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CET 12th Level — Chemistry (basic reactions) MCQs

Practice 20 free chemistry (basic reactions) multiple choice questions for CET 12th Level exam. Instant answers with explanations in Hindi and English.

Master Chemistry (basic reactions) under Basic Science for CET 12th Level with our curated MCQ set. Every question follows real Rajasthan exam patterns. Switch between Hindi and English anytime.

CET 12th Level — Basic Science — Chemistry (basic reactions)

20 Questions • Instant results & explanations • Hindi & English

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Question 1 of 20

The pristine white appearance and extraordinary structural integrity of Makrana marble over centuries are geologically attributed to the near-total absence of which specific element, an element that typically causes rocks to rust or yellow?

Question 2 of 20

Why is cellular respiration chemically categorized as an exothermic process?

Question 3 of 20

A diabetic patient requires a sugar substitute that provides sweetness without adding calories. Which of the following synthetic chemicals is appropriate for their diet?

Question 4 of 20

Which of the following compounds forms an essential part of the buffer system that maintains the physiological pH of human blood?

Question 5 of 20

The paradigm of 'Green Chemistry' fundamentally focuses on designing innovative products and chemical processes that minimize or entirely eliminate the use and generation of hazardous substances. It is considered a critical, forward-looking subset of:

Question 6 of 20

Assertion (A): Cations are characteristically formed primarily by non-metal atoms. Reason (R): Non-metal atoms have a strong thermodynamic tendency to gain electrons to complete their stable octet.

Question 7 of 20

The Sambhar Salt Lake, located in Rajasthan, produces a unique alkaline brine. Which of the following sodium compounds is naturally abundant in this brine?

Question 8 of 20

Assertion (A): Elements are pure substances that consist of only a single type of atom. Reason (R): The atoms within an element share the exact same atomic number, retaining identical chemical properties.

Question 9 of 20

The physiological conversion of complex starches and robust proteins into simple glucose molecules and free amino acids within the human body represents:

Question 10 of 20

What specifically distinguishes a strong acid from a weak acid in an aqueous environment?

Question 11 of 20

The Atomic Number (Z) of any element is singularly determined by the total number of which of the following subatomic particles present in its atom?

Question 12 of 20

Match the fundamental subatomic particles with their respective electrical charges: List-I (Particle): A. Proton B. Neutron C. Electron List-II (Charge): 1. Negative 2. Positive 3. Neutral (Zero charge) Choose the correct code:

Question 13 of 20

The Modern Periodic Table is universally accepted as the ultimate organizational tool for chemists. What is the foundational physical law that dictates the sequential arrangement of elements within it?

Question 14 of 20

Consider the following diverse physical and chemical phenomena: 1. The rapid evolution of a distinct gas 2. Measurable, dramatic changes in ambient temperature 3. The spontaneous formation of an insoluble solid precipitate 4. Reversible melting from a solid to a liquid phase Which of these manifestations serve as definitive, diagnostic indicators of a chemical reaction occurring?

Question 15 of 20

How does the specific behavior of electrons in metals structurally prevent them from shattering when subjected to intense physical stress?

Question 16 of 20

Which of the following describes the fundamental mechanism of a buffer solution?

Question 17 of 20

Consider the following statements: I. Jams and carbonated drinks are frequently preserved using Sodium Benzoate. II. Sodium Benzoate is highly effective in intercepting reactive oxygen free radicals. Which of the above statements is/are correct?

Question 18 of 20

Consider the following statements regarding synthetic food additives: I. Aspartame provides intense sweetness and is used for strict calorie control. II. Butylated Hydroxyanisole prevents oxidative rancidity in fats. III. Sodium Benzoate intercepts reactive oxygen free radicals in acidic foods. Which of the above statements are correct?

Question 19 of 20

What is the primary objective of creating a homogenous solid solution of a primary metal blended with secondary non-metals?

Question 20 of 20

Organometallic compounds represent an incredibly important class of materials with highly specialized industrial and catalytic applications. Based on the fundamental definition of elemental chemistry, the structural study of these compounds is placed under:

More Basic Science Subtopics

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