Q. Which of the following is a characteristic reaction of haloalkanes?
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A.
Electrophilic addition
-
B.
Nucleophilic substitution
-
C.
Free radical substitution
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D.
Hydrogenation
Solution
Nucleophilic substitution is a characteristic reaction of haloalkanes, where a nucleophile replaces the halogen atom.
Correct Answer: B — Nucleophilic substitution
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Q. Which of the following is a characteristic reaction of haloarenes?
-
A.
Nucleophilic substitution
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B.
Electrophilic substitution
-
C.
Hydrogenation
-
D.
Dehydrohalogenation
Solution
Haloarenes typically undergo nucleophilic substitution reactions due to the presence of the aromatic ring.
Correct Answer: B — Electrophilic substitution
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Q. Which of the following is a characteristic reaction of ketones?
-
A.
Oxidation to carboxylic acids
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B.
Reduction to alcohols
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C.
Formation of hemiacetals
-
D.
Formation of aldehydes
Solution
Ketones can react with alcohols to form hemiacetals, which is a characteristic reaction.
Correct Answer: C — Formation of hemiacetals
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Q. Which of the following is a characteristic reaction of phenols?
-
A.
Formation of esters
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B.
Formation of ethers
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C.
Electrophilic substitution
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D.
Reduction to alcohols
Solution
Phenols undergo electrophilic substitution reactions due to the presence of the hydroxyl group, which activates the benzene ring.
Correct Answer: C — Electrophilic substitution
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Q. Which of the following is a colligative property?
-
A.
Boiling point elevation
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B.
Density
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C.
Viscosity
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D.
Color
Solution
Boiling point elevation is a colligative property that depends on the number of solute particles in a solution.
Correct Answer: A — Boiling point elevation
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Q. Which of the following is a common antiseptic used in households?
-
A.
Ethanol
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B.
Acetic acid
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C.
Sodium chloride
-
D.
Sodium bicarbonate
Solution
Ethanol is widely used as an antiseptic in households for disinfecting purposes.
Correct Answer: A — Ethanol
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Q. Which of the following is a common application of adsorption?
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A.
Catalysis
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B.
Separation of gases
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C.
Water purification
-
D.
All of the above
Solution
Adsorption is widely used in catalysis, gas separation, and water purification processes.
Correct Answer: D — All of the above
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Q. Which of the following is a common application of baking soda in cooking?
-
A.
Thickening agent
-
B.
Leavening agent
-
C.
Flavor enhancer
-
D.
Preservative
Solution
Baking soda acts as a leavening agent, helping baked goods rise by producing carbon dioxide.
Correct Answer: B — Leavening agent
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Q. Which of the following is a common electrophile in electrophilic aromatic substitution?
-
A.
Br2
-
B.
H2O
-
C.
NaOH
-
D.
CH3OH
Solution
Bromine (Br2) can act as an electrophile in the presence of a catalyst like FeBr3 during electrophilic aromatic substitution.
Correct Answer: A — Br2
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Q. Which of the following is a common electrophile in electrophilic aromatic substitution reactions?
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A.
Bromine
-
B.
Hydrogen
-
C.
Water
-
D.
Methane
Solution
Bromine, often in the presence of a catalyst like FeBr3, acts as a common electrophile in electrophilic aromatic substitution reactions.
Correct Answer: A — Bromine
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Q. Which of the following is a common household disinfectant?
-
A.
Bleach
-
B.
Vinegar
-
C.
Baking soda
-
D.
Salt
Solution
Bleach is widely used as a disinfectant to kill bacteria and viruses.
Correct Answer: A — Bleach
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Q. Which of the following is a common method for synthesizing aromatic compounds?
-
A.
Friedel-Crafts alkylation
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B.
Hydrogenation
-
C.
Dehydration
-
D.
Oxidation
Solution
Friedel-Crafts alkylation is a common method used to synthesize aromatic compounds by introducing alkyl groups onto the aromatic ring.
Correct Answer: A — Friedel-Crafts alkylation
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Q. Which of the following is a common method for the synthesis of aromatic compounds?
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A.
Hydrogenation
-
B.
Dehydrogenation
-
C.
Electrophilic substitution
-
D.
Nucleophilic addition
Solution
Electrophilic substitution is a common method for synthesizing aromatic compounds by introducing new substituents onto the aromatic ring.
Correct Answer: C — Electrophilic substitution
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Q. Which of the following is a common method to measure the surface area of adsorbents?
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A.
TGA
-
B.
BET method
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C.
XRD
-
D.
FTIR
Solution
The BET method (Brunauer-Emmett-Teller) is commonly used to measure the surface area of adsorbents.
Correct Answer: B — BET method
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Q. Which of the following is a common method to measure the surface area of an adsorbent?
