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

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?

None of the above

2Cu + O2 → 2CuO

CuO + H2 → Cu + H2O

4Cu + O2 → 2Cu2O

2 / 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)

1 and 2

1 and 4

2 and 3

3 and 4

3 / 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 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.

4 / 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.

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

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

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

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

5 / 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.

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.

6 / 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.

(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.

7 / 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

1:2

2:1

8 / 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.

Also See: CBSE Class 10 English Topper’s Answer Sheet 2024 – Complete Question Paper & Analysis

chemical reactions and equations questions and answers

The color of crystals after heating is:

Black

Orange

Green

Brown

9 / 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.

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

1 and 2

2 and 3

1 and 4

3 and 4

10 / 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

Green

Grey

Yellow

Black

11 / 15

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

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

Burning of coal

Process of respiration

Decomposition of vegetable matter into compost

12 / 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 sulphide

Potassium chloride

Potassium iodide

13 / 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 2 and 3

Only 1 and 4

Only 1

Only 4

14 / 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.

1, 2, and 4

1, 2, and 3

2 and 4

3 and 4

15 / 15

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

chemical reactions and equations questions

Sodium sulphate

Sodium chloride

Barium sulphate

Barium chloride

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	Pooja	100 %	1 minutes 59 seconds	15
19	T	100 %	2 minutes	15
20	Rakshit	100 %	2 minutes 33 seconds	15
21	Nishant pal	100 %	2 minutes 45 seconds	15
22	tanu	100 %	3 minutes 1 seconds	15
23	Shoaib haidar	100 %	3 minutes 9 seconds	15
24	gg	100 %	3 minutes 14 seconds	15
25	klm	100 %	3 minutes 22 seconds	15
26	rr	100 %	4 minutes 3 seconds	15
27	कमल	100 %	4 minutes 14 seconds	15
28	Ak	100 %	6 minutes 56 seconds	15
29	ARPAN	100 %	6 minutes 57 seconds	15
30	aakrti	100 %	7 minutes 5 seconds	15
31	pinku	100 %	25 minutes 50 seconds	15
32	G	100 %	20456 days 14 hours 27 minutes 47 seconds	15
33	Kushwaha ji	93 %	44 seconds	14
34	Eh	93 %	50 seconds	14
35	ALEX	93 %	50 seconds	14
36	shivankar	93 %	51 seconds	14
37	Prabal	93 %	52 seconds	14
38	Nikansh	93 %	1 minutes 5 seconds	14
39	Lalu	93 %	1 minutes 7 seconds	14
40	Raichu	93 %	1 minutes 10 seconds	14
41	GGHTHJK HTGHN	93 %	1 minutes 10 seconds	14
42	ankit comback	93 %	1 minutes 18 seconds	14
