Q. What is the primary product of the reaction between ethene and bromine?
-
A.
1,2-dibromoethane
-
B.
Bromoethane
-
C.
Ethane
-
D.
Bromobenzene
Solution
Ethene reacts with bromine to form 1,2-dibromoethane through an electrophilic addition mechanism.
Correct Answer:
A
— 1,2-dibromoethane
Learn More →
Q. What is the primary product of the reaction between hydrogen and chlorine? (2019)
-
A.
Hydrochloric acid
-
B.
Hydrogen chloride
-
C.
Chlorine gas
-
D.
Water
Solution
The primary product of the reaction between hydrogen and chlorine is hydrogen chloride (HCl).
Correct Answer:
B
— Hydrogen chloride
Learn More →
Q. What is the primary product of the thermal decomposition of calcium carbonate? (2019)
-
A.
Calcium oxide
-
B.
Calcium hydroxide
-
C.
Calcium bicarbonate
-
D.
Calcium chloride
Solution
The thermal decomposition of calcium carbonate (CaCO3) produces calcium oxide (CaO) and carbon dioxide (CO2).
Correct Answer:
A
— Calcium oxide
Learn More →
Q. What is the primary product when 1-bromo-2-methylpropane reacts with KOH in ethanol?
-
A.
2-methylpropene
-
B.
1-methylpropene
-
C.
2-bromopropane
-
D.
no reaction
Solution
The reaction leads to the formation of 2-methylpropene through an elimination reaction.
Correct Answer:
A
— 2-methylpropene
Learn More →
Q. What is the primary product when 1-chloropropane reacts with potassium tert-butoxide?
-
A.
Propene
-
B.
2-methylpropane
-
C.
1-butene
-
D.
No reaction
Solution
The reaction of 1-chloropropane with potassium tert-butoxide leads to the formation of propene via an elimination reaction.
Correct Answer:
A
— Propene
Learn More →
Q. What is the primary product when a carboxylic acid is reduced with lithium aluminum hydride (LiAlH4)?
-
A.
Alcohol
-
B.
Aldehyde
-
C.
Ketone
-
D.
Ester
Solution
Lithium aluminum hydride reduces carboxylic acids to primary alcohols.
Correct Answer:
A
— Alcohol
Learn More →
Q. What is the primary product when a carboxylic acid reacts with thionyl chloride (SOCl2)?
-
A.
Acid chloride
-
B.
Ester
-
C.
Alcohol
-
D.
Aldehyde
Solution
The primary product of the reaction between a carboxylic acid and thionyl chloride is an acid chloride.
Correct Answer:
A
— Acid chloride
Learn More →
Q. What is the primary product when aluminum reacts with hydrochloric acid? (2020)
-
A.
AlCl3
-
B.
H2
-
C.
Al(OH)3
-
D.
Al2Cl6
Solution
When aluminum reacts with hydrochloric acid, hydrogen gas (H2) is produced along with aluminum chloride (AlCl3).
Correct Answer:
B
— H2
Learn More →
Q. What is the primary product when ammonia reacts with an alkyl halide?
-
A.
Amine
-
B.
Amide
-
C.
Alkane
-
D.
Alcohol
Solution
The primary product of the reaction between ammonia and an alkyl halide is an amine.
Correct Answer:
A
— Amine
Learn More →
Q. What is the primary product when an acid reacts with a metal carbonate?
-
A.
Salt
-
B.
Water
-
C.
Carbon dioxide
-
D.
All of the above
Solution
The reaction produces a salt, water, and carbon dioxide.
Correct Answer:
D
— All of the above
Learn More →
Q. What is the primary product when an alcohol is oxidized?
-
A.
Alkane
-
B.
Aldehyde
-
C.
Ketone
-
D.
Carboxylic acid
Solution
The primary product of the oxidation of a primary alcohol is an aldehyde.
Correct Answer:
B
— Aldehyde
Learn More →
Q. What is the primary product when calcium reacts with oxygen? (2022)
-
A.
Calcium oxide
-
B.
Calcium hydroxide
-
C.
Calcium carbonate
-
D.
Calcium peroxide
Solution
Calcium reacts with oxygen to form calcium oxide (CaO).
Correct Answer:
A
— Calcium oxide
Learn More →
Q. What is the primary product when chlorobenzene is treated with sodium hydroxide at high temperature?
-
A.
Phenol
-
B.
Benzene
-
C.
Chlorobenzene
-
D.
Sodium chloride
Solution
Chlorobenzene reacts with sodium hydroxide at high temperature to form phenol.
Correct Answer:
A
— Phenol
Learn More →
Q. What is the primary product when ethene reacts with water in the presence of an acid?
-
A.
Ethanol
-
B.
Ethane
-
C.
Ethanoic acid
-
D.
Ethylene glycol
Solution
The reaction of ethene with water in the presence of an acid (hydration) produces ethanol.
Correct Answer:
A
— Ethanol
Learn More →
Q. What is the primary product when hydrogen reacts with oxygen?
-
A.
Water
-
B.
Hydrogen peroxide
-
C.
Ozone
-
D.
Hydroxyl radical
Solution
The primary product of the reaction between hydrogen and oxygen is water (H2O).
Correct Answer:
A
— Water
Learn More →
Q. What is the primary product when lithium reacts with nitrogen? (2022)
-
A.
