Spot the odd item in the following :

(1) Basalt

(2) Ruby

(3) Emerald

(4) Sapphire

Which of the following is an organic rock?

(1) Marble

(2) Coal

(3) Granite

(4) Slate

The mountain formed on the earth crust due to tension is called

(1) Young folded mountain

(2) Old folded mountain

(3) Laccolith mountain

(4) Block mountain

Spot the odd item of the following :

(1) Shale

(2) Marble

(3) Limestone

(4) Sandstone

Solar eclipse occurs when

(1) the Moon does not lie on the line joining the Sun and the Earth

(2) the Moon comes between the Sun and the Earth

(3) the Sun comes between the Moon and the Earth

(4) the Earth comes between the Moon and the Sun

Rift Valley is formed

(1) between two anticlines

(2) between two faults

(3) erosion of synclinal basin

(4) due to a volcanic eruption

Widening of a river valley takes place due to

(1) Corrosion

(2) Lateral erosion

(3) Corrasion

(4) Hydraulic action

Which type of lake is formed by volcanic activities?

(1) Lagoon

(2) Fresh water lake

(3) Cladera lake

(4) Karst lake

Nappe is a kind of

(1) fluvial feature

(2) folded structure

(3) erosional plain

(4) delta region

The area which is resistant to any massive structural transformation is called

(1) rigid mass

(2) ancient landmass

(3) tectonic plate

(4) shield

The area marked by internal drainage

(1) Plateau

(2) Plains

(3) Deserts

(4) Mountains