IIT JAM Answer Keys

Hello, I want to give the paper of the IIT JAM and I want the answer keys of the paper. Please provide me.

[Shaleen]

Hello, here I am providing you the answer key of the IIT JAM exam and also some of the questions for practice as under:

Q. 1 – Q.10 carry one mark each.

Q.1 Which amongst the following planets has the highest number of known satellites?
(A) Mars (B) Uranus (C) Venus (D) Mercury

Q.2 Identify the mineral which has specific gravity >5, hardness <3 and gives grey streak.
(A) Barite (B) Sphalerite (C) Graphite (D) Galena

Q.3 A unit which is semi-permeable and does not yield any significant quantity of groundwater is
called:
(A) Aquiclude (B) Aquifer (C) Aquitard (D) Artesian Aquifer

Q.4 A sandstone with less than 15% matrix content is known as:
(A) Siltstone (B) Mudstone (C) Greywacke (D) Arenite

Q.5 Which of the following mineral deposit is formed exclusively by surface geological processes?
(A) Wollastonite (B) Asbestos (C) Corundum (D) Bauxite

Q.6 Graphic texture is indicative of:
(A) Eutectic crystallization
(B) Crystal settling
(C) Fractional crystallization
(D) Magma mixing

Q.7 Which of the following is NOT a form of the isometric system?
(A) Octahedron (B) Tetrahedron (C) Trapezohedron (D) Rhombohedron

Q.8 Which of the following group of fossils became extinct at the Permo-Triassic boundary?
(A) Graptolite (B) Trilobite (C) Ammonite (D) Ediacaran

Q.9 Arrange the following granitoid bodies in order of their decreasing age.
(P) Erinpura Granite
(Q) Closepet Granite
(R) Singhbhum Granite
(S) Ladakh Granitoids
(A) R-P-Q-S
(B) S-Q-R-P
(C) R-Q-P-S
(D) Q-R-S-P

Q.10 Which of the following Brachiopod genera is considered as “living fossil”?
(A) Lingula (B) Productus (C) Atrypa (D) Spirifer
In an undulated topography, a set of uniformly inclined beds show ‘V’-shaped outcrop pattern with
apex pointing downstream in a valley. This indicates:
(A) The dip of the beds is more than the slope of the valley
(B) The dip of the beds is less than the slope of the valley
(C) The beds are vertical
(D) The beds are horizontal

Silica-rich viscous magmas often produce:
(A) Stratovolcano (B) Shield volcano (C) Dome (D) Fissure eruption

A mine excavation made along the strike of a 2 meter thick tabular ore body dipping 30° is called:
(A) Crosscut (B) Raise (C) Drive (D) Shaft

Q.16 An ore body showing ‘saddle reef’ structure is formed by:
(A) Early magmatic crystallization process
(B) Liquid immiscibility
(C) Hydrothermal process
(D) Metamorphic process

IIT JAM answer key