Class 10th Chemistry Objective Question Chemical Reactions |

Class 10th Chemistry Objective Question Chemical Reactions

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[ Class 10th Science Objective & Subjective Question Answer 2023 ] नमस्कार दोस्तों यहां पर बिहार बोर्ड कक्षा दसवीं भौतिक विज्ञान का महत्वपूर्ण चैप्टर ( रासायनिक अभिक्रियाएं एवं समीकरण ( Objective ) Class 10th Science Objective ) दिया गया है साथ ही साथ बिहार बोर्ड कक्षा 10 विज्ञान का मॉडल पेपर ( bihar board class 10 science model paper 2023 ) भी उपलब्ध करवा दिया गया है अगर आप इस बार बिहार बोर्ड कक्षा दसवीं की तैयारी कर रहे हैं rasayanik abhikriya avam samikaran class 10th question answer 2023 तो यह प्रश्न आपके लिए बहुत ही महत्वपूर्ण है क्योंकि यही सब प्रश्न आपके बोर्ड परीक्षा में पूछे जा सकते हैं इसलिए बिहार बोर्ड कक्षा दसवीं का रासायनिक अभिक्रियाएं एवं समीकरण का ऑब्जेक्टिव क्वेश्चन आंसर को जरूर पढ़ें| rasayanik abhikriya avam samikaran ka objective question | rasayanik abhikriya avam samikaran prashn uttar | रासायनिक अभिक्रिया एवं समीकरण क्वेश्चन आंसर, Class 10th रासायनिक अभिक्रिया एवं समीकरण के प्रश्न उत्तर 2023

रसायन विज्ञान एक ऐसा विषय है, जिससे अक्सर सभी प्रतियोगी परीक्षाओं में प्रश्न पूछे ही जाते है, व चाहें एंट्रेंस एग्जाम हो या One Day Exam हो, आज-कल सभी पेपर में रसायन विज्ञान से संबंधित प्रश्न पूछे जाते है | इसो को ध्यान में रख-कर आज हम आप सभी प्रतियोगी विद्यार्थियों के लिए “1000+ रसायन विज्ञान से संबंधित महत्वपूर्ण प्रश्न : 1000 Chemistry GK Question Answer in Hindi” में लेकर आए है | जो आपके विभिन्न परीक्षा की तैयारी करने के बहुत ही उपयोगी एवं महत्वपूर्ण 1000 Chemistry GK Question Answer है | जिसे आप सभी विद्यार्थी निचे दिए गए लेख के माध्यम से विस्तार से पढ़ सकते है |

Chemical Reactions and Equations MCQ Questions Class 10 Science with Answers

Question : What happens when dilute hydrochloric acid is added to iron filling? Tick the correct answer

(a) Hydrogen gas and iron chloride are produced.

(b) Chlorine gas and iron hydroxide are produced

(d) Iron salt and water are produced

Answer : A

Question : A student added dilute HCl to a test tube containing zinc granules and made following observations :

(a) the zinc surface became dull and black

(b) a gas evolved which burnt with a pop sound

(d) the solution becomes green in colour

Answer : B

Question : The reaction of H2 gas with oxygen gas to form water is an example of

(a) combination reaction

(b) redox reaction

(d) all of these reactions

Answer : A

Question : The condition produced by aerial oxidation of fats and oils in foods marked by unpleasant smell and taste is called:

(a) Antioxidation

(b) Reduction

(d) Corrosion

Answer : C

Topic Related Posts

Question : The blue flame in the below image represents the burning of which metal?

(a) Iron

(b) Copper

(d) All metal burn to give a blue flame

Answer : B

Question : In a context of redox reactions, the removal of hydrogen from a substance is known as

(a) Oxidation

(b) Dehydration

(d) Dehydrogenation

Answer : A

Question : Dissolving suger is an example of

(a) Physical change

(b) Chemical change

(d) None of these.

Answer : A

Question. CuSO4 + Zn → Cu + ZnSO4 This reaction is an example of a:

(a) Combination reaction.

(b) Double displacement reaction.

(d) Displacement reaction.

Answer : D

Question. What happens when dilute Sulphuric acid is added to Zn granules? Tick the correct answer.

(a) Hydrogen gas and Zinc chloride are produced)

(b) Chlorine gas and Zinc hydroxide are produced)

(d) Zinc salt and water are produced)

Answer : A

Question. Translate the following statements into chemical equations and then balance it.

Barium chloride reacts with aluminium sulphate to give aluminium chloride and a precipitate of barium sulphate.

