GATE GG-1 purpose:exam-prep PYQs & Answers — Page 45

Questions 441–450 of 650. Imported answers require independent review unless marked reviewed.

Topic practice 650 questionsPage 45 of 65

Which one of the following assembles of plant fossils is known from the Barakar Formation?

Your answerChoose one option.

Glossopteris, Gangamopteris, Dicroidium

Glossopteris, Gangamopteris, Noeggerathiopsis

Glossopteris, Gangamopteris, Ptilophyllum

Schizoneura, Noeggerathiopsis, Ptilophyllum

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

Match the features (Group I) with the corresponding invertebrate genera (Group II).

Group I: P. Cardinal Formula; Q. Chondrophore; R. Lophophore; S. Glabella

Group II: 1. Calymene; 2. Rhynchonella; 3. Zaphrenis; 4. Mya

Your answerChoose one option.

P-3, Q-4, R-1, S-2

P-3, Q-4, R-2, S-1

P-4, Q-3, R-2, S-1

P-2, Q-1, R-4, S-3

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

If the orthogonal thickness is constant along a folded layer, as per Ramsay’s morphological classification of folds, it is a

Your answerChoose one option.

Class 1A fold

Class 1B fold

Class 2 fold

Class 3 fold

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

If density of quartz is 2650 kg/m³ and that of orthoclase is 2550 kg/m³, the lithostatic pressure due to a granite with 68 modal % quartz and 32 modal % orthoclase at a depth of 10 km will be ________ bar. (Round off to 2 decimal places) (Acceleration due to gravity g = 9.8 m/s².)

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

The unit-cell of an orthorhombic mineral was compressed during deformation from 5 Å to 4.5 Å along the c-axis, with the other two dimensions remaining unaffected. The absolute value of the shift in the position of the (001) peak in its XRD pattern is ________ °2θ. (Round off to 3 decimal places) (Wavelength of X-ray used = 1.5418 Å. For orthorhombic system:

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

The grade of iron in an ore body containing 80 wt. % hematite and 20 wt. % gangue is ________ %. (Round off to 2 decimal places) (Atomic wt. of Fe = 55.85, atomic weight of O = 16)

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

The abundances of the isotopes ³⁵Cl (atomic mass = 34.9685 amu) and ³⁷Cl (atomic mass = 36.9650 amu) are 75.77 % and 24.23 %, respectively. The calculated atomic weight of Cl is ________ amu. (Round off to 3 decimal places)

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

A vertical profile perpendicular to the crest line of an asymmetrical ripple is given in the figure. The calculated Ripple Index is ____________.

Diagram for Geology and Geophysics question 23

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

A source rock undergoes melting. Assuming batch melting, 5% partial melting and bulk distribution coefficient of 0.045, the enrichment factor (Cₗ/C₀) of Rb in the melt will be __________. (Round off to 2 decimal places)

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

If the ΔH of formation of CaSiO₃, SiO₂ and CaO from Ca, Si and O are respectively −1635, −911 and −635 kJ/mol, the enthalpy of formation of CaSiO₃ from CaO and SiO₂ is __________ kJ/mol.

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

GATE GG-1 purpose:exam-prep PYQs

Question 16

Question 17

Question 18

Question 19

Question 20

Question 21

Question 22

Question 23

Question 24

Question 25