Page 1 2011 GEOLOGY & GEOPHYSICS – GG GG : GEOLOGY AND GEOPHYSICS ONLINE Examination Duration : Three Hours Maximum Marks :100 Read the following instructions carefully. 1. Questions must be answered using computers provided by the GATE at the examination centers. Each computer shall run specialized examination software that permits a maximum of one answer to be selected for questions of multiple choice type. 2. Your answers shall be updated and saved on the server periodically and at the end of the examination. The examination will automatically stop once the duration of the examination is over. 3. There are a total of 65 questions carrying 100 marks. All questions are of multiple choice type. Each of these questions carries four choices for the answer labeled A, B, C and D. Only one of the four choices is the correct answer. 4. Apart from General Aptitude (GA), there are two parts: Part A and Part B. 5. Part A is common to both Geology and Geophysics candidates. Part A consists of 25 questions Q.1-Q.25 that carry 1-mark each. 6. Part B contains two sections: Section 1 (Geology) and Section 2 (Geophysics). Geology candidates will attempt questions in Section 1 only. Geophysics candidates will attempt questions in Section 2 only. Each of the sections (Section 1 and Section 2) consists of 30 questions (Q.26-Q.55) that carry 2-marks each. 7. Questions Q.48 – Q.51 (2 pairs) are common data questions and question pairs (Q.52, Q.53) and (Q.54, Q.55) are linked answer questions. The answer to the second question of the linked answer questions depends on the answer to the first question of the pair. If the first question in the linked pair is wrongly answered or is unattempted, then the answer to the second question in the pair will not be evaluated. 8. Questions Q.56 – Q.65 belong to General Aptitude (GA). Questions Q.56 – Q.60 carry 1-mark each, and questions Q.61 – Q.65 carry 2-marks each. 9. Unattempted questions will result in zero mark. Wrong answers will result in NEGATIVE marks. For Q.1–Q.25 and Q.56–Q.60, ? mark will be deducted for each wrong answer. For Q.26–Q.51 and Q.61– Q.65, ? mark will be deducted for each wrong answer. The question pairs (Q.52, Q.53), and (Q.54, Q.55) are questions with linked answers. There will be negative marks only for wrong answer to the first question of the linked answer question pair, i.e. for Q.52 and Q.54, ? mark will be deducted for each wrong answer. There is no negative marking for Q.53 and Q.55. 10. Calculator is allowed whereas charts, graph sheets or tables are NOT allowed in the examination hall. 11. Rough work can be done in the specified area only. 12. Candidates may use the back side of this page to record their answers for their own convenience. 13. To login, type your Registration Number and password as per instructions provided in the envelope. 14. In order to answer a question, you may select the question using the left side selection panel on the screen and choose the correct answer by clicking on the radio button next to the answer. The answered questions shall be indicated by a solid black ball on the selection panel. In order to change the answer, you may just click on another option. If you wish to leave a previously answered question unanswered, you may click on DESELECT ANSWER button. 15. You may also select questions using NEXT and PREVIOUS buttons. 16. You may also mark questions for reviewing later using MARK button. All marked questions are indicated by a rectangle in the selection panel. Questions which are answered but are marked for the review are indicated by a solid black rectangle and questions which are not answered but are marked for the review are indicated by an outlined rectangle in the selection panel. 17. You must sign this sheet and leave it with the invigilators at the end of the examination. DECLARATION I hereby declare that I have read and followed all the instructions given in this sheet. Paper Code: GG Registration No: _________________Name:______________________________ Signature GG Page 2 2011 GEOLOGY & GEOPHYSICS – GG GG : GEOLOGY AND GEOPHYSICS ONLINE Examination Duration : Three Hours Maximum Marks :100 Read the following instructions carefully. 