Lithium nitride
-
B.
Lithium oxide
-
C.
Lithium hydroxide
-
D.
Lithium carbonate
Solution
Lithium reacts with nitrogen to form lithium nitride (Li3N).
Correct Answer:
A
— Lithium nitride
Learn More →
Q. What is the primary product when magnesium reacts with dilute hydrochloric acid?
-
A.
Magnesium chloride
-
B.
Hydrogen gas
-
C.
Magnesium hydroxide
-
D.
Magnesium oxide
Solution
The primary products of the reaction between magnesium and dilute hydrochloric acid are magnesium chloride (MgCl2) and hydrogen gas (H2).
Correct Answer:
A
— Magnesium chloride
Learn More →
Q. What is the primary product when potassium permanganate (KMnO4) is reduced in acidic medium? (2019)
-
A.
MnO2
-
B.
Mn2+
-
C.
MnO4-
-
D.
KMnO4
Solution
In acidic medium, potassium permanganate (KMnO4) is reduced to Mn2+.
Correct Answer:
B
— Mn2+
Learn More →
Q. What is the primary product when sodium bicarbonate reacts with hydrochloric acid?
-
A.
Sodium chloride
-
B.
Carbon dioxide
-
C.
Water
-
D.
All of the above
Solution
The reaction produces sodium chloride, carbon dioxide, and water.
Correct Answer:
D
— All of the above
Learn More →
Q. What is the primary purpose of 'graph theory' in modern mathematics?
-
A.
To analyze the relationships between geometric shapes
-
B.
To study the properties of numbers
-
C.
To model pairwise relationships between objects
-
D.
To solve algebraic equations
Solution
Graph theory focuses on the study of graphs, which are mathematical structures used to model pairwise relationships between objects.
Correct Answer:
C
— To model pairwise relationships between objects
Learn More →
Q. What is the primary purpose of a demodulator in a communication system?
-
A.
To amplify the signal
-
B.
To convert the signal back to its original form
-
C.
To filter the noise
-
D.
To encode the signal
Solution
A demodulator converts the modulated signal back to its original form.
Correct Answer:
B
— To convert the signal back to its original form
Learn More →
Q. What is the primary purpose of a firewall? (2023)
-
A.
To speed up internet connection
-
B.
To protect against unauthorized access
-
C.
To store data
-
D.
To manage network traffic
Solution
The primary purpose of a firewall is to protect a network from unauthorized access and threats.
Correct Answer:
B
— To protect against unauthorized access
Learn More →
Q. What is the primary purpose of a modulator in a communication system?
-
A.
To amplify the signal
-
B.
To convert digital signals to analog
-
C.
To filter noise
-
D.
To encode information
Solution
A modulator converts digital signals to analog for transmission.
Correct Answer:
B
— To convert digital signals to analog
Learn More →
Q. What is the primary purpose of a national budget? (2023)
-
A.
To control inflation
-
B.
To allocate resources
-
C.
To increase GDP
-
D.
To reduce taxes
Solution
The primary purpose of a national budget is to allocate resources effectively across various sectors.
Correct Answer:
B
— To allocate resources
Learn More →
Q. What is the primary purpose of a partnership agreement?
-
A.
To outline the tax obligations of the partners
-
B.
To define the terms of the partnership and protect the interests of partners
-
C.
To establish a marketing strategy
-
D.
To determine the location of the business
Solution
The primary purpose of a partnership agreement is to define the terms of the partnership and protect the interests of all partners involved.
Correct Answer:
B
— To define the terms of the partnership and protect the interests of partners
Learn More →
Q. What is the primary purpose of a process in an operating system?
-
A.
To manage hardware resources
-
B.
To execute programs
-
C.
To provide user interfaces
-
D.
To handle file systems
Solution
A process is an instance of a program in execution, and its primary purpose is to execute the program.
Correct Answer:
B
— To execute programs
Learn More →
Q. What is the primary purpose of a web browser? (2022)
-
A.
To send emails
-
B.
To browse the internet
-
C.
To create websites
-
D.
To store files
Solution
The primary purpose of a web browser is to browse the internet and display web pages.
Correct Answer:
B
— To browse the internet
Learn More →
Q. What is the primary purpose of an operating system?
-
A.
To manage hardware resources
-
B.
To create documents
-
C.
To browse the internet
-
D.
To play games
Solution
The primary purpose of an operating system is to manage hardware resources.
Correct Answer:
A
— To manage hardware resources
Learn More →
Q. What is the primary purpose of applying constraints to a set in mathematical contexts?
-
A.
To increase the number of elements in the set.
-
B.
To ensure all elements are unique.
-
C.
To filter elements based on specific criteria.
-
D.
To create a larger set.
Solution
The primary purpose of applying constraints is to filter elements based on specific criteria, thus refining the set.
Correct Answer:
C
— To filter elements based on specific criteria.
Learn More →
Q. What is the primary purpose of applying constraints to sets in mathematical contexts?
-
A.
To increase the number of elements in a set.
-
B.
To simplify the analysis of the set.
-
C.
To ensure all elements are unique.
-
D.
To define a specific subset of elements.
Solution
The primary purpose of applying constraints is to define a specific subset of elements that meet certain criteria.
Correct Answer:
D
— To define a specific subset of elements.
Learn More →
Showing 20371 to 20400 of 28625 (955 Pages)