CLASS
12
SAMPLE PAPER
2025-26 SOF NATIONAL
SCIENCE OLYMPIAD
Total Questions : 50 Time : 1 hr.
PATTERN & MARKING SCHEME
Section (1) Physics & Chemistry (2) Achievers Section (3) Mathematics
or
Biology
No. of Questions 25 5 20
Marks per Ques. 1 3 1
SYLLABUS
Section – 1 : Physics : Electricity and Magnetism, Electromagnetic Induction, Alternating current,
Electromagnetic waves, Optics, Modern Physics, Semiconductor Electronics.
Chemistry : Solutions, Electrochemistry, Chemical Kinetics, The d-and f-Block Elements,
Coordination Compounds, Haloalkanes and Haloarenes, Alcohols, Phenols and Ethers, Aldehydes,
Ketones and Carboxylic Acids, Amines, Biomolecules.
Section – 2 : Higher Order Thinking Questions - Syllabus as per Section – 1.
Section – 3 : Relations and Functions, Inverse Trigonometric Functions, Matrices and
Determinants, Continuity and Differentiability, Application of Derivatives, Integrals, Application of
Integrals, Differential Equations, Vector Algebra, Three Dimensional Geometry, Probability, Linear
Programming.
OR
Section – 3 : Reproduction, Genetics and Evolution, Biology in Human Welfare, Biotechnology,
Ecology.
PHYSICS AND CHEMISTRY
1. Match column I with column II and select the correct option.
Column I Column II
(Complex) (Hybridisation and magnetic moment)
(P) [Ni(CN)4]2– (I) sp3d2 and 4.89 B.M.
(Q) [CoF6]3– (II) d2sp3 and 0 B.M.
(R) [NiCl4] 2–
(III) dsp2 and 0 B.M.
(S) [Co(NH3)6]3+ (IV) sp3 and 2.83 B.M.
(A) (P) - (III), (Q) - (I), (R) - (II), (S) - (IV) (B) (P) - (III), (Q) - (I), (R) - (IV), (S) - (II)
(C) (P) - (IV), (Q) - (I), (R) - (III), (S) - (II) (D) (P) - (IV), (Q) - (II), (R) - (III), (S) - (I)
2. At 298 K, the values of Henry's law constant KH for the gases (P), (Q) and (R) in
water are given as 71.18, 1.67 and 41.85 kbar respectively.
Which of the given statements is/are not correct?
I. (P) has the highest solubility in water at a given pressure.
II. The pressure of a 55.5 molal solution of (Q) is 1.5 × 10–3 bar.
Sample Paper | Class-12 | 1
12
SAMPLE PAPER
2025-26 SOF NATIONAL
SCIENCE OLYMPIAD
Total Questions : 50 Time : 1 hr.
PATTERN & MARKING SCHEME
Section (1) Physics & Chemistry (2) Achievers Section (3) Mathematics
or
Biology
No. of Questions 25 5 20
Marks per Ques. 1 3 1
SYLLABUS
Section – 1 : Physics : Electricity and Magnetism, Electromagnetic Induction, Alternating current,
Electromagnetic waves, Optics, Modern Physics, Semiconductor Electronics.
Chemistry : Solutions, Electrochemistry, Chemical Kinetics, The d-and f-Block Elements,
Coordination Compounds, Haloalkanes and Haloarenes, Alcohols, Phenols and Ethers, Aldehydes,
Ketones and Carboxylic Acids, Amines, Biomolecules.
Section – 2 : Higher Order Thinking Questions - Syllabus as per Section – 1.
Section – 3 : Relations and Functions, Inverse Trigonometric Functions, Matrices and
Determinants, Continuity and Differentiability, Application of Derivatives, Integrals, Application of
Integrals, Differential Equations, Vector Algebra, Three Dimensional Geometry, Probability, Linear
Programming.
OR
Section – 3 : Reproduction, Genetics and Evolution, Biology in Human Welfare, Biotechnology,
Ecology.
PHYSICS AND CHEMISTRY
1. Match column I with column II and select the correct option.
Column I Column II
(Complex) (Hybridisation and magnetic moment)
(P) [Ni(CN)4]2– (I) sp3d2 and 4.89 B.M.
(Q) [CoF6]3– (II) d2sp3 and 0 B.M.
(R) [NiCl4] 2–
(III) dsp2 and 0 B.M.
(S) [Co(NH3)6]3+ (IV) sp3 and 2.83 B.M.
(A) (P) - (III), (Q) - (I), (R) - (II), (S) - (IV) (B) (P) - (III), (Q) - (I), (R) - (IV), (S) - (II)
(C) (P) - (IV), (Q) - (I), (R) - (III), (S) - (II) (D) (P) - (IV), (Q) - (II), (R) - (III), (S) - (I)
2. At 298 K, the values of Henry's law constant KH for the gases (P), (Q) and (R) in
water are given as 71.18, 1.67 and 41.85 kbar respectively.
Which of the given statements is/are not correct?
I. (P) has the highest solubility in water at a given pressure.
II. The pressure of a 55.5 molal solution of (Q) is 1.5 × 10–3 bar.
Sample Paper | Class-12 | 1