1. Questions must be answered using computers provided by the GATE at the examination centers. Each computer shall run specialized examination software that permits a maximum of one answer to be selected for questions of multiple choice type. 2. Your answers shall be updated and saved on the server periodically and at the end of the examination. The examination will automatically stop once the duration of the examination is over. 3. There are a total of 65 questions carrying 100 marks. All questions are of multiple choice type. Each of these questions carries four choices for the answer labeled A, B, C and D. Only one of the four choices is the correct answer. 4. Apart from General Aptitude (GA), there are two parts: Part A and Part B. 5. Part A is common to both Geology and Geophysics candidates. Part A consists of 25 questions Q.1-Q.25 that carry 1-mark each. 6. Part B contains two sections: Section 1 (Geology) and Section 2 (Geophysics). Geology candidates will attempt questions in Section 1 only. Geophysics candidates will attempt questions in Section 2 only. Each of the sections (Section 1 and Section 2) consists of 30 questions (Q.26-Q.55) that carry 2-marks each. 7. Questions Q.48 – Q.51 (2 pairs) are common data questions and question pairs (Q.52, Q.53) and (Q.54, Q.55) are linked answer questions. The answer to the second question of the linked answer questions depends on the answer to the first question of the pair. If the first question in the linked pair is wrongly answered or is unattempted, then the answer to the second question in the pair will not be evaluated. 8. Questions Q.56 – Q.65 belong to General Aptitude (GA). Questions Q.56 – Q.60 carry 1-mark each, and questions Q.61 – Q.65 carry 2-marks each. 9. Unattempted questions will result in zero mark. Wrong answers will result in NEGATIVE marks. For Q.1–Q.25 and Q.56–Q.60, ? mark will be deducted for each wrong answer. For Q.26–Q.51 and Q.61– Q.65, ? mark will be deducted for each wrong answer. The question pairs (Q.52, Q.53), and (Q.54, Q.55) are questions with linked answers. There will be negative marks only for wrong answer to the first question of the linked answer question pair, i.e. for Q.52 and Q.54, ? mark will be deducted for each wrong answer. There is no negative marking for Q.53 and Q.55. 10. Calculator is allowed whereas charts, graph sheets or tables are NOT allowed in the examination hall. 11. Rough work can be done in the specified area only. 12. Candidates may use the back side of this page to record their answers for their own convenience. 13. To login, type your Registration Number and password as per instructions provided in the envelope. 14. In order to answer a question, you may select the question using the left side selection panel on the screen and choose the correct answer by clicking on the radio button next to the answer. The answered questions shall be indicated by a solid black ball on the selection panel. In order to change the answer, you may just click on another option. If you wish to leave a previously answered question unanswered, you may click on DESELECT ANSWER button. 15. You may also select questions using NEXT and PREVIOUS buttons. 16. You may also mark questions for reviewing later using MARK button. All marked questions are indicated by a rectangle in the selection panel. Questions which are answered but are marked for the review are indicated by a solid black rectangle and questions which are not answered but are marked for the review are indicated by an outlined rectangle in the selection panel. 17. You must sign this sheet and leave it with the invigilators at the end of the examination. DECLARATION I hereby declare that I have read and followed all the instructions given in this sheet. Paper Code: GG Registration No: _________________Name:______________________________ Signature GG 2011 GEOLOGY & GEOPHYSICS – GG PART A: COMMON TO BOTH GEOLOGY AND GEOPHYSICS CANDIDATES Q. 1 – Q. 25 carry one mark each. The increase in the length of a day on the earth at a rate of 2.4 milliseconds/100 years is due to (A) prolate tidal bulge (B) tidal friction Q.1 (C) spring tide (D) bodily earth tide Which of the following rocks contributes the highest amount of radioactive heat in the earth’s crust? Q.2 (A) basalt (B) gabbro (C) dunite (D) granite The P-wave velocity of the earth’s mantle at the Mohorovi ci c discontinuity is Q.3 (A) 5.5 km/s (B) 6.0 km/s (C) 7.0 km/s (D) 8.0 km/s Variation of the geomagnetic field