43	Manya	93 %	1 minutes 24 seconds	14
44	Astha	93 %	1 minutes 32 seconds	14
45	M	93 %	1 minutes 32 seconds	14
46	Anshu	93 %	1 minutes 51 seconds	14
47	anna	93 %	1 minutes 59 seconds	14
48	you	93 %	2 minutes 1 seconds	14
49	Akriti singh	93 %	2 minutes 14 seconds	14
50	n	93 %	2 minutes 19 seconds	14
51	ttttttttt	93 %	2 minutes 21 seconds	14
52	rfr	93 %	2 minutes 23 seconds	14
53	aum	93 %	2 minutes 36 seconds	14
54	Anushka	93 %	2 minutes 56 seconds	14
55	Jennis	93 %	2 minutes 58 seconds	14
56	qwerty	93 %	3 minutes 2 seconds	14
57	bhakti	93 %	3 minutes 16 seconds	14
58	W4fn	93 %	3 minutes 23 seconds	14
59	Eshu	93 %	3 minutes 42 seconds	14
60	T	93 %	4 minutes 23 seconds	14
61	tejaswani yadav	93 %	4 minutes 45 seconds	14
62	Mahmood	93 %	5 minutes 9 seconds	14
63	Arshi	93 %	5 minutes 11 seconds	14
64	Shoaib haidar	93 %	5 minutes 17 seconds	14
65	Master sk	93 %	5 minutes 25 seconds	14
66	Pooja	93 %	5 minutes 55 seconds	14
67	Khushi	93 %	6 minutes 6 seconds	14
68	Dharti	93 %	9 minutes 30 seconds	14
69	sahil	93 %	16 minutes 39 seconds	14
70	alex	87 %	56 seconds	13
71	govind	87 %	57 seconds	13
72	Abhi	87 %	1 minutes 10 seconds	13
73	ankit	87 %	1 minutes 13 seconds	13
74	Aditi	87 %	1 minutes 14 seconds	13
75	J	87 %	1 minutes 14 seconds	13
76	Jhv	87 %	1 minutes 26 seconds	13
77	Lalu	87 %	1 minutes 30 seconds	13
78	HH	87 %	1 minutes 31 seconds	13
79	Alex	87 %	1 minutes 33 seconds	13
80	govind	87 %	1 minutes 41 seconds	13
81	Neelu	87 %	1 minutes 42 seconds	13
82	Eknoor singh	87 %	1 minutes 50 seconds	13
83	Lalu	87 %	1 minutes 56 seconds	13
84	Anubhav	87 %	1 minutes 57 seconds	13
85	Manya	87 %	2 minutes 3 seconds	13
86	ar	87 %	2 minutes 21 seconds	13
87	Shilpa	87 %	2 minutes 22 seconds	13
88	Anusha	87 %	2 minutes 25 seconds	13
89	navya ahuja	87 %	2 minutes 30 seconds	13
90	n	87 %	2 minutes 41 seconds	13
91	VEDIKA	87 %	2 minutes 44 seconds	13
92	Sukriti Mohan	87 %	2 minutes 47 seconds	13
93	Akash	87 %	2 minutes 54 seconds	13
94	Riya	87 %	3 minutes 1 seconds	13
95	annie	87 %	3 minutes 14 seconds	13
96	govind	87 %	3 minutes 30 seconds	13
97	Anushka	87 %	3 minutes 42 seconds	13
98	annie	87 %	4 minutes 15 seconds	13
99	Anushka	87 %	4 minutes 27 seconds	13
100	IYRS	87 %	5 minutes 4 seconds	13
101	Rehan	87 %	5 minutes 46 seconds	13
102	Varsha	87 %	6 minutes	13
103	Titli	87 %	6 minutes 33 seconds	13
104	sssssssssszaz	87 %	6 minutes 54 seconds	13
105	Daksh	87 %	7 minutes 4 seconds	13
106	Alex	87 %	7 minutes 27 seconds	13
107	Saim	87 %	13 minutes 45 seconds	13
108	areeb	87 %	19 minutes 59 seconds	13
109	shivankar	80 %	52 seconds	12
110	f	80 %	52 seconds	12
111	Gori	80 %	56 seconds	12
112	alex	80 %	1 minutes 1 seconds	12
113	Anway	80 %	1 minutes 11 seconds	12
114	Eknoor singh	80 %	1 minutes 23 seconds	12
115	Kashish	80 %	1 minutes 23 seconds	12
116	Abhinav	80 %	1 minutes 25 seconds	12
117	H	80 %	1 minutes 45 seconds	12
118	X	80 %	1 minutes 49 seconds	12
119	Chhavi	80 %	2 minutes 1 seconds	12
120	Jnvi	80 %	2 minutes 9 seconds	12
121	shivam	80 %	2 minutes 15 seconds	12
122	Devaki	80 %	2 minutes 26 seconds	12
123	shiva	80 %	2 minutes 33 seconds	12
124	PK	80 %	2 minutes 36 seconds	12
125	h	80 %	2 minutes 54 seconds	12