(a) BaCl2 + Al2(SO4)3 → AlCl3 + BaSO4

(b) 3BaCl2 + Al2(SO4)3 →2 AlCl3 +3BaSO4

(d) BaCl3 + Al(SO4)3 → AlCl3 + Ba(SO4)3

Answer : B

Question. Identify the type of reaction in each case.

Zinc carbonate(s) → Zinc oxide(s) + Carbon dioxide(g)

Hydrogen(g) + Chlorine(g) → Hydrogen chloride(g)

(a) Combination, Decomposition

(b) Double displacement, Combination

(d) Displacement, Decomposition

Answer : C

Question. The balancing of chemical equations is in accordance with:

(a) Law of combining volumes

(b) Law of constant proportions

(d) Both b and c

Answer : D

Question. Which of the statements about the reaction below are incorrect? Fe2O3(s) + 3CO(g) →2Fe(s) +3CO2(g)

(a) Iron is getting reduced)

(b) Carbon dioxide is getting oxidised)

(d) Iron oxide is getting reduced)

i. a & b

ii. a & c

iii. c & d

iv. all

Answer : C

Question. What type of reaction is respiration

(a) Exothermic

(b) Endothermic

(d) Combination reaction

Answer : A

Question. Identify the substances that are oxidised and the substances that are reduced in the following reactions. CuO(s) + H2(g)→ Cu(s) + H2O(l)

(a) Cu is oxidised, H2O is reduced

(b) CuO is oxidised, H2O is reduced

(d) H2 is oxidised, H2O is reduced

Answer : C

Question9. A solution of a substance ‘X’ is used for white washing. Name the substance ‘X’ and write its formula)

(a) Lime stone, CaCO3

(b) Lime , CaCO3

(d) Calcium carbonate , CaCO3

Answer : C

Question. Write the balanced reaction of Calcium oxide with water and state what type of reaction is this

(a) CaO + H2O→ CaOH + H2, displacement

(b) CaO + H2O → Ca(OH)2, combination

(d) CaO + H2O→ CaOH, combination

Answer : B

Question : The reaction in which two compounds exchange their ions to form two new compounds is –

(a) a displacement reaction

(b) a decomposition reaction

(d) a double displacement reaction

Answer : D

Question : When green coloured ferrous sulphate crystals are heated, the colour of the crystal changes because

(a) it is decomposed to ferric oxide

(b) it loses water of crystallisation

(d) it forms SO3

Answer : B

Question : A compound used for whitewashing is

(a) Quick lime

(b) Slaked Lime

(d) Limestone

Answer : B

Question. When S02 gas is passed through saturated solution of H2S, which of the following reaction occurs? A

(a) SO2 + 2H2S → 2H20 + 3S

(b) SO2 + 2H2S → H20 + 3S

(d) SO2 + H2O → SO3 + H2

Answer : C

Question. Color of magnesium oxide is

(a) White

(b) Blue

(d) Pink

Answer : C

Question. A substance x is an oxide of an group 2 element is used in cement industry. On treatment with water it forms solution which turns red litmus to blue. Identify X ?

(a) Slaked lime

(b) Limestone

(d) Silver sulphide

Answer : C

Question. Which of the following is true for an unbalanced chemical equation?

(a) Number of atoms is equal on both sides of the equation

(b) Number of atoms is less on the left side of the equation

(d) Both (b) and (c).

Answer : D

Question. Which reactant is reduced in given reaction

CuO + H2 → Cu + H2O

(a) Hydrogen

(b) Oxygen

(d) none of the above.

Answer : C

Question. Which of the following does not involve a chemical reaction?

(a) Digestion of food in our body

(b) Process of respiration

(d) Melting of candle wax on heating

Answer : D

Question. The neutralization reaction between an acid and a base is a type of:

(a) Double displacement reaction

(b) Displacement reaction

(d) Decomposition reaction

Answer : A

Question. Which of the following statements about the reaction below are incorrect?

2PbO(s) C(s) ⟶ 2Pb(s) CO2(g)

1. Lead is getting reduced.

2. Carbon dioxide is getting oxidized.

3. Carbon is getting oxidized.

4. Lead oxide is getting reduced.

(a) 1 and 2

(b) 1 and 3

(d) all of the above

Answer : A

Question. On immersing an iron nail in CuSO₄ solution for a few minutes, you will observe

(a) No reaction takes place

(b) The color of solution fades away

(d) The color of solution changes to green

Answer : D

Question. Which of the following is not physical change?

