Major portion of the earth’s crust is mainly constituted by (1) Oxygen and Iron (2) Oxygen and Silicon (3) Silicon and Iron (4) Silicon and Aluminium

Major portion of the earth’s crust is mainly constituted by (1) Oxygen and Iron (2) Oxygen and Silicon (3) Silicon and Iron (4) Silicon and Aluminium
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Oxygen and Silicon
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Major portion of the earth's crust is mainly constituted by – (1) Oxygen and Iron (2) Oxygen and Silicon (3) Silicon and Iron (4) Silicon and Aluminium

Description : Major portion of the earth's crust is mainly constituted by – (1) Oxygen and Iron (2) Oxygen and Silicon (3) Silicon and Iron (4) Silicon and Aluminium

Last Answer : (2) Oxygen and Silicon Explanation: Oxygen is the most abundant element in the earth's crust, comprising 46.6% or the crust by weight. Silicon 28%, aluminum 8.2%, iron 5.6%, calcium 4.2% ... Given the abundance of oxygen and silicon, the silicates are the most abundant minerals in the earth's crust.

Major portion of the earth’s crust is mainly constituted by - (1) Oxygen and Iron (2) Oxygen and Silicon (3) Silicon and Iron (4) Silicon and Aluminium

Description : Major portion of the earth’s crust is mainly constituted by - (1) Oxygen and Iron (2) Oxygen and Silicon (3) Silicon and Iron (4) Silicon and Aluminium

Last Answer : (2) Oxygen and Silicon Explanation: Oxygen is the most abundant element in the earth’s crust, comprising 46.6% or the crust by weight. Silicon 28%, aluminum 8.2%, iron 5.6%, calcium 4.2%, sodium 2.5%, magnesium 2.4%, potassium, 2.0%, and titanium 0.61% also comprise the crust.

The most abundant element in Earth’s crust is _____? A. Silicon B. Iron C. Aluminum D. Oxygen

Description : The most abundant element in Earth’s crust is _____? A. Silicon B. Iron C. Aluminum D. Oxygen

Last Answer : ANSWER: D

Which of the following is the most abundant metal on Earth's crust? (1) Magnesium (2) Iron (3) Copper (4) Aluminium

Description : Which of the following is the most abundant metal on Earth's crust? (1) Magnesium (2) Iron (3) Copper (4) Aluminium

Last Answer : (4) Aluminium Explanation: Aluminum is the most abundant metal in the Earth's crust, and the third most abundant element therein, after oxygen and silicon. It makes up about 8% by weight of the Earth's solid ... of Earth's volume Oxygen is 46.6%, Silicon 27.77%, Aluminum is 8.09% and iron is 5%.

The most abundant metal in the Earth’s crust is - (1) zinc (2) copper (3) aluminium (4) iron

Description : The most abundant metal in the Earth’s crust is - (1) zinc (2) copper (3) aluminium (4) iron

Last Answer : (3) aluminium Explanation: The most abundant metal on Earth is aluminum. Aluminum is the third most abundant element in the Earth's crust, and makes up 8 percent of it by parts per million. The most abundant element in the Earth's crust is Oxygen followed by Silicon. Both of these are nonmetals.

The most abundant metal in the Earth’s crust is (1) zinc (2) copper (3) aluminium (4) iron

Description : The most abundant metal in the Earth’s crust is (1) zinc (2) copper (3) aluminium (4) iron

Last Answer : aluminium

Which is the second most abundant element of the earth crust? a Oxygen b Nitrogen c Aluminium d Silicon e Calcium

Description : Which is the second most abundant element of the earth crust? a Oxygen b Nitrogen c Aluminium d Silicon e Calcium

Last Answer : c Aluminium

The second most abundant metal found in the earth’s crust is-------? A. Iron (Answer) B. Aluminium C. Calcium D. Sodium

Description : The second most abundant metal found in the earth’s crust is-------? A. Iron (Answer) B. Aluminium C. Calcium D. Sodium

Last Answer : A. Iron (Answer)

The most abundant metal present in the earth's crust is; (A) Iron (B) Copper (C) Titanium (D) Aluminium

Description : The most abundant metal present in the earth's crust is; (A) Iron (B) Copper (C) Titanium (D) Aluminium

Last Answer : (D) Aluminium

Which of the following elements is not present abundantly in earth’s crust ? A. Silicon B. Radium (Answer) C. Aluminum D. Carbon

