JAC 12th Chemistry Important Questions [Ch 4] Chemical Kinetics

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JAC 12th Chemistry Important Questions Ch 4 2023: झारखण्ड बोर्ड कक्षा 12th सभी विद्यार्थियों के लिए chemistry में chapter 4 Chemical Kinetics के पिछले वर्षो में जो भी प्रश्न पूछे गए हैं, उनकी चर्चा हम इसमें करेंगे तो इन Important Questions को पढ़ लीजिए.

Jac 12th Chemistry Important Questions
Jac 12th Chemistry Important Questions

रांची: झारखंड एकेडमिक काउंसिल ( JAC Board) कक्षा JAC 12th Chemistry Important Questions के पिछले वर्षों के सभी महत्वपूर्ण प्रश्न (important Questions) आपको यहाँ पर बताए जा रहे है, जो बोर्ड परीक्षा 2023 के लिए बहुत महत्वपूर्ण है. अगर आप इन सभी प्रश्नों को याद कर लेते हो तो अवश्य ही आप JAC Board class 12th Chemistry  exam 2023 में अच्छे अंक प्राप्त कर सकते हो.

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विद्यार्थी इसका उत्तर स्वयं करें। ये सारे प्रश्न आपके परीक्षा (JAC 12th Chemistry Important Questions For Board Exams)में बार – बार पूछे जा रहे है। इसमें आपको सभी chapter का अलग-अलग पिछले 16 से 17 वर्षों के महत्वपूर्ण प्रश्न मिलेंगे। यानि 2006-2022 इसमें आपको ये भी बताया जा रहा है कि कौन से प्रश्न किस तरह से एवं कितने marks के पूछे जा रहें है.

यदि वैसे छात्र छात्राएं जो प्रश्नों के उत्तर नहीं कर पाते हैं, वो कुछ दिन प्रतीक्षा करें. आप यहाँ से Questions-answers download कर सकते हैं.

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JAC 12th Chemistry Important Questions Ch 4-Overview

Name of OrganisationJharkhand Academic Council Ranchi
CategoryImportant Question
ArticleJAC 12th Chemistry Important Questions
StateJharkhand
Question TypesPrevious Year & Important Questions
Class12th(Inter)
StreamScience
SubjectChemistry
Chapter4th Chapter
Chapter NameChemical Kinetics
TelegramJoin Us
Overview

परीक्षा की तैयारी कैसे करें?

परीक्षा की बेहतरीन तैयारी करने के लिए कुछ महत्वपूर्ण बातें को ध्यान में रख कर पढ़ाई करें , ये बातें कुछ इस प्रकार हैं –

  • Study Schedule बनाएं: एक Study schedule बनाए ताकि आप जेएसी(JAC Board) 12वीं रूटीन 2023 की सहायता से पहले ही पूरा syllabus कवर कर सके, परीक्षा से पहले syllabus को पूरा करने से revision के लिए पर्याप्त समय मिलेगा.
  • Short Notes बनाएं: विषयों को important points में सारांशित करके छोटे notes बनाने से Revision भाग को आसान बनाने में मदद मिलेगी, इसके अलावा छात्र विषयों का रिवीजन करने के लिए हर जगह भारी पाठ्य Books ले जाने से बच सकते हैं.
  • परीक्षा से पहले पूरा करें Syllabus : 12वीं के syllabus का पता होना छात्रों के लिए important है क्योंकि इससे महत्वपूर्ण विषयों, परीक्षा की अवधि और अंकन योजना के बारे में जानकारी मिलती है. छात्रों को सलाह दी गई है कि वे 12वीं Routine 2023 जारी होने से पहले पाठ्यक्रम को पूरा कर ले।
  • Previous years Question Papers को हल करें: Previous years Question Papers Class 12th का अभ्यास करना परीक्षा को सफलतापूर्वक पास करने की कुंजी है, तैयारी के स्तर का आत्म विश्लेषण करने के लिए छात्रों को सभी subjects के प्रश्न पत्रों का revision करना चाहिए, इसके अलावा यह students को समय प्रबंधन सीखने और गणना की गति में सुधार करने में भी help कर सकता है.

Also Check –

JAC 12th Chemistry Previous Years Important Questions –

Q1. What is order of reaction? (2006)
Q2. The half life of a radioactive element is 10 minutes. Calculate the decay constant of the radioactive element. (2006, 2008)
Q3. What is the effect of temperature on the rate constant of reaction? How can this temperature effect on the rate constant be represented?(2006)
Q4. What is the rate of constant with respect to A and B reacting species for the reaction 3A→2B? (2007)

Q5. Define half life. Prove that half life of a first order reaction is independent of the initial concentration of the reactant.(2007)
Q6. What the rate equation for the 1st order reaction: (2008)
2N2O5→4NO2+O
Q7. The rate constant of a first order reaction is 60sec-¹. How much time will take it to reduce the initial concentration of reactant of its 1/16th value? (2008)
Q8. Give one example of 1st and 2nd order reaction. (2009)

