Chemistry (basic reactions) MCQs for CET 12th Level
Practice 20 free chemistry (basic reactions) multiple choice questions for CET 12th Level exam. Instant answers, explanations in Hindi and English, and topic-wise targeted practice.
Master Chemistry (basic reactions) under Basic Science for CET 12th Level with our curated MCQ set. Every question is sourced from real Rajasthan exam patterns and updated regularly. Switch between Hindi and English anytime. Use this daily to strengthen weak areas before the exam.
CET 12th Level — Basic Science — Chemistry (basic reactions)
20 Questions • Instant results & explanations • Hindi & English
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Question 1 of 20
Makrana marble is classified geologically as a premier metamorphic rock. From which specific pre-existing rock type is it synthesized under extreme tectonic pressure?
Question 2 of 20
In the context of food chemistry, what is the primary consequence of failing to add Butylated Hydroxyanisole (BHA) to a high-fat dietary product?
Question 3 of 20
Which of the following forces is directly responsible for tightly binding the protons and neutrons together within the immensely dense nucleus of an atom?
Question 4 of 20
Assertion (A): Iso-octane is highly suitable as a reference standard for petrol, whereas Hexadecane is the perfect standard for diesel. Reason (R): Iso-octane strongly resists premature ignition in spark engines, while Hexadecane ignites extremely rapidly under high compression.
Question 5 of 20
Identify the chemical category defined strictly as 'organic compounds strategically deployed to intercept and neutralize highly reactive oxygen free radicals':
Question 6 of 20
Which of the following scenarios best illustrates the phenomenon of 'oxidative rancidity'?
Question 7 of 20
Which of the following compounds is chemically formulated as a synthetic sugar substitute specifically to aid in stringent calorie control?
Question 8 of 20
Exposing photosensitive crystalline silver chloride directly to intense sunlight immediately initiates its distinct breakdown into simpler, elemental substances. This is a quintessential, real-world example of:
Question 9 of 20
Assertion (A): The nucleus of an atom remains intact despite the strong electrostatic repulsion between its positively charged protons. Reason (R): The nucleons are tightly bound together by strong nuclear forces, which overpower the electromagnetic repulsion.
Question 10 of 20
Regarding the periodic trend of 'Metallic Nature', identify the correct statement from the following options:
Question 11 of 20
Which of the following environmental phenomena is exclusively catalyzed by the interaction of Ultraviolet (UV) radiation with Volatile Organic Compounds (VOCs) and Nitrogen Oxides?
Question 12 of 20
Given below are two statements, one labeled as Assertion (A) and the other as Reason (R): Assertion (A): Soap becomes ineffective for cleaning when used in hard water. Reason (R): Soap reacts with minerals in hard water to form soluble salts that wash away easily. In the context of the above two statements, which one of the following is correct?
Question 13 of 20
Match List-I (Group Number) with List-II (Key Chemical Characteristic) and choose the appropriate option: List-I A. Group 1 B. Group 17 List-II 1. Overwhelmingly electronegative, readily accepting electrons to form anions. 2. Highly electropositive, readily shedding valence electrons to form cations.
Question 14 of 20
Consider the following statements regarding synthetic food additives: I. Salts of sorbic acid are utilized to intercept oxygen free radicals. II. Sucralose is an artificial sweetener utilized for stringent calorie control. III. BHT aggressively oxidizes dietary fats to preserve their texture. Which of the statements given above is/are definitively incorrect?
Question 15 of 20
The fundamental tendency of an atom to attract shared electrons towards itself in a chemical bond is specifically defined as:
Question 16 of 20
Why do detergents remain highly effective in hard water while traditional soaps fail?
Question 17 of 20
Potash Alum (commonly known as Phitkari) is frequently tested in applied general science examinations. Chemically, what category of substance does Potash Alum belong to?
Question 18 of 20
In chemical nomenclature, what is the specific term used to describe the absolute outermost electron shell of an atom?
Question 19 of 20
Unlike ionic substances, how do pure covalent compounds fundamentally interact at an atomic level to achieve highly stable electronic configurations?
Question 20 of 20