CBSE Class 10 > Class 10 Notes > Science > CBSE Science Past Year Paper with Solutions - 2025 (Set - 2)
CBSE Science Past Year Paper with Solutions - 2025 (Set - 2)
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Page 1
*31/2/1* 1 # [ P.T.O. ]
*ECNEICS*
??????????? ????? ? -???? ??? ?? ?????-???????? ??
???-????? ?? ???? ? ?????? ?
Candidates must write the Q.P. Code
on the title page of the answer-book.
Series : GHF2E
SET~1
????? ? -???? ???
Q.P. Code
??? ?
?.
Roll No.
???
NOTE
(I) ????? ????? ?? ??? ??? ?? ????? ? -???? ??? ?????? ?????
27 ??? ?
(I) Please check that this question paper
contains 27 printed pages.
(II) ????? ? -???? ??? ??????? ????? ?? ?? ???? ??
????? ? -???? ??? ?? ??????????? ????? -???????? ??
???-????? ?? ?????? ?
(II)
Q.P. Code given on the right hand
side of the question paper should be
written on the title page of the
answer-book by the candidate.
(III) ????? ????? ?? ??? ??? ?? ????? ? -???? ??? 39 ????? ?
??? ?
(III) Please check that this question paper
contains 39 questions.
(IV) ? ? ??? ????? ? ?? ???? ? ????? ???? ???? ??
????, ????? -????? ?? ??? ??? ???? ?? ????? ?
?? ??? ??
??? ???? ? ????? ?
(IV)
Please write down the Serial
Number of the question in the
answer-book at the given place
before attempting it.
(V) ?? ????? ? -???? ?? ????? ?? ???? 15 ????? ??
??? ????? ??? ?? ? ????? ? -???? ?? ?????? ????????
??? 10.15 ??? ????? ????? ? 10.15 ??? ??
10.30 ??? ?? ??????????? ???? ????? ? -???? ??
??????? ?? ?? ????? ?? ????? ?? ????? -????????
?? ??? ????? ???? ???????? ?
(V)
15 minute time has been allotted to
read this question paper. The
question paper will be distributed
at 10.15 a.m. From 10.15 a.m. to
10.30 a.m., the candidates will
read the question paper only and
will not write any answer on the
answer-book during this period.
???????
SCIENCE
????????? ??? : 3 ????? ???? ??? ?
?? : 80
Time allowed : 3 hours Maximum Marks : 80
31/2/1
#
Page 2
*31/2/1* 1 # [ P.T.O. ]
*ECNEICS*
??????????? ????? ? -???? ??? ?? ?????-???????? ??
???-????? ?? ???? ? ?????? ?
Candidates must write the Q.P. Code
on the title page of the answer-book.
Series : GHF2E
SET~1
????? ? -???? ???
Q.P. Code
??? ?
?.
Roll No.
???
NOTE
(I) ????? ????? ?? ??? ??? ?? ????? ? -???? ??? ?????? ?????
27 ??? ?
(I) Please check that this question paper
contains 27 printed pages.
(II) ????? ? -???? ??? ??????? ????? ?? ?? ???? ??
????? ? -???? ??? ?? ??????????? ????? -???????? ??
???-????? ?? ?????? ?
(II)
Q.P. Code given on the right hand
side of the question paper should be
written on the title page of the
answer-book by the candidate.
(III) ????? ????? ?? ??? ??? ?? ????? ? -???? ??? 39 ????? ?
??? ?
(III) Please check that this question paper
contains 39 questions.
(IV) ? ? ??? ????? ? ?? ???? ? ????? ???? ???? ??
????, ????? -????? ?? ??? ??? ???? ?? ????? ?
?? ??? ??
??? ???? ? ????? ?
(IV)
Please write down the Serial
Number of the question in the
answer-book at the given place
before attempting it.
(V) ?? ????? ? -???? ?? ????? ?? ???? 15 ????? ??
??? ????? ??? ?? ? ????? ? -???? ?? ?????? ????????
??? 10.15 ??? ????? ????? ? 10.15 ??? ??
10.30 ??? ?? ??????????? ???? ????? ? -???? ??
??????? ?? ?? ????? ?? ????? ?? ????? -????????
?? ??? ????? ???? ???????? ?
(V)
15 minute time has been allotted to
read this question paper. The
question paper will be distributed
at 10.15 a.m. From 10.15 a.m. to
10.30 a.m., the candidates will
read the question paper only and
will not write any answer on the
answer-book during this period.
???????
SCIENCE
????????? ??? : 3 ????? ???? ??? ?
