SOF NSO Sample Paper 2023 Class 10

SAMPLE PAPER SYLLABUS 2022-23 CLASS Total Questions : 50 10 Time : 1 hr. PATTERN & MARKING SCHEME Section (1) Logical Reasoning (2) Science (3) Achievers Section No. of Questions 10 35 5 SOF NATIONAL SCIENCE OLYMPIAD Marks per Ques. 1 1 3 SYLLABUS Section – 1 : Verbal and Non-Verbal Reasoning. Section – 2 : Chemical Reactions and Equations, Acids, Bases and Salts, Metals and Non-metals, Carbon and Its Compounds, Periodic Classification of Elements, Life Processes, Control and Coordination, Reproduction in Organisms, Heredity and Evolution, Light-Reflection and Refraction, Human Eye and Colourful World, Electricity, Magnetic Effects of Electric Current, Sources of Energy, Our Environment and Its Management. Section – 3 : Higher Order Thinking Questions - Syllabus as per Section – 2. LOGICAL REASONING 1. In a certain code language, ‘si po re’ means (A) 9 (B) 8 ‘book is thick’, ‘ti ma re’ means ‘bag is heavy’, (C) 2 (D) 7 ‘ka si’ means ‘interesting book’ and ‘de ti’ means 3. Which of the following figures will complete the ‘that bag’. Which of the following means ‘that given figure matrix? is interesting’ in that code language? (A) ka de re (B) ti po ka (C) de si re (D) ka re ma (A) 2. In the given figure, rectangle, square, circle and triangle represents the regions of wheat, (B) gram, maize and rice cultivation respectively. 3 1 ? 4 8 2 (C) 5 7 9 6 10 11 (D) Which area is cultivated by rice and maize only? SCIENCE 4. The given figure shows the phenomenon of which of the following options correctly lists the recombination of the spectrum of white light colour of marked rays? using two prisms. 1 2 3 4 5 6 (A) R V B Y I O White light (B) R V Y B O I 1 3 5 (C) V R B Y I O White light (D) V R Y B O I 2 5. A constant current of 3.0 A flows counter 6 clockwise in the circular coil P as shown in figure. 4 If V, I, B, Y, O and R denote violet, indigo, blue, yellow, orange and red colours respectively, then P Q Sample Paper | Class-10 | 1

What is the direction of the induced current in A greyish metallic deposit was found on both the coil Q on the right? strips. (A) Clockwise Which of the following could be metal X? (B) Counter clockwise (C) Out of the page (A) Cu (D) There is no induced current (B) Mg (C) Pb 6. Which of the following statements is true with (D) Fe respect to diamond ? (A) The carbon atoms are connected to each 8. Identify the given developmental stage of human other by metallic bonds. embryo and select the correct option regarding (B) In the diamond crystal, the carbon atoms it. are very loosely packed. (C) Each carbon atom in the crystal is surrounded by four other carbon atoms forming a rigid 3-D structure. (D) Diamond can be synthesised by subjecting pure carbon to very low pressure and temperature. Developmental Site of 7. Strips of metal X were dipped into two different stage implantation solutions as shown : (A) Blastocyst Uterine wall Metal X (B) Morula Uterine wall (C) Blastula Mid part of Fallopian tube (D) Gastrula Mid part of Fallopian Silver nitrate Zinc nitrate tube solution solution ACHIEVERS SECTION 9. Which of the following statements about the Ovulation occurs 15 given reaction are not correct? Fe2O3 + 3CO → 2Fe + 3CO2 10 Level in blood I. Fe2O3 is getting oxidised to Fe. P 5 II. Fe2O3 is acting as a reducing agent. Q III. CO is acting as a reducing agent. 0 5 10 15 20 25 28 Days IV. CO is getting reduced to CO2. (A) The uterine lining might not be sufficiently (A) III only (B) I, II and IV stable to support an implanted embryo. (C) II and IV (D) I and III (B) Levels of the hormone represented by graph 10. The given graph shows the hormonal changes P would be higher than normal. during a normal menstrual cycle. What would be (C) Fertilization of ovum would fail to occur. a likely consequence if the hormone represented (D) There would be no significant effect since by graph Q is lacking in an adult female? the functions of the hormones overlap. SPACE FOR ROUGH WORK ANSWERS 1. (A) 2. (C) 3. (B) 4. (B) 5. (D) 6. (C) 7. (B) 8. (A) 9. (B) 10. (A) 2 | Sample Paper | Class-10