STEM Olympiad Exam Instructions: Exam Format: Multiple-Choice Duration: 1 hours General Instructions: Materials: You are allowed to have with you during the exam, as specified by your instructor. Communication: You are not allowed to communicate with any other person during the exam. This includes talking, texting, or using any messaging apps. Technology: Ensure a stable internet connection and use a compatible browser. Make sure your device's battery is fully charged or plugged in. Plagiarism: Any form of plagiarism or cheating is strictly prohibited. This includes copying from external sources or using unauthorized aids. Browser Tabs: Please close all unnecessary browser tabs or windows, as the exam may be monitored. Exam Specifics: Question Format: This exam consists of multiple-choice questions. Number of Questions: There are a total of 36 questions in this exam. Scoring: Basic Section question is worth 2 points and Performer Section is worth 4 Points. The total exam score is 80. Submission: Once you answer all questions, click the "Submit" button to finalize your answers. Navigation: You can navigate between questions using the provided navigation buttons Please follow these instructions carefully during the online exam. If you have any concerns or technical issues, contact the designated support person or email address provided for assistance. Good luck! 1. Secction-A Basic Section None 2. Name an organism with a single chromosome and cell division via budding or fission. Bacteria Eukaryotes Primitive Organism Prokaryotes None 3. The only connective tissue without fibroblasts is areolar connective tissue bone cartilage blood None 4. Which of these is not an ear ossicle? hammer anvil meatus stirrup None 5. How is floatation distinguished from sinking based on the description given ? Floatation occurs at the bottom of a liquid, while sinking happens at the top. Floatation involves staying on the surface, while sinking refers to going to the bottom. Floatation and sinking are interchangeable terms for the same phenomenon. Floatation and sinking both describe objects that remain stationary in a liquid. None 6. Who proposed the planetary model of an atom? J.J. Thomson Ernest Rutherford Niels Bohr James Chadwick None 7. Which of the following algorithms is primarily used for dimensionality reduction? K-Nearest Neighbors (KNN) Support Vector Machines (SVM) Principal Component Analysis (PCA) Random Forests None 8. What is the output of the following code snippet? 10' 20' None' Error' None 9. In the context of backpropagation, which of the following statements is true? Backpropagation calculates the loss of the network and adjusts weights based on this loss. Backpropagation is used to initialize weights randomly. Backpropagation only updates weights in the output layer. Backpropagation is responsible for predicting the output of the network. None 10. In the context of the AI project cycle, what is "data wrangling"? The process of collecting data from various sources. The task of cleaning and transforming raw data into a usable format. The creation of data storage solutions. The process of visualizing data for exploratory analysis. None 11. If the distance between the earth and the sun doubles, what would be the duration of the year? 365 days 366 days 730 days 1032 days None 12. What is the ratio of the average acceleration during the intervals OA and AB in the velocity-time graph as shown below? 1/2 1/3 1 3 None 13. A bird flies with a speed of 10 km/hr and a car moves with uniform speed 8 km/hr. Both start from B to A at the same instant (BA = 40 km). The bird after reaching A flies back immediately to meet the approaching car. Once it reaches the car, it flies back to A. The bird repeats this until both the car and the bird reach A simultaneously. What is the total distance flown by the bird? 80 km 50 km 40 km 30 km None 14. What is the major mineral present in phosphate rock? None 15. One term in the number series is wrong. Find out the wrong term. 8, 14, 26, 48, 98, 194, 386 14 48 98 194 None 16. Statements : No mat is fan. Some fans are cars. All cars are shirts. Conclusions: I. All mats are cars. II. All shirts are cars. III. Some shirts are fans. IV. No shirt is a mat. Only either II or IV and III follow. Only I and II follow Only IV follow Only III follow None 17. Which figure is different from others? 1 2 3 4 None 18. A ball moves in a frictionless inclined table without slipping. The work done by the table surface on the ball is Negative Zero Positive None of the options None 19. A boat having a length 3 m and the breadth 2 m is floating on a lake. The boat sinks by 1 cm when a man gets on it. The mass of than man is : 12 kg 60 kg 72 kg 96 kg None 20. n 5 7 1 3 None 21. . Rita and Meeta both are having lunch boxes of a cuboid shape. Length and breadth of Rita’s lunch box are 10 % more than that of Meeta’s lunch box, but the depth of Rita’s lunch box is 20 % less than that of Meeta’s lunch box. The ratio of the capacity of Rita’s lunch box to that of Meeta’s lunch box is ; 11:15 15:11 121:125 125:121 None 22. If AB = x + 3, BC = 2x and AC = 4x – 5, then for what value of ‘x’, B lies on AC? 2 3 5 8 None 23. A small disc of radius r is cut from a disc of radius R. The weight of the disc which now has a hole in it, is reduced to 24/25of the original weight. If R=xr, what is the value of x ? 4 4.5 24 None of these None 24. An aircraft executes a horizontal loop at a speed of 720 km/h with its wings banked at 15°. What is the radius of the loop? 15 km 23.567 km 12.781 km 14 km None 25. Find the remainder when 67^99 nis divided by 7. 4 6 1 2 None 26. After how many places of decimal, will the decimal expansion of the rational number 572456 terminate? 4 6 07-Jan 08-Jan None 27. Study the following bar graph and the table carefully and answer the questions given below: Time Taken (in hours) by 6 Vehicles on Two Different Days The distance travelled by vehicle F on Day 2 was approximately what percent of the distance travelled by it on Day 1 ? 80% 65% 90% 95% None 28. Which of the following non-metals is a gas at room temperature? Sulphur Bromine Iodine Carbon None 29. Which of the following statements are correct about meristematic tissues? Composed of cells that are incapable of cell division Composed of a single type of cell It is composed of cells that are able to perform cell division All the above None 30. An electric heater of rating 1000 W is used for 5 hrs per day for 20 days. What is the electrical energy utilized? 100 KWh 200 KWh 120 KWh 500 KWh None 31. Which of the following cell organelles is involved in the breakdown of organic matter? Lysosomes Cytoplasm Golgi bodies Mitochondria None 32. What type of mixture is steel? Alloy Suspension Solution Heterogeneous None 33. A is the son of C while C and Q are the sisters to one another. Z is the mother of Q. If P is the son of Z, Which one of the following statements is correct? Q is the grandfather of A P is the maternal uncle of A P is the cousin of A Z is the brother of C. None 34. SECTIONPERFORMERS SECTION None 35. Which figure is similar to question figure? 1 2 3 4 None 36. Find the missing number 14 44 62 51 None 37. The following bar chart gives the growth percentage in the number of households in middle, upper-middle and high-income categories in the four regions for the period between 1987-88 and 1994-95. Rs 50 lakh Rs 500 million Rs 300 million Cannot determined None 38. In a normal environment, why does a bowling ball and feather hit the ground at different times when dropped from the same height ? They don’t, they hit the ground at the same time . One is more dense than the other One is heavier than the other. Air resistance. 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