?? : 80
Time allowed : 3 hours Maximum Marks : 80
31/2/1
#
*31/2/1* 2 #
*ECNEICS*
???????? ?? ?????? ?:
?? ?? ?? ? ? ?? ??????? ?? ???? ????? ??? ?? ???? ? ?? ???? ???? ?? ?? ?? ? ????? :
(i) ?? ????? ? -???? ??? ?? 39 ????? ? ??? ? ????????? ? ?? ???? ??? ?
(ii) ?? ????? ?-???? ????? ?? ??? ??? ?? ????? ???? ??? ?? – ?,??,??,?? ??
? ? ?
(iii) ????? ?? – ????? ? ?
??? ?? 1??? 20 ?? ????? ??? ??? ?????? ?? ????? ? ??? ? ???????? ????? ? 1 ?
?? ?? ?? ?
(iv) ????? ?? – ????? ? ?
??? ?? 21??? 26 ?? ??? ??-??????? ?????? ?? ????? ? ??? ? ???????? ????? ? 2 ?
???? ??
?? ? ?? ????? ??? ?? ????? 30 ?? 50 ???????? ??? ????? ???? ????? ?
(v) ????? ?? – ????? ? ?
??? ?? 27 ?? 33 ?? ??-??????? ?????? ?? ????? ? ??? ? ????? ?? ? ????? ? 3 ?
???? ?? ?? ? ??
????? ??? ?? ????? 50 ?? 80 ??? ????? ??? ????? ???? ????? ?
(vi) ????? ?? – ????? ? ?
??? ?? 34 ?? 36 ?? ??????-??????? ?????? ?? ????? ? ??? ? ????? ?? ? ????? ? 5 ?
???? ?? ?? ?
?? ????? ??? ?? ????? 80 ?? 120 ??? ????? ??? ????? ???? ????? ?
(vii) ????? ?? – ????? ? ?
??? ?? 37 ?? 39 ?? 3 ????? -??????? /?????? -??? ???? ??????? ?? ???? ??
??? ??
4 ?
???? ?? ????? ? (??-????? ??? ????) ??? ?
(viii) ????? ? -???? ??? ????? ????? ? ???? ?????? ??? ?? ? ??????, ??? ????? ??? ?
????? ????? ? ????? ?? ??? ? ?? ??????
?? ????? ??? ??? ??? ?? ?? ?????? ?? ????? ??????? ?
???? ? $
????? ? ?
??? ?? 1 ?? 20 ?? ???????? ??? ????? ? ??? ? ????? ?? ??? ?? ?????? ?? ??? ?? ? ???????? ????? ? ??? ?????
?? ??? ????? ??? ??? ?? ???? ???? ????? ? ????? ?? ? ? ? ? 20 ?1=20
1. ???? ??? ??? ??????? ??? ?? ??? ?? ??? ???????? ????????? ??????? ???? ??? ?
??????? ?????????
?????? ??? -?? ?? ?
(A) CH
4
+ O
2
? ? ? CO
2
+ 2H
2
O
(B) CH
4
+ 2O
2
? ? ? 2CO
2
+ 2H
2
O + ????
(C) CH
4
+ 2O
2
? ? ? CO
2
+ 2H
2
O
(D) CH
4
+ 2O
2
? ? ? CO
2
+ 2H
2
O + ????
Page 3
*31/2/1* 1 # [ P.T.O. ]
*ECNEICS*
??????????? ????? ? -???? ??? ?? ?????-???????? ??
???-????? ?? ???? ? ?????? ?
Candidates must write the Q.P. Code
on the title page of the answer-book.
Series : GHF2E
SET~1
????? ? -???? ???
Q.P. Code
??? ?
?.
Roll No.
???
NOTE
(I) ????? ????? ?? ??? ??? ?? ????? ? -???? ??? ?????? ?????
27 ??? ?
(I) Please check that this question paper
contains 27 printed pages.
(II) ????? ? -???? ??? ??????? ????? ?? ?? ???? ??
????? ? -???? ??? ?? ??????????? ????? -???????? ??
???-????? ?? ?????? ?
(II)
Q.P. Code given on the right hand
side of the question paper should be
written on the title page of the
answer-book by the candidate.
(III) ????? ????? ?? ??? ??? ?? ????? ? -???? ??? 39 ????? ?
??? ?
(III) Please check that this question paper
contains 39 questions.
(IV) ? ? ??? ????? ? ?? ???? ? ????? ???? ???? ??
????, ????? -????? ?? ??? ??? ???? ?? ????? ?
?? ??? ??
??? ???? ? ????? ?
(IV)
Please write down the Serial
Number of the question in the
answer-book at the given place
before attempting it.
(V) ?? ????? ? -???? ?? ????? ?? ???? 15 ????? ??
??? ????? ??? ?? ? ????? ? -???? ?? ?????? ????????
??? 10.15 ??? ????? ????? ? 10.15 ??? ??
