nbrc.ac.in Integrated Ph.D Entrance Exam Question Paper Sample : Institute of Bioinformatics & Applied Biotechnology

Organization : Institute of Bioinformatics and Applied Biotechnology
Exam : Integrated Ph.D Entrance Examination
Document Type : Sample Question Paper
Website : nbrc.ac.in

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Integrated Ph.D Entrance Exam :

Note : Sample questions are provided to give a general idea of the style of the questions that appear in the entrance test. These questions do not reflect the difficulty level of questions in the entrance test.

Related : Institute of Bioinformatics & Applied Biotechnology Ph.D Entrance Examination Question Paper Sample : www.pdfquestion.in/5513.html

PHYSICS

The infrared spectrum falls between:
(1) Radio waves and micro waves (2) Micro waves and visible region
(3) Visible and ultraviolet regions (4) Ultraviolet and x-rays

2. The colour of a star indicates its:
(1) Weight (2) Size
(3) Distance (4) Temperature

3. One star is going away from the Earth. Then the observer on the Earth will experience:
(1) Decrease in wave length (2) Increase in wave length
(3) No change in wave length (4) None of these

4. The terminal velocity of a spherical ball of radius r falling through a viscous liquid is proportional to:
(1) r (2) r2
(3) r3 (4) 1/r

5. A 200 W lamp is connected to 100 volts supply. The number of electrons passing through the lamp in one minute is(charge of an electron =1.6 X 10-19C):
(1) 1×1019 (2) 2×1015
(3) 7.5×1020 (4) 1×1012

Chemistry :
6. Which of the following type of metals are the most efficient catalysts?
(1) Alkali metal (2) Alkaline Earth metal
(3) Transition metals (4) Metals of p-block

7. The strongest bronsted base is:
(1) Clo –
(2) Clo –
(3) Clo– (4) Clo –

8. Mohr’s salt is prepared in warm distilled water by the reaction of (NH4)2SO4 and:
(1) FeSO4 (2) Fe2(SO4)3
(3) CaSO4 (4) ZnSO4

9. Which among the following is correct order of reactivity with water according to electro chemical series:
(1) Cu>Zn>Mg>K (2) K>Mg>Zn>Cu
(3) Mg>Zn>Cu>K (4) K>Zn>Mg>Cu

10. The first order rate constant for the decompostion of N2 O5 is 6.2 10 period for the decomposition in seconds is:
(1) 1117.7 (2) 111.7
(3) 223.4 (4) 1609

Biology :
11. Which is not a root:
(1) Potato (2) Carrot
(3) Sweet Potato (4) Raddish

12. Stilt roots are found in:
(1) Rice (2) Sugarcane
(3) Groundnut (4) Gram

13. RIBOSOMES are made up of:
(1) RNA and DNA (2) DNA and Protein
(3) RNA and Protein (4) DNA alone

14. Nitrogen is available for plants in the form of:
(1) Nitrogen gas (2) Nitrogen dioxide
(3) Nitrate (4) Nitric acid

15. Karyokinesis means division of:
(1) Cytoplasm into two (2) Nucleus into two
(3) Protoplasm into two (4) None of these

16. The greatest source of variations is brought about by:
(1) Mutation (2) Chromosomal aberrations
(3) Meiosis (4) Poly ploidy

17. Cell wall of bacteria is made up of:
(1) Cellulose (2) Pectin
(3) Peptidoglycon (4) Chitin

18. Which of the following is not found in Rhizopus:
(1) Sporangia (2) Rhizoids
(3) Columella (4) Setae

19. When a pollen tube enters embryo sac by piercing through integument, it is called:
(1) Mesogamy (2) Porogamy
(3) Chalazogamy (4) Pseudogamy

20. The process in which virus are involved in sexual reproduction of bacteria called:
(1) Transduction (2) Transcription
(3) Transformation (4) Translation

Joint Entrance Screening Test (JEST – 2017) :
Physics :
1. It is found that when the resistance R indicated in the figure below is changed from 1 k to 10 k , the current flowing through the resistance R0 does not change. What is the value of the resistor R0?

2. You receive on average 5 emails per day during a 365-days year. The number of days on average
(A) More than 5
(B) More than 2
(C) 1
(D) None of the aboveon which you do not receive any emails in that year are

Part-B : 3-Mark Questions
1. A proton is confined in an infinite square well of width 4 femtometer. Calculate the energy of the photon emitted when the proton undergoes a transition from the excited state (n = 11) to the ground state (n = 1). Find the answer only up to the first four significant digits.

2. What is the smallest possible time necessary to freeze 2 kg of water at 273 K if a 50 watt motor is available and the outside air (hot reservoir) is at 300 K.

3. A bead slides along a smooth wire bent in the shape of parabola z = cr2. The bead rotates in a circle of radius 10 cm, when the wire is rotating about its verticle symmetry axis with angular velocity 10 radians/s. Take g = 10 m/s. Find the value of c.

4. A 5 V supply is across a series combination of a Si diode, a Ge diode and a 100 resistor. Find the power dissipated in the resistor.