Chemical Reactions And Equations MCQs | Class 10 Science Chapter 1 Quiz

WhatsApp Group Join Now

Telegram Group Join Now

Are you preparing for CBSE Class 10 Science Chapter 1 – Chemical Reactions and Equations? Test your knowledge with these MCQs based on the latest NCERT syllabus. This quiz will help you revise important concepts like types of chemical reactions, balancing equations, and oxidation-reduction reactions. Attempt the quiz now and check your score instantly!

Key Benefits:

📚 Based on the latest CBSE syllabus & NCERT book
✅ Instant answers & explanations for each question
🏆 Leaderboard feature to compete with friends
🎯 Covers important questions for board exams

Class 10 Science Chapter 1 Chemical Reactions and Equations MCQs

Chapter 1: Chemical Reactions and Equations

1 / 15

Which of the following reaction(s) is an endothermic reaction?

Process of respiration

Decomposition of calcium carbonate to form quick lime and carbon dioxide.

Decomposition of vegetable matter into compost

Burning of coal

2 / 15

Identify the endothermic reaction(s) among the following:

1. 6CO₂ + 12H₂O → C₆H₁₂O₆ + 6O₂ + 6H₂O

1. Na₂CO₃ + 2HCl → 2NaCl + CO₂ + H₂O

1. C₆H₁₂O₆ + 6O₂ → 6CO₂ + 6H₂O

1. CaCO₃ → CaO + CO₂

Only 1

Only 2 and 3

Only 4

Only 1 and 4

3 / 15

Electrolysis of water is a decomposition reaction. The mole ratio of hydrogen and oxygen gases liberated during the electrolysis of water is

1:1

4:1

2:1

1:2

4 / 15

Which of the following are exothermic processes?

Reaction of water with quick lime
Dilution of an acid
Evaporation of water
Sublimation of camphor (crystals)

3 and 4

1 and 2

1 and 4

2 and 3

5 / 15

Assertion (A): A white-washed wall develops a coating of calcium carbonate after a few days.

Reason (R): Calcium oxide on the wall reacts slowly with carbon dioxide in the air.

Both (A) and (R) are true and (R) is the correct explanation of the assertion.

(A) is false, but (R) is true.

Both (A) and (R) are true, but (R) is not the correct explanation of the assertion.

(A) is true, but (R) is false

6 / 15

Assertion (A): In the reaction: MnO₂ + 4HCl → MnCl₂ + 2H₂O + Cl₂

HCl is getting oxidized while MnO₂ is getting reduced.

Reason (R): The process in which oxygen is added to a substance is called oxidation whereas the process in which oxygen is removed from a substance is called reduction.

(A) is true, but (R) is false

Both (A) and (R) are true and (R) is the correct explanation of the assertion.

Both (A) and (R) are true, but (R) is not the correct explanation of the assertion.

(A) is false, but (R) is true.

7 / 15

Which of the following statements about the given reaction are correct?

3Fe + 4H₂O → Fe₃O₄ + 4H₂

1. Iron metal is getting oxidized.

1. Water is getting reduced.

1. Water is acting as a reducing agent.

1. Water is acting as an oxidizing agent.

3 and 4

2 and 4

1, 2, and 4

1, 2, and 3

8 / 15

Solid calcium oxide reacts vigorously with water to form calcium hydroxide accompanied by the liberation of heat. This process is called slaking of lime. Which among the following is/are true about slaking of lime?

1. It is an endothermic reaction.

1. It is an exothermic reaction.

1. The pH of the resulting solution will be more than seven.

Also See: Forest and Wildlife Resources Class 10 Notes: Everything You Need to Know

1. The pH of the resulting solution will be less than seven.

1 and 2

1 and 4

3 and 4

2 and 3

9 / 15

A small amount of copper powder is heated as shown in the figure.

chemical reactions and equations class 10

Which reaction shows the above reaction?

CuO + H2 → Cu + H2O

None of the above

2Cu + O2 → 2CuO

4Cu + O2 → 2Cu2O

10 / 15

Assertion (A): While equalizing the number of atoms to balance a chemical equation, we alter the formula of the compounds or elements involved in the reaction.

Reason (R): A chemical equation is balanced by making the number of atoms of each element equal on both sides of the arrow.

(A) is false, but (R) is true.

Both (A) and (R) are true, but (R) is not the correct explanation of the assertion.

(A) is true, but (R) is false

Both (A) and (R) are true and (R) is the correct explanation of the assertion.

11 / 15

Assertion (A): Following is a balanced chemical equation for the action of steam on iron:

3Fe + 4H₂0 → Fe₃O₄ + 4H₂

Reason (R): The law of conservation of mass holds good for a chemical equation.