10.30 ??? ?? ??????????? ???? ????? ? -???? ??
??????? ?? ?? ????? ?? ????? ?? ????? -????????
?? ??? ????? ???? ???????? ?
(V)
15 minute time has been allotted to
read this question paper. The
question paper will be distributed
at 10.15 a.m. From 10.15 a.m. to
10.30 a.m., the candidates will
read the question paper only and
will not write any answer on the
answer-book during this period.
???????
SCIENCE
????????? ??? : 3 ????? ???? ??? ?
?? : 80
Time allowed : 3 hours Maximum Marks : 80
31/2/1
#
*31/2/1* 2 #
*ECNEICS*
???????? ?? ?????? ?:
?? ?? ?? ? ? ?? ??????? ?? ???? ????? ??? ?? ???? ? ?? ???? ???? ?? ?? ?? ? ????? :
(i) ?? ????? ? -???? ??? ?? 39 ????? ? ??? ? ????????? ? ?? ???? ??? ?
(ii) ?? ????? ?-???? ????? ?? ??? ??? ?? ????? ???? ??? ?? – ?,??,??,?? ??
? ? ?
(iii) ????? ?? – ????? ? ?
??? ?? 1??? 20 ?? ????? ??? ??? ?????? ?? ????? ? ??? ? ???????? ????? ? 1 ?
?? ?? ?? ?
(iv) ????? ?? – ????? ? ?
??? ?? 21??? 26 ?? ??? ??-??????? ?????? ?? ????? ? ??? ? ???????? ????? ? 2 ?
???? ??
?? ? ?? ????? ??? ?? ????? 30 ?? 50 ???????? ??? ????? ???? ????? ?
(v) ????? ?? – ????? ? ?
??? ?? 27 ?? 33 ?? ??-??????? ?????? ?? ????? ? ??? ? ????? ?? ? ????? ? 3 ?
???? ?? ?? ? ??
????? ??? ?? ????? 50 ?? 80 ??? ????? ??? ????? ???? ????? ?
(vi) ????? ?? – ????? ? ?
??? ?? 34 ?? 36 ?? ??????-??????? ?????? ?? ????? ? ??? ? ????? ?? ? ????? ? 5 ?
???? ?? ?? ?
?? ????? ??? ?? ????? 80 ?? 120 ??? ????? ??? ????? ???? ????? ?
(vii) ????? ?? – ????? ? ?
??? ?? 37 ?? 39 ?? 3 ????? -??????? /?????? -??? ???? ??????? ?? ???? ??
??? ??
4 ?
???? ?? ????? ? (??-????? ??? ????) ??? ?
(viii) ????? ? -???? ??? ????? ????? ? ???? ?????? ??? ?? ? ??????, ??? ????? ??? ?
????? ????? ? ????? ?? ??? ? ?? ??????
?? ????? ??? ??? ??? ?? ?? ?????? ?? ????? ??????? ?
???? ? $
????? ? ?
??? ?? 1 ?? 20 ?? ???????? ??? ????? ? ??? ? ????? ?? ??? ?? ?????? ?? ??? ?? ? ???????? ????? ? ??? ?????
?? ??? ????? ??? ??? ?? ???? ???? ????? ? ????? ?? ? ? ? ? 20 ?1=20
1. ???? ??? ??? ??????? ??? ?? ??? ?? ??? ???????? ????????? ??????? ???? ??? ?
??????? ?????????
?????? ??? -?? ?? ?
(A) CH
4
+ O
2
? ? ? CO
2
+ 2H
2
O
(B) CH
4
+ 2O
2
? ? ? 2CO
2
+ 2H
2
O + ????
(C) CH
4
+ 2O
2
? ? ? CO
2
+ 2H
2
O
(D) CH
4
+ 2O
2
? ? ? CO
2
+ 2H
2
O + ????
*31/2/1* 3 # [ P.T.O. ]
*ECNEICS*
General Instructions :
Read the following instructions very carefully and strictly follow them :
(i) This question paper comprises 39 questions. All questions are compulsory.
(ii) This question paper is divided into five sections – A, B, C, D and E.
(iii) Section A – Questions No. 1 to 20 are Multiple Choice Questions. Each
question carries 1 mark.
(iv) Section B – Questions No. 21 to 26 are Very Short Answer type questions.
Each question carries 2 marks. Answer to these questions should be in the
range of 30 to 50 words.
(v) Section C – Questions No. 27 to 33 are Short Answer type questions. Each
question carries 3 marks. Answer to these questions should in the range of
50 to 80 words.
(vi) Section D – Questions No. 34 to 36 are Long Answer type questions. Each
question carries 5 marks. Answer to these questions should be in the range of
80 to 120 words.
