Which of the following are true regarding the crust of the earth? 1. It is the outer thin layer with a total thickness of about 100 km 2. It forms around 0.5 percent of the earth's volume 3. The outer covering of the crust is of sedimentary material 4. The lower layer of the crust consists of basaltic and ultra-basic rocks

Related MCQs

• Consider the following statements: 1. Igneous rocks are classified into Extrusive and Intrusive rocks. 2. Sedimentary rocks are also called as Primary rocks 3. Marble is an example of Metamorphic rocks 4. Coal is a sedimentary rock Which of the above statements is/are correct? [NDA 2002]
• Which of the following are true with respect to sedimentary rocks? 1. The rocks are deposited in layers 2. The particles of rocks are at times wholly of organic nature 3. The rocks are not crystalline 4. Their structure is determined by great pressure or heat
• Consider the following statements: 1. The acid lava usually melts at a relatively higher temperature as compared to basic (basaltic) lava. 2. The acid lava solidifies into glass-like sheets and the basaltic lava solidifies into rough surfaces. Which of the statements given above is/are correct? [IAS 2007]
• Which of the following statements are true regarding distribution of world population? 1. Only 10 percent of the total population lives in the southern hemisphere 2. Nearly two-thirds of the total population live within 500 km of sea 3. Nearly 80 percent of the total population lives within 500 meters altitude above sea level
• Which of the following best explain why the lower course of a river is sometimes choked with sediments? 1. The valley of a river is widest in its lower course. 2. The velocity of a river in its lower course is low. 3. The delta sometimes develops in a river's lower course. 4. Much of the river water is drawn for irrigation in the lower course. Select the correct answer using the code given below: [CDS 2011]
• Why do Fold Mountains have enormous thickness of sedimentary rocks? [CDS 2011]
• Which of the following are true regarding ionosphere? 1. It is the uppermost layer of atmosphere 2. The molecules and atoms of nitrogen and oxygen in this layer absorb a part of solar radiation and become ionized 3. This layer is responsible for reflecting back the radio wave~ transmitted from the earth
• Consider the following statements regarding the atmosphere of the earth: 1. It is enveloping the earth because of gravity. 2. Its density decreases with increasing height from the surface of the earth. 3. Its characteristic composition is same throughout its height. 4. Amount of pressure it exerts on earth's surface at sea level is called one atm sphere. Which of these statements are correct? [CDS 2001]
• Consider the following statements: 1. Earth is the fourth largest planet of the solar system 2. Earth's circumference is about 45000 km 3. Earth's polar diameter is about 43 km shorter than its equatorial diameter 4. Earth has a total surface area of 510 million sq.km Which of these statements are correct? [NDA 2002]
• Of the total volume of the earth, which layer forms the major part ?