional group containing carbon, hydrogen, and halogens called?
a)
a) Hydrocarbons
b)
b) Alkenes
c)
c) Alkynes
d)
d) Alkyl halides
84.
Cm-11.84 What is the functional group in alkyl halides?
a)
a) R-OH
b)
b) R-CHO
c)
c) R-X
d)
d) R-NH2
85.
Cm-11.85 Which of the following is not a halogen?
a)
a) Fluorine (F)
b)
b) Chlorine (Cl)
c)
c) Bromine (Br)
d)
d) Sulfur (S)
86.
Cm-11.86 What is the name of hydrocarbons consisting of double bonds between two carbon atoms in their molecules?
a)
a) Alkanes
b)
b) Alkenes
c)
c) Alkynes
d)
d) Alkyl halides
87.
Cm-11.87 What is the name of hydrocarbons consisting of triple bonds between two carbon atoms in their molecules?
a)
a) Alkanes
b)
b) Alkenes
c)
c) Alkynes
d)
d) Alkyl halides
88.
Cm-11.88 What is the test for unsaturation?
a)
a) Sodium metal test
b)
b) Ester formation test
c)
c) Bromine water test
d)
d) Litmus test
89.
Cm-11.89 What happens in the Bromine water test?
a)
a) Bromine water turns red
b)
b) Bromine water turns blue
c)
c) Bromine water evaporates
d)
d) Bromine water is decolourised
90.
Cm-11.90 What is the name of the test for alcoholic group?
a)
a) Bromine water test
b)
b) Sodium metal test
c)
c) Ester formation test
d)
d) Litmus test
91.
Cm-11.91 What happens in the Sodium metal test?
a)
a) A fruity smell is given out
b)
b) CO2 gas with effervescence evolves
c)
c) Hydrogen gas evolves
d)
d) Litmus solution turns red
92.
Cm-11.92 What is the name of the test for carboxyl group?
a)
a) Sodium metal test
b)
b) Litmus test
c)
c) Bromine water test
d)
d) Ester formation test
93.
Cm-11.93 What happens in the litmus test?
a)
a) Litmus solution turns red
b)
b) Litmus solution turns blue
c)
c) A fruity smell is given out
d)
d) CO2 gas with effervescence evolves
94.
Cm-11.94 What is the name of the functional group in aldehydes?
a)
a) R-OH
b)
b) R-CHO
c)
c) R-X
d)
d) R-NH2
95.
Cm-11.95 What is the name of the test for detection of aldehydic group?
a)
a) Sodium bisulphite test
b)
b) Fehling’s solution test
c)
c) Phenyl hydrazine test
d)
d) Sodium nitroprusside test
96.
Cm-11.96 What happens in the Sodium bisulphite test?
a)
a) A crystalline white precipitate is formed
b)
b) Red precipitate is formed
c)
c) Orange-red precipitate is formed
d)
d) Hydrogen gas evolves
97.
Cm-11.97 What is coalification?
a)
A) Conversion of wood into coal
b)
B) The process of making coal from oil
c)
C) The process of making oil from coal
d)
D) The process of making coal from natural gas
98.
Cm-11.98 How long does carbonization process take place?
a)
A) 50 years
b)
B) 500 years
c)
C) 5 million years
d)
D) 500 million years
99.
Cm-11.99 Which type of coal has the highest carbon content?
a)
A) Peat
b)
B) Lignite
c)
C) Bituminous
d)
D) Anthracite
100.
Cm-11.100 What is the process of strong heating of coal in the absence of air called?
a)
A) Carbonization
b)
B) Coalification
c)
C) Destructive distillation
d)
D) Fractional distillation
101.
Cm-11.101 What is coal gas mainly used for in industry?
a)
A) Synthesizing drugs
b)
B) Providing an inert atmosphere
c)
C) Fuel
d)
D) Nitrogenous fertilizers
102.
Cm-11.102 What is ammonical liquor used for?
a)
A) Producing coal tar
b)
B) Preparing nitrogenous fertilizers
c)
C) Reducing agents
d)
D) Extraction of metals
103.
Cm-11.103 What is coal tar?
a)
A) A solid residue left behind after carbonization of wood
b)
B) A mixture of hydrogen, methane and carbon monoxide
c)
C) A thick black liquid consisting of more than 200 different organic compounds
d)
D) A 98% carbon residue left behind after destructive distillation of coal
104.