(vii) Section E – Questions No. 37 to 39 are of 3 source-based/case-based units of
assessment carrying 4 marks each with sub-parts.
(viii) There is no overall choice. However, an internal choice has been provided in
some sections. Only one of the alternatives has to be attempted in such
questions.
SECTION A
Questions No. 1 to 20 are Multiple Choice Questions. Only one of the choices is
correct. Select and write the most appropriate option out of the four options given
for each. 20 ?1=20
1. The correct balanced chemical equation showing exothermic reaction in
which natural gas burns in air is :
(A) CH
4
+ O
2
? ? ? CO
2
+ 2H
2
O
(B) CH
4
+ 2O
2
? ? ? 2CO
2
+ 2H
2
O + Energy
(C) CH
4
+ 2O
2
? ? ? CO
2
+ 2H
2
O
(D) CH
4
+ 2O
2
? ? ? CO
2
+ 2H
2
O + Energy
Page 4
*31/2/1* 1 # [ P.T.O. ]
*ECNEICS*
??????????? ????? ? -???? ??? ?? ?????-???????? ??
???-????? ?? ???? ? ?????? ?
Candidates must write the Q.P. Code
on the title page of the answer-book.
Series : GHF2E
SET~1
????? ? -???? ???
Q.P. Code
??? ?
?.
Roll No.
???
NOTE
(I) ????? ????? ?? ??? ??? ?? ????? ? -???? ??? ?????? ?????
27 ??? ?
(I) Please check that this question paper
contains 27 printed pages.
(II) ????? ? -???? ??? ??????? ????? ?? ?? ???? ??
????? ? -???? ??? ?? ??????????? ????? -???????? ??
???-????? ?? ?????? ?
(II)
Q.P. Code given on the right hand
side of the question paper should be
written on the title page of the
answer-book by the candidate.
(III) ????? ????? ?? ??? ??? ?? ????? ? -???? ??? 39 ????? ?
??? ?
(III) Please check that this question paper
contains 39 questions.
(IV) ? ? ??? ????? ? ?? ???? ? ????? ???? ???? ??
????, ????? -????? ?? ??? ??? ???? ?? ????? ?
?? ??? ??
??? ???? ? ????? ?
(IV)
Please write down the Serial
Number of the question in the
answer-book at the given place
before attempting it.
(V) ?? ????? ? -???? ?? ????? ?? ???? 15 ????? ??
??? ????? ??? ?? ? ????? ? -???? ?? ?????? ????????
??? 10.15 ??? ????? ????? ? 10.15 ??? ??
10.30 ??? ?? ??????????? ???? ????? ? -???? ??
??????? ?? ?? ????? ?? ????? ?? ????? -????????
?? ??? ????? ???? ???????? ?
(V)
15 minute time has been allotted to
read this question paper. The
question paper will be distributed
at 10.15 a.m. From 10.15 a.m. to
10.30 a.m., the candidates will
read the question paper only and
will not write any answer on the
answer-book during this period.
???????
SCIENCE
????????? ??? : 3 ????? ???? ??? ?
?? : 80
Time allowed : 3 hours Maximum Marks : 80
31/2/1
#
*31/2/1* 2 #
*ECNEICS*
???????? ?? ?????? ?:
?? ?? ?? ? ? ?? ??????? ?? ???? ????? ??? ?? ???? ? ?? ???? ???? ?? ?? ?? ? ????? :
(i) ?? ????? ? -???? ??? ?? 39 ????? ? ??? ? ????????? ? ?? ???? ??? ?
(ii) ?? ????? ?-???? ????? ?? ??? ??? ?? ????? ???? ??? ?? – ?,??,??,?? ??
? ? ?
(iii) ????? ?? – ????? ? ?
??? ?? 1??? 20 ?? ????? ??? ??? ?????? ?? ????? ? ??? ? ???????? ????? ? 1 ?
?? ?? ?? ?
(iv) ????? ?? – ????? ? ?
??? ?? 21??? 26 ?? ??? ??-??????? ?????? ?? ????? ? ??? ? ???????? ????? ? 2 ?
???? ??
?? ? ?? ????? ??? ?? ????? 30 ?? 50 ???????? ??? ????? ???? ????? ?
(v) ????? ?? – ????? ? ?
??? ?? 27 ?? 33 ?? ??-??????? ?????? ?? ????? ? ??? ? ????? ?? ? ????? ? 3 ?
???? ?? ?? ? ??
????? ??? ?? ????? 50 ?? 80 ??? ????? ??? ????? ???? ????? ?
(vi) ????? ?? – ????? ? ?
??? ?? 34 ?? 36 ?? ??????-??????? ?????? ?? ????? ? ??? ? ????? ?? ? ????? ? 5 ?
???? ?? ?? ?