observed over the last 500 years indicates that the dipole moment of earth’s magnetic field has been (A) decreasing (B) increasing Q.4 (C) constant (D) fluctuating randomly Which of the following statements is TRUE for the temperature variation with altitude in the earth’s atmosphere? (A) Temperature increases in both stratosphere and mesosphere (B) Temperature decreases in stratosphere and increases in mesosphere (C) Temperature increases in stratosphere and decreases in mesosphere Q.5 (D) Temperature decreases in both stratosphere and mesosphere The deflection of ocean currents in the northern and southern hemispheres is due to (A) thermohaline circulation (B) Coriolis effect Q.6 (C) El Nino effect (D) monsoon effect Tsunamis are (A) gravity waves (B) acoustic waves Q.7 (C) capillary waves (D) internal waves The planet which contributes maximum to the angular momentum of the solar system is Q.8 (A) Earth (B) Mars (C) Jupiter (D) Saturn The depositional feature that forms where a stream emerges from a mountainous region onto a plain is called Q.9 (A) alluvial fan (B) natural levee (C) delta (D) point bar GG Page 3 2011 GEOLOGY & GEOPHYSICS – GG GG : GEOLOGY AND GEOPHYSICS ONLINE Examination Duration : Three Hours Maximum Marks :100 Read the following instructions carefully. 1. Questions must be answered using computers provided by the GATE at the examination centers. Each computer shall run specialized examination software that permits a maximum of one answer to be selected for questions of multiple choice type. 2. Your answers shall be updated and saved on the server periodically and at the end of the examination. The examination will automatically stop once the duration of the examination is over. 3. There are a total of 65 questions carrying 100 marks. All questions are of multiple choice type. Each of these questions carries four choices for the answer labeled A, B, C and D. Only one of the four choices is the correct answer. 4. Apart from General Aptitude (GA), there are two parts: Part A and Part B. 5. Part A is common to both Geology and Geophysics candidates. Part A consists of 25 questions Q.1-Q.25 that carry 1-mark each. 6. Part B contains two sections: Section 1 (Geology) and Section 2 (Geophysics). Geology candidates will attempt questions in Section 1 only. Geophysics candidates will attempt questions in Section 2 only. Each of the sections (Section 1 and Section 2) consists of 30 questions (Q.26-Q.55) that carry 2-marks each. 7. Questions Q.48 – Q.51 (2 pairs) are common data questions and question pairs (Q.52, Q.53) and (Q.54, Q.55) are linked answer questions. The answer to the second question of the linked answer questions depends on the answer to the first question of the pair. If the first question in the linked pair is wrongly answered or is unattempted, then the answer to the second question in the pair will not be evaluated. 8. Questions Q.56 – Q.65 belong to General Aptitude (GA). Questions Q.56 – Q.60 carry 1-mark each, and questions Q.61 – Q.65 carry 2-marks each. 9. Unattempted questions will result in zero mark. Wrong answers will result in NEGATIVE marks. For Q.1–Q.25 and Q.56–Q.60, ? mark will be deducted for each wrong answer. For Q.26–Q.51 and Q.61– Q.65, ? mark will be deducted for each wrong answer. The question pairs (Q.52, Q.53), and (Q.54, Q.55) are questions with linked answers. There will be negative marks only for wrong answer to the first question of the linked answer question pair, i.e. for Q.52 and Q.54, ? mark will be deducted for each wrong answer. There is no negative marking for Q.53 and Q.55. 10. Calculator is allowed whereas charts, graph sheets or tables are NOT allowed in the examination hall. 11. Rough work can be done in the specified area only. 12. Candidates may use the back side of this page to record their answers for their own convenience. 13. To login, type your Registration Number and password as per instructions provided in the envelope. 14. In order to answer a question, you may select the question using the left side selection panel on the screen and choose the correct answer by clicking on the radio button next to the answer. The answered questions shall be indicated by a solid black ball on the selection panel. In order to change the answer, you may just click on another option. If you wish to leave a previously answered question unanswered, you may click on DESELECT ANSWER button. 