Q. What is the main method of hydrogen production in the industry? (2022)
A.
Electrolysis of water
B.
Steam reforming of natural gas
C.
Thermolysis of water
D.
Photosynthesis
Show solution
Solution
The main method of hydrogen production in the industry is steam reforming of natural gas.
Correct Answer:
B
— Steam reforming of natural gas
Learn More →
Q. What is the main method of hydrogen production in the laboratory? (2020)
A.
Electrolysis of water
B.
Thermal decomposition of water
C.
Reaction of metals with acids
D.
Steam reforming
Show solution
Solution
In the laboratory, hydrogen is commonly produced by the reaction of metals (like zinc) with acids.
Correct Answer:
C
— Reaction of metals with acids
Learn More →
Q. What is the main monomer used to produce polystyrene? (2021)
A.
Ethylene
B.
Styrene
C.
Propylene
D.
Vinyl chloride
Show solution
Solution
Polystyrene is produced from the polymerization of styrene monomers.
Correct Answer:
B
— Styrene
Learn More →
Q. What is the main product formed when aluminum reacts with hydrochloric acid? (2023)
A.
AlCl3
B.
H2
C.
Al(OH)3
D.
Al2O3
Show solution
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 main product formed when hydrogen reacts with oxygen? (2019)
A.
Hydrogen peroxide
B.
Water
C.
Ozone
D.
Hydrochloric acid
Show solution
Solution
When hydrogen reacts with oxygen, the main product formed is water (H2O).
Correct Answer:
B
— Water
Learn More →
Q. What is the main product of the reaction between aluminum and hydrochloric acid? (2023)
A.
AlCl3
B.
H2
C.
Al(OH)3
D.
Al2Cl6
Show solution
Solution
The main product of the reaction between aluminum and hydrochloric acid is hydrogen gas (H2).
Correct Answer:
B
— H2
Learn More →
Q. What is the main product of the reaction between an acid and a base? (2019)
A.
Salt
B.
Water
C.
Hydrogen gas
D.
Carbon dioxide
Show solution
Solution
The main products of the neutralization reaction between an acid and a base are salt and water.
Correct Answer:
A
— Salt
Learn More →
Q. What is the main product of the reaction of 1-bromo-2-methylpropane with KOH in ethanol? (2020)
A.
2-methylpropene
B.
2-methylpropan-1-ol
C.
1-bromo-2-methylpropane
D.
2-bromo-2-methylpropane
Show solution
Solution
The reaction of 1-bromo-2-methylpropane with KOH in ethanol leads to the formation of 2-methylpropene through an elimination reaction.
Correct Answer:
A
— 2-methylpropene
Learn More →
Q. What is the main product of the thermal decomposition of ammonium dichromate? (2023)
A.
Cr2O3
B.
CrO3
C.
Cr
D.
NH3
Show solution
Solution
The thermal decomposition of ammonium dichromate produces chromium(III) oxide (Cr2O3) as the main product.
Correct Answer:
A
— Cr2O3
Learn More →
Q. What is the main product when 1-bromopropane is treated with alcoholic KOH? (2021)
A.
Propene
B.
1-propanol
C.
2-propanol
D.
Bromopropane
Show solution
Solution
Alcoholic KOH promotes elimination reactions, leading to the formation of propene from 1-bromopropane.
Correct Answer:
A
— Propene
Learn More →
Q. What is the main product when 1-bromopropane is treated with magnesium in dry ether? (2019)
A.
Propane
B.
Grignard reagent
C.
Bromopropane
D.
Propyl alcohol
Show solution
Solution
The reaction of 1-bromopropane with magnesium in dry ether forms the Grignard reagent, propylmagnesium bromide.
Correct Answer:
B
— Grignard reagent
Learn More →
Q. What is the main product when 1-chloropropane is treated with alcoholic KOH? (2019)
A.
Propene
B.
Propan-1-ol
C.