Cm-11.104 What is coke used for?
a)
A) Synthesizing drugs
b)
B) Providing an inert atmosphere
c)
C) Fuel
d)
D) Reducing agent in the extraction of metals
105.
Cm-11.105 Which type of coal is used in thermal power stations?
a)
A) Peat
b)
B) Lignite
c)
C) Bituminous
d)
D) Anthracite
106.
Cm-11.106 What is pitch obtained from coal tar used for?
a)
A) Synthesizing drugs
b)
B) Surfacing of roads and roofs
c)
C) Providing an inert atmosphere
d)
D) Fuel
107.
Cm-11.107 What is catenation?
a)
A. A process of forming chains of atoms in a compound
b)
B. A process of breaking down chains of atoms in a compound
c)
C. A process of combining different compounds to form a new compound
d)
D. A process of separating compounds into their constituent elements
108.
Cm-11.108 How is coal formed?
a)
A. By the decomposition of dead animals
b)
B. By the decomposition of dead plants
c)
C. By volcanic activity
d)
D. By sedimentation of rocks
109.
Cm-11.109 What is the importance of natural gas?
a)
A. It is used as fuel
b)
B. It is used in the manufacture of fertilizers
c)
C. It is used in the production of plastics
d)
D. All of the above
110.
Cm-11.110 Justify that organic compounds are used as food.
a)
A. Organic compounds contain essential nutrients required for growth and maintenance of the body
b)
B. Organic compounds are readily available in nature
c)
C. Organic compounds are cheaper than inorganic compounds
d)
D. Organic compounds taste better than inorganic compounds
111.
Cm-11.111 How are alkyl radicals formed? Explain with examples.
a)
A. Alkyl radicals are formed by the loss of a hydrogen atom from an alkane molecule
b)
B. Alkyl radicals are formed by the addition of a hydrogen atom to an alkane molecule
c)
C. Alkyl radicals are formed by the loss of a carbon atom from an alkane molecule
d)
D. Alkyl radicals are formed by the addition of a carbon atom to an alkane molecule
112.
Cm-11.112 What is the difference between n-propyl and isopropyl radicals? Explain with structure.
a)
A. n-propyl has a linear structure, while isopropyl has a branched structure
b)
B. n-propyl has a branched structure, while isopropyl has a linear structure
c)
C. n-propyl has three carbon atoms, while isopropyl has four carbon atoms
d)
D. n-propyl has four carbon atoms, while isopropyl has three carbon atoms
113.
Cm-11.113 Explain different radicals of butane.
a)
A. Butane has two types of radicals, n-butyl and isobutyl
b)
B. Butane has three types of radicals, n-butyl, sec-butyl, and tert-butyl
c)
C. Butane has four types of radicals, n-butyl, iso-butyl, neo-butyl, and tert-butyl
d)
D. Butane has five types of radicals, n-butyl, sec-butyl, tert-butyl, isopropyl, and methylpropyl
114.
Cm-11.114 What is an ester group? Write down the formula of ethyl acetate.
a)
A) A group of atoms that contains a carbonyl and an ether linkage
b)
B) A group of atoms that contains a carbonyl and a hydroxyl linkage
c)
C) A group of atoms that contains a carbonyl and an alkene linkage
d)
D) A group of atoms that contains a carbonyl and an ester linkage
115.
Cm-11.115 Write down the dot and cross formulae of propane and n-butane?
a)
A) Propane: CH4; n-Butane: C4H10
b)
B) Propane: C3H8; n-Butane: C4H8
c)
C) Propane: C3H6; n-Butane: C4H10
d)
D) Propane: C3H8; n-Butane: C4H10
116.
Cm-11.116 Define structural formula. Draw the structural formulae of n-butane and isobutane.
a)
A) A molecular formula that shows the arrangement of atoms in a molecule
b)
B) A molecular formula that shows the number of atoms in a molecule
c)
C) A molecular formula that shows the functional groups in a molecule
d)
D) A molecular formula that shows the isomers of a molecule
117.