15. You may also select questions using NEXT and PREVIOUS buttons. 16. You may also mark questions for reviewing later using MARK button. All marked questions are indicated by a rectangle in the selection panel. Questions which are answered but are marked for the review are indicated by a solid black rectangle and questions which are not answered but are marked for the review are indicated by an outlined rectangle in the selection panel. 17. You must sign this sheet and leave it with the invigilators at the end of the examination. DECLARATION I hereby declare that I have read and followed all the instructions given in this sheet. Paper Code: GG Registration No: _________________Name:______________________________ Signature GG 2011 GEOLOGY & GEOPHYSICS – GG PART A: COMMON TO BOTH GEOLOGY AND GEOPHYSICS CANDIDATES Q. 1 – Q. 25 carry one mark each. The increase in the length of a day on the earth at a rate of 2.4 milliseconds/100 years is due to (A) prolate tidal bulge (B) tidal friction Q.1 (C) spring tide (D) bodily earth tide Which of the following rocks contributes the highest amount of radioactive heat in the earth’s crust? Q.2 (A) basalt (B) gabbro (C) dunite (D) granite The P-wave velocity of the earth’s mantle at the Mohorovi ci c discontinuity is Q.3 (A) 5.5 km/s (B) 6.0 km/s (C) 7.0 km/s (D) 8.0 km/s Variation of the geomagnetic field observed over the last 500 years indicates that the dipole moment of earth’s magnetic field has been (A) decreasing (B) increasing Q.4 (C) constant (D) fluctuating randomly Which of the following statements is TRUE for the temperature variation with altitude in the earth’s atmosphere? (A) Temperature increases in both stratosphere and mesosphere (B) Temperature decreases in stratosphere and increases in mesosphere (C) Temperature increases in stratosphere and decreases in mesosphere Q.5 (D) Temperature decreases in both stratosphere and mesosphere The deflection of ocean currents in the northern and southern hemispheres is due to (A) thermohaline circulation (B) Coriolis effect Q.6 (C) El Nino effect (D) monsoon effect Tsunamis are (A) gravity waves (B) acoustic waves Q.7 (C) capillary waves (D) internal waves The planet which contributes maximum to the angular momentum of the solar system is Q.8 (A) Earth (B) Mars (C) Jupiter (D) Saturn The depositional feature that forms where a stream emerges from a mountainous region onto a plain is called Q.9 (A) alluvial fan (B) natural levee (C) delta (D) point bar GG 2011 GEOLOGY & GEOPHYSICS – GG Hanging valleys are formed by the geological action of Q.10 (A) river (B) glacier (C) ocean (D) wind The surface of discontinuity between older folded sedimentary strata and younger horizontal strata is known as (A) disconformity (B) parallel unconformity Q.11 (C) angular unconformity (D) nonconformity The hardest oxide mineral in the Mohs’ scale of hardness is Q.12 (A) corundum (B) topaz (C) quartz (D) diamond The dominant constituent of ultramafic rocks in the earth’s mantle is Q.13 (A) orthoclase (B) olivine (C) plagioclase (D) biotite A highly vesicular rock formed by solidification of viscous lava is Q.14 (A) tuff (B) obsidian (C) volcanic breccia (D) pumice The most suitable radioactive method for dating Holocene events is Q.15 (A) U?Pb (B) Sm ?Nd (C) Rb ?Sr (D) C-14 Which of the following stratigraphic units is NOT of Proterozoic age? (A) Tipam Group (B) Bhima Group Q.16 (C) Nallamalai Group (D) Semri Group Rampura ?Agucha in Rajasthan is known for the ore deposit of Q.17 (A) gold (B) tungsten (C) zinc (D) iron The geological age of the major hydrocarbon reservoir in the Bombay High oil field is Q.18 (A) Cretaceous (B) Holocene (C) Oligocene (D) Miocene The geophysical method for the exploration of disseminated sulfide deposits is (A) induced polarization (B) self- potential Q.19 (C) gravity (D) magnetic In a borehole, high pressure gas zone is identified by (A) sonic logging (B) resistivity logging Q.20 (C) temperature logging (D) density logging GG Page 4 2011 GEOLOGY & GEOPHYSICS – GG GG : GEOLOGY AND GEOPHYSICS ONLINE Examination Duration : Three Hours Maximum Marks :100 Read the following instructions carefully. 