Q. Which carbohydrate is commonly used as a sweetener?
-
A.
Lactose
-
B.
Maltose
-
C.
Fructose
-
D.
Cellulose
Solution
Fructose is commonly used as a sweetener due to its high sweetness level.
Correct Answer:
C
— Fructose
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Q. Which carbohydrate is found in milk?
-
A.
Lactose
-
B.
Maltose
-
C.
Glucose
-
D.
Fructose
Solution
Lactose is the sugar found in milk, composed of glucose and galactose.
Correct Answer:
A
— Lactose
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Q. Which carbohydrate is found in the structure of DNA?
-
A.
Glucose
-
B.
Ribose
-
C.
Fructose
-
D.
Mannose
Solution
Ribose is the sugar component of RNA, while deoxyribose is found in DNA.
Correct Answer:
B
— Ribose
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Q. Which carbohydrate is known as blood sugar?
-
A.
Galactose
-
B.
Fructose
-
C.
Glucose
-
D.
Ribose
Solution
Glucose is commonly referred to as blood sugar as it is the primary energy source for the body's cells.
Correct Answer:
C
— Glucose
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Q. Which carbohydrate is primarily stored in animal liver and muscle?
-
A.
Cellulose
-
B.
Starch
-
C.
Glycogen
-
D.
Fructose
Solution
Glycogen is the carbohydrate primarily stored in animal liver and muscle as a form of energy reserve.
Correct Answer:
C
— Glycogen
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Q. Which carboxylic acid has the highest boiling point?
-
A.
Formic acid
-
B.
Acetic acid
-
C.
Propanoic acid
-
D.
Butanoic acid
Solution
Butanoic acid has the highest boiling point due to its longer carbon chain.
Correct Answer:
D
— Butanoic acid
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Q. Which carboxylic acid is commonly known as 'butyric acid'?
-
A.
C3H6O2
-
B.
C4H8O2
-
C.
C5H10O2
-
D.
C2H4O2
Solution
Butyric acid has the molecular formula C4H8O2.
Correct Answer:
B
— C4H8O2
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Q. Which carboxylic acid is commonly known as formic acid?
-
A.
Methanoic acid
-
B.
Ethanoic acid
-
C.
Propanoic acid
-
D.
Butanoic acid
Solution
Formic acid is the common name for Methanoic acid.
Correct Answer:
A
— Methanoic acid
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Q. Which carboxylic acid is commonly known as vinegar?
-
A.
Formic acid
-
B.
Acetic acid
-
C.
Citric acid
-
D.
Lactic acid
Solution
Acetic acid is commonly known as vinegar.
Correct Answer:
B
— Acetic acid
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Q. Which carboxylic acid is found in citrus fruits? (2023)
-
A.
Acetic acid
-
B.
Citric acid
-
C.
Lactic acid
-
D.
Formic acid
Solution
Citric acid is the carboxylic acid found in citrus fruits, contributing to their sour taste.
Correct Answer:
B
— Citric acid
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Q. Which carboxylic acid is found in vinegar?
-
A.
Citric acid
-
B.
Acetic acid
-
C.
Lactic acid
-
D.
Formic acid
Solution
Acetic acid is the main component found in vinegar.
Correct Answer:
B
— Acetic acid
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Q. Which carboxylic acid is known for its role in the Krebs cycle? (2019)
-
A.
Citric acid
-
B.
Acetic acid
-
C.
Lactic acid
-
D.
Formic acid
Solution
Citric acid plays a crucial role in the Krebs cycle, which is a key metabolic pathway.
Correct Answer:
A
— Citric acid
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Q. Which carboxylic acid is known for its use in the food industry as a preservative? (2023)
-
A.
Citric acid
-
B.
Acetic acid
-
C.
Lactic acid
-
D.
Formic acid
Solution
Acetic acid is widely used in the food industry as a preservative and flavoring agent.
Correct Answer:
B
— Acetic acid
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Q. Which carboxylic acid is known for its use in the production of biodiesel? (2023)
-
A.
Palmitic acid
-
B.
Stearic acid
-
C.
Oleic acid
-
D.
Linoleic acid
Solution
Oleic acid is commonly used in the production of biodiesel due to its favorable properties.
Correct Answer:
C
— Oleic acid
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Q. Which carboxylic acid is known for its use in the production of nylon? (2019)
-
A.
Adipic acid
-
B.
Citric acid
-
C.
Lactic acid
-
D.
Acetic acid
Solution
Adipic acid is used in the production of nylon, particularly nylon 6,6.
Correct Answer:
A
— Adipic acid
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Q. Which carboxylic acid is responsible for the sour taste in citrus fruits? (2020)
-
A.
Citric acid
-
B.
Acetic acid
-
C.
Lactic acid
-
D.