Cm-11.117 Write classification of coal.
a)
A) Anthracite, Bituminous, Lignite, Peat
b)
B) Anthracite, Graphite, Lignite, Bituminous
c)
C) Anthracite, Coke, Lignite, Bituminous
d)
D) Anthracite, Charcoal, Lignite, Bituminous
118.
Cm-11.118 What are heterocyclic compounds? Give two examples.
a)
A) Compounds that contain only carbon and hydrogen atoms
b)
B) Compounds that contain at least one heteroatom in the ring
c)
C) Compounds that contain two or more rings in their structure
d)
D) Compounds that contain a functional group in their structure
119.
Cm-11.119 Why are benzene and other homologous compounds of benzene called aromatic compounds?
a)
A) Because they have a sweet aroma
b)
B) Because they contain an alternating double bond system
c)
C) Because they are used in aromatherapy
d)
D) Because they contain a cyclic alkene group
120.
Cm-11.120 Which of the following is true for n-propyl and isopropyl radicals?
a)
A) Both have the same molecular formula
b)
B) n-Propyl has a linear structure while isopropyl has a branched structure
c)
C) Both have a branched structure
d)
D) Both have a cyclic structure
121.
Cm-11.121 Which of the following is the correct structure of n-propyl radical?
a)
A) CH3-CH2-CH2
b)
B) CH3-CH2-CH
c)
C) CH3-CH2-CH2-
d)
D) CH3-CH2-CH2•
122.
Cm-11.122 Which of the following is the correct structure of isopropyl radical?
a)
A) CH3-CH2
b)
B) CH3-CH2-CH
c)
C) CH3-CH
d)
D) CH3-CH2-CH3
123.
Cm-11.123 Which of the following statements is true for n-propyl and isopropyl radicals?
a)
A) Both have the same structure
b)
B) Both are cyclic structures
c)
C) Both have the same functional group
d)
D) Both are important in organic chemistry
124.
Cm-11.124 Which of the following compounds contains isopropyl radical?
a)
A) Propanoic acid
b)
B) 2-propanol
c)
C) Ethyl acetate
d)
D) Methanol
125.
Cm-11.125 How many possible radicals are there for butane?
a)
A) 2
b)
B) 3
c)
C) 4
d)
D) 5
126.
Cm-11.126 Which of the following is a possible radical of butane?
a)
A) CH3-CH2-CH2
b)
B) CH3-CH2-CH2-CH3
c)
C) CH3-CH2-CH2-CH2
d)
D) CH3-CH2-CH2-CH2•
127.
Cm-11.127 Which of the following is a secondary radical of butane?
a)
A) CH3-CH2-CH2-CH2•
b)
B) CH3-CH2-CH•-CH3
c)
C) CH3-CH•-CH2-CH3
d)
D) CH3-CH2-CH3
128.
Cm-11.128 Which of the following is a tertiary radical of butane?
a)
A) CH3-CH2-CH2-CH3
b)
B) CH3-CH2-CH•-CH3
c)
C) CH3-CH•-CH2-CH3
d)
D) CH3-CH2-CH2•-CH3
129.
Cm-11.129 Which of the following is an example of a butane radical with a double bond?
a)
A) CH3-CH=CH-CH3
b)
B) CH3-CH2-CH=CH2
c)
C) CH3-CH2-CH2-CH2
d)
D) CH3-CH=CH•-CH3
130.
Cm-11.130 Which of the following is the correct definition of a functional group?
a)
A) A group of atoms responsible for the physical and chemical properties of a molecule
b)
B) A group of molecules responsible for the physical and chemical properties of an atom
c)
C) A group of atoms responsible for the physical and chemical properties of an element
d)
D) A group of elements responsible for the physical and chemical properties of a compound
131.
Cm-11.131 Which of the following elements is known for its strong catenation property?
a)
a) Carbon
b)
b) Nitrogen
c)
c) Oxygen
d)
d) Fluorine
132.
Cm-11.132 Which of the following compounds displays catenation?
a)
a) Methane
b)
b) Water
c)
c) Hydrogen chloride
d)
d) Ammonia
133.
Cm-11.133 Which of the following is an ester group?
a)
a) C-OH
b)
b) C=O
c)
c) C-O-C
d)
d) C-NH2
134.
