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FIIT JEE INJSO Indian National Junior Science Olympiad Question Paper 2018 : fiitjee.com

Name of the Organisation :FIIT JEE Ltd
Name of the Paper : Indian National Junior Science Olympiad 2018 INJSO
Year : 2018
Document Type : Question Paper
Name of the Subject : Physics, Chemistry, Biology, Astronomy, Junior Science Olympiads
Website : http://www.fiitjee.com/DownLoads/Olympiad-Question-Papers-and-Solutions/17

FIIT JEE INJSO Question Paper

Every student aspiring to go through successive stages of the Olympiad programme must enroll for NSE. All students of Class XII or below (science stream) are eligible to appear for NSEs.

Related : FIIT JEE RMO Regional Mathematical Olympiad Question Paper 2018 : www.pdfquestion.in/29749.html

Sample Question Paper of FIIT JEE Indian National Junior Science Olympiad Examination 2018 Question Paper  and Answer key is now available in the official website of FIIT JEE Ltd

Instructions

** Write your roll number on top of this page in the space provided.
** Use only black pen to write your answers in the Answer Sheet provided. Do not use a pencil.
** Before starting, please ensure that you have received a copy of this Question paper containing a total of 20 pages (20 sides on 10 sheets including the first 2 cover pages for instructions and values of physical constants).

** In section A, there are 30 multiple choice questions with 4 alternatives, out of which only 1 is correct. You get 1 mark for every correct answer and –0.25 mark for every wrong answer.
** In Section B, there are 12 questions of total 60 marks.
** A blank page has been provided in the Answer sheet, for rough work.

** Write the answers in the answer sheet only.
** Calculator(s) and mobile phone(s) are not allowed.
** The answer Sheet must be returned to the invigilator. You may take this Question paper with you.

Download Questions Paper :
INJSO Paper : https://www.pdfquestion.in/uploads/injso1.pdf
Answer Key https://www.pdfquestion.in/uploads/injsokey.pdf

Model Questions

INJSO 2018
Date: 27th January 2018
Duration: 3 Hours
Maximum Marks: 90

Section – A

Questions 1 to 30 are Multiple Choice questions with every correct answer carrying 1 marks and every wrong answer carrying – 0.25 mark.
1. Natural water contains about 0.02% D2O (heavy water). When it is enriched to 20% (by volume) calculate the fraction of weight due to neutrons in 1 mole of water sample.
(a) 0.355
(b) 0.444
(c) 0.455
(d) 0.500

2. A piece of alloy of Al and Zn weighing 1.67 g was completely dissolved in acid and evolved 1.69 litre of hydrogen at NTP. What is the percentage of Al in the piece of alloy?
(a) 26.5%
(b) 48.5%
(c) 51.5%
(d) 73.5%

3. The DNA sequence of the genome of a virus is known and contains equal number of A, T G and C. The genome is composed of double stranded DNA molecule. It is 10kb in length. If one searches the genome for the presence of the following sequence 5‘ – AAAAAA – 3’/3 – TTTTTT – 5’, predict the number of such stretches that are likely to occur. (1 kb = 1000 base pairs).
(a) Two
(b) Eight
(c) Sixteen
(d) Thirty two

4. An astronaut has to burn 40 g of glucose in his body per hour to get the required energy. ind the amount of oxygen that would need to be carried in space to meet his energy requirement for thirty days.
(a) 10.2 kg
(b) 28.8 kg
(c) 30.7 kg
(d) 96.1 kg

5. A particle moves along positive X – axis with a velocity (in suitable unit) varying as (4 – 3t – t2) where t is time in seconds. Students draw following four conclusions.
(I) Initially the particle is at the origin
(II) Initial speed of the particle is zero
(III) The particle decelerate till t = 1s.
(IV) The speed of the particle goes on increasing after t = 1 sec
Therefore, conclusions
(a) (I) and (II) are sometimes correct (III) & (IV) are always correct
(b) (I), (III) and (IV) are always correct and (II) is sometimes correct
(c) (I), (III) and (iv) always correct, (II) is never correct
(d) (I) is sometimes correct, (II) is never correct, (III) and (IV) are always correct

6. Titration is carried out for 3 moles of a mixture of ferrous and ferric sulphate, which required 100mL of 2 M potassium permanganate in acidic medium. Hence the mole fraction of ferrous sulphate in the mixture is __________.
(a) 1/3
(b) 2/3
(c) 2/5
(d) 3/5

7. Many proteins of the chloroplast are encoded by genes in the nucleus. In these cases the RNA is transcribed in the nucleus, translated by the cytoplasmic ribosome and the protein ransported to the chloroplast. For such a protein how many membrane(s) does the protein cross to reach the thylakoid space (lumen) of the chloroplast?
(a) One
(b) Two
(c) Three
(d) Four

8. A ray of light passes through a thick glass sheet with some angle of incidence ? as shown. The refractive index of glass is _________
(a) Exactly d/DC
(b) Approximately d/DC
(c) Approximately d/AD
(d) Approximately AD/AC

9. A sample of clay was partially dried and then found to contain 60% silica and 8% water. The original sample of clay contained 15% water. Find the percentage of silica in the original sample.
(a) 52.3%
(b) 47.8%
(c) 55.5%
(d) 51.7%

10. A plant has pink flowers. When this plant was self pollinated, there were three types of progeny obtained; progeny with red flowers, pink flowers and white flowers that appeared in the ratio 1 : 2 : 1. From the given information how many alleles are involved in the formation of these flower colours?
(a) One
(b) Two
(c) Three
(d) Four