Description : Which of the following elements is not present abundantly in earth’s crust ? A. Silicon B. Radium (Answer) C. Aluminum D. Carbon

Last Answer : B. Radium (Answer)

Which of the following elements is found in the earth's crust as both a native element and as a compound? w) argon x) copper y) chlorine z) silicon

Description : Which of the following elements is found in the earth's crust as both a native element and as a compound? w) argon x) copper y) chlorine z) silicon

Last Answer : ANSWER: X -- COPPER

A rift valley is formed mainly due to: [NDA 2003] (a) forces of tension in the earth's crust (b) the subsidence of the floor of a river valley (c) the valley formed after the formation of fold mountains (d) the deepening of a valley by ice action

Description : A rift valley is formed mainly due to: [NDA 2003] (a) forces of tension in the earth's crust (b) the subsidence of the floor of a river valley (c) the valley formed after the formation of fold mountains (d) the deepening of a valley by ice action

Last Answer : Ans: (b)

What is the percentage of iron in the weight of the earth's crust ?

Description : What is the percentage of iron in the weight of the earth's crust ?

Last Answer : Iron weighs 4.15 % of the earth's crust .

Nature The second most abundant metal found in the earth’s crust is _____. A. Iron B. Calcium C. Sodium D. Aluminum

Description : Nature The second most abundant metal found in the earth’s crust is _____. A. Iron B. Calcium C. Sodium D. Aluminum

Last Answer : ANSWER: A

The second most abundant metal found in the earth’s crust is _____. A. Iron B. Calcium C. Sodium D. Aluminum

Description : The second most abundant metal found in the earth’s crust is _____. A. Iron B. Calcium C. Sodium D. Aluminum

Last Answer : ANSWER: A

The second most abundant metal found in the earth’s crust is _____. A. Iron B. Calcium C. Sodium D. Aluminum

Description : The second most abundant metal found in the earth’s crust is _____. A. Iron B. Calcium C. Sodium D. Aluminum

Last Answer : ANSWER: A

The second most abundant metal found in the earth’s crust is _____. A. Iron B. Calcium C. Sodium D. Aluminum

Description : The second most abundant metal found in the earth’s crust is _____. A. Iron B. Calcium C. Sodium D. Aluminum

Last Answer : ANSWER: A

Which of the following materials may prove unsuitable for handling acetic acid (glacial & anhydrous) at 40°C? (A) Silicone rubber, teflon, porcelain and wood (B) Nickel, monel, stainless steel and graphite (C) Aluminium, copper, high silicon iron (D) Brass, cast iron, mild steel and tin

Description : Which of the following materials may prove unsuitable for handling acetic acid (glacial & anhydrous) at 40°C? (A) Silicone rubber, teflon, porcelain and wood (B) Nickel, monel, stainless steel and graphite (C) Aluminium, copper, high silicon iron (D) Brass, cast iron, mild steel and tin

Last Answer : (D) Brass, cast iron, mild steel and tin

Concentrated HCl at 30°C can be stored in a vessel made of (A) PTFE and porcelain (B) Cast iron and aluminium (C) Stainless steel and high silicon cast iron (D) None of these

Description : Concentrated HCl at 30°C can be stored in a vessel made of (A) PTFE and porcelain (B) Cast iron and aluminium (C) Stainless steel and high silicon cast iron (D) None of these

Last Answer : (A) PTFE and porcelain

H2SO4 (< 50% concentration) is corrosive to (A) Aluminium, mild steel, stainless steel, concrete & tin (B) Copper, cast iron & high silicon iron (14% Si) (C) Rubber (butyl and hard), silicone rubber & Teflon (D) Glass, graphite, porcelain & stoneware

Description : H2SO4 (< 50% concentration) is corrosive to (A) Aluminium, mild steel, stainless steel, concrete & tin (B) Copper, cast iron & high silicon iron (14% Si) (C) Rubber (butyl and hard), silicone rubber & Teflon (D) Glass, graphite, porcelain & stoneware

Last Answer : (A) Aluminium, mild steel, stainless steel, concrete & tin

100% H2SO4 at 30°C can't be stored in a vessel made/lined with (A) Cast iron and high silicon iron (B) Mild steel and stainless steel (C) Aluminium, tin and rubber (D) Teflon, glass and porcelain

