Geology and Geophysics
GATE GG-1 purpose:exam-prep PYQs
Build your understanding with focused practice from past exam papers.
Questions 81–90 of 650. Imported answers require independent review unless marked reviewed.
Question 16
Open questionGGNAT1 markNeeds review
A watershed has an area of 74 km
. The stream network within this watershed consists of three different stream orders. The stream lengths in each order are as follows:I
order streams: 3 km, 2.5 km, 4 km, 3 km, 2 km, 5 kmII
order streams: 10 km, 15 km, 7 kmIII
order streams: 30 kmThe drainage density of the watershed is __________ km/km
(Round off to two decimal places)
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Open questionGGNAT1 markNeeds review
A sample contains 7 wt% CaO and 5 wt% MgO. The molar ratio of CaO to MgO in the sample is __________
(Round off to two decimal places)
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Open questionGGMCQ2 marksNeeds review
Select the option that lists oxide minerals only.
Your answerChoose one option.
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Open questionGGMCQ2 marksNeeds review
Consider two intersecting, north-easterly striking and south-easterly dipping dikes Y1 and Y2, which are exposed on an east-west trending vertical wall of a granite (X) quarry as shown below.
The angle that the dikes make with the horizontal on the quarry wall is
Your answerChoose one option.
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Open questionGGMSQ2 marksNeeds review
The ratio of P-wave to S-wave velocities,
, within the Earth depends onYour answerSelect all correct options. You can choose more than one.
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Open questionGGMSQ2 marksNeeds review
Three pixels P, Q, and R in an image are characterized by the NDVI values of + 0.84, + 0.01, and − 0.89, respectively. Which of the following options is/are correct?
Your answerSelect all correct options. You can choose more than one.
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Open questionGGMSQ2 marksNeeds review
Which of the following can indicate the presence of significant sub-surface iron mineralization?
Your answerSelect all correct options. You can choose more than one.
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Open questionGGMSQ2 marksNeeds review
Which of the following statements is/are correct regarding the magnetic field lines of the Earth, at the magnetic poles and the magnetic equator?
Your answerSelect all correct options. You can choose more than one.
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Open questionGGNAT2 marksNeeds review
If the lowest Digital Number (DN) value in an image of 10-bit radiometric resolution is 0, then the maximum DN value of that image is __________
(Answer in integer)
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Open questionGGNAT2 marksNeeds review
If one liter of water at pH 7 is mixed with one liter of water at pH 6, the resulting pH of the mixture is __________
(Round off to two decimal places)
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