1. Questions must be answered using computers provided by the GATE at the examination centers. Each computer shall run specialized examination software that permits a maximum of one answer to be selected for questions of multiple choice type. 2. Your answers shall be updated and saved on the server periodically and at the end of the examination. The examination will automatically stop once the duration of the examination is over. 3. There are a total of 65 questions carrying 100 marks. All questions are of multiple choice type. Each of these questions carries four choices for the answer labeled A, B, C and D. Only one of the four choices is the correct answer. 4. Apart from General Aptitude (GA), there are two parts: Part A and Part B. 5. Part A is common to both Geology and Geophysics candidates. Part A consists of 25 questions Q.1-Q.25 that carry 1-mark each. 6. Part B contains two sections: Section 1 (Geology) and Section 2 (Geophysics). Geology candidates will attempt questions in Section 1 only. Geophysics candidates will attempt questions in Section 2 only. Each of the sections (Section 1 and Section 2) consists of 30 questions (Q.26-Q.55) that carry 2-marks each. 7. Questions Q.48 – Q.51 (2 pairs) are common data questions and question pairs (Q.52, Q.53) and (Q.54, Q.55) are linked answer questions. The answer to the second question of the linked answer questions depends on the answer to the first question of the pair. If the first question in the linked pair is wrongly answered or is unattempted, then the answer to the second question in the pair will not be evaluated. 8. Questions Q.56 – Q.65 belong to General Aptitude (GA). Questions Q.56 – Q.60 carry 1-mark each, and questions Q.61 – Q.65 carry 2-marks each. 9. Unattempted questions will result in zero mark. Wrong answers will result in NEGATIVE marks. For Q.1–Q.25 and Q.56–Q.60, ? mark will be deducted for each wrong answer. For Q.26–Q.51 and Q.61– Q.65, ? mark will be deducted for each wrong answer. The question pairs (Q.52, Q.53), and (Q.54, Q.55) are questions with linked answers. There will be negative marks only for wrong answer to the first question of the linked answer question pair, i.e. for Q.52 and Q.54, ? mark will be deducted for each wrong answer. There is no negative marking for Q.53 and Q.55. 10. Calculator is allowed whereas charts, graph sheets or tables are NOT allowed in the examination hall. 11. Rough work can be done in the specified area only. 12. Candidates may use the back side of this page to record their answers for their own convenience. 13. To login, type your Registration Number and password as per instructions provided in the envelope. 14. In order to answer a question, you may select the question using the left side selection panel on the screen and choose the correct answer by clicking on the radio button next to the answer. The answered questions shall be indicated by a solid black ball on the selection panel. In order to change the answer, you may just click on another option. If you wish to leave a previously answered question unanswered, you may click on DESELECT ANSWER button. 15. You may also select questions using NEXT and PREVIOUS buttons. 16. You may also mark questions for reviewing later using MARK button. All marked questions are indicated by a rectangle in the selection panel. Questions which are answered but are marked for the review are indicated by a solid black rectangle and questions which are not answered but are marked for the review are indicated by an outlined rectangle in the selection panel. 17. You must sign this sheet and leave it with the invigilators at the end of the examination. DECLARATION I hereby declare that I have read and followed all the instructions given in this sheet. Paper Code: GG Registration No: _________________Name:______________________________ Signature GG 2011 GEOLOGY & GEOPHYSICS – GG PART A: COMMON TO BOTH GEOLOGY AND GEOPHYSICS CANDIDATES Q. 1 – Q. 25 carry one mark each. The increase in the length of a day on the earth at a rate of 2.4 milliseconds/100 years is due to (A) prolate tidal bulge (B) tidal friction Q.1 (C) spring tide (D) bodily earth tide Which of the following rocks contributes the highest amount of radioactive heat in the earth’s crust? Q.2 (A) basalt (B) gabbro (C) dunite (D) granite The P-wave velocity of the earth’s mantle at the Mohorovi ci c discontinuity is Q.3 (A) 5.5 km/s (B) 6.0 km/s (C) 7.0 km/s (D) 8.0 km/s