Q. Which of the following is a common use of sodium bicarbonate in everyday life?
-
A.
Baking
-
B.
Cleaning
-
C.
Pest control
-
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 vinegar in households?
-
A.
Cleaning agent
-
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
-
B.
CH4
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C.
NaH
-
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?
-
A.
Soil degradation
-
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
-
B.
Decreased oxygen levels
-
C.
Improved water clarity
-
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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Q. Which of the following is a consequence of eutrophication?
-
A.
Increased biodiversity
-
B.
Decreased oxygen levels
-
C.
Improved water clarity
-
D.
Reduction of algal blooms
Solution
Eutrophication leads to decreased oxygen levels in water bodies, which can harm aquatic life.
Correct Answer: B — Decreased oxygen levels
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Q. Which of the following is a consequence of global warming?
-
A.
Rising sea levels
-
B.
Increased ice cover
-
C.
Decreased temperatures
-
D.
None of the above
Solution
Global warming leads to rising sea levels due to the melting of polar ice and glaciers.
Correct Answer: A — Rising sea levels
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Q. Which of the following is a consequence of Raoult's Law in a binary solution?
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A.
The total vapor pressure is the sum of the partial pressures.
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B.
The total vapor pressure is always lower than the vapor pressure of the pure solvent.
-
C.
The mole fraction of the solute is always greater than that of the solvent.
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D.
The boiling point of the solution is always higher than that of the pure solvent.
Solution
According to Raoult's Law, the total vapor pressure of a binary solution is the sum of the partial pressures of each component.
Correct Answer: A — The total vapor pressure is the sum of the partial pressures.
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Q. Which of the following is a correct application of Raoult's Law?
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A.
Calculating the boiling point elevation
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B.
Determining the freezing point depression
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C.
Finding the vapor pressure of a solution
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D.
Measuring the solubility of a gas in a liquid
Solution
Raoult's Law is used to find the vapor pressure of a solution based on the vapor pressures of its components.
Correct Answer: C — Finding the vapor pressure of a solution
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Q. Which of the following is a correct expression for Gibbs Free Energy?
-
A.
ΔG = ΔH + TΔS
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B.
ΔG = ΔH - TΔS
-
C.
ΔG = TΔS - ΔH
-
D.
ΔG = ΔS - ΔH
Solution
The correct expression for Gibbs Free Energy is ΔG = ΔH - TΔS.
Correct Answer: B — ΔG = ΔH - TΔS
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Q. Which of the following is a correct statement about the law of conservation of mass?
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A.
Mass can be created
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B.
Mass can be destroyed
-
C.
Mass is conserved in a chemical reaction
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D.
Mass changes in a physical change
Solution
The law of conservation of mass states that mass is neither created nor destroyed in a chemical reaction.
Correct Answer: C — Mass is conserved in a chemical reaction
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Q. Which of the following is a correct unit for concentration?
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A.
Molarity
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B.
Molality
-
C.
Mass percent
-
D.
All of the above
Solution
All listed options are valid units for concentration.
Correct Answer: D — All of the above
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Q. Which of the following is a correct unit for Gibbs Free Energy?
-
A.
Joules per mole (J/mol)
-
B.
Kilojoules (kJ)
-
C.
Calories (cal)
-
D.
All of the above
Solution
Gibbs Free Energy can be expressed in various units, including Joules per mole, kilojoules, and calories.
Correct Answer: D — All of the above
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Q. Which of the following is a correct unit for molality?
-
A.
mol/L
-
B.
mol/kg
-
C.
mol/mL
-
D.
mol/1000g
Solution
Molality is defined as moles of solute per kilogram of solvent, hence the unit is mol/kg.
Correct Answer: B — mol/kg
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Q. Which of the following is a derivative of benzene?
-
A.
Ethylene
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B.
Acetylene
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C.
Phenol
-
D.
Propylene
Solution
Phenol is a derivative of benzene, where one hydrogen atom is replaced by a hydroxyl group (-OH).
Correct Answer: C — Phenol
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Q. Which of the following is a derivative of carboxylic acid?
-
A.
Alcohol
-
B.
Aldehyde
-
C.
Ester
-
D.
Alkane
Solution
Ester is a derivative of carboxylic acid formed by the reaction of an acid with an alcohol.
Correct Answer: C — Ester
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Q. Which of the following is a dicarboxylic acid?
-
A.
Acetic acid
-
B.
Oxalic acid
-
C.
Formic acid
-
D.
Butanoic acid
Solution
Oxalic acid (C2H2O4) is a dicarboxylic acid as it contains two carboxylic acid groups.
Correct Answer: B — Oxalic acid
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Q. Which of the following is a disaccharide?
-
A.
Fructose
-
B.
Maltose
-
C.
Glucose
-
D.
Glycogen
Solution
Maltose is a disaccharide composed of two glucose units.
Correct Answer: B — Maltose
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Q. Which of the following is a function of carbohydrates?
-
A.
Energy source
-
B.
Hormone production
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C.
Genetic coding
-
D.
Cell membrane structure
Solution
Carbohydrates primarily serve as an energy source for living organisms.
Correct Answer: A — Energy source
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Q. Which of the following is a function of lipids?
-
A.
Energy storage
-
B.
Catalysis
-
C.
Genetic information
-
D.
Structural support
Solution
Lipids are primarily used for energy storage in organisms.
Correct Answer: A — Energy storage
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Q. Which of the following is a function of proteins in the body?
-
A.
Energy storage
-
B.
Hormonal regulation
-
C.
Transport of molecules
-
D.
All of the above
Solution
Proteins serve multiple functions in the body, including energy storage, hormonal regulation, and transport of molecules.
Correct Answer: D — All of the above
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Q. Which of the following is a function of proteins?
-
A.
Energy storage
-
B.
Hormonal regulation
-
C.
Genetic information
-
D.
Cell membrane structure
Solution
Proteins play a crucial role in hormonal regulation among other functions.
Correct Answer: B — Hormonal regulation
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Q. Which of the following is a heavy metal that can cause environmental pollution?
-
A.
Iron
-
B.
Lead
-
C.
Calcium
-
D.
Sodium
Solution
Lead is a heavy metal that can accumulate in the environment and is toxic to living organisms.
Correct Answer: B — Lead
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Q. Which of the following is a heavy metal that poses environmental hazards?
-
A.
Sodium
-
B.
Calcium
-
C.
Lead
-
D.
Potassium
Solution
Lead is a heavy metal that poses significant environmental and health hazards.
Correct Answer: C — Lead
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Q. Which of the following is a hydrogen compound that acts as a reducing agent?
-
A.
H2O
-
B.
H2S
-
C.
HCl
-
D.
H2O2
Solution
Hydrogen sulfide (H2S) acts as a reducing agent.
Correct Answer: B — H2S
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Q. Which of the following is a hydrogen compound?
-
A.
H2O
-
B.
CO2
-
C.
NaCl
-
D.
O2
Solution
Water (H2O) is a compound that contains hydrogen.
Correct Answer: A — H2O
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Q. Which of the following is a ketone?
-
A.
Propionaldehyde
-
B.
Butanal
-
C.
Acetone
-
D.
Formaldehyde
Solution
Acetone (CH3COCH3) is a ketone.
Correct Answer: C — Acetone
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Q. Which of the following is a lanthanide element?
-
A.
Cerium
-
B.
Zirconium
-
C.
Titanium
-
D.
Vanadium
Solution
Cerium is a lanthanide element, while the others are transition metals.
Correct Answer: A — Cerium
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