Major Competitive Exams
Q. Which of the following is a common household disinfectant?
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A.
Bleach
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B.
Vinegar
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C.
Baking soda
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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?
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A.
Friedel-Crafts alkylation
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B.
Hydrogenation
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C.
Dehydration
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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
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B.
Dehydrogenation
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C.
Electrophilic substitution
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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
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B.
BET method
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C.
XRD
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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?
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A.
TGA
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B.
BET method
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C.
XRD
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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?
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A.
+2
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B.
+3
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C.
+6
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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?
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A.
H2O2
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B.
NaCl
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C.
CH4
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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
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B.
Sodium benzoate
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C.
Sucrose
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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?
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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
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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?
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A.
Pain relief
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B.
Antibiotic
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C.
Antidepressant
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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?
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A.
Pain relief
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B.
Antibiotic
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C.
Antidepressant
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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?
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A.
Disinfecting water
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B.
Flavoring food
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C.
Coloring hair
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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?
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A.
Fuel
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B.
Antiseptic
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C.
Solvent
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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?
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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?
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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 ketones?
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A.
Solvents
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B.
Preservatives
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C.
Fragrances
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D.
All of the above
Solution
Ketones are commonly used as solvents, preservatives, and fragrances.
Correct Answer: D — All of the above
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Q. Which of the following is a common use of polyethylene?
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A.
Insulation for wires
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B.
Packaging materials
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C.
Automobile parts
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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)?
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A.
Food packaging
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B.
Electrical insulation
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C.
Clothing
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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 PVC?
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A.
Clothing
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B.
Pipes
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C.
Food packaging
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D.
Adhesives
Solution
PVC (Polyvinyl Chloride) is commonly used in the production of pipes due to its durability and resistance to corrosion.
Correct Answer: B — Pipes
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Q. Which of the following is a common use of silicon?
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A.
Fertilizers
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B.
Semiconductors
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C.
Explosives
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D.
Dyes
Solution
Silicon is widely used in semiconductors.
Correct Answer: B — Semiconductors
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Q. Which of the following is a common use of sodium bicarbonate in everyday life?
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A.
Baking
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B.
Cleaning
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C.
Pest control
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D.
All of the above
Solution
Sodium bicarbonate, or baking soda, is used in baking, cleaning, and even pest control.
Correct Answer: D — All of the above
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Q. Which of the following is a common use of transition metals?
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A.
Insulators
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B.
Catalysts
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C.
Noble gases
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D.
Non-metals
Solution
Transition metals are commonly used as catalysts in various chemical reactions.
Correct Answer: B — Catalysts
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Q. Which of the following is a common use of vinegar in households?
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A.
Cleaning agent
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B.
Food preservative
-
C.
Flavoring agent
-
D.
All of the above
Solution
Vinegar is used in households for cleaning, preserving food, and as a flavoring agent.
Correct Answer: D — All of the above
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Q. Which of the following is a common use of vinegar?
-
A.
Preservative
-
B.
Cleaning agent
-
C.
Flavoring agent
-
D.
All of the above
Solution
Vinegar is used as a preservative, cleaning agent, and flavoring agent.
Correct Answer: D — All of the above
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Q. Which of the following is a component of nucleotides?
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A.
Fatty acids
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B.
Amino acids
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C.
Nitrogenous bases
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D.
Monosaccharides
Solution
Nucleotides are made up of a nitrogenous base, a sugar, and a phosphate group.
Correct Answer: C — Nitrogenous bases
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Q. Which of the following is a compound of hydrogen and carbon?
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A.
H2O
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B.
CH4
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C.
NaH
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D.
HCl
Solution
Methane (CH4) is a compound of hydrogen and carbon.
Correct Answer: B — CH4
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Q. Which of the following is a consequence of acid rain?
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A.
Soil degradation
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B.
Increased biodiversity
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C.
Improved crop yield
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D.
None of the above
Solution
Acid rain leads to soil degradation, harming plant life and reducing biodiversity.
Correct Answer: A — Soil degradation
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Q. Which of the following is a consequence of eutrophication in water bodies?
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A.
Increased biodiversity
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B.
Decreased oxygen levels
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C.
Improved water clarity
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D.
Reduced algal growth
Solution
Eutrophication leads to increased nutrient levels, resulting in algal blooms that decrease oxygen levels in water bodies.
Correct Answer: B — Decreased oxygen levels
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