The Central Board of Secondary Education (CBSE) organised the Class 10 Science paper on 2nd December, 2021. The paper was conducted between 11:30 AM and 01:00 PM. Question papers were distributed before 11:30 AM to provide extra 20 minutes to students for reading the paper before they started writing. We managed to get the original question paper of Class 10 Science for which the term 1 board examination was conducted. The CBSE Class 10 Science Term 1 Question Paper 2021 is provided here in PDF format.
CBSE Answer Key: 10th Maths Term 1 CBSE Board Exam 2021-22
Along with the question paper, students can also access the CBSE Class 10 Science Term 1 Answer Key. This answer key is solely prepared by the experts and is not the one released by the CBSE Board. The official answer key will also be made available here soon after the board will release it on cbse.nic.in.
CBSE Class 10 Science Term 1 Board Exam 2021-22: Question Paper
General Instructions:
1. The Question Paper contains three sections.
2. Section A has 24 questions. Attempt any 20 questions.
3. Section B has 24 questions. Attempt any 20 questions.
4. Section C has 12 questions. Attempt any 10 questions.
5. All questions carry equal marks.
6. There is no negative marking.
Maximum Marks: 40
Time Allowed: 90 Minutes
Screenshot of CBSE Class 10 Science Term 1 Question Paper:
Section A
1. A student took Sodium Sulphate solution in a test tube and added Barium Chloride solution to it. He observed that an insoluble substance has formed. The colour and molecular formula of the insoluble substance is
(a) Grey, Ba2SO4
(b) Yellow, Ba(SO4)2
(c) White, BaSO4
(d) Pink, BaSO4
2. Which of the following oxide(s) is/are soluble in water to form alkalis?
(i) Na2O
(ii) SO2
(iii) K2O
(iv) NO2
(a) (i) and (iii)
(b) (i) only
(c) (ii) and (iv)
(d) (iii) only
3. Study the diagram given below and identify the gas formed in the reaction.
(a) Carbon di-oxide which extinguishes the burning candle.
(b) Oxygen due to which the candle burns more brightly.
(c) Sulphur dioxide which produces a suffocating smell.
(d) Hydrogen which while burning produces a popping sound.
4. Sodium reacts with water to form sodium hydroxide and hydrogen gas. The balanced equation which represents the above reaction is
(a) Na(s) + 2H20(l) → 2NaOH(aq) + 2H2(g)
(b) 2Na(s) + 2H2O(l) → 2NaOH(aq) +H2(g)
(c) 2Na(s) + 2H20(l) → NaOH(aq) + 2H2(g)
(d) 2Na(s) + H20(l) - 2NaOH(aq) + 2H2(g)
5. Which of the options in the given table are correct?
| Option |
Natural Source |
Acid Present |
| (i) |
Orange |
Oxalic acid |
| (ii) |
Sour milk |
Lactic acid |
| (iii) |
Ant sting |
Methanoic acid |
| (iv) |
Tamarind |
Acetic acid |
(a) (i) and (ii)
(b) (i) and (iv)
(c) (ii) and (iii)
(d) (ii) and (iv)
.
.
.
Download the full CBSE Class 10 Science Question Paper from the following links:
| CBSE Class 10 Science Question Paper Term 1 Board Exam 2021-22 (PDF) |
CBSE Class 10 Science Answer Key Term 1 Exam 2021-22:
| Q. No. |
Answer |
Q. No. |
Answer |
Q. No. |
Answer |
| 1 |
c |
21 |
c |
41 |
b |
| 2 |
a |
22 |
b |
42 |
b |
| 3 |
d |
23 |
c |
43 |
d |
| 4 |
b |
24 |
c |
44 |
b |
| 5 |
c |
25 |
d |
45 |
d |
| 6 |
c |
26 |
c |
46 |
d |
| 7 |
c |
27 |
d |
47 |
c |
| 8 |
d |
28 |
c |
48 |
c |
| 9 |
d |
29 |
b |
49 |
b |
| 10 |
c |
30 |
d |
50 |
d |
| 11 |
d |
31 |
b |
51 |
a |
| 12 |
a |
32 |
c |
52 |
c |
| 13 |
c |
33 |
b |
53 |
c |
| 14 |
b |
34 |
c |
54 |
c |
| 15 |
a |
35 |
a |
55 |
a |
| 16 |
c |
36 |
c |
56 |
c |
| 17 |
a |
37 |
b |
57 |
b |
| 18 |
c |
38 |
c |
58 |
d |
| 19 |
b |
39 |
c |
59 |
b |
| 20 |
b |
40 |
d |
60 |
b |
Also Check: CBSE Class 10 Most Important Resources for High Score in Term 1 Board Exam