Both (A) and (R) are true and (R) is the correct explanation of the assertion.

(A) is true, but (R) is false

Both (A) and (R) are true, but (R) is not the correct explanation of the assertion.

(A) is false, but (R) is true.

12 / 15

Identify the product which represents the solid state in the above reaction.

chemical reactions and equations questions

Barium chloride

Sodium chloride

Barium sulphate

Sodium sulphate

13 / 15

Sunita takes about 2 g ferrous sulphate crystals in a dry boiling tube and heats the boiling tube over the flame of a burner or spirit lamp as shown in the figure.

chemical reactions and equations questions and answers

The color of crystals after heating is:

Green

Brown

Orange

Black

14 / 15

You are given the solution of lead nitrate. In order to obtain a yellow precipitate you should mix with it a solution of ______.

Potassium nitride

Potassium chloride

Potassium iodide

Potassium sulphide

15 / 15

The silver chloride is placed under the sunlight as shown in the figure. The color of silver chloride after some time is:

chemical reactions and equations questions and answer

Yellow

Grey

Black

Green

Your score is

The average score is 57%

Did you enjoy this quiz? Share your score in the comments!

Want more MCQs? Check out our full Class 10 Science Quiz Series!

Leaderboard

Pos.	Name	Score	Duration	Points
1	Kushwaha ji	100 %	40 seconds	15
2	govind	100 %	40 seconds	15
3	No 1	100 %	42 seconds	15
4	Bhim Singh	100 %	43 seconds	15
5	Chhavi	100 %	45 seconds	15
6	Kushwaha ji	100 %	49 seconds	15
7	Gauri	100 %	50 seconds	15
8	Jat	100 %	50 seconds	15
9	RAICHEL	100 %	1 minutes	15
10	Raichu	100 %	1 minutes 7 seconds	15
11	Abhinav S Ram	100 %	1 minutes 7 seconds	15
12	Sam	100 %	1 minutes 12 seconds	15
13	Name	100 %	1 minutes 12 seconds	15
14	T	100 %	1 minutes 34 seconds	15
15	Mahek	100 %	1 minutes 36 seconds	15
16	Saee Pawar	100 %	1 minutes 42 seconds	15
17	nh	100 %	1 minutes 51 seconds	15
18	X	100 %	1 minutes 52 seconds	15
19	Prince	100 %	1 minutes 56 seconds	15
20	Pooja	100 %	1 minutes 59 seconds	15
21	T	100 %	2 minutes	15
22	jiya	100 %	2 minutes 6 seconds	15
23	Rakshit	100 %	2 minutes 33 seconds	15
24	Nishant pal	100 %	2 minutes 45 seconds	15
25	tanu	100 %	3 minutes 1 seconds	15
26	Shoaib haidar	100 %	3 minutes 9 seconds	15
27	gg	100 %	3 minutes 14 seconds	15
28	klm	100 %	3 minutes 22 seconds	15
29	rr	100 %	4 minutes 3 seconds	15
30	कमल	100 %	4 minutes 14 seconds	15
31	Ak	100 %	6 minutes 56 seconds	15
32	ARPAN	100 %	6 minutes 57 seconds	15
33	aakrti	100 %	7 minutes 5 seconds	15
34	priya	100 %	15 minutes 38 seconds	15
35	pinku	100 %	25 minutes 50 seconds	15
36	G	100 %	20456 days 14 hours 27 minutes 47 seconds	15
37	Kushwaha ji	93 %	44 seconds	14
38	Eh	93 %	50 seconds	14
39	ALEX	93 %	50 seconds	14
40	shivankar	93 %	51 seconds	14
41	Prabal	93 %	52 seconds	14
42	Nikansh	93 %	1 minutes 5 seconds	14
43	Lalu	93 %	1 minutes 7 seconds	14
44	Raichu	93 %	1 minutes 10 seconds	14
45	GGHTHJK HTGHN	93 %	1 minutes 10 seconds	14
46	ankit comback	93 %	1 minutes 18 seconds	14
47	Manya	93 %	1 minutes 24 seconds	14
48	Astha	93 %	1 minutes 32 seconds	14
49	M	93 %	1 minutes 32 seconds	14
