Patwari — Chemistry (basic reactions) MCQs
Practice 20 free chemistry (basic reactions) multiple choice questions for Patwari exam. Instant answers with explanations in Hindi and English.
Master Chemistry (basic reactions) under Basic Science for Patwari with our curated MCQ set. Every question follows real Rajasthan exam patterns. Switch between Hindi and English anytime.
Patwari — Basic Science — Chemistry (basic reactions)
20 Questions • Instant results & explanations • Hindi & English
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Question 1 of 20
An unidentified chemical compound conducts electricity highly efficiently, but strictly only when fully dissolved in an aqueous solution. What is its fundamental structural nature?
Question 2 of 20
Analyze the trend of metallic character in the periodic table. Which of the following statements is mathematically or conceptually correct regarding this specific trend?
Question 3 of 20
Which of the following best represents the generic equation for a Single Displacement reaction?
Question 4 of 20
Consider the following statements regarding the placement and general properties of elements in the periodic table: 1. Metals are predominantly positioned on the left and center, and are electropositive in nature. 2. Non-metals are placed on the right side and tend to shed electrons to form cations. 3. Metalloids form a diagonal staircase line separating metals from non-metals. Which of the statements given above is/are correct?
Question 5 of 20
What is the primary difference in the environmental outcome when a straight-chain carboxylic acid salt versus a highly branched alkyl sulfate is released into a river system?
Question 6 of 20
In the process of artificial ripening of fruits using calcium carbide, what is the exact solid chemical byproduct that is formed alongside the release of the active acetylene gas?
Question 7 of 20
What is the primary objective of creating a homogenous solid solution of a primary metal blended with secondary non-metals?
Question 8 of 20
Consider the following statements regarding the physical properties of Isotopes: I. They have identical chemical properties due to the same electron configuration. II. They possess differing physical properties due to their variance in mass. Which of the statements given above is/are definitively correct?
Question 9 of 20
Match the specific branches of chemistry in List-I with their corresponding primary areas of study in List-II: List-I: A. Physical Chemistry B. Organic Chemistry C. Inorganic Chemistry List-II: 1. Study of Carbon 2. Study of Ores 3. Study of Kinetics Choose the correct code:
Question 10 of 20
Match List-I (Rajasthan Mine/Location) with List-II (Extracted Ore) and select the correct code: List-I a. Khetri Belt (Jhunjhunu) b. Zawar Mines (Udaipur) List-II 1. Zinc Blende ($ZnS$) 2. Chalcopyrite ($CuFeS_2$)
Question 11 of 20
When Calcium carbide is exposed to atmospheric moisture for the artificial ripening of fruits, it undergoes a hydrolysis reaction. Which of the following equations accurately represents this process?
Question 12 of 20
Assertion (A): Water (H2O) is scientifically classified as a compound rather than a mixture. Reason (R): In water, hydrogen and oxygen elements are chemically combined together in a highly specific and fixed mass ratio.
Question 13 of 20
Consider the following statements regarding Buffer Solutions: 1. They resist drastic changes in pH. 2. Their function is termed as buffering action. 3. They only exist to maintain pH strictly at 7. Which of the statements given above is/are correct?
Question 14 of 20
What primary scientific phenomenon does the systematic grid arrangement of the Modern Periodic Table visually explain and highlight?
Question 15 of 20
An Acidic Buffer is chemically formulated by blending:
Question 16 of 20
Ethyl mercaptan is meticulously infused into industrial Liquefied Petroleum Gas (LPG) supplies strictly as a vital safety measure. What inherent physical property of the primary LPG constituent gases (butane and propane) absolutely necessitates this chemical additive?
Question 17 of 20
Siderite, a prominent geological ore utilized extensively for the extraction of iron, chemically belongs to which specific class of mineral compounds?
Question 18 of 20
What are the universal and chemically invariable products synthesized during a standard neutralization reaction?
Question 19 of 20
Which class of chemical compounds acts upon indicators to typically turn red litmus paper blue?
Question 20 of 20
What happens when a small amount of strong acid is added to a mixture of Acetic Acid and Sodium Acetate?
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