Chemistry (basic reactions) MCQs for CET 12th Level
Practice 20 free Chemistry (basic reactions) questions under Basic Science — Science & Tech.
Strengthen your Chemistry (basic reactions) knowledge for CET 12th Level with curated MCQs. 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
Why is pure elemental iron frequently subjected to 'Galvanization' in industrial applications?
Question 2 of 20
Given below are two statements, one labeled as Assertion (A) and the other as Reason (R): Assertion (A): Synthetic detergents can cause severe environmental water pollution. Reason (R): All synthetic detergents form insoluble scum in aquatic ecosystems. In the context of the above two statements, which one of the following is correct?
Question 3 of 20
Assertion (A): Mastering basic chemistry with conceptual clarity is considered a decisive factor for achieving top-tier ranks in modern competitive examinations. Reason (R): Examination paradigms have intentionally shifted away from mere rote memorization to heavily test scientific reasoning and the practical application of chemical phenomena.
Question 4 of 20
During the thermal decomposition of baking soda, which specific gas is released that is fundamentally responsible for making cakes soft and fluffy?
Question 5 of 20
During the chemical reaction ZnO + C → Zn + CO, which substance undergoes oxidation?
Question 6 of 20
The famous Makrana region is primarily associated with the abundant geological presence of which of the following chemical compounds?
Question 7 of 20
Assertion (A): Methane undergoes much cleaner combustion than heavier fossil fuels. Reason (R): Methane has the highest carbon-to-hydrogen ratio among all aliphatic hydrocarbons.
Question 8 of 20
What is the primary function of a 'Buffer Solution' in chemical applications?
Question 9 of 20
Sodium (Na) has an atomic number of 11. Which of the following accurately describes its path to achieving chemical stability and its resulting valency?
Question 10 of 20
What precisely happens to the effective nuclear charge and the resulting hold on electrons as one moves from left to right across a single period in the periodic table?
Question 11 of 20
Why is cellular respiration chemically categorized as an exothermic process?
Question 12 of 20
What is the correct chemical formula for the copper ore Malachite?
Question 13 of 20
Match the fundamental atomic descriptors in List-I with their accurate mathematical derivations in List-II: List-I: A. Atomic Number (Z) B. Mass Number (A) C. Number of Neutrons List-II: 1. A minus Z 2. Protons plus Neutrons 3. Equals the number of Protons Choose the correct code:
Question 14 of 20
Identify the correct chemical reaction equation that illustrates the formation of scum when traditional soap reacts with hard water.
Question 15 of 20
Which specific dissolved ions are primarily responsible for chemically characterizing water as 'hard water'?
Question 16 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 17 of 20
Match List-I with List-II and select the correct answer using the codes given below: List-I (Chemical Agent) A. Saccharin B. BHA C. Detergent D. Soap List-II (Defining Feature) 1. Intercepts reactive oxygen free radicals 2. Sodium salts of sulfonic acids 3. Synthetic chemical sugar substitute 4. Forms insoluble scum in hard water
Question 18 of 20
What is the primary indicator that a substance is chemically basic when tested with litmus paper?
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