50	Anshu	93 %	1 minutes 51 seconds	14
51	anna	93 %	1 minutes 59 seconds	14
52	you	93 %	2 minutes 1 seconds	14
53	Akriti singh	93 %	2 minutes 14 seconds	14
54	n	93 %	2 minutes 19 seconds	14
55	ttttttttt	93 %	2 minutes 21 seconds	14
56	rfr	93 %	2 minutes 23 seconds	14
57	aum	93 %	2 minutes 36 seconds	14
58	Anushka	93 %	2 minutes 56 seconds	14
59	Jennis	93 %	2 minutes 58 seconds	14
60	qwerty	93 %	3 minutes 2 seconds	14
61	bhakti	93 %	3 minutes 16 seconds	14
62	W4fn	93 %	3 minutes 23 seconds	14
63	rr	93 %	3 minutes 38 seconds	14
64	Eshu	93 %	3 minutes 42 seconds	14
65	T	93 %	4 minutes 23 seconds	14
66	tejaswani yadav	93 %	4 minutes 45 seconds	14
67	Mahmood	93 %	5 minutes 9 seconds	14
68	Arshi	93 %	5 minutes 11 seconds	14
69	Shoaib haidar	93 %	5 minutes 17 seconds	14
70	Master sk	93 %	5 minutes 25 seconds	14
71	Pooja	93 %	5 minutes 55 seconds	14
72	Khushi	93 %	6 minutes 6 seconds	14
73	Harshith	93 %	7 minutes	14
74	Dharti	93 %	9 minutes 30 seconds	14
75	sahil	93 %	16 minutes 39 seconds	14
76	JD	87 %	51 seconds	13
77	alex	87 %	56 seconds	13
78	govind	87 %	57 seconds	13
79	Abhi	87 %	1 minutes 10 seconds	13
80	ankit	87 %	1 minutes 13 seconds	13
81	Aditi	87 %	1 minutes 14 seconds	13
82	J	87 %	1 minutes 14 seconds	13
83	Jhv	87 %	1 minutes 26 seconds	13
84	Lalu	87 %	1 minutes 30 seconds	13
85	HH	87 %	1 minutes 31 seconds	13
86	Alex	87 %	1 minutes 33 seconds	13
87	govind	87 %	1 minutes 41 seconds	13
88	Neelu	87 %	1 minutes 42 seconds	13
89	Eknoor singh	87 %	1 minutes 50 seconds	13
90	Lalu	87 %	1 minutes 56 seconds	13
91	Anubhav	87 %	1 minutes 57 seconds	13
92	Manya	87 %	2 minutes 3 seconds	13
93	ar	87 %	2 minutes 21 seconds	13
94	Shilpa	87 %	2 minutes 22 seconds	13
95	Anusha	87 %	2 minutes 25 seconds	13
96	dfffg	87 %	2 minutes 29 seconds	13
97	navya ahuja	87 %	2 minutes 30 seconds	13
98	n	87 %	2 minutes 41 seconds	13
99	VEDIKA	87 %	2 minutes 44 seconds	13
100	Sukriti Mohan	87 %	2 minutes 47 seconds	13
101	Prince	87 %	2 minutes 48 seconds	13
102	Akash	87 %	2 minutes 54 seconds	13
103	Riya	87 %	3 minutes 1 seconds	13
104	annie	87 %	3 minutes 14 seconds	13
105	govind	87 %	3 minutes 30 seconds	13
106	Anushka	87 %	3 minutes 42 seconds	13
107	kalyani	87 %	3 minutes 54 seconds	13
108	annie	87 %	4 minutes 15 seconds	13
109	Anusha J	87 %	4 minutes 23 seconds	13
110	Anushka	87 %	4 minutes 27 seconds	13
111	IYRS	87 %	5 minutes 4 seconds	13
112	Rehan	87 %	5 minutes 46 seconds	13
113	Varsha	87 %	6 minutes	13
114	Titli	87 %	6 minutes 33 seconds	13
115	Rithin	87 %	6 minutes 39 seconds	13
116	sssssssssszaz	87 %	6 minutes 54 seconds	13
117	Daksh	87 %	7 minutes 4 seconds	13
118	Alex	87 %	7 minutes 27 seconds	13
119	Aarzoo	87 %	12 minutes 51 seconds	13
120	Saim	87 %	13 minutes 45 seconds	13
121	areeb	87 %	19 minutes 59 seconds	13
122	shivankar	80 %	52 seconds	12
123	f	80 %	52 seconds	12
124	Gori	80 %	56 seconds	12
125	alex	80 %	1 minutes 1 seconds	12
126	Anway	80 %	1 minutes 11 seconds	12
127	Dishu	80 %	1 minutes 12 seconds	12
128	Eknoor singh	80 %	1 minutes 23 seconds	12
129	Kashish	80 %	1 minutes 23 seconds	12
130	Abhinav	80 %	1 minutes 25 seconds	12
131	H	80 %	1 minutes 45 seconds	12
132	X	80 %	1 minutes 49 seconds	12
