The document provides a marking scheme for a quiz competition. It outlines that marks will increase by 1 for consecutive correct answers, but decrease by 5 for an incorrect answer. The marking then restarts from 1. It then provides 11 multiple choice questions related to geology, with topics like surface uplift processes, chemical weathering, sedimentary rock properties, mineral and lava compositions, and identifying sedimentary structures from images.

1. QUIZARD
ROUND 2

2. Marking Scheme
• For consecutive correct answers marks will increase by +1 and for the
wrong answer -5 will be allotted and marking will start from +1 again.
• Example if your first 3 answers are correct then 1 incorrect and then 2
correct then the markings will be
Que1  +1
Que 2  +2
Que 3  +3
Que 4  -5
Que 5  +1
Que 6 +2

3. 1. Choose the correct expression from the following that explains the changing
vertical position of a point on the land surface at any time
(Surface Uplift—SU, Bedrock Uplift—BU, Deposition—D, Compaction—C,
Erosion—E)
a.) SU=BU-D-C-E
b.) SU=BU-D+C-E
c.) SU=BU+D-C+E
d.) SU=BU+D-C-E

4. 2. i.)The single most effective agent of chemical weathering of earth’s surface is
a.) carbonic acid
b.) water
c.) carbon dioxide
d.) hydrochloric acid
ii.) The most common end product of the chemical weathering of feldspar is
a.) clay minerals
b.) pyroxene
c.) amphibole
d.) calcite
iii.) The most common end product of the chemical weathering of quartz is
a.) clay minerals
b.) amphibole
c.) calcite
d.) quartz doesn’t usually weather chemically

5. 3. The void raito (in %) of a certain rock is 25. It’s porosity in % is x.
(a)What is X?
(b) Particles of sediments x/30 mm in diameter are of what size?

6. 4. Which lava is pre-dominant in mid oceanic ridges
and state it’s composition
a)Felsic ; Feldspar, Quartz
b)Mafic ; Ferrous, Manganese
c)Felsic ; Aluminium, Feldspar
d)Mafic ; Ferric, Magnesium
e)Felsic ; Quartz, Silica
f) Mafic ; Manganese, Ferrite

7. 5. i.) The chemical element found in dolomite not found in limestone is
a.) Ca
b.) Mg
c.) Al
ii.) The most abundant mineral in the earth’s crust is
a.) Quartz
b.) Potassium Feldspar
c.) Biotite
d.) Garnet
iii.) Which mineral is widely used in drilling mud having Mohr's hardness 3-3.5
specific gravity 4.5

8. 6.
1
2
3
4
5
Structures Name of Structure Formula

9. 7. All forms of crude possess the property of rotating the ppl. which is possessed
by cholesterol (C26H45O4 ). Cholesterol is an essential component of both plant
and animals. Hence supporting the evidence for organic origin of petroleum.
Only inorganic substances which possess the property of rotating the ppl are
_______________ and _______________ . Thus contradicts inorganic origin of
petroleum.

10. 8. Name the given structure

11. 9. i.) Clues of the nature of the source area of sediments can be found in
a.) The composition of the sediments
b.) Sedimentary structures
c.) Rounding of sediments
d.) All of the above
ii.) Which is not a chemical or organic sedimentary rock
a.) Rock salt
b.) Sandstone
c.) Limestone
d.) Gypsum
iii.) A sedimentary rock made of fragments of pre-existing rock is
a.) Organic
b.) Chemical
c.) Detrital

12. 10. What is the major mineral content of oldest dated rock on earth?

13. 11. Name the type of structure shown in figure(cline and form).
Hadean
Pliocene
Silurial
Ordovician