Propan-2-ol
D.
Chloropropane
Show solution
Solution
Alcoholic KOH promotes elimination reactions, leading to the formation of propene from 1-chloropropane.
Correct Answer:
A
— Propene
Learn More →
Q. What is the main product when 1-chloropropane is treated with aqueous KOH? (2019)
A.
Propene
B.
Propan-1-ol
C.
Propan-2-ol
D.
Chloropropane
Show solution
Solution
The treatment of 1-chloropropane with aqueous KOH leads to the formation of propan-1-ol through nucleophilic substitution.
Correct Answer:
B
— Propan-1-ol
Learn More →
Q. What is the main product when 1-chloropropane is treated with excess alcoholic KOH? (2020)
A.
Propene
B.
1-Propanol
C.
2-Propanol
D.
Chloropropane
Show solution
Solution
Excess alcoholic KOH promotes elimination reactions, leading to the formation of propene from 1-chloropropane.
Correct Answer:
A
— Propene
Learn More →
Q. What is the main product when aluminum reacts with hydrochloric acid? (2023)
A.
AlCl3
B.
H2
C.
Al(OH)3
D.
Al2Cl6
Show solution
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 main product when an aldehyde is treated with sodium bisulfite? (2019)
A.
Aldol
B.
Bisulfite adduct
C.
Hydrocarbon
D.
Alcohol
Show solution
Solution
The main product formed when an aldehyde reacts with sodium bisulfite is a bisulfite adduct.
Correct Answer:
B
— Bisulfite adduct
Learn More →
Q. What is the main product when an amine reacts with a carbonyl compound? (2019)
A.
Amide
B.
Alcohol
C.
Aldehyde
D.
Ketone
Show solution
Solution
The main product of the reaction between an amine and a carbonyl compound is an amide.
Correct Answer:
A
— Amide
Learn More →
Q. What is the main product when an amine reacts with a haloalkane? (2019)
A.
Amide
B.
Quaternary ammonium salt
C.
Alcohol
D.
Ester
Show solution
Solution
The main product of the reaction between an amine and a haloalkane is a quaternary ammonium salt.
Correct Answer:
B
— Quaternary ammonium salt
Learn More →
Q. What is the main product when ethene reacts with water in the presence of an acid? (2023)
A.
Ethanol
B.
Ethane
C.
Acetic acid
D.
Ethylene glycol
Show solution
Solution
The reaction of ethene with water in the presence of an acid yields ethanol.
Correct Answer:
A
— Ethanol
Learn More →
Q. What is the main product when hydrogen reacts with oxygen? (2019)
A.
Water
B.
Hydrogen peroxide
C.
Ozone
D.
Hydroxide
Show solution
Solution
When hydrogen reacts with oxygen, the main product formed is water (H2O).
Correct Answer:
A
— Water
Learn More →
Q. What is the main product when propan-2-one is treated with sodium borohydride? (2023)
A.
Propan-1-ol
B.
Propan-2-ol
C.
Propan-3-ol
D.
No reaction
Show solution
Solution
Sodium borohydride reduces propan-2-one to propan-2-ol, which is a secondary alcohol.
Correct Answer:
B
— Propan-2-ol
Learn More →
Q. What is the main product when propanal is treated with sodium bisulfite? (2019)
A.
Sodium propanoate
B.
Propyl sulfonate
C.
Propane-1,2-diol
D.
A bisulfite adduct
Show solution
Solution
Propanal reacts with sodium bisulfite to form a bisulfite adduct, which is a characteristic reaction of aldehydes.
Correct Answer:
D
— A bisulfite adduct
Learn More →
Q. What is the main role of dietary fiber in human health? (2021)
A.
Increase cholesterol
B.
Aid digestion
C.
Provide energy
D.
Enhance taste
Show solution
Solution
Dietary fiber aids digestion by promoting regular bowel movements and preventing constipation.
