chemical reaction and equation class 10 important mcq


  • आप सभी विद्यार्थियों को हमारे इस ब्लॉग में स्वागत है दोस्तों आज इस ब्लॉक में हम जानने वाले है chemical reaction and equation class 10 important mcq  के बारे में

  • हजारों लाखों विद्यार्थियों की भीड़ में से आगे बढ़ने और बोर्ड एग्जाम में अच्छे नंबर लाने के लिए हमें एक ऐसा तरीका अपनाना  होगा जो हमे अन्य सभी विद्यार्थियों की तैयारी करने के तरीके से अलग करता हो  इसके लिए एक महत्वपूर्ण तरीका board exam previous year question class 10 का अपनाएंगे जो मेरे आनुसार आप की तैयारी के लिए बेहद महत्वपूर्ण है |

दोस्तों इस ब्लॉग में आपको बोर्ड एग्जाम 2010 से 2023 तक के Questions बताए गए हैं जो आपकी एग्जाम की दृष्टि से बहुत ही महत्वपूर्ण है तो गुरु हो जा शुरू

      ना मेहनत ना संघर्ष तो क्या खाक मजा है जीने में अरे बड़े-बड़े तूफान ही थम जाते हैं जब आग लगी हो सीने मे

इसलिए दोस्तों लगातार मेहनत करते रहिए संघर्ष करिए आपको सफलता जरूर मिलेगी | वक्त बदलता है वक्त बदलेगा सारा जहां होगा अपना

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chemical reaction and equation class 10 previous year questions (रासायनिक अभिक्रियाएं एवं समीकरण)

1 निम्न की परिभाषा लिखते हुए एक-एक उदाहरण दीजिए-

(ए) संयोजन अभिक्रिया (बी) ताप अपघटन अभिक्रिया (सी) विस्थापन अभिक्रिया

Write the definition of the following and give one example of each definition

(a) Combination reaction (b) Thermal decomposition reaction (c) Displacement reaction

2 भौतिक व रासायनिक परिवर्तन किसे कहते है? उदाहरण सहित समझाइए |

What is physical and chemical change? Explain with example

3 ऑक्सीकारक व अपचायक को इलेक्ट्रान धारणा से समझाइए |

Explain oxidizer and reducing agent with electron perception

4 विस्थापन व द्विविस्थापन अभिक्रिया में अंतर बताइए

Differentiate between displacement and double displacement reaction

5 मेथेन के दहन का संतुलित रासायनिक समीकरण लिखिए

Write a balanced chemical equation for combustion of methane

6 निम्न समीकरण मे xyz को पहचानिए-

Identify xyz in the following equation –

  • Cu + CO2 ———– हरा पदार्थ(x)
  • Ag  +  y ——— काला पदार्थ (Ag2S)
  • FeSO4 ———- Fe2O3 + SO3 + z

7 क्या होता जब (What happens when) –

(अ) CuSO4 + Fe ——— ?

(ब) Zn + H2SO4 ———- ?

(स) Na + O2 ———- ?

8 (a) ऑक्सीकरण व अपचयन अभिक्रिया में एक अंतर लिखिए

Write one difference between oxidation and reduction reaction

9 जल के वैधुत अपघटन का नामांकित चित्र बनाइए

Draw a labelled diagram of electrolysis of water

10 रेडॉक्स अभिक्रिया की परिभाषा व उदाहरण बताइए

Describe the definition and examples of redox reaction

11 जिंक की सल्फ्यूरिक अम्ल से क्रिया करने पर गैस X बनती है –

Gas X is formed when zink reacts with sulphuric acid –

(a) गैस x का नाम बताइए (Name gas x)

(b) अभिक्रिया का समीकरण लिखिए (Write the equation of the reaction)

(c) गैस की पहचान कैसे करेंगे (How to identify gas?)

12 बिना बुझे हुए चूने एवं जल की संयोजन अभिक्रिया बताइए

Describe the combination reaction   of quick lime and water

13 वसायुक्त खाद्य पदार्थों को विकृतगंधीता से बचाने के लिए क्या किया जाता है ?

What is done to protect fatty foods from rancidity

यह भी जाने – पढ़ा हुआ जल्दी याद करने के 10 आसान तरीके 

यह भी जाने –पढ़ते समय नींद को कैसे भगाये 8 आसान तरीके

14(A) मैग्नीशियम रिबन वायु में दहन कर वॉच ग्लास में इकट्ठा होने वाले उत्पाद का नाम सहित नामांकित चित्र बनाइए |

Make a labeled diagram along with name of the product formed when magnesium ribbon burns in air and gets collected in a watch glass ?

