HBCSE Indian National Junior Science Olympiad Question Paper 2013
Name of the Organisation : HBCSE – Olympiads
Name of the Paper : Indian National Junior Science Olympiad Question Paper 2013
Year : 2013
Website : http://olympiads.hbcse.tifr.res.in/
Download Sample Question Paper : https://www.pdfquestion.in/uploads/8180science.pdf
Indian National Junior Science Olympiad Question Paper :
Instructions:
1. Please write your Name and Roll Number on top of this page in the space provided.
2. Before starting, please ensure that you have received a copy of this Question Paper containing a total of 26 pages including this page.
Related : HBCSE Indian National Chemistry Olympiad INChO 2016 : www.pdfquestion.in/13135.html
3. There are 75 multiple choice questions with 4 alternatives, out of which only 1 iscorrect. You get 4 mark for every correct answer and -1 mark for every wrong answer.
4. Four possible answers (A, B, C and D) are given and only one of the choices is the best. Choose this most appropriate choice and darken the appropriate bubble completely and properly in the answer sheet with blue / black pen.
5. Blank space have been provided in this Question Paper for rough work.
6. Computational tools such as calculators, mobiles, pagers, smart watches, slide rules, log tables etc. are not allowed.
7. You may take this Question Paper back with you. However you must return the following
(i) Candidates details with the attached Performance Card. Do not detach the Performance Card
(ii) The OMR answer sheet.
Kindly ll both (i) and (ii) carefully and return both before you leave.
Questions :
1. Which of the following ecosystems will exhibit maximum xation of carbon averaged over a year through photosynthesis?
A. Farm ecosystem.
B. Ocean ecosystem.
C. Rainforest ecosystem.
D. Pond ecosystem.
2. The human blood pigment Haemoglobin has maximum anity towards
A. NH3
B. CO
C. CO2
D. O2
3. Which of the following is a common character shown by both bryophytes and pteri- dophytes?
A. Semi-parasitic gametophytic stage.
B. Presence of vascular tissues.
C. Independent gametophytic and sporophytic generations.
D. Water is essential for fertilization.
4. Consider the following ecological pyramids
I. Pyramid of numbers.
II. Pyramid of biomass.
III. Pyramid of energy.
The one(s) which is / are always upright are
A. I only.
B. II and III only.
C. III only.
D. I and II only.
5. Respiratory quotient (R.Q.) is dened as the ratio of volume of CO2 evolved to the volume of O2 taken in during the respiration process. Value of R.Q. depends on the nature of respiratory substrate and to the extent to which this substance is broken
down into simpler products. Which of the following situation will give us the R.Q. value as innity?
A. Fats used as substrate under aerobic conditions.
B. Organic acid is used as a substrate under aerobic conditions.
C. Any type of substrate used under anaerobic conditions.
D. Any type of substrate used under aerobic conditions.
6. The following graph depicts the rate and extent of a person’s breathing just before exercise. Here V is the volume of air in lungs in dm3 and t is the time in seconds. Which of the following graph best depicts the rate and extent of breathing of the same person immediately after a period of exercise?
7. The following picture depicts the internal arrangement (anatomy) of bone struc- tures in the limbs of dierent organisms. Which of the following statement is the most valid inference that can be drawn from a careful analysis of the limbs of dif- ferent organisms in the diagram below?
A. Bones of limbs of all the organisms have similar basic plan there- fore may have common ancestor.
B. Bones of limbs of all the organisms have the same basic structure but dierent shapes, therefore bone expression is controlled only by the envi- ronmental factor.
C. Bones of limbs of all the organisms do not have similar bone structure therefore they may have evolved dierently.