31
Spire is present in the class of
1
Lamellibranchia
2
Brachiopoda
3
Cephalopoda
4
Gastropoda
32
______________________has the features of both plants and animals.
1
Alveolina
2
Coral
3
Euglena
4
Foraminifera
33
Gymnosperm is a plant which
1
exhibits no extinct varieties
2
bears flowers
3
does not produce seeds in cones
4
produces seeds in cones
Answer: produces seeds in cones
34
The age of Baculites is
1
Cretaceous
2
Tertiary
3
Devonian
4
Silurian
35
Cranidium of trilobites is a combination of
1
glabella + free cheeks
2
glabella + fixed cheeks
3
glabella + genal angle
4
fixed cheeks + free cheeks
Answer: glabella + fixed cheeks
36
The normal class of monoclinic system is of
1
galena type
2
gypsum type
3
zircon type
4
beryl type
View Answer
37
In hexagonal system, the twins are formed according to
1
Dauphine law
2
Carlsbad law
3
Pericline law
4
Manebach law
View Answer
38
Which one of the following is not galena type of a mineral?
1
Garnet
2
Spinel
3
Fluorspar
4
Rutile
View Answer
39
A crystal is a periodic arrangement of
1
atoms
2
molecules
3
ions
4
both atoms and molecules
View Answer
Answer: both atoms and molecules
40
The phenomenon of piezoelectricity is exhibited by those crystals that lacks a
1
symmetry axis
2
plane of symmetry
3
centre of symmetry
4
pseudosymmetry
View Answer
Answer: centre of symmetry
41
The Miller's symbol for parameters 1/2a:1/2b : c will be
1
2 0 1
2
1 1 2
3
0 1 2
4
2 2 1
View Answer
42
________________helps in determination of order of interference colour.
1
Gypsum plate
2
Quartz wedge
3
Mica plate
4
Sensitive tint
View Answer
43
Dichroism is restricted to the crystal system(s) of
1
isometric
2
triclinic and monoclinic
3
tetragonal and hexagonal
4
orthorhombic
View Answer
Answer: tetragonal and hexagonal
44
Find the odd one out of the following :
1
Flint
2
Chalcedony
3
Anorthite
4
Opal
View Answer
45
Find the odd one out of the following :
1
Grossular
2
Spessartite
3
Almandine
4
Lepidolite
View Answer
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