Cm-11.134 Which of the following is the correct structural formula for n-butane?
a)
a) CH3-CH2-CH2-CH2
b)
b) CH3-CH(CH3)-CH2-CH3
c)
c) CH3-CH(CH3)-CH(CH3)-CH3
d)
d) CH3-CH(CH2CH3)-CH3
135.
Cm-11.135 Which of the following is the correct structural formula for isobutane?
a)
a) CH3-CH2-CH2-CH3
b)
b) CH3-CH(CH3)-CH2-CH3
c)
c) CH3-CH(CH3)-CH(CH3)-CH3
d)
d) CH3-CH(CH2CH3)-CH3
136.
Cm-11.136 Which of the following products is not obtained by the destructive distillation of coal?
a)
a) Coal gas
b)
b) Coal tar
c)
c) Coke
d)
d) Coal oil
137.
Cm-11.137 Which of the following is a product obtained by the destructive distillation of coal?
a)
a) Oxygen
b)
b) Methane
c)
c) Benzene
d)
d) Ethanol
138.
Cm-11.138 What is the main reason for the existence of a large number of organic compounds?
a)
A) Catenation
b)
B) Isomerism
c)
C) Multiple bonding
d)
D) Electrical conductivity
139.
Cm-11.139 Which of the following elements exhibit catenation?
a)
A) Oxygen
b)
B) Nitrogen
c)
C) Silicon
d)
D) Carbon
140.
Cm-11.140 What is isomerism?
a)
A) Different molecular formulas for the same compound
b)
B) Different arrangement of atoms in the same molecule
c)
C) Different types of bonds in the same molecule
d)
D) Different chemical properties for the same compound
141.
Cm-11.141 What is the molecular formula for one of the isomers of C5H12?
a)
A) C2H6
b)
B) C3H8
c)
C) C4H10
d)
D) C5H10
142.
Cm-11.142 Which of the following elements is not a constituent of organic compounds?
a)
A) Carbon
b)
B) Hydrogen
c)
C) Oxygen
d)
D) Iron
143.
Cm-11.143 Which type of bond do organic compounds mostly contain?
a)
A) Ionic bonds
b)
B) Covalent bonds
c)
C) Metallic bonds
d)
D) Hydrogen bonds
144.
Cm-11.144 Which type of solvent is suitable for dissolving non-polar organic compounds?
a)
A) Water
b)
B) Alcohol
c)
C) Ether
d)
D) Acetone
145.
Cm-11.145 Are organic compounds good conductors of electricity?
a)
A) Yes, they are good conductors
b)
B) No, they are poor conductors
c)
C) It depends on the type of bond present
d)
D) None of the above
146.
Cm-11.146 Which type of compounds have high melting and boiling points?
a)
A) Organic compounds
b)
B) Inorganic compounds
c)
C) Both organic and inorganic compounds
d)
D) None of the above
147.
Cm-11.147 Which type of compounds are generally more stable?
a)
A) Organic compounds
b)
B) Inorganic compounds
c)
C) Both organic and inorganic compounds are equally stable
d)
D) None of the above
148.
Cm-11.148 Which type of compounds are more combustible?
a)
A) Organic compounds
b)
B) Inorganic compounds
c)
C) Both organic and inorganic compounds are equally combustible
d)
D) None of the above
149.
Cm-11.149 What is the main characteristic of organic compounds that differentiates them from inorganic substances?
a)
A) Solubility
b)
B) Covalent linkage
c)
C) Melting and boiling points
d)
D) Isomerism
150.
Cm-11.150 Which type of compounds exhibit the phenomenon of isomerism?
a)
A) Organic compounds
b)
B) Inorganic compounds
c)
C) Both organic and inorganic compounds
d)
D) None of the above
151.
Cm-11.151 What is the essential constituent of all organic compounds?
a)
A) Carbon
b)
B) Hydrogen
c)
C) Oxygen
d)
D) Nitrogen
152.
Cm-11.152 Which of the following elements does not exhibit catenation?
a)
A) Carbon
b)
B) Nitrogen
c)
C) Silicon
d)
D) Oxygen
153.
Cm-11.153 Is coal tar a compound?
a)
a) Yes
b)
b) No
154.
Cm-11.154 Are carbonates considered organic compounds?
a)
a) Yes
b)
b) No
155.
Cm-11.155 Can organic compounds have the same molecular formula but different structural formulae?
a)
a) Yes
b)
b) No
100 %