Description : 100% H2SO4 at 30°C can't be stored in a vessel made/lined with (A) Cast iron and high silicon iron (B) Mild steel and stainless steel (C) Aluminium, tin and rubber (D) Teflon, glass and porcelain

Last Answer : (C) Aluminium, tin and rubber

Light weight metallic alloy used in aircraft industry is (A) Aluminium (B) High silicon (14%) iron (C) Duralumin

Description : Light weight metallic alloy used in aircraft industry is (A) Aluminium (B) High silicon (14%) iron (C) Duralumin

Last Answer : (C) Duralumin

Neutraliser tank used for reacting nitric acid with ammonia for the production of ammonium nitrate is made of (A) Aluminium (B) Stainless steel (C) High silicon (14%) iron (D) Copper

Description : Neutraliser tank used for reacting nitric acid with ammonia for the production of ammonium nitrate is made of (A) Aluminium (B) Stainless steel (C) High silicon (14%) iron (D) Copper

Last Answer : (B) Stainless steel

Polymerisation reactor used in the production of styrene butadiene rubber (SBR) is made of (A) Stainless steel or glass lined steel (B) Nickel clad steel (C) High silicon cast iron (D) Aluminium

Description : Polymerisation reactor used in the production of styrene butadiene rubber (SBR) is made of (A) Stainless steel or glass lined steel (B) Nickel clad steel (C) High silicon cast iron (D) Aluminium

Last Answer : (A) Stainless steel or glass lined steel

Which of the following material of construction may be recommended by a chemical engineer for handling a gaseous chlorine (dry or wet) stream in a fluid flow system? (A) High silicon iron, silicon rubber, Kel-F and Teflon (B) Mild steel and stainless steel (C) Cast iron, tin and aluminium (D) Copper, nickel and Monel

Description : Which of the following material of construction may be recommended by a chemical engineer for handling a gaseous chlorine (dry or wet) stream in a fluid flow system? (A) High silicon iron, silicon rubber ... Mild steel and stainless steel (C) Cast iron, tin and aluminium (D) Copper, nickel and Monel

Last Answer : (A) High silicon iron, silicon rubber, Kel-F and Teflon

Station located on an object which is beyond and is intended to go beyond the major portion of the earth’s atmosphere. A. Terrestrial station B. Space station C. Satellite station D. Mobile satellite station

Description : Station located on an object which is beyond and is intended to go beyond the major portion of the earth’s atmosphere. A. Terrestrial station B. Space station C. Satellite station D. Mobile satellite station

Last Answer : B. Space station

What is the element that is in the highest percentage in the composition of the earth? (1) Silicon (2) Oxygen (3) Magnesium (4) Iron

Description : What is the element that is in the highest percentage in the composition of the earth? (1) Silicon (2) Oxygen (3) Magnesium (4) Iron

Last Answer : (2) Oxygen Explanation: Earth, our home, is the third planet from the sun. It is the only planet known to have an atmosphere containing free oxygen, oceans of liquid water on its surface, and, of ... of it in the oceans. About a fifth of its atmosphere is made up of oxygen, produced by plants.

What is the element that is in the highest percentage in the composition of the earth ? (1) Silicon (2) Oxygen (3) Magnesium (4) Iron

Description : What is the element that is in the highest percentage in the composition of the earth ? (1) Silicon (2) Oxygen (3) Magnesium (4) Iron

Last Answer : Oxygen

Pearl is mainly constituted of:

Description : Pearl is mainly constituted of:

Last Answer : Calcium carbonate

Which of the following constituents of cast iron is mainly responsible for imparting it an anti-corrosive property? (A) Silicon (B) Phosphorus (C) Sulphur (D) None of these

Description : Which of the following constituents of cast iron is mainly responsible for imparting it an anti-corrosive property? (A) Silicon (B) Phosphorus (C) Sulphur (D) None of these

Last Answer : (A) Silicon

Which of the following is the element which makes up about 8 percent of the earth's crust and occurs in all rocks except limestone and sandstone? w) sulfur x) aluminum y) sodium z) magnesium

Description : Which of the following is the element which makes up about 8 percent of the earth's crust and occurs in all rocks except limestone and sandstone? w) sulfur x) aluminum y) sodium z) magnesium

Last Answer : ANSWER: X -- ALUMINUM

The chemical element present in greatest abundance in the earth's crust is:

Description : The chemical element present in greatest abundance in the earth's crust is:

Last Answer : ANSWER: OXYGEN

I will be describing a chemical element. Try to identify it with the fewest number of clues. This chemical element is a silver-white metal, with bluish tinge, capable of taking a high polish. T element occurs abundantly in all ordinary rocks, except limestone and sandstone; is third in abundance of the elements in the earth's crust and used to make drink cans. The atomic number of this element is 13. Name t element.