Variation of the geomagnetic field observed over the last 500 years indicates that the dipole moment of earth’s magnetic field has been (A) decreasing (B) increasing Q.4 (C) constant (D) fluctuating randomly Which of the following statements is TRUE for the temperature variation with altitude in the earth’s atmosphere? (A) Temperature increases in both stratosphere and mesosphere (B) Temperature decreases in stratosphere and increases in mesosphere (C) Temperature increases in stratosphere and decreases in mesosphere Q.5 (D) Temperature decreases in both stratosphere and mesosphere The deflection of ocean currents in the northern and southern hemispheres is due to (A) thermohaline circulation (B) Coriolis effect Q.6 (C) El Nino effect (D) monsoon effect Tsunamis are (A) gravity waves (B) acoustic waves Q.7 (C) capillary waves (D) internal waves The planet which contributes maximum to the angular momentum of the solar system is Q.8 (A) Earth (B) Mars (C) Jupiter (D) Saturn The depositional feature that forms where a stream emerges from a mountainous region onto a plain is called Q.9 (A) alluvial fan (B) natural levee (C) delta (D) point bar GG 2011 GEOLOGY & GEOPHYSICS – GG Hanging valleys are formed by the geological action of Q.10 (A) river (B) glacier (C) ocean (D) wind The surface of discontinuity between older folded sedimentary strata and younger horizontal strata is known as (A) disconformity (B) parallel unconformity Q.11 (C) angular unconformity (D) nonconformity The hardest oxide mineral in the Mohs’ scale of hardness is Q.12 (A) corundum (B) topaz (C) quartz (D) diamond The dominant constituent of ultramafic rocks in the earth’s mantle is Q.13 (A) orthoclase (B) olivine (C) plagioclase (D) biotite A highly vesicular rock formed by solidification of viscous lava is Q.14 (A) tuff (B) obsidian (C) volcanic breccia (D) pumice The most suitable radioactive method for dating Holocene events is Q.15 (A) U?Pb (B) Sm ?Nd (C) Rb ?Sr (D) C-14 Which of the following stratigraphic units is NOT of Proterozoic age? (A) Tipam Group (B) Bhima Group Q.16 (C) Nallamalai Group (D) Semri Group Rampura ?Agucha in Rajasthan is known for the ore deposit of Q.17 (A) gold (B) tungsten (C) zinc (D) iron The geological age of the major hydrocarbon reservoir in the Bombay High oil field is Q.18 (A) Cretaceous (B) Holocene (C) Oligocene (D) Miocene The geophysical method for the exploration of disseminated sulfide deposits is (A) induced polarization (B) self- potential Q.19 (C) gravity (D) magnetic In a borehole, high pressure gas zone is identified by (A) sonic logging (B) resistivity logging Q.20 (C) temperature logging (D) density logging GG 2011 GEOLOGY & GEOPHYSICS – GG The acceleration due to gravity (g) and universal gravitational constant (G) are related by the expression (M e and R e are the mass and radius of the earth, respectively) (A) e e GM g R ? (B) 2 e e GM g R ? Q.21 (C) e e GR g M ? (D) 2 e e GR g M ? The metamorphic facies diagnostic of subduction zone is Q.22 (A) hornblende hornfels (B) pyroxene hornfels (C) blueschist (D) granulite In a formation, if the density increases and elastic constants remain unchanged, then (A) both P and S wave velocities increase (B) P wave velocity increases and S wave velocity decreases (C) both P and S wave velocities decrease Q.23 (D) P wave velocity decreases and S wave velocity increases The Poisson ratio ( ? ) for rocks in terms of Lame’s constants ? and ? is Q.24 (A) 1 ? ? ? ? ? (B) ? ? ? ? ? ? (C) 1 2( ) ? ? ? ? ? (D) 2( ) ? ? ? ? ? ? In seismic exploration, ‘ground roll’ represents Q.25 (A) direct wave (B) surface wave (C) Stonely wave (D) shear wave GG Page 5 2011 GEOLOGY & GEOPHYSICS – GG GG : GEOLOGY AND GEOPHYSICS ONLINE Examination Duration : Three Hours Maximum Marks :100 Read the following instructions carefully. 1. Questions must be answered using computers provided by the GATE at the examination centers. Each computer shall run specialized examination software that permits a maximum of one answer to be selected for questions of multiple choice type. 2. Your answers shall be updated and saved on the server periodically and at the end of the examination. The examination will automatically stop once the duration of the examination is over. 3. There are a total of 65 questions carrying 100 marks. All questions are of multiple choice type. Each of these questions carries four choices for the answer labeled A, B, C and D. Only one of the four choices is the correct answer. 