?? ????? ??? ?? ????? 80 ?? 120 ??? ????? ??? ????? ???? ????? ?
(vii) ????? ?? – ????? ? ?
??? ?? 37 ?? 39 ?? 3 ????? -??????? /?????? -??? ???? ??????? ?? ???? ??
??? ??
4 ?
???? ?? ????? ? (??-????? ??? ????) ??? ?
(viii) ????? ? -???? ??? ????? ????? ? ???? ?????? ??? ?? ? ??????, ??? ????? ??? ?
????? ????? ? ????? ?? ??? ? ?? ??????
?? ????? ??? ??? ??? ?? ?? ?????? ?? ????? ??????? ?
???? ? $
????? ? ?
??? ?? 1 ?? 20 ?? ???????? ??? ????? ? ??? ? ????? ?? ??? ?? ?????? ?? ??? ?? ? ???????? ????? ? ??? ?????
?? ??? ????? ??? ??? ?? ???? ???? ????? ? ????? ?? ? ? ? ? 20 ?1=20
1. ???? ??? ??? ??????? ??? ?? ??? ?? ??? ???????? ????????? ??????? ???? ??? ?
??????? ?????????
?????? ??? -?? ?? ?
(A) CH
4
+ O
2
? ? ? CO
2
+ 2H
2
O
(B) CH
4
+ 2O
2
? ? ? 2CO
2
+ 2H
2
O + ????
(C) CH
4
+ 2O
2
? ? ? CO
2
+ 2H
2
O
(D) CH
4
+ 2O
2
? ? ? CO
2
+ 2H
2
O + ????
*31/2/1* 3 # [ P.T.O. ]
*ECNEICS*
General Instructions :
Read the following instructions very carefully and strictly follow them :
(i) This question paper comprises 39 questions. All questions are compulsory.
(ii) This question paper is divided into five sections – A, B, C, D and E.
(iii) Section A – Questions No. 1 to 20 are Multiple Choice Questions. Each
question carries 1 mark.
(iv) Section B – Questions No. 21 to 26 are Very Short Answer type questions.
Each question carries 2 marks. Answer to these questions should be in the
range of 30 to 50 words.
(v) Section C – Questions No. 27 to 33 are Short Answer type questions. Each
question carries 3 marks. Answer to these questions should in the range of
50 to 80 words.
(vi) Section D – Questions No. 34 to 36 are Long Answer type questions. Each
question carries 5 marks. Answer to these questions should be in the range of
80 to 120 words.
(vii) Section E – Questions No. 37 to 39 are of 3 source-based/case-based units of
assessment carrying 4 marks each with sub-parts.
(viii) There is no overall choice. However, an internal choice has been provided in
some sections. Only one of the alternatives has to be attempted in such
questions.
SECTION A
Questions No. 1 to 20 are Multiple Choice Questions. Only one of the choices is
correct. Select and write the most appropriate option out of the four options given
for each. 20 ?1=20
1. The correct balanced chemical equation showing exothermic reaction in
which natural gas burns in air is :
(A) CH
4
+ O
2
? ? ? CO
2
+ 2H
2
O
(B) CH
4
+ 2O
2
? ? ? 2CO
2
+ 2H
2
O + Energy
(C) CH
4
+ 2O
2
? ? ? CO
2
+ 2H
2
O
(D) CH
4
+ 2O
2
? ? ? CO
2
+ 2H
2
O + Energy
*31/2/1* 4 #
*ECNEICS*
2. ????? ???????? ??? ?? ?????? ??????? ?? ?? ?? ?? ??? ?????? (???????) ?? ???? ?? ???? ??? ??????? ???
??????? ?????? ???? ?? ??? ?? ????? ???? ?????? ?
(A) ??????????? (B) ?????? ??
(C) ??????? (D) ????????????
3. ???? ????? ?? ???? ???? ?? pH ?? ??? ? (?????) ?? :
(A) 6?1 ?? 6?8 (B) 6?5 ?? 7?3
(C) 7?0 ?? 7?8 (D) 7?5 ?? 8?1
4. ???????? ??????
?? ??? ??????????? ???? ?? ????? ????? ???? ?? ?? ?????? :
(A) ??????????? ?? ???? ?? ????? ????????? ??? ????? ??? ???????? ?? ?
(B) ??????????? ?? ?? ???? (III) ??? ?? ?? ?? ????? ??? ????? ???? ??, ?? ????? ????
?????? ? ???? ?? ?
(C) ??????????? ?? ?? ???? (III) ??? ?? ?? ?? ????? ??? ????? ???? ??, ?? ?????
??????????? ??? ???? ??????? ???? ?? ?? ??? ?? ??????? ?? ?????? ?? ?
