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Friday, June 8, 2012

Geology Joint UGC-CSIR (JRF) Examination


Geology Joint UGC-CSIR (JRF) Examination
Objective Geology Sample Paper
1. Isotopes of same elements have
(a) Same atomic number but different masses
(b) Same chemical properties but different atomic numbers
(c) Different masses and different atomic numbers
(d) Different chemical properties and same atomic numbers
Answer (b)

2. Mass number of a substance represents the sum
of total number of
(a)    Protons and neutrons in an atom
(b)   Protons and electrons in an atom
(c)    Neutrons and electrons in an atom
(d)   Protons and neutrons in a nucleus
Answer (d)

3. Moderator in nuclear plants is used to
(a) Reduce temperature
(b) Extract heat from nuclear reaction
(c) Control the reaction
(a)    Cause collision with the fast moving
neutrons to reduce their speed
Answer (d)

4. Nuclear energy is measured as
(a) MeV
(b) Curie
(c) Farads
(d) MW
Answer (a)

5. Breeder reactor has conversion ratio of
(a) Unity 
(b) More than unity
(c) Less than unity
(d) Zero
Answer (b)

6. Fast breeder reactor uses
(a) Boiler
(b) Direct cycle of coolant system
(c) Double circuit system of coolant cycle
(d) Multi pass system
Answer (c)

7. Nuclear reactor which does not need a heat
exchanger for generation of steam, is
(a) Gas cooled
(b) Liquid metal cooled
(c) Pressurised water
(d) Boiling water
Answer (d)


8. Number of isotopes of hydrogen are
(a) 1
(b) 2
(c) 3
(d) 4
Answer (b)

9. Reflector in nuclear plants is used to
(a) Return the neutrons back into the core
(b) Shield the radioctivity completely
(c) Check pollution
(d) Conserve energy
Answer (a)

10. Ferrite material is
(a) Most fissionable material
(b) Basic fuel for nuclear plants
(c) Basic raw material for nuclear neutrons
(d) The material which absorbs neutrons and
undergoes spontaneous changes leading to
 the formation of fissionable material
Answer (d)

11. Lightest particle is
(a) Nucleus
(b) Electron
(c) Proton
(d) Meson
Answer (b)

12. In nuclear fission, each neutron that causes fission releases
(a) No new neutron
(b) Atleast one new neutron
(c) One new neutron
(d) More than one few neutrons
Answer (d)

13. Gas cooled reactor uses which of the following
materials as moderator and coolant
(a) Graphite, CO2
(b) Graphite, air
(c) Heavy water, CO2
(d) Lead, H2
Answer (a)

14. A nuclear fission produces energy of following
order in MeV .
(a) 20 Mev                
(b) 200 Mev
(c) 2000 Mev           
(d) 20,000 Mev
Answer (b)


15. A nuclear fission is initiated when the critical
energy as compared to neutron binding energy
ofthe atoms is
(a) Same                   
(b) More
(c) Less                      
(d) None of the above
Answer (b)


16. Process by which a heavy nucleus is splitted
into two light nuclei is known as
(a) Splitting              
(b) Fission
(c) Fusion                  
(d) Disintegration
Answer (b)

17. Nuclear power plant at Tarapur has the reactor
(a) Fast breeder
(b) Pressurised water
(c) Boiling water
(d) Sodium graphite
Answer (c)

18. Ideally the neutron flux in reactor should be
(a) Maximum in centre and zero at side
(b) Maximum at side and zero in centre
(c) Uniform throughout
(d) Zero throughout
Answer (c)

19. A reactor capable of converting a ferrite
material into fissile isotopes is called 
(a) Regenerative reactor
(b) Fast breeder reactor
(c) Breeder reactor
(d) Boiling water reactor
Answer (a)

20. The risk of radioactive hazard is greatest in the
turbine with which of the following reactor?
(a) Pressurised water
(b) Boiling water
(c) Gas cooled
(d) Liquid metal cooled
Answer (b)

21. Electron-volt is the unit of
(a) Atomic power
(b) Energy
(c) Voltage
(d) Radio activity
Answer (b)

22. Unit of radio-activity is
(a) Electron-volt
(b) Electron-ampere
(c) Curie
(d) MeV
Answer (c)

23. Energy required to be applied to a radioactive
nucleus for the emission of a neutron is
(a) 1 MeV                 
(b) 2.4 MeV
(c) 4.3 MeV              
(d) 7.8 MeV
Answer (d)

24. Commonly used material for shielding is
(a) Lead or concrete
(b) Lead and tin
(c) Graphite or candmium
(d) Thick galvanised sheets
Answer (a)

26. Boiling water reactor employs
(a) Boiler
(b) Direct cycle of coolant system
(c) Double circuit system of coolant cycle
(d) Multi pass system
 Answer (b)

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