133	b	80 %	1 minutes 50 seconds	12
134	Chhavi	80 %	2 minutes 1 seconds	12
135	Jnvi	80 %	2 minutes 9 seconds	12
136	shivam	80 %	2 minutes 15 seconds	12
137	Devaki	80 %	2 minutes 26 seconds	12
138	shiva	80 %	2 minutes 33 seconds	12
139	PK	80 %	2 minutes 36 seconds	12
140	h	80 %	2 minutes 54 seconds	12
141	Pp	80 %	3 minutes 3 seconds	12
142	Vishal	80 %	3 minutes 9 seconds	12
143	kanak	80 %	3 minutes 12 seconds	12
144	Roson limbu	80 %	3 minutes 26 seconds	12
145	Avneet kaur	80 %	3 minutes 29 seconds	12
146	sada	80 %	3 minutes 31 seconds	12
147	Mhk	80 %	3 minutes 33 seconds	12
148	dhangar	80 %	3 minutes 42 seconds	12
149	Sahib	80 %	3 minutes 44 seconds	12
150	Rakshit	80 %	3 minutes 49 seconds	12
151	Alex	80 %	3 minutes 54 seconds	12
152	Amelia	80 %	4 minutes 37 seconds	12
153	Akshita	80 %	4 minutes 38 seconds	12
154	sad	80 %	4 minutes 38 seconds	12
155	,	80 %	4 minutes 40 seconds	12
156	ui	80 %	4 minutes 46 seconds	12
157	name	80 %	5 minutes 1 seconds	12
158	..	80 %	5 minutes 1 seconds	12
159	Anubhav	80 %	5 minutes 16 seconds	12
160	ghjytk	80 %	5 minutes 42 seconds	12
161	Saee	80 %	6 minutes 1 seconds	12
162	tanu	80 %	6 minutes 11 seconds	12
163	Chaudhary dev	80 %	6 minutes 27 seconds	12
164	Sd	80 %	6 minutes 35 seconds	12
165	Siya	80 %	6 minutes 56 seconds	12
166	Jvjlfkhxkhxhlxlufkhxkgxyisyodludlhxhlxlhxjlxlhxljxlhxlhxkhxhkxo	80 %	7 minutes 11 seconds	12
167	Manu	80 %	8 minutes 9 seconds	12
168	Gurjar hi kehde	80 %	8 minutes 19 seconds	12
169	shivam	80 %	10 minutes 53 seconds	12
170	Ragan singh 10b	80 %	11 minutes 4 seconds	12
171	Anurodh	80 %	11 minutes 34 seconds	12
172	wha wha wah	80 %	12 minutes 27 seconds	12
173	😛	80 %	15 minutes 56 seconds	12
174	Adarsh	80 %	20 minutes 10 seconds	12
175	Ashita verma	80 %	49 minutes 7 seconds	12
176	Kalpana	73 %	57 seconds	11
177	Hg	73 %	1 minutes 1 seconds	11
178	shiva	73 %	1 minutes 10 seconds	11
179	Arrest, court, prison ,death sentence...blah blah blah	73 %	1 minutes 28 seconds	11
180	Science	73 %	1 minutes 37 seconds	11
181	F	73 %	1 minutes 41 seconds	11
182	H	73 %	1 minutes 49 seconds	11
183	Y	73 %	1 minutes 51 seconds	11
184	mohit	73 %	1 minutes 54 seconds	11
185	R	73 %	2 minutes 29 seconds	11
186	Priya	73 %	2 minutes 30 seconds	11
187	mohit	73 %	2 minutes 50 seconds	11
188	Alex	73 %	3 minutes 31 seconds	11
189	Loo	73 %	3 minutes 42 seconds	11
190	Myra	73 %	3 minutes 50 seconds	11
191	Shriiiti	73 %	4 minutes 24 seconds	11
192	Pari	73 %	4 minutes 36 seconds	11
193	Aviral Dubey 10th	73 %	4 minutes 41 seconds	11
194	P	73 %	4 minutes 47 seconds	11
195	Nandini	73 %	4 minutes 54 seconds	11
196	Siya	73 %	4 minutes 56 seconds	11
197	Shreya	73 %	5 minutes	11
198	lol	73 %	5 minutes 2 seconds	11
199	Nikansh	73 %	5 minutes 4 seconds	11
200	A	73 %	5 minutes 21 seconds	11

Also See: Resources and Development Class 10 Simplified Notes for Revision

WhatsApp Group Join Now

Telegram Group Join Now

Share this Article

Chemical Reactions and Equations MCQs | Class 10 Science Chapter 1 Quiz

Class 10 Science Chapter 1 Chemical Reactions and Equations MCQs

Leave a Comment Cancel reply

Class 10 Science Chapter 1 Chemical Reactions and Equations MCQs

Related posts:

Leave a Comment Cancel reply