(D) ??????????? ?? ?????? ???? ?? ?????? ?? ?? ?? ???? ? ??? ???? ?? ??????????? ??
???? ?? ????? ?????? ??? ???? ?? ?? ??? ?? ??????? ?? ???? ?? ?? ?
5. ?? ????? ? ?????? ????
? ?? ??? ??? ? ???? ?? ???? ????? ???? (??? ???? ???? ????) ??? ??????? ?? ?????? ??? ??
??
?? ???? ?? ????? ?-????? ? ?????? ????? ??? ?? ? ???? ????: ?? ?? ?????? ?????? ??? ???? ???, ??? ??? ????
??? :
(A) ???? ?? ?? ???? (B) ???? ?? ??? ? ?
(C) ???? ?? ???? ?? (D) ??? ?? ?? ???? ??
6. ?
???? ?? ????? ?? ??? ? ???? ?? ?????? ?????? ?????? ???? ?? ?
(A) ?
???? ??? CO
2
?? ??????
(B) ????? ???????? ?
? ??? ???
(C) ?
???? ??? O
2
??
??????
(D) ??? ?? ?????? ???
? ??? ?? ?? ????? ?
Page 5
*31/2/1* 1 # [ P.T.O. ]
*ECNEICS*
??????????? ????? ? -???? ??? ?? ?????-???????? ??
???-????? ?? ???? ? ?????? ?
Candidates must write the Q.P. Code
on the title page of the answer-book.
Series : GHF2E
SET~1
????? ? -???? ???
Q.P. Code
??? ?
?.
Roll No.
???
NOTE
(I) ????? ????? ?? ??? ??? ?? ????? ? -???? ??? ?????? ?????
27 ??? ?
(I) Please check that this question paper
contains 27 printed pages.
(II) ????? ? -???? ??? ??????? ????? ?? ?? ???? ??
????? ? -???? ??? ?? ??????????? ????? -???????? ??
???-????? ?? ?????? ?
(II)
Q.P. Code given on the right hand
side of the question paper should be
written on the title page of the
answer-book by the candidate.
(III) ????? ????? ?? ??? ??? ?? ????? ? -???? ??? 39 ????? ?
??? ?
(III) Please check that this question paper
contains 39 questions.
(IV) ? ? ??? ????? ? ?? ???? ? ????? ???? ???? ??
????, ????? -????? ?? ??? ??? ???? ?? ????? ?
?? ??? ??
??? ???? ? ????? ?
(IV)
Please write down the Serial
Number of the question in the
answer-book at the given place
before attempting it.
(V) ?? ????? ? -???? ?? ????? ?? ???? 15 ????? ??
??? ????? ??? ?? ? ????? ? -???? ?? ?????? ????????
??? 10.15 ??? ????? ????? ? 10.15 ??? ??
10.30 ??? ?? ??????????? ???? ????? ? -???? ??
??????? ?? ?? ????? ?? ????? ?? ????? -????????
?? ??? ????? ???? ???????? ?
(V)
15 minute time has been allotted to
read this question paper. The
question paper will be distributed
at 10.15 a.m. From 10.15 a.m. to
10.30 a.m., the candidates will
read the question paper only and
will not write any answer on the
answer-book during this period.
???????
SCIENCE
????????? ??? : 3 ????? ???? ??? ?
?? : 80
Time allowed : 3 hours Maximum Marks : 80
31/2/1
#
*31/2/1* 2 #
*ECNEICS*
???????? ?? ?????? ?:
?? ?? ?? ? ? ?? ??????? ?? ???? ????? ??? ?? ???? ? ?? ???? ???? ?? ?? ?? ? ????? :
(i) ?? ????? ? -???? ??? ?? 39 ????? ? ??? ? ????????? ? ?? ???? ??? ?
(ii) ?? ????? ?-???? ????? ?? ??? ??? ?? ????? ???? ??? ?? – ?,??,??,?? ??
? ? ?
(iii) ????? ?? – ????? ? ?
??? ?? 1??? 20 ?? ????? ??? ??? ?????? ?? ????? ? ??? ? ???????? ????? ? 1 ?
?? ?? ?? ?
(iv) ????? ?? – ????? ? ?
??? ?? 21??? 26 ?? ??? ??-??????? ?????? ?? ????? ? ??? ? ???????? ????? ? 2 ?
???? ??
?? ? ?? ????? ??? ?? ????? 30 ?? 50 ???????? ??? ????? ???? ????? ?
(v) ????? ?? – ????? ? ?
??? ?? 27 ?? 33 ?? ??-??????? ?????? ?? ????? ? ??? ? ????? ?? ? ????? ? 3 ?
???? ?? ?? ? ??
????? ??? ?? ????? 50 ?? 80 ??? ????? ??? ????? ???? ????? ?