Q9. Find the value of rate constant of a 1st order reaction having half-life time 50 minutes. (2009)
Q10. Give the unit of the rate of reaction. (2010)
Q11. A first order decomposition reaction takes 40 minutes for 30% decomposition. Calculate its t1/2 value . (2010)
Q12. What is meant by the rate constant k of a reaction? If the concentration is mentioned in mol L-¹ units and time in seconds , what is the unit of.
(a) for a zero order reaction.
(b) for a first order reaction ? (2010)

Q13. Give an example of zero order reaction. (2011)
Q14. What is half life of a radioactive substance? The half life of a radioactive substance is 10 minutes, then calculate the decay constant (λ) of the radioactive substance. (2011)
Q15. A first order reaction has a half life period 34.65 seconds. Its rate constant is : (2012)
a) 2×10-² sec-¹
b) 20 sec-¹
c) 4×10-⁴ sec-¹
d) 2×10-⁴ sec-¹
Q16. If a graph is plotted between Ink and 1/T for the first order reaction. The slope of the straight line so obtained is given by (2012)
a) -Ea/R
b) -Ea/2.303R
c) -2.303/ Ea.R
d) – Ea/ 2.303

Q17. For a reaction, the energy of activation is zero. What is the value of rate constant at 300k ? If k = 1.6 × 10⁶ sec-¹ at 280K and R = 8.31 JK-¹mol-¹. (2012)
Q18. What do you mean by first order reaction and pseudounimolecular reaction . (2006,2013,2016)
Q19. The value of order of reaction can be — (2014)
a) +ve
b) – ve
c) fractional
d) All of These
Q20. For a chemical reaction A→ B , it is found that the rate of reaction does not change when the concentration of of A is doubled. The order of reaction with respect to A is — (2014)
a) 1
b) 2
c) zero
d) 3

Q21. What is half life of a reaction? Find out the value of half life of zero order reaction. (2014)
Q22. For the reaction 2A + B → A2B , rate = k[A][B]2 with K = 2×10-6 mol-²L²s-¹ .Calculate the initial rate of the reaction when [A] = 0.1 mol L-¹ and [B] = 0.2 mol L-¹ . Calculate the rate of reaction after [A] is reduced to 0.06 mol L-¹. (2014)
Q23. Derive integrated rate equation for a first order reaction. (2015)
Q24. The decomposition of NH3 on platinum surface, 2NH3 (g) pt→ N2 (g) + 3H2 (g) is zero order reaction with k = 2.5×10-4 mol L-¹ s-¹ . What are the rates of production of N2 and H2 ?(2015)


Q25. H2 + Cl2 hv→ 2HCl(gas) is — (2016)
a) Second order reaction
b) Zero order reaction
c) First order reaction
d) None of these
Q26. What is order of a reaction ? (2016)
Q27. Describe any three factors which affect the rate of chemical reaction. (2016)
Q28. For the reaction the energy of activation is zero. What is the value of rate constant at 300 K , if K = 1.6 ×10⁶ sec-¹ at 280 K ? (R = 8.31 JK-¹ ) (2016)

Q29. The half Life period of a first order reaction is 100 minutes. Calculate the time required for the reaction to be completed by 90%. (2016)
Q30. Radioactive decay follows the………. kinetics. (2017)
a) Zero order
b) first order
c) Second order
d) nth order

Q31. If the half life of a first order reaction A is 2 minutes, how long will it take A to reach -(2017)
a) 25% of its initial concentration?
b) 10% of its initial concentration?
Q32. For the reaction 2HI →H2 +I2 what is the order of reaction? (2018)

Q33. Unit of rate constant of third order reaction, k is — (2018)
a) s-¹
b) mol-² Ls-¹
c) mol-¹Ls-¹
d) molL-¹ s-¹
Q34. Differentiate between order and molecularity of reaction. (2018)
Q35. Show that for a first order reaction the time required for 99% completion of reaction is twice the time required to complete 90% of the reaction. (2018)
Q36. Rate= K[H2O2 ] is an example of — (2019)
a) Zero order reaction
b) First order reaction
c) Second order reaction
d) None of these

Q37. Calculate the overall order of a reaction which has the rate expression — (2019)
R = K [A]¹ [B]¹
Q38. Explain rate of chemical reaction. (2019)
Q39. Calculate the rate of reaction A+2B → 2C+D. (2020)
Q40. A reaction is of second order with respect to a reactant. How is the rate of reaction affected if the concentration of the reactant is doubled? (2020)

Q41. In a particle reduction process, the concentration of a solution that is initially 0.12 M reduced in 10 hours and 0.06 M in 20 hours. What is the rate constant of the reaction? (2020) (Given : log 2 = 0.3010)

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Jac 12th Chemistry important Questions
JAC 12th Chemistry Important Questions [Ch 4]- FAQ’s

Previous years papers से कितने Questions पूछे जायेंगे?

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यह Previous years का पेपर कब से कब तक का है?

यह Previous years का पेपर 2006 से 2022 तक का है।

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मॉडल पेपर अगले महीने यानि 15 january से पहले आ जाएगा।

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