Heating of sun-rays to earth is reduced by:
- (A) Oxygen
- (B) Nitrogen
- (C) Ozone
- (D) Carbon dioxide
- (C) Ozone
Artesian wells are found in _______ rocks.
- (A) Igneous
- (B) Coral
- (C) Metamorphic
- (D) Sedimentary
- (D) Sedimentary
Which of the following is a warm ocean current?
- (A) Labrador
- (B) Peruvian
- (C) Mantle
- (D) Kuroshio
- (D) Kuroshio
The ozone layer in the upper part of the atmosphere protects us from:
- (A) Cosmic rays
- (B) Infra-red rays
- (C) Visible radiations
- (D) Ultra-violet radiations
- (D) Ultra-violet radiations
Which of the following is an argillaceous rock?
- (A) Shale
- (B) Slate
- (C) Sandstone
- (D) Limestone
- (A) Shale
Which of the following is a conventional source of energy?
- (A) Wind
- (B) Solar
- (C) Hydropower
- (D) Geothermal
- (C) Hydropower
Which of the following is a non-conventional source of energy?
- (A) Coal
- (B) Algae
- (C) Biogas
- (D) Hydropower
- (C) Biogas
Dolerite is an example of:
- (A) Dyke
- (B) Batholith
- (C) Laccolith
- (D) Lopolith
- (A) Dyke
Which layer of earth is believed to have the heaviest mineral material of highest density?
- (A) Crust
- (B) Mantle
- (C) Lithosphere
- (D) Central core
- (D) Central core
Which of the following is metamorphic rock?
- (A) Peat
- (B) Slate
- (C) Shale
- (D) Sandstone
- (B) Slate