4. Apart from General Aptitude (GA), there are two parts: Part A and Part B. 5. Part A is common to both Geology and Geophysics candidates. Part A consists of 25 questions Q.1-Q.25 that carry 1-mark each. 6. Part B contains two sections: Section 1 (Geology) and Section 2 (Geophysics). Geology candidates will attempt questions in Section 1 only. Geophysics candidates will attempt questions in Section 2 only. Each of the sections (Section 1 and Section 2) consists of 30 questions (Q.26-Q.55) that carry 2-marks each. 7. Questions Q.48 – Q.51 (2 pairs) are common data questions and question pairs (Q.52, Q.53) and (Q.54, Q.55) are linked answer questions. The answer to the second question of the linked answer questions depends on the answer to the first question of the pair. If the first question in the linked pair is wrongly answered or is unattempted, then the answer to the second question in the pair will not be evaluated. 8. Questions Q.56 – Q.65 belong to General Aptitude (GA). Questions Q.56 – Q.60 carry 1-mark each, and questions Q.61 – Q.65 carry 2-marks each. 9. Unattempted questions will result in zero mark. Wrong answers will result in NEGATIVE marks. For Q.1–Q.25 and Q.56–Q.60, ? mark will be deducted for each wrong answer. For Q.26–Q.51 and Q.61– Q.65, ? mark will be deducted for each wrong answer. The question pairs (Q.52, Q.53), and (Q.54, Q.55) are questions with linked answers. There will be negative marks only for wrong answer to the first question of the linked answer question pair, i.e. for Q.52 and Q.54, ? mark will be deducted for each wrong answer. There is no negative marking for Q.53 and Q.55. 10. Calculator is allowed whereas charts, graph sheets or tables are NOT allowed in the examination hall. 11. Rough work can be done in the specified area only. 12. Candidates may use the back side of this page to record their answers for their own convenience. 13. To login, type your Registration Number and password as per instructions provided in the envelope. 14. In order to answer a question, you may select the question using the left side selection panel on the screen and choose the correct answer by clicking on the radio button next to the answer. The answered questions shall be indicated by a solid black ball on the selection panel. In order to change the answer, you may just click on another option. If you wish to leave a previously answered question unanswered, you may click on DESELECT ANSWER button. 15. You may also select questions using NEXT and PREVIOUS buttons. 16. You may also mark questions for reviewing later using MARK button. All marked questions are indicated by a rectangle in the selection panel. Questions which are answered but are marked for the review are indicated by a solid black rectangle and questions which are not answered but are marked for the review are indicated by an outlined rectangle in the selection panel. 17. You must sign this sheet and leave it with the invigilators at the end of the examination. DECLARATION I hereby declare that I have read and followed all the instructions given in this sheet. Paper Code: GG Registration No: _________________Name:______________________________ Signature GG 2011 GEOLOGY & GEOPHYSICS – GG PART A: COMMON TO BOTH GEOLOGY AND GEOPHYSICS CANDIDATES Q. 1 – Q. 25 carry one mark each. The increase in the length of a day on the earth at a rate of 2.4 milliseconds/100 years is due to (A) prolate tidal bulge (B) tidal friction Q.1 (C) spring tide (D) bodily earth tide Which of the following rocks contributes the highest amount of radioactive heat in the earth’s crust? Q.2 (A) basalt (B) gabbro (C) dunite (D) granite The P-wave velocity of the earth’s mantle at the Mohorovi ci c discontinuity is Q.3 (A) 5.5 km/s (B) 6.0 km/s (C) 7.0 km/s (D) 8.0 km/s Variation of the geomagnetic field observed over the last 500 years indicates that the dipole moment of earth’s magnetic field has been (A) decreasing (B) increasing Q.4 (C) constant (D) fluctuating randomly Which of the following statements is TRUE for the temperature variation with altitude in the earth’s atmosphere? (A) Temperature increases in both stratosphere and mesosphere (B) Temperature decreases in stratosphere