Correct Answer:
B
— Aid digestion
Learn More →
Q. What is the main source of omega-3 fatty acids? (2021)
A.
Fish oil
B.
Butter
C.
Coconut oil
D.
Olive oil
Show solution
Solution
Fish oil is a rich source of omega-3 fatty acids, which are important for heart health and brain function.
Correct Answer:
A
— Fish oil
Learn More →
Q. What is the major product of the reaction of 1-bromobutane with sodium hydroxide in ethanol? (2019)
A.
Butanol
B.
Butene
C.
Butyl bromide
D.
Sodium bromide
Show solution
Solution
The reaction of 1-bromobutane with sodium hydroxide in ethanol leads to elimination, forming butene as the major product.
Correct Answer:
B
— Butene
Learn More →
Q. What is the maximum number of electrons that can be accommodated in the d subshell? (2019)
Show solution
Solution
The d subshell can hold a maximum of 10 electrons.
Correct Answer:
C
— 10
Learn More →
Q. What is the maximum number of electrons that can be accommodated in the p subshell? (2023)
Show solution
Solution
The p subshell can hold a maximum of 6 electrons.
Correct Answer:
B
— 6
Learn More →
Q. What is the molality of a solution containing 3 moles of solute in 1 kg of solvent? (2022)
A.
3 m
B.
1.5 m
C.
0.5 m
D.
2 m
Show solution
Solution
Molality (m) = moles of solute / kg of solvent = 3 moles / 1 kg = 3 m.
Correct Answer:
A
— 3 m
Learn More →
Q. What is the molality of a solution containing 3 moles of solute in 500 g of solvent? (2021)
A.
6 m
B.
3 m
C.
1.5 m
D.
0.5 m
Show solution
Solution
Molality (m) = moles of solute / kg of solvent = 3 moles / 0.5 kg = 6 m.
Correct Answer:
B
— 3 m
Learn More →
Q. What is the molecular formula of cyclohexane? (2022)
A.
C6H12
B.
C6H10
C.
C6H14
D.
C6H6
Show solution
Solution
Cyclohexane is a cyclic alkane with the formula C6H12.
Correct Answer:
A
— C6H12
Learn More →
Showing 181 to 210 of 626 (21 Pages)
Chemistry (NEET) MCQ & Objective Questions
Chemistry is a crucial subject for students preparing for NEET and other competitive exams in India. Mastering Chemistry (NEET) is essential not only for scoring well but also for building a strong foundation in scientific concepts. Practicing MCQs and objective questions can significantly enhance your exam preparation, allowing you to tackle important questions with confidence.
What You Will Practise Here
Fundamental concepts of Physical Chemistry
Organic Chemistry reactions and mechanisms
Inorganic Chemistry periodic table trends
Stoichiometry and chemical calculations
Equilibrium and thermodynamics principles
Important definitions and key formulas
Diagrams related to chemical structures and reactions
Exam Relevance
Chemistry is a significant part of the syllabus for CBSE, State Boards, NEET, and JEE. In these exams, questions often focus on conceptual understanding and application of theories. You can expect a mix of direct questions, application-based problems, and conceptual MCQs that test your knowledge of key topics. Familiarity with common question patterns will help you navigate the exam more effectively.
Common Mistakes Students Make
Overlooking the importance of units in calculations
Confusing similar concepts in Organic Chemistry
Neglecting to balance chemical equations correctly
Misinterpreting questions that involve multiple steps
Failing to memorize essential definitions and formulas
FAQs
Question: What are the best ways to prepare for Chemistry (NEET) MCQs?Answer: Regular practice of MCQs, understanding core concepts, and revising key formulas are effective strategies.
Question: How can I improve my speed in solving Chemistry (NEET) objective questions?Answer: Time yourself while practicing and focus on familiarizing yourself with common question types.
Start solving practice MCQs today to test your understanding and boost your confidence in Chemistry (NEET). Remember, consistent practice is the key to success!