A. Oxygen
B. Cabon Dioxide
C. Silicon
D. Clay
Related Mcqs:
- The most abundant element in the Earth’s crust is __________?
A. Oxygen
B. Hydrogen
C. Carbon Dioxide
D. Silicon - Which of the following elements is not present abundantly in earth’s crust ?
A. Silicon
B. Radium
C. Aluminum
D. Carbon - The second most abundant metal found in the earth’s crust is_____________?
A. Silicon
B. Aluminium
C. Calcium
D. SodiumSubmitted by: Ashfaque Ali Khoso
- The earth surface & crust constantly evolving due to ?
A. Rotary cycle
B. Normal cycle
C. Rock cycle
D. Change cycleSubmitted by: Mansoor Ahmed Suhag
- The lowest region of the earth’s atmosphere comes between the earth and stratosphere. what is this region’s name?
A. Ionosphere
B. Troposphere
C. Stratosphere
D. MesosphereSubmitted by: Ashfaque Ali Khoso
- Border line which separates outer space from Earth’s atmosphere is known as___________?
A. Durand line
B. Space line
C. Venus line
D. Karman lineSubmitted by: Rehana
- Second layer of Earth’s atmosphere is__________?
A. Stratosphere
B. Mesosphere
C. Troposphere
D. ThermosphereSubmitted by: Rehana Mallah
- The atmosphere near the earth’s surface is “heated from below.” Which of the following does not significantly contribute to this heating _____________________?
A. Conduction of heat upward from a hot surface
B. Convection from a hot surface
C. Absorption of infrared energy that has been radiated from the surface
D. Heat energy from the earth’s interiorSubmitted by: Mansoor Ul Haque
- The earth’s atmosphere is divided into layers based on the vertical profile of __________?
A. Air pressure
B. Air temperature
C. Air density
D. Wind speedSubmitted by: Mansoor Ul Haque
- Which layer of the atmosphere lies close to the earth?
A. Stratosphere
B. Mesosphere
C. Troposphere
D. ThermosphereSubmitted by: Ali Mallah
The correct answer to the question: "About 50% of the Earth’s crust, including the waters on the Earth and atmosphere, is?" is "Oxygen".