and increases in mesosphere (C) Temperature increases in stratosphere and decreases in mesosphere Q.5 (D) Temperature decreases in both stratosphere and mesosphere The deflection of ocean currents in the northern and southern hemispheres is due to (A) thermohaline circulation (B) Coriolis effect Q.6 (C) El Nino effect (D) monsoon effect Tsunamis are (A) gravity waves (B) acoustic waves Q.7 (C) capillary waves (D) internal waves The planet which contributes maximum to the angular momentum of the solar system is Q.8 (A) Earth (B) Mars (C) Jupiter (D) Saturn The depositional feature that forms where a stream emerges from a mountainous region onto a plain is called Q.9 (A) alluvial fan (B) natural levee (C) delta (D) point bar GG 2011 GEOLOGY & GEOPHYSICS – GG Hanging valleys are formed by the geological action of Q.10 (A) river (B) glacier (C) ocean (D) wind The surface of discontinuity between older folded sedimentary strata and younger horizontal strata is known as (A) disconformity (B) parallel unconformity Q.11 (C) angular unconformity (D) nonconformity The hardest oxide mineral in the Mohs’ scale of hardness is Q.12 (A) corundum (B) topaz (C) quartz (D) diamond The dominant constituent of ultramafic rocks in the earth’s mantle is Q.13 (A) orthoclase (B) olivine (C) plagioclase (D) biotite A highly vesicular rock formed by solidification of viscous lava is Q.14 (A) tuff (B) obsidian (C) volcanic breccia (D) pumice The most suitable radioactive method for dating Holocene events is Q.15 (A) U?Pb (B) Sm ?Nd (C) Rb ?Sr (D) C-14 Which of the following stratigraphic units is NOT of Proterozoic age? (A) Tipam Group (B) Bhima Group Q.16 (C) Nallamalai Group (D) Semri Group Rampura ?Agucha in Rajasthan is known for the ore deposit of Q.17 (A) gold (B) tungsten (C) zinc (D) iron The geological age of the major hydrocarbon reservoir in the Bombay High oil field is Q.18 (A) Cretaceous (B) Holocene (C) Oligocene (D) Miocene The geophysical method for the exploration of disseminated sulfide deposits is (A) induced polarization (B) self- potential Q.19 (C) gravity (D) magnetic In a borehole, high pressure gas zone is identified by (A) sonic logging (B) resistivity logging Q.20 (C) temperature logging (D) density logging GG 2011 GEOLOGY & GEOPHYSICS – GG The acceleration due to gravity (g) and universal gravitational constant (G) are related by the expression (M e and R e are the mass and radius of the earth, respectively) (A) e e GM g R ? (B) 2 e e GM g R ? Q.21 (C) e e GR g M ? (D) 2 e e GR g M ? The metamorphic facies diagnostic of subduction zone is Q.22 (A) hornblende hornfels (B) pyroxene hornfels (C) blueschist (D) granulite In a formation, if the density increases and elastic constants remain unchanged, then (A) both P and S wave velocities increase (B) P wave velocity increases and S wave velocity decreases (C) both P and S wave velocities decrease Q.23 (D) P wave velocity decreases and S wave velocity increases The Poisson ratio ( ? ) for rocks in terms of Lame’s constants ? and ? is Q.24 (A) 1 ? ? ? ? ? (B) ? ? ? ? ? ? (C) 1 2( ) ? ? ? ? ? (D) 2( ) ? ? ? ? ? ? In seismic exploration, ‘ground roll’ represents Q.25 (A) direct wave (B) surface wave (C) Stonely wave (D) shear wave GG 2011 GEOLOGY & GEOPHYSICS – GG PART B (SECTION 1): FOR GEOLOGY CANDIDATES ONLY Q. 26 to Q. 55 carry two marks each. Choose the correct set of crystal faces for which ‘c’ crystallographic axis is the zone axis. (A) (100), (001), ( 100 ) (B) (010), (001), (010 ) Q.26 (C) (010), ( 110 ), ( 100 ) (D) (110), (001), (110 ) The twin plane in the Manebach law is Q.27 (A) (010) (B) (001) (C) (100) (D) (021) The figure below shows the pattern of increase ( i ) and decrease ( d ) in the interference colors of a mineral after insertion of mica plate. The optic sign of the mineral is (A) uniaxial positive (B) uniaxial negative Q.28 (C) biaxial positive (D) biaxial negative The igneous rock falling in the shaded field of the figure below is Q.29 (A) granite (B) syenite (C) tonalite (D) monzonite The figure below is the photomicrograph of a chloritoid mica schist in which chloritoid forms porphyroblasts. The formation of porphyroblasts in the crenulated matrix is (A) pre-tectonic (B) early syn-tectonic Q.30 (C) late syn-tectonic (D) post-tectonic GGRead More
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