(a) Boiling of water to give water vapour

(b) Melting of ice to give water

(d) Combustion of Liquefied Petroleum Gas (LPG)

Answer : D

Question. The chemical reaction between two substances is characterized by a change in colour from Orange to green. These two substances are most likely to be

(a) Potassium dichromate solution and Sulphur dioxide

(b) Potassium permanganate solution and Sulphur dioxide

(d) Potassium dichromate solution and carbon dioxide

Answer : A

Question. We store silver chloride in a dark coloured bottle because it is

(a) a white solid

(b) undergoes redoc reaction

(d) none of the above

Answer : C

Question. Which substance is used for white washing?

(a) Quick lime

(b) Washing soda

(d) limestone

Answer : A

Question. Which of the following is formed when lead metal reacts with the solution of copper chloride?

(a) No reaction takes place

(b) Copper chlorine

(d) Copper-lead chloride

Answer : C

Question. The respiration process during which glucose undergoes slow combustion by combining with oxygen in the cells of our body to produce energy, is a kind of:

(a) Exothermic process

(b) Endothermic process

(d) Physical process

Answer: A

Question. In a chemical reaction between sulphuric acid and barium chloride solution the white precipitates formed are of:

(a) Hydrochloric acid

(b) Barium sulphate

(d) Sulphur

Answer: B

Question. One of the following processes does not involve a chemical reaction. That is:

(a) Melting of candle wax when heated

(b) Burning of candle wax when heated

(d) Ripening of banana

Answer: A

Question. A chemical reaction does not involve:

(a) Formation of new substances having entirely different properties than that of the reactants

(b) Breaking of old chemical bonds and formation of new chemical bonds

(d) Changing of the atoms of on element into those of another element to form new products

Answer: D

Question. The displacement reaction between iron (III) oxide and a metal X is used for welding the rail tracks. Here X is:

(a) Copper granules

(b) Magnesium ribbon

(d) Aluminium dust

Answer: D

Question. It is necessary to balance a chemical equation in order to satisfy the law of:

(a) Conservation of motion

(b) Conservation of momentum

(d) Conservation of mass

Answer: D

Question. All the methods mentioned below can be used to prevent the food from getting rancid except:

i. Storing the food in the air-tight containers

ii. Storing the food in refrigerator

iii. Keeping the food in clean and covered containers

iv. Always touching the food with clean hands

(a) (i) and (ii)

(b) (i) and (iii)

(d) (iii) and (iv)

Answer: D

Question. Rusting of iron involves a chemical reaction which is a combination of:

(a) Reduction as well as combination reactions

(b) Oxidation as well as combination reactions

(d) Oxidation as well as displacement reactions

Answer: B

Question. You are given the following chemical reaction:

This reaction represents:

(a) Combination reaction as well as double displacement reaction

(b) Redox reaction as well as displacement reaction

(d) Decomposition reaction as well as displacement reaction

Answer: B

Question. When ferrous sulphate is heated strongly it undergoes decomposition to form ferric oxide as a main product accompanied by a change in colour from:

(a) Blue to green.

(b) Green to blue.

(d) Green to yellow.

Answer: C

Question. The chemical reaction between Hydrogen sulphide and iodine to give Hydrogen iodide and sulphur is given below:

The reducing and oxidizing agents involved in this redox reaction are:

(a) Iodine and sulphur respectively

(b) Iodine and hydrogen sulphide respectively

(d) Hydrogen sulphide and sulphur

Answer: B

Question. Which of the following gases is used in the storage of fat and oil containing foods for a long time?

(a) Carbondioxide gas

(b) Nitrogen gas

(d) Neon gas

Answer: B

Question. Following is given a diagram showing an experimental set-up:

The given set-up is used to carry out:

(a) Distillation of water

(b) Purification of water

(d) Hydrolysis

Answer: C

Rasayanik Abhikriya Avam Samikaran ka Objective Question

[ 1 ] निम्न में से कौन अवकारक है?

(A) H2

(B) CO

(D) H2S

Answer-(D)

[ 2 ] श्वसन किस प्रकार की रासायनिक अभिक्रिया है?

(A) उपचयन

(B) संयोजन

(D) ऊष्माशोपी

Answer-[ C ] ऊष्माक्षेपी

[ 3 ] निम्नलिखित में से कौन ऑक्सीकारक है ?

(A) H2

(B) CO

(D) 02

Answer-(D) 02

[ 4 ] रासायनिक समीकरण में जलीय विलयन को किस प्रतीक द्वारा दर्शाया जाता है ?

