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रसायन विज्ञान (Chemistry) – Chemistry MCQ

रसायन विज्ञान (Chemistry) – CEE प्रवेश

Chemistry · Medical Entrance (CEE) – Physics, Chemistry, Biology & MAT · ४१० प्रश्न

सबै विषय भौतिक विज्ञान (Physics) रसायन विज्ञान (Chemistry) जीव विज्ञान – Zoology वनस्पति विज्ञान – Botany MAT (Mental Agility Test)

४१० प्रश्न उपलब्ध। मोड छान्नुहोस्:

रसायन विज्ञान (Chemistry): प्रश्न र उत्तर

सही लागेको विकल्पमा थिच्नुहोस्। सही भए हरियो, गलत भए रातो देखिन्छ; ३ सेकेन्डपछि सही उत्तर र व्याख्या देखिन्छ।

  1. Which of the following statements regarding the hybridisation of carbon atoms in ethyne (C₂H₂) is most accurate? (a) Each carbon atom has sp³ hybridization. (b) Each carbon atom has sp² hybridization. (c) Each carbon atom has sp hybridization. (d) The carbon atoms exhibit resonance structures.

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  2. Plaster of Paris is used in hospitals for making casts to support fractured bones because, when mixed with water, it undergoes rapid hydration and sets into a hard, rigid mass. Which of the following statements BEST explains this process? (a) It reacts vigorously with bone tissue, promoting healing. (b) It forms a strong adhesive bond with the surrounding skin. (c) It undergoes a chemical reaction with water to produce calcium hydroxide and gypsum. (d) It absorbs moisture from the air, increasing its volume and pressure within the fracture site.

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  3. What volume of 0.5 M hydrochloric acid (HCl) is required to completely neutralize 36 grams of magnesium carbonate (MgCO₃)? (Molar mass of MgCO₃ = 84 g/mol)

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  4. Which of the following is NOT a characteristic property of acids?

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  5. The reaction: 2NH₃(g) + O₂(g) → 2NO(g) + H₂O(g) is reversible. If the equilibrium constant Kp for this reaction at a given temperature is 4.5 x 10⁻³, what is the partial pressure of NO in equilibrium with 1 atm NH₃ and 1 atm O₂?

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  6. The dissociation constant (Ka) for a weak acid HA in water is 1.8 x 10⁻⁵. What is the concentration of HA at equilibrium if initially 0.1 M HA was dissolved in water?

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  7. The standard enthalpy of formation of gaseous ammonia (NH₃) at 298 K is -91.8 kJ/mol. Which of the following statements is true regarding this value?

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  8. The following reaction represents a redox process: CH₃COOH + 2N₂O → CO₂ + (CN)₂ + 3H₂O. Which of the following statements accurately describes this reaction?

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  9. Which of the following statements accurately describes the role of a catalyst in a chemical reaction?

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  10. The reaction of ethanol with excess hydrochloric acid produces which of the following products?

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यी अभ्यास प्रश्न हुन्, आधिकारिक प्रश्न होइनन्। पाठ्यक्रम, विज्ञापन र नतिजाका लागि सम्बन्धित निकायको आधिकारिक वेबसाइट हेर्नुहोस्। उत्तरमा गल्ती भेटे प्रश्नमुनिको "टिप्पणी / गल्ती रिपोर्ट" मा लेख्नुहोस्।