126	Vishal	80 %	3 minutes 9 seconds	12
127	Roson limbu	80 %	3 minutes 26 seconds	12
128	sada	80 %	3 minutes 31 seconds	12
129	Mhk	80 %	3 minutes 33 seconds	12
130	dhangar	80 %	3 minutes 42 seconds	12
131	Sahib	80 %	3 minutes 44 seconds	12
132	Rakshit	80 %	3 minutes 49 seconds	12
133	Alex	80 %	3 minutes 54 seconds	12
134	Amelia	80 %	4 minutes 37 seconds	12
135	Akshita	80 %	4 minutes 38 seconds	12
136	sad	80 %	4 minutes 38 seconds	12
137	,	80 %	4 minutes 40 seconds	12
138	ui	80 %	4 minutes 46 seconds	12
139	name	80 %	5 minutes 1 seconds	12
140	..	80 %	5 minutes 1 seconds	12
141	Anubhav	80 %	5 minutes 16 seconds	12
142	ghjytk	80 %	5 minutes 42 seconds	12
143	Saee	80 %	6 minutes 1 seconds	12
144	tanu	80 %	6 minutes 11 seconds	12
145	Chaudhary dev	80 %	6 minutes 27 seconds	12
146	Siya	80 %	6 minutes 56 seconds	12
147	Jvjlfkhxkhxhlxlufkhxkgxyisyodludlhxhlxlhxjlxlhxljxlhxlhxkhxhkxo	80 %	7 minutes 11 seconds	12
148	Manu	80 %	8 minutes 9 seconds	12
149	shivam	80 %	10 minutes 53 seconds	12
150	Ragan singh 10b	80 %	11 minutes 4 seconds	12
151	Anurodh	80 %	11 minutes 34 seconds	12
152	wha wha wah	80 %	12 minutes 27 seconds	12
153	😛	80 %	15 minutes 56 seconds	12
154	Adarsh	80 %	20 minutes 10 seconds	12
155	Kalpana	73 %	57 seconds	11
156	Hg	73 %	1 minutes 1 seconds	11
157	shiva	73 %	1 minutes 10 seconds	11
158	Arrest, court, prison ,death sentence...blah blah blah	73 %	1 minutes 28 seconds	11
159	Science	73 %	1 minutes 37 seconds	11
160	F	73 %	1 minutes 41 seconds	11
161	H	73 %	1 minutes 49 seconds	11
162	Y	73 %	1 minutes 51 seconds	11
163	mohit	73 %	1 minutes 54 seconds	11
164	R	73 %	2 minutes 29 seconds	11
165	Priya	73 %	2 minutes 30 seconds	11
166	mohit	73 %	2 minutes 50 seconds	11
167	Alex	73 %	3 minutes 31 seconds	11
168	Loo	73 %	3 minutes 42 seconds	11
169	Myra	73 %	3 minutes 50 seconds	11
170	Shriiiti	73 %	4 minutes 24 seconds	11
171	Pari	73 %	4 minutes 36 seconds	11
172	Aviral Dubey 10th	73 %	4 minutes 41 seconds	11
173	P	73 %	4 minutes 47 seconds	11
174	Nandini	73 %	4 minutes 54 seconds	11
175	Siya	73 %	4 minutes 56 seconds	11
176	Shreya	73 %	5 minutes	11
177	lol	73 %	5 minutes 2 seconds	11
178	Nikansh	73 %	5 minutes 4 seconds	11
179	A	73 %	5 minutes 21 seconds	11
180	Sabina khan	73 %	5 minutes 25 seconds	11
181	K advitha	73 %	5 minutes 26 seconds	11
182	sneha	73 %	5 minutes 30 seconds	11
183	...	73 %	5 minutes 38 seconds	11
184	A	73 %	5 minutes 47 seconds	11
185	Aman Yadav	73 %	5 minutes 57 seconds	11
186	Vishnu	73 %	6 minutes 2 seconds	11
187	Loy	73 %	6 minutes 3 seconds	11
188	Pranav	73 %	6 minutes 11 seconds	11
189	Manya	73 %	6 minutes 35 seconds	11
190	kk	73 %	6 minutes 47 seconds	11
191	Vansh Agarwal	73 %	7 minutes 21 seconds	11
192	RJchdty	73 %	7 minutes 24 seconds	11
193	rr	73 %	8 minutes 16 seconds	11
194	Rachi	73 %	9 minutes 4 seconds	11
195	Prince	73 %	9 minutes 43 seconds	11
196	FF	73 %	10 minutes 8 seconds	11
197	Tanishka	73 %	12 minutes 52 seconds	11
198	Aakash	73 %	12 minutes 56 seconds	11
199	Ragan singh 10B	73 %	19 minutes 27 seconds	11
200	Swara	73 %	19 minutes 48 seconds	11

Also See: A Triumph of Surgery Class 10 English MCQs – Test Your Knowledge!

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