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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. The enthalpy change (ΔH) for a reaction is negative. What does this indicate about the heat flow during the reaction?

    💬 टिप्पणी / गल्ती रिपोर्ट (०)

    टिप्पणी जाँचपछि मात्र देखिन्छ।

  2. The hydrolysis of which of the following esters will produce acetic acid? a) Ethyl acetate b) Methyl propanoate c) Propyl formate d) Butyrate

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    टिप्पणी जाँचपछि मात्र देखिन्छ।

  3. Which of the following reactions demonstrates an exothermic process? a) Decomposition of calcium carbonate to form calcium oxide and carbon dioxide. b) Neutralization reaction between a strong acid and a strong base. c) Formation of ammonia from nitrogen and hydrogen gases. d) Dissolution of sodium chloride in water.

    💬 टिप्पणी / गल्ती रिपोर्ट (०)

    टिप्पणी जाँचपछि मात्र देखिन्छ।

  4. The standard enthalpy of formation (ΔH°f) of an element in its most stable state is defined as: a) The heat released when one mole of the element reacts with oxygen. b) The heat absorbed when one mole of the element is formed from its constituent elements under standard conditions. c) The heat required to vaporize one mole of the element. d) The change in enthalpy during any chemical reaction involving only that element.

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    टिप्पणी जाँचपछि मात्र देखिन्छ।

  5. Which of the following statements best describes Le Chatelier's principle? a) A system at equilibrium will shift in any direction if heat is added. b) A system at equilibrium, when subjected to a stress (e.g., change in concentration or pressure), will adjust itself to minimize the stress. c) The rate of a chemical reaction always increases with increasing temperature. d) Equilibrium constants are solely determined by the initial concentrations of reactants and products.

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    टिप्पणी जाँचपछि मात्र देखिन्छ।

  6. Which of the following reagents would react with aldehydes to form a carbon-carbon bond?

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  7. Which of the following combinations would result in an increase in the rate of a chemical reaction?

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  8. The titration of a monoprotic acid with a strong base will exhibit a steep change in pH near which point?

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    टिप्पणी जाँचपछि मात्र देखिन्छ।

  9. Which of the following compounds exhibits hydrogen bonding? (a) Methane (CH₄) (b) Ethanol (C₂H₅OH) (c) Carbon dioxide (CO₂) (d) Water (H₂O)

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  10. The reaction between hydrochloric acid (HCl) and sodium carbonate (Na₂CO₃) produces carbon dioxide gas, water, and sodium chloride. Which of the following is the primary evidence demonstrating that a chemical reaction has occurred?

    💬 टिप्पणी / गल्ती रिपोर्ट (०)

    टिप्पणी जाँचपछि मात्र देखिन्छ।

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।