Formic acid
Solution
Citric acid is responsible for the sour taste in citrus fruits.
Correct Answer:
A
— Citric acid
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Q. Which carboxylic acid is responsible for the sour taste in sour milk? (2020)
-
A.
Lactic acid
-
B.
Acetic acid
-
C.
Citric acid
-
D.
Formic acid
Solution
Lactic acid is produced during the fermentation of lactose in sour milk, giving it a sour taste.
Correct Answer:
A
— Lactic acid
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Q. Which carboxylic acid is used in the production of nylon? (2023)
-
A.
Hexanoic acid
-
B.
Adipic acid
-
C.
Citric acid
-
D.
Acetic acid
Solution
Adipic acid is used in the production of nylon, specifically nylon-6,6.
Correct Answer:
B
— Adipic acid
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Q. Which category had the most significant sales drop according to the bar graph?
-
A.
Electronics
-
B.
Clothing
-
C.
Groceries
-
D.
Furniture
Solution
The bar graph indicates that clothing had the most significant sales drop compared to other categories.
Correct Answer:
B
— Clothing
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Q. Which category in the bar graph had sales that were consistently higher than the others throughout the year?
-
A.
Clothing
-
B.
Footwear
-
C.
Accessories
-
D.
Jewelry
Solution
Clothing consistently had higher sales than the other categories throughout the year.
Correct Answer:
A
— Clothing
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Q. Which category in the bar graph had sales that were double that of the lowest category?
-
A.
Toys
-
B.
Clothing
-
C.
Electronics
-
D.
Furniture
Solution
The bar graph shows that Toys had sales that were double that of the lowest category, Furniture.
Correct Answer:
A
— Toys
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Q. Which checkpoint in the cell cycle ensures that DNA is not damaged before replication? (2023)
-
A.
G1 checkpoint
-
B.
G2 checkpoint
-
C.
M checkpoint
-
D.
S checkpoint
Solution
The G1 checkpoint assesses the cell's size and DNA integrity before it enters the S phase for replication.
Correct Answer:
A
— G1 checkpoint
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Q. Which chemical compound is primarily responsible for ozone depletion?
-
A.
CFCs
-
B.
CO2
-
C.
SO2
-
D.
NOx
Solution
Chlorofluorocarbons (CFCs) are primarily responsible for ozone depletion in the stratosphere.
Correct Answer:
A
— CFCs
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Q. Which chemical is commonly found in household bleach?
-
A.
Hydrogen peroxide
-
B.
Sodium hypochlorite
-
C.
Ammonium hydroxide
-
D.
Calcium hypochlorite
Solution
Sodium hypochlorite is the active ingredient in most household bleach products.
Correct Answer:
B
— Sodium hypochlorite
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Q. Which chemical is commonly used as a food preservative?
-
A.
Sodium chloride
-
B.
Sodium benzoate
-
C.
Vinegar
-
D.
Sugar
Solution
Sodium benzoate is a widely used food preservative that inhibits the growth of bacteria and fungi.
Correct Answer:
B
— Sodium benzoate
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Q. Which chemical is commonly used to treat drinking water?
-
A.
Chlorine
-
B.
Fluoride
-
C.
Sodium bicarbonate
-
D.
Sulfuric acid
Solution
Chlorine is commonly used to disinfect drinking water and kill harmful bacteria.
Correct Answer:
A
— Chlorine
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Q. Which chemical is primarily responsible for ozone depletion?
-
A.
Carbon Dioxide
-
B.
Chlorofluorocarbons (CFCs)
-
C.
Methane
-
D.
Sulfur Dioxide
Solution
Chlorofluorocarbons (CFCs) are primarily responsible for ozone depletion in the stratosphere.
Correct Answer:
B
— Chlorofluorocarbons (CFCs)
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Q. Which chemical is primarily responsible for the depletion of the ozone layer?
-
A.
Carbon Dioxide
-
B.
Chlorofluorocarbons (CFCs)
-
C.
Methane
-
D.
Sulfur Dioxide
Solution
Chlorofluorocarbons (CFCs) are responsible for the depletion of the ozone layer, as they release chlorine atoms that destroy ozone molecules.
Correct Answer:
B
— Chlorofluorocarbons (CFCs)
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Q. Which class of animals is characterized by having scales and laying eggs on land? (2022)
-
A.
Amphibia
-
B.
Reptilia
-
C.
Aves
-
D.
Mammalia
Solution
Reptiles are characterized by having scales and typically lay eggs on land.
Correct Answer:
B
— Reptilia
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Q. Which class of animals is characterized by the presence of scales? (2023)
-
A.
Amphibia
-
B.
Reptilia
-
C.
Aves
-
D.
Mammalia
Solution
Reptiles are characterized by the presence of scales, which help in protection and water retention.
Correct Answer:
B
— Reptilia
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