Q. The phase difference between the input and output signals for a ‘Compensator device’ used in electromagnetic prospecting to nullify the effect of primary field at the receiver coil is (A) 0°(B) 45°(C) 90°(D) 180°Ans: 180°

Q. Which one of the following statements is INCORRECT with regard to Nuclear Magnetic Resonance (NMR) logging? (ΦNMR - NMR derived total porosity, ΦD - Density porosity) (A)The relaxation time (T2) decreases with decrease in pore size. (B)The ΦNMR is greater than ΦD in a water saturated ...

Q. Which one of the following is CORRECT for the density porosity (fD) and neutron porosity (fN) estimated for a finely interbedded organic-rich, shaly sandstone formation relative to those for a shale-free sandstone formation at shallow depths? (A) ΦN decreases and ΦD increases. (B) ΦN ...

Q. Match the economic deposits in Group I with their occurrence in stratigraphic units in Group II Group IGroup IIP. Phosphate1. Sargur GroupQ. Manganese2. Nallamalai GroupR. Chromite3. Udaipur FormationS. Barite4. Mansar Formation(A) P-1, Q-3, R-4, S-2                                   (B) ...

Q. Which one of the following statements is CORRECT about bivalve habitat? (A) Gryphaea is a burrowing variety. (B) Pholas is a free lying form. (C) Lucina is a boring variety. (D) Mytilus is a bysally attached form. Ans: Mytilus is a bysally attached form.

Q. Which one of the following stratigraphic units represents the CORRECT order of younging? (A) Trichinopally Group - Uttatur Group - Ariyalur Group - Niniyur Group (B) Kopili Formation - Sylhet Formation - Barail Formation - Boka Bil Formation (C) Chinji Formation - Nagri Formation - ...

Q. In metamafites, which one of the following mineral assemblages is stable under green schist facies conditions? (A) Albite + Chlorite + Actinolite + Epidote (B) Andesine + Biotite + Hornblende (C) Oligoclase + Biotite + Hornblende (D) Oligoclase + Epidote + Biotite + Hornblende ...

Q. Which one of the following set of statements regarding the overall nature of marine shelf succession is CORRECT? Statement I: Transgressive systems tract deposit is deepening upward Statement II: Highstand systems tract deposit is deepening upward Statement III: Falling stage systems ...

Q. Which of the following case (s) represent (s) textural inversion in sandstone? Case I: Rounded grains in clayey matrix. Case II: Rounded, but poorly sorted grains. (A) Only case I. (B) Only case II. (C) Both cases I and II. (D) Neither case I nor case II. Ans: Both cases I ...

Q. The value of salinity, in terms of wt.% NaCl equivalent, of an aqueous saline bi-phase liquid-vapour fluid inclusions is determined by measurement of____during microthermometry. (A) last ice-melting temperature (B) dissolution temperature of halite (C) eutectic temperature (D) ...