-
A.
TGA
-
B.
BET method
-
C.
XRD
-
D.
FTIR
Solution
The BET method (Brunauer-Emmett-Teller) is commonly used to measure the surface area of adsorbents.
Correct Answer: B — BET method
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Q. Which of the following is a common oxidation state of Chromium?
-
A.
+2
-
B.
+3
-
C.
+6
-
D.
All of the above
Solution
Chromium can exhibit multiple oxidation states including +2, +3, and +6.
Correct Answer: D — All of the above
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Q. Which of the following is a common oxidizing agent?
-
A.
H2O2
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B.
NaCl
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C.
CH4
-
D.
C6H12O6
Solution
Hydrogen peroxide (H2O2) is a well-known oxidizing agent.
Correct Answer: A — H2O2
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Q. Which of the following is a common preservative used in food?
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A.
Sodium chloride
-
B.
Sodium benzoate
-
C.
Sucrose
-
D.
Vinegar
Solution
Sodium benzoate is commonly used as a preservative to inhibit the growth of bacteria and fungi.
Correct Answer: B — Sodium benzoate
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Q. Which of the following is a common property of group 14 elements?
-
A.
They are all gases
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B.
They can form multiple oxidation states
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C.
They are all nonmetals
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D.
They have low melting points
Solution
Group 14 elements can exhibit multiple oxidation states, such as +4 and +2.
Correct Answer: B — They can form multiple oxidation states
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Q. Which of the following is a common test for the presence of aromatic compounds?
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A.
Bromine water test
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B.
Baeyer test
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C.
Tollen's test
-
D.
Benzene test
Solution
The bromine water test can be used to detect unsaturation; however, aromatic compounds do not react with bromine water, indicating their stability.
Correct Answer: A — Bromine water test
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Q. Which of the following is a common use of aspirin in everyday life?
-
A.
Pain relief
-
B.
Antibiotic
-
C.
Antidepressant
-
D.
Antihistamine
Solution
Aspirin is widely used for pain relief due to its analgesic properties.
Correct Answer: A — Pain relief
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Q. Which of the following is a common use of aspirin?
-
A.
Pain relief
-
B.
Antibiotic
-
C.
Antidepressant
-
D.
Antihistamine
Solution
Aspirin is commonly used for pain relief and to reduce inflammation.
Correct Answer: A — Pain relief
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Q. Which of the following is a common use of chlorine in everyday life?
-
A.
Disinfecting water
-
B.
Flavoring food
-
C.
Coloring hair
-
D.
Preserving meat
Solution
Chlorine is commonly used to disinfect drinking water, making it safe for consumption.
Correct Answer: A — Disinfecting water
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Q. Which of the following is a common use of ethanol in everyday life?
-
A.
Fuel
-
B.
Antiseptic
-
C.
Solvent
-
D.
All of the above
Solution
Ethanol is used as a fuel, antiseptic, and solvent, making it versatile in everyday applications.
Correct Answer: D — All of the above
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Q. Which of the following is a common use of ethanol?
-
A.
Fuel
-
B.
Antiseptic
-
C.
Solvent
-
D.
All of the above
Solution
Ethanol is widely used as a fuel, antiseptic, and solvent, making it versatile in everyday applications.
Correct Answer: D — All of the above
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Q. Which of the following is a common use of hydrogen peroxide in households?
-
A.
Disinfectant
-
B.
Bleach
-
C.
Antiseptic
-
D.
All of the above
Solution
Hydrogen peroxide is used as a disinfectant, bleach, and antiseptic in various household applications.
Correct Answer: D — All of the above
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Q. Which of the following is a common use of hydrogen peroxide?
-
A.
Disinfectant
-
B.
Bleach
-
C.
Antiseptic
-
D.
All of the above
Solution
Hydrogen peroxide is used as a disinfectant, bleach, and antiseptic.
Correct Answer: D — All of the above
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Q. Which of the following is a common use of polyethylene?
-
A.
Insulation for wires
-
B.
Packaging materials
-
C.
Automobile parts
-
D.
Textiles
Solution
Polyethylene is widely used in packaging materials due to its flexibility and durability.
Correct Answer: B — Packaging materials
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Q. Which of the following is a common use of polyvinyl chloride (PVC)?
-
A.
Food packaging
-
B.
Electrical insulation
-
C.
Clothing
-
D.
Automobile tires
Solution
Polyvinyl chloride (PVC) is commonly used in electrical insulation and construction materials.
Correct Answer: B — Electrical insulation
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Q. Which of the following is a common use of silicon?
-
A.
Fertilizers
-
B.
Semiconductors
-
C.
Explosives
-
D.
Dyes
Solution
Silicon is widely used in semiconductors.
Correct Answer: B — Semiconductors
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