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These important questions of BSC Chemistry Important Questions Pune University 2024 are prepared by experienced teachers of reputed institutes, there is a high possibility of these questions coming in the paper, so prepare them well.
Acid Bases and Salts Important Questions 2024
What are the observable properties of acids and bases?
Acids are known to have a sour taste and can turn blue litmus paper red. Bases, on the other hand, taste bitter, feel slippery, and can restore the blue color of litmus paper that has been reddened by an acid.
How do acids and bases conduct electricity?
Both acids and bases conduct an electric current, which is a characteristic of their ionic nature in solution.
What happens when acids react with active metals?
Acids react with active metals to produce hydrogen gas (H2).
How do acids and bases behave in water?
When acids and bases are dissolved in water, they can dissociate into ions to varying extents. Strong acids and bases dissociate completely, while weak acids and bases only partially dissociate.
What is the Brønsted-Lowry definition of acids and bases?
According to the Brønsted-Lowry definition, an acid is a proton donor, and a base is a proton acceptor.
How are the strengths of acids and bases determined?
The strength of acids is determined by the magnitude of their acid equilibrium constant (Ka), while the strength of bases is determined by their base equilibrium constant (Kb).
What are some common acids and bases found in everyday life?
Common acids and bases are found in various household items and foods, and they play significant roles in our daily lives.
How do acids and bases affect our bodies and the environment?
Acids and bases can have both beneficial and harmful effects on our bodies and the environment, depending on their concentration and how they are used.
What are the chemical reactions of acids with metals and carbonates?
Acids react with metals to produce hydrogen gas and with carbonates to produce carbon dioxide, water, and a salt.
What roles do bases play in cleaning products?
Bases are commonly used in cleaning products due to their ability to neutralize acids and break down organic materials.
What is the pH scale and how does it work?
The pH scale measures the acidity or alkalinity of a substance, with lower values indicating higher acidity and higher values indicating higher alkalinity.
Explain the concept of neutralization.
Neutralization is the reaction between an acid and a base to produce water and a salt, often resulting in a solution with a pH closer to 7.
How are acids and bases identified using a pH meter?
A pH meter is used to measure the hydrogen ion concentration in a solution, providing a precise pH value to identify the acidic or basic nature of the substance.
What is the difference between strong and weak acids in terms of dissociation?
Strong acids dissociate completely in water, while weak acids only partially dissociate, affecting their relative strengths and behaviors in chemical reactions.
How does ocean acidification affect marine life?
Ocean acidification, caused by increased levels of carbon dioxide, can have detrimental effects on marine organisms and ecosystems, including coral bleaching and shell dissolution.
Acid Bases and Salts Important MCQs 2024
In which condition does red litmus paper turn blue?
A) Acidic
B) Basic
C) Neutral
D) None of the above
Answer: B) Basic
What happens when acids react with active metals?
A) They produce hydrogen gas
B) They produce oxygen gas
C) They produce carbon dioxide
D) They produce water
Answer: A) They produce hydrogen gas
According to the Brønsted-Lowry definition, an acid is a:
A) Proton acceptor
B) Proton donor
C) Electron acceptor
D) Electron donor
Answer: B) Proton donor
What is the pH value of an acidic solution?
A) 7
B) Greater than 7
C) Less than 7
D) 14
Answer: C) Less than 7
What is the characteristic sour taste associated with?
A) Bases
B) Salts
C) Acids
D) Water
Answer: C) Acids
What happens when you keep blue and red litmus paper into the solution of baking soda?
A) Blue litmus turns red, red litmus remains unchanged
B) Red litmus turns blue, blue litmus remains unchanged
C) Both the litmus papers remain unchanged
D) Blue litmus turns red, red litmus turns blue
Answer: B) Red litmus turns blue, blue litmus remains unchanged
What are the products of the neutralization reaction between an acid and a base?
A) Water and a salt
B) Carbon dioxide and water
C) Hydrogen gas and oxygen gas
D) Ammonia and water
Answer: A) Water and a salt
Which of the following is a characteristic property of bases?
A) Sour taste
B) Turn red litmus paper blue
C) Turn blue litmus paper red
D) Produce hydrogen gas when reacting with metals
Answer: B) Turn red litmus paper blue
What is the role of bases in cleaning products?
A) Neutralize acids
B) Produce foam
C) Enhance color
D) Disinfect surfaces
Answer: A) Neutralize acids
Acids react with carbonates to produce:
A) Oxygen gas
B) Carbon dioxide
C) Hydrogen gas
D) Nitrogen gas
Answer: B) Carbon dioxide
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