(vi) ????? ?? – ????? ? ?
??? ?? 34 ?? 36 ?? ??????-??????? ?????? ?? ????? ? ??? ? ????? ?? ? ????? ? 5 ?
???? ?? ?? ?
?? ????? ??? ?? ????? 80 ?? 120 ??? ????? ??? ????? ???? ????? ?
(vii) ????? ?? – ????? ? ?
??? ?? 37 ?? 39 ?? 3 ????? -??????? /?????? -??? ???? ??????? ?? ???? ??
??? ??
4 ?
???? ?? ????? ? (??-????? ??? ????) ??? ?
(viii) ????? ? -???? ??? ????? ????? ? ???? ?????? ??? ?? ? ??????, ??? ????? ??? ?
????? ????? ? ????? ?? ??? ? ?? ??????
?? ????? ??? ??? ??? ?? ?? ?????? ?? ????? ??????? ?
???? ? $
????? ? ?
??? ?? 1 ?? 20 ?? ???????? ??? ????? ? ??? ? ????? ?? ??? ?? ?????? ?? ??? ?? ? ???????? ????? ? ??? ?????
?? ??? ????? ??? ??? ?? ???? ???? ????? ? ????? ?? ? ? ? ? 20 ?1=20
1. ???? ??? ??? ??????? ??? ?? ??? ?? ??? ???????? ????????? ??????? ???? ??? ?
??????? ?????????
?????? ??? -?? ?? ?
(A) CH
4
+ O
2
? ? ? CO
2
+ 2H
2
O
(B) CH
4
+ 2O
2
? ? ? 2CO
2
+ 2H
2
O + ????
(C) CH
4
+ 2O
2
? ? ? CO
2
+ 2H
2
O
(D) CH
4
+ 2O
2
? ? ? CO
2
+ 2H
2
O + ????
*31/2/1* 3 # [ P.T.O. ]
*ECNEICS*
General Instructions :
Read the following instructions very carefully and strictly follow them :
(i) This question paper comprises 39 questions. All questions are compulsory.
(ii) This question paper is divided into five sections – A, B, C, D and E.
(iii) Section A – Questions No. 1 to 20 are Multiple Choice Questions. Each
question carries 1 mark.
(iv) Section B – Questions No. 21 to 26 are Very Short Answer type questions.
Each question carries 2 marks. Answer to these questions should be in the
range of 30 to 50 words.
(v) Section C – Questions No. 27 to 33 are Short Answer type questions. Each
question carries 3 marks. Answer to these questions should in the range of
50 to 80 words.
(vi) Section D – Questions No. 34 to 36 are Long Answer type questions. Each
question carries 5 marks. Answer to these questions should be in the range of
80 to 120 words.
(vii) Section E – Questions No. 37 to 39 are of 3 source-based/case-based units of
assessment carrying 4 marks each with sub-parts.
(viii) There is no overall choice. However, an internal choice has been provided in
some sections. Only one of the alternatives has to be attempted in such
questions.
SECTION A
Questions No. 1 to 20 are Multiple Choice Questions. Only one of the choices is
correct. Select and write the most appropriate option out of the four options given
for each. 20 ?1=20
1. The correct balanced chemical equation showing exothermic reaction in
which natural gas burns in air is :
(A) CH
4
+ O
2
? ? ? CO
2
+ 2H
2
O
(B) CH
4
+ 2O
2
? ? ? 2CO
2
+ 2H
2
O + Energy
(C) CH
4
+ 2O
2
? ? ? CO
2
+ 2H
2
O
(D) CH
4
+ 2O
2
? ? ? CO
2
+ 2H
2
O + Energy
*31/2/1* 4 #
*ECNEICS*
2. ????? ???????? ??? ?? ?????? ??????? ?? ?? ?? ?? ??? ?????? (???????) ?? ???? ?? ???? ??? ??????? ???
??????? ?????? ???? ?? ??? ?? ????? ???? ?????? ?
(A) ??????????? (B) ?????? ??
(C) ??????? (D) ????????????
3. ???? ????? ?? ???? ???? ?? pH ?? ??? ? (?????) ?? :
(A) 6?1 ?? 6?8 (B) 6?5 ?? 7?3
(C) 7?0 ?? 7?8 (D) 7?5 ?? 8?1
4. ???????? ??????
?? ??? ??????????? ???? ?? ????? ????? ???? ?? ?? ?????? :
(A) ??????????? ?? ???? ?? ????? ????????? ??? ????? ??? ???????? ?? ?
(B) ??????????? ?? ?? ???? (III) ??? ?? ?? ?? ????? ??? ????? ???? ??, ?? ????? ????
?????? ? ???? ?? ?
