NEET Chemistry: General methods of preparation properties reactions and uses Practice Questions
11 free multiple-choice questions on General methods of preparation properties reactions and uses (Nitrogen Compounds) for NEET Chemistry, each with the correct answer and a step-by-step explanation. Attempt a question, then reveal the solution to check your reasoning.
Practice thousands more NEET questions in the app →Q1. Which of the following compounds is the simplest stable inorganic nitrogen-containing molecule used industrially in the preparation of ammonia?
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Correct answer: A — Nitrogen gas (N2)
Ammonia (NH3) is the key compound produced by the Haber process and is the primary feedstock for most nitrogen-based industrial processes.
Q2. The primary role of nitrogen in forming complex organic molecules, as seen in compounds like proteins and DNA, is primarily related to which feature?
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Correct answer: C — Ability to form multiple covalent bonds and complex structures
Nitrogen's ability to form three bonds (and often multiple bonds) with other atoms allows it to form the extensive and complex structural motifs characteristic of biomolecules.
Q3. Which salt is commonly known as fertilizer and is prepared by the reaction of ammonia with a strong acid?
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Correct answer: B — Ammonium Nitrate
Ammonium salts (like ammonium nitrate or sulfate) are formed by reacting ammonia with mineral acids (like HNO₃ or H₂SO₄).
Q4. Which of the following is the primary product obtained when ammonia is reacted with hydrogen chloride under specific conditions to form a simple amine?
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Correct answer: D — Ethylamine
The reaction of ammonia with hydrogen chloride typically leads to the formation of an ammonium salt, which is a basic compound. While specific reactions vary, the focus here is on the general properties and reactions involving ammonia derivatives. (The options provided test basic knowledge of amine derivatives.)
Q5. Which type of nitrogen compound generally exhibits basic character due to the presence of a lone pair of electrons on the nitrogen atom?
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Correct answer: A — Amines
Amines contain a nitrogen atom with a lone pair of electrons, making them capable of accepting protons, thus exhibiting basic properties.
Q6. The method primarily used for the industrial synthesis of ammonia (NH₃) from nitrogen and hydrogen under high temperature and pressure is known as:
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Correct answer: A — Haber process
The Haber process is the established industrial method for synthesizing ammonia from nitrogen and hydrogen gases.
Q7. What is the functional group characteristic that distinguishes primary amines from secondary amines?
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Correct answer: C — Presence of an -NH₂ group
Primary amines (R-NH₂) have at least one hydrogen atom attached to the nitrogen, whereas secondary amines (R₂NH) have two alkyl groups attached to the nitrogen.
Q8. Which of the following nitrogen compounds is commonly used as a source of Nitrogen in the preparation of dyes?
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Correct answer: D — Nitrites
Nitrites (NO₂⁻) are important precursors used in the synthesis of various azo dyes, often through reactions involving diazotization.
Q9. Which of the following compounds exhibits a high degree of basicity due to the availability of the lone pair on the nitrogen atom in its structure?
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Correct answer: D — NH₃
Ammonia (NH₃) is a weak base that readily accepts a proton (H⁺) from water to form the ammonium ion (NH₄⁺), thus demonstrating basic properties. The lone pair on the nitrogen atom makes it readily available for bonding/proton acceptance.
Q10. The property of nitrogen compounds that makes them basic is primarily due to:
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Correct answer: A — Presence of lone pair on nitrogen
Nitrogen possesses a lone pair of electrons, which is readily available to accept a proton (H⁺), making nitrogen-containing compounds (like amines) basic.
Q11. The reaction of an amide with water results in the formation of which type of compound?
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Correct answer: B — Carboxylic acid
Amides (RCONH₂) react with water to form carboxylic acids (RCOOH) and ammonia, a process known as hydrolysis.
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