(A) (s)

(B) (l)

(D) (g)

Answer-(c)

[ 5 ] अभिक्रिया CuO+H→Cu+HO2 किस प्रकार की अभिक्रिया है ?

(A) विस्थापन

(B) अपघटन

(D) उपचयन

Answer-(A) विस्थापन

[ 6 ] समीकरण CaCO3(S) →Cao(s)+CO2(g) किस प्रकार का समीकरण है?

(A) वियोजन

(B) संयोजन

(D) प्रतिस्थापन

Answer-(A) वियोजन

[ 7 ] CI2+ 2KI →2KCI + I2 एक-

(A) संयोजन अभिक्रिया है

(B) द्विविस्थापन अभिक्रिया है

(D) समावयवी अभिक्रिया है

Answer-(C) विस्थापन अभिक्रिया है

[ 8 ] Fe2O3+ 2AI →AI2O3+ 2Fe ऊपर दी गई अभिक्रिया किस प्रकार की है ?

(A) संयोजन अभिक्रिया

(B) द्विविस्थापन अभिक्रिया

(D) विस्थापन अभिक्रिया

Answer-(D) विस्थापन अभिक्रिया

[ 9 ] निम्नलिखित में से कौन-सा उत्पाद लेड नाइटेट को गर्म करने पर प्राप्त होता है?

(A) O2

(B) NO2

(D) NO2 और 02

Answer-(D)

[ 10 ] Cuso4 (aq) + Zn(s) → ZnSO4(aq) + Cu(s) उपरोक्त अभिक्रिया है –

(A) संयोजन अभिक्रिया

(B) विस्थापन अभिक्रिया

(D) अपघटन अभिक्रिया

Answer-(B) विस्थापन अभिक्रिया

Bihar Board Class 10th रासायनिक अभिक्रिया एवं समीकरण Objective Question 2023

[ 11 ] Al(OH)3(s) + 3NHCl (aq) उपरोक्त अभिक्रियाएँ हैं

(A) विस्थापन अभिक्रिया

(B) अपघटन अभिक्रिया

(D) संयोजन अभिक्रिया

Answer-(C) द्वि-विस्थापन अभिक्रिया

[ 12 ] शाक-सब्जियों का विघटित होकर कम्पोस्ट बनना किस अभिक्रिया का उदाहरण है?

(A) ऊष्माशोषी

(B) ऊष्माक्षेपी

(D) प्रतिस्थापन

Answer-(B) ऊष्माक्षेपी

[ 13 ] समीकरण 2Cu + 02 → 2Cu0 में किस प्रकार की अभिक्रिया है ?

(A) अपघटन

(B) ऑक्सीकरण

(D) अवक्षेपण

Answer- (B) ऑक्सीकरण

[ 14 ] द्वि-विस्थापन अभिक्रिया का उदाहरण है

(A) 2KBr(aq) + Cl2(aq)→ 2KCl (aq) + Br2

(B) Fe(s) + S(s)→ FeS(s)

(D) CuSO4(aq) + Fe(s)→ FeSO4 (aq) + Cu(s)

Answer- (c)

[ 15 ] नीचे दी गई अभिक्रिया में कौन-सा कथन असत्य है ?

2Pbo(s) + C (s) → 2Pb(s) + CO2(g)

(i) सीसा अपचयित हो रहा है।

(ii) कार्बन डाइऑक्साइड उपचयित हो रहा है।

(iii) कार्बन उपचयित हो रहा है।

(iv) लेड ऑक्साइड अपचयित हो रहा है।

(A) (i) एवं (ii)

(B) (i) एवं (iii)

(D) सभी

Answer- (A) (i) एवं (ii)

[ 16 निम्नलिखित में कौन-सा पदार्थ ऑक्सीजन से संयोग नहीं करता है ?

(A) ताँबा

(B) गोल्ड

(D) पोटैशियम

Answer-(B) गोल्ड

[ 17 ] अभिक्रिया Cu0+ H2 → Cu+H20 में किसका अपचयन होता है ?

(A) Cuo

(B) H2

(D) H2O

Answer-(B) H2

[ 18 ] उपचयन वह प्रक्रिया है जिसमें –

(A) ऑक्सीजन का योग

(B) हाइड्रोजन का वियोग

(D) सभी

Answer- (D) सभी

[ 19 ] किसी अभिक्रिया में भाग लेने वाले पदार्थ कहलाते हैं

(A) ऑक्सीकारक

(B) अवकारक

(D) प्रतिफल

Answer- (C) अभिकारक

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