(C) ??????????? ?? ?? ???? (III) ??? ?? ?? ?? ????? ??? ????? ???? ??, ?? ?????
??????????? ??? ???? ??????? ???? ?? ?? ??? ?? ??????? ?? ?????? ?? ?
(D) ??????????? ?? ?????? ???? ?? ?????? ?? ?? ?? ???? ? ??? ???? ?? ??????????? ??
???? ?? ????? ?????? ??? ???? ?? ?? ??? ?? ??????? ?? ???? ?? ?? ?
5. ?? ????? ? ?????? ????
? ?? ??? ??? ? ???? ?? ???? ????? ???? (??? ???? ???? ????) ??? ??????? ?? ?????? ??? ??
??
?? ???? ?? ????? ?-????? ? ?????? ????? ??? ?? ? ???? ????: ?? ?? ?????? ?????? ??? ???? ???, ??? ??? ????
??? :
(A) ???? ?? ?? ???? (B) ???? ?? ??? ? ?
(C) ???? ?? ???? ?? (D) ??? ?? ?? ???? ??
6. ?
???? ?? ????? ?? ??? ? ???? ?? ?????? ?????? ?????? ???? ?? ?
(A) ?
???? ??? CO
2
?? ??????
(B) ????? ???????? ?
? ??? ???
(C) ?
???? ??? O
2
??
??????
(D) ??? ?? ?????? ???
? ??? ?? ?? ????? ?
*31/2/1* 5 # [ P.T.O. ]
*ECNEICS*
2. The warning sign shown in the given figure must invariably be
displayed/pasted on the containers which contain hydroxide of :
(A) Aluminium (B) Calcium
(C) Sodium (D) Magnesium
3. The body of human beings works within the pH range of :
(A) 6?1 to 6?8 (B) 6?5 to 7?3
(C) 7?0 to 7?8 (D) 7?5 to 8?1
4. Aluminium powder is used in thermit welding because :
(A) Its reaction with iron is highly exothermic.
(B) When it is heated with iron (III) oxide, molten iron is obtained.
(C) When it is heated with iron (III) oxide, molten aluminium oxide is
obtained to join railway tracks.
(D) Its melting point is low as compared to iron and a molten alloy of
iron and aluminium is formed on heating which is used to join
railway tracks.
5. Two metals zinc and tin are dissolved separately in definite proportions
in molten copper (the primary metal) to obtain two different alloys
respectively known as :
(A) Bronze and Brass (B) Brass and Solder
(C) Brass and Bronze (D) Solder and Bronze
6. The opening and closing of stomata is regulated by :
(A) CO
2
concentration in stomata
(B) Temperature in guard cells
(C) O
2
concentration in stomata
(D) Amount of water in guard cells
Read MoreFAQs on CBSE Science Past Year Paper with Solutions - 2025 (Set - 2)
| 1. What are the key subjects covered in the CBSE Class 10 Science syllabus? |  |
Ans. The key subjects covered in the CBSE Class 10 Science syllabus include Physics, Chemistry, and Biology. Topics under Physics include light, electricity, and magnetism. In Chemistry, students study chemical reactions, acids, bases, and salts. Biology covers life processes, reproduction, and environmental science. These subjects are designed to provide a comprehensive understanding of basic scientific principles and their real-life applications.
| 2. How can students effectively prepare for the CBSE Class 10 Science exam? | |
Ans. Students can effectively prepare for the CBSE Class 10 Science exam by following a structured study plan. This includes reviewing the syllabus, understanding key concepts, practicing previous year question papers, and taking mock tests. Additionally, students should focus on clearing their doubts, utilizing textbooks and reference materials, and engaging in group studies for better comprehension.
| 3. What types of questions are typically found in CBSE Class 10 Science past year papers? | |
Ans. The CBSE Class 10 Science past year papers typically include a variety of question types such as multiple-choice questions, short answer questions, and long answer questions. These questions assess students' understanding of scientific concepts and their ability to apply these concepts in problem-solving situations. Practical-based questions and experiments may also be included to evaluate hands-on skills.
| 4. Why is it important to solve past year papers for the CBSE Class 10 Science exam? | |
Ans. Solving past year papers for the CBSE Class 10 Science exam is important as it helps students familiarize themselves with the exam pattern and types of questions asked. It also aids in time management during the actual exam and boosts confidence. Analyzing mistakes made in past papers allows students to identify weak areas and focus on improving them.
| 5. What resources are recommended for studying CBSE Class 10 Science? | |
Ans. Recommended resources for studying CBSE Class 10 Science include the NCERT textbooks, which are aligned with the syllabus, as well as reference books that provide additional explanations and practice questions. Online platforms and educational websites can offer interactive learning tools and videos. Additionally, using study guides and revision notes can help in quick revisions before exams.
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