(B)   CuO + H2 ———-  Cu + H2O मे किस पदार्थ का उपचयन व किस पदार्थ

का अपचयन हो रहा है (Which substance is being oxidize and which substance is being reduced)

15 निम्न रासायनिक समीकरण में (In the following chemical equation) –

  • (a) C + O2 ——– CO         ——(1)
  • (b) 2H2O ———- 2H2 + O2     ——-(2)

(अ) रासायनिक समीकरण 1 व 2 को पहचान कर अभिक्रिया प्रकार लिखिए |

Identify chemical equations 1 and 2 and write the reaction type.

(ब) रासायनिक समीकरण 1 व 2 में अंतर लिखिए |

Write the difference between chemical equations 1 and 2

16 (a) ऑक्सीकरण(उपचयन) व अपचयन अभिक्रिया को उदाहरण सहित समझाइए |

Explain oxidation and reduction reactions with examples

(b) निम्न रासायनिक समीकरण को संतुलित कीजिए

(Balance the following chemical equation)

  • NH3 + CuO ——— Cu + N2 + H2
  • NaOH + H2SO4 ——— NaSO4 + H2O
  • Pb(NO3)2 ——– PbO + NO2 + O2

(c) वातावरण में चांदी के ऊपर काली परत चढ़ाने की प्रक्रिया क्या कहलाती है ?

What is the process of blackening silver in the atmosphere called?

17 (a) चुने के पानी पर कार्बन डाई ऑक्साइड गैस प्रवाहित कर ने पर यौगिक A का श्वेत अवक्षेप बनता है इसमे अत्यधिक मात्रा मे CO2 गैस की जाये तो जल मे विलेयशील पदार्थ B बनता है | A तथा B के रासायनिक सूत्र तथा निहित रासायनिक समीकरण लिखीए |

When carbon dioxide gas is passed on lime water, a white precipitate of compound A is formed, if an excessive amount of CO2 gas is added to it, then soluble substance B is formed in water. Write the chemical formulae and the chemical equations contained in A and B.

(b)अवक्षेपण अभिक्रिया से आप क्या समझते है उदाहरण सहित समझाइए ?

Explain with examples what you understand by precipitation reaction

18  2Mg + O2 ———-  ? अभिक्रिया को पूर्ण कीजिए (Complete the reaction)

19 (i) निम्न की परिभाषा उदाहरण सहित बताइए-

Explain the definition of the following with examples

(a) द्विविस्थापन (Double displacement) (b) विस्थापन (Displacement)

(c) रेडॉक्स(Redox) (d) तापीय अपघटन (Thermal decomposition)

(ii)निम्न मे A को पहचानिए(Identify A from the following) :-

(a) Zn + CuSO4 ———- A + Cu (b) Na2SO4 + BaCl2 ——- A + 2NaCl

20 निम्न अभिक्रियाओ के लिए उनकी अवस्था के संकेतों के साथ संतुलित रासायनिक समीकरण लिखिए –

(a) जल मे बेरियम क्लोराइड तथा सोडियम सल्फैट के विलियन अभिक्रिया करके सोडीयम

क्लोराइड का विलियन तथा अघुलनशील बेरीयम सल्फैट का अवक्षेप बनाते है |

(b) तनु सल्फ्यूरिक अम्ल ऐलुमिनियम चूर्ण के साथ अभिक्रिया करता है |

Write a chemical equation balanced with the signs of their state for the following reactions :-

(a) Sodium of barium chloride and sodium sulphate in water react to give insoluble barium sulphate and the solution of sodium chloride

(b) Dilute sulphuric acid react with aluminium powder.

21 दानेदार जिंक के टुकड़ों के साथ तनु सल्फ्यूरिक अम्ल की रासायनिक अभिक्रिया लिखिए और चित्र भी बनाइए

Write the chemical reaction of dilute sulphuric acid with granular zinc fragments and also draw a diagram

22 संयोजन  अभिक्रिया को वियोजन अभिक्रिया के विपरीत क्यों कहा जाता है| इन अभिक्रियों के लिए समीकरण लिखिए |

Why is a combination reaction called the opposite of a decomposition reaction? Write the equations for these reactions.

धन्यवाद दोस्तों अंत में मैं यही कहना चाहूंगा कि यदि आप बोर्ड एग्जाम में सफलता पाना चाहते हैं और अच्छे नंबर लाना चाहते हैं तो आपको परीक्षा के पैटर्न को समझना होगा और पिछले 5-10 वर्षों में आए प्रश्न पत्रों को भी देखना होगा तभी आप सभी से अच्छे नंबर ला सकते और सफलता प्राप्त कर सकते हैं |

मेरी शुभकामनाएं आप सभी के साथ है |

यदि आपको और कुछ कहना है या फिर कुछ पूछना है तो आप कमेंट कर सकते हैं और कमेंट करके यह भी बता सकते हैं कि हमारे इस लेख में क्या कमी है |

 

 

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