Section – B

Questions 31 to 42 are one questions. Marks are indicated in the brackets. Answer the questions only in the answer sheet provided.
Questions 31 :
(A) An ion with mass number 79 when placed between two electrically charged plates with potential difference 1 V gains energy of 2 eV and moves towards the positive plate. If the ion contains 25% more neutrons than the electrons, identify the ion. [Total = 3 marks]
(B) Trisha was given a silvery white metal (A) and she was asked to heat it in air. Trisha did that and observed that a white ash (X) is formed. Out of curiosity she dissolved the ash (X) in water and obtained a solution (Y). Trisha tested the solution (Y) using pH paper and found that it turned blue. (Y) is commonly used in dental work as a antimicrobial, and is the substance of choice of dentists for forming a protective layer known as an apical barrier. (Y) when reacts with chlorine gas gives (B), which is used as a toilet cleaner. To this solution (Y), she added dil sulphuric acid and obtained a white precipitate acid and obtained a white precipitate (Z). Help Trisha to identify A, B, Y, Z. Write balanced equations for all the reactions involved. [Total = 2 marks]

Questions 32 : [Total = 5 marks]
A point object is moved away from 5 cm to 90 cm along the principal axis of a concave mirror ofradius of curvature 60 cm. (Distances are from centre of the mirror). Using Cartesian sign convention, calculate image distances (v) for at least ten suitable objects distances (u) and tabulate the values. Plot a graph of v against u using the tabulated values with a proper choice of scales.

Questions 33 :
A sprint runner was running a 100 meter race. 10 min before starting his run is the race, he was given 200 ml of 5% glucose solution. [Assume M.W. of glucose = 180.0]. [Total = 5 marks]
(I) Calculate how many moles of glucose was given to the sprinter. [1.5]

(II) If 100% of the glucose molecules was absorbed into his body and were used for production of pyruvic acid, calculate the moles of pyruvic acid that will be produced from these glucose molecules. [0.5]

(III) 25% of the total pyruvic acids generated from these glucose molecules are in muscle tissues and they subsequently from lactic acid. Calculate the total moles of lactic acid produced fro these pyruvic acids. [0.5]

(IV) If all the pyruvic acid generated (including the muscles and other parts of body) undergo aerobic oxidation to produce CO2 and water, calculate the total moles of CO2 produced from these pyruvic acid.

(V) The figure above represents a pictorial representation of components of a cell. Based on the
information above predict the sits where these products are formed when glucose is
metabolized by anaerobic oxidation. [1.5]
i. The site of formation of pyruvic acid is ________________ in the cell.
ii. The site of lactic acid formation is _________________ in the cell.
iii. The site of oxidation of pyruvic acid of generation of end products such as CO2 and H2O is

Questions 34 :
A stable carbon nucleus has 6 protons and 6 neutrons and radius of 2.7 × 10–15 m. The six protons repel each other so that each proton experiences equal resultant force from the others which is also the minimum resultant repulsive force.

For the purpose of calculations, assume that the protons and neutrons are point particles and protons are point charges. Also assume that protons and neutrons get distributed inside or on the surface of sphere of radius given above. The nuclear force which gives nucleus its stability is NOT discussed in this question.

Note: A force F has its component at an angle ? given by F cos ? and in a direction perpendicular to the first (in the same plane), it is F sin ?.

Note: while expression a number in scientific notation, decimal point should be placed on digit after first non-zero digit and then multiplied by appropriate power of 10, as given in the constants on the front page. [Total = 5 marks]
(i) Draw a simple sketch or explain in few words the orientation of the protons in the nucleus when the above mentioned condition is satisfied. [1.0]
(ii) Obtain the expression for the resultant repulsive force on one proton due to the remaining protons. [1.0]
(iii) Calculate the magnitude of this resultant repulsive force. [1.0]
(iv) Calculate the attractive gravitational force on this proton due to the remaining protons under the condition stated above. [1.0]
(v) Calculate the approximate ratio of the repulsive electrostatic force to the attractive gravitational force. [0.5]
(vi) What is the direction of the resultant electrostatic repulsive force on this proton? [0.5]

Questions 35 :
(A) Veeni thermally decomposed 90g of potassium chlorate of 60% purity. The total gasproduced was allowed to react with hydrogen that was prepared by passing steam over hot magnesium metal. Calculate the amount magnesium required to produce just sufficient hydrogen for completion of the reaction. [Total = 2 marks]

(B) When a silvery grey powder of a solid (A) is mixed with a powder of solid (B) no reaction occurs. But if the mixture is ignited and lighted using magnesium ribbon a reaction occurs with evolution of large amount of heat forming product

(C) with settles down as liquid metal and the solid product. (D) formed floats on the liquid (C). (C) in solid from reacts with moisture to form rust. The amount of heat generated during the reaction is so high that the reaction is used in welding of electric conductors, joints in railway tracks. Based on this information, answer the following questions.
(I) Identify (A), (B), (C) and (D).
(II) Write the balanced chemical equation for the reaction. Name the type of reaction.
(III) If (A) reacts with air on heating what will be the nature of oxide formed?
(IV) Dos oxide of (A) react with aqueous NaOH and /or HCl. Give balance chemical equation/s. [Total = 3 marks]

Answer Key

1. C 11. C 21. A
2. D 12. C 22. C
3. A 13. D 23. B
4. C 14. C 24. D
5. D 15. C 25. B
6. A 16. D 26. A
7. C 17. B 27. A
8. B 18. B 28. D
9. C 19. B 29. C
10. B 20. A 30. A

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