Description : I will be describing a chemical element. Try to identify it with the fewest number of clues. This chemical element is a silver-white metal, with bluish tinge, capable of taking a high polish. T element ... crust and used to make drink cans. The atomic number of this element is 13. Name t element.

Last Answer : ANSWER: ALUMINUM

What is mainly obtained from bauxite? (a) Copper (b) Aluminium (c) Iron (d) Gold

Description : What is mainly obtained from bauxite? (a) Copper (b) Aluminium (c) Iron (d) Gold

Last Answer : Ans:(b)

Babbitt metal (used for making bearings) comprises of (A) Mainly tin (85%) and lead (B) Saw dust and iron dust mixture (C) Zinc and aluminium (D) Copper and aluminium

Description : Babbitt metal (used for making bearings) comprises of (A) Mainly tin (85%) and lead (B) Saw dust and iron dust mixture (C) Zinc and aluminium (D) Copper and aluminium

Last Answer : (A) Mainly tin (85%) and lead

Hydrofluoric acid is not kept in glass bottles because it reacts with - (1) visible light (2) silicon dioxide of glass (3) aluminium oxide of glass (4) sodium oxide of glass

Description : Hydrofluoric acid is not kept in glass bottles because it reacts with - (1) visible light (2) silicon dioxide of glass (3) aluminium oxide of glass (4) sodium oxide of glass

Last Answer : (2) silicon dioxide of glass

The element present in the largest amount in rocks and minerals is - (1) carbon (2) silicon (3) hydrogen (4) aluminium

Description : The element present in the largest amount in rocks and minerals is - (1) carbon (2) silicon (3) hydrogen (4) aluminium

Last Answer : (2) silicon Explanation: Silicon is the eighth most common element in the universe by mass, but very rarely occurs as the pure free element in nature. It is most widely distributed in dusts, sands, planetoids, and planets as various forms of silicon dioxide (silica) or silicates.

Which of the following elements has the atomic number greater than that of Phosphorus? (1) Aluminium (2) Silicon (3) Chlorine (4) Magnesium

Description : Which of the following elements has the atomic number greater than that of Phosphorus? (1) Aluminium (2) Silicon (3) Chlorine (4) Magnesium

Last Answer : (3) Chlorine Explanation: Chlorine is a chemical element with symbol Cl and atomic number 17. Phosphorus is a chemical element with symbol P and atomic number 15.

The elements known as primary nutrients for plants (1) Nitrogen, Phosphorus and Potassium (2) Nitrogen, Oxygen and Silicon (3) Potassium, Boron and Nitrogen (4) Nitrogen, Phosphorus and Iron

Description : The elements known as primary nutrients for plants (1) Nitrogen, Phosphorus and Potassium (2) Nitrogen, Oxygen and Silicon (3) Potassium, Boron and Nitrogen (4) Nitrogen, Phosphorus and Iron

Last Answer : (1) Nitrogen, Phosphorus and Potassium Explanation: Nitrogen (N), Phosphorus (P) and Potassium (K) are considered as the three essential or primary nutrients for plants. Together they make up ... need small quantities of iron, manganese, zinc, copper, boron and molybdenum, known as trace elements

The elements known as primary nutrients for plants (1) Nitrogen, Phosphorus and Potassium (2) Nitrogen, Oxygen and Silicon (3) Potassium, Boron and Nitrogen (4) Nitrogen, Phosphorus and Iron

Description : The elements known as primary nutrients for plants (1) Nitrogen, Phosphorus and Potassium (2) Nitrogen, Oxygen and Silicon (3) Potassium, Boron and Nitrogen (4) Nitrogen, Phosphorus and Iron

Last Answer : Nitrogen, Phosphorus and Potassium

Describe the nature and mode of origin of the chief types of rock at the earth’s crust. How will you distinguish them?\ -Geography

Description : Describe the nature and mode of origin of the chief types of rock at the earth’s crust. How will you distinguish them?\ -Geography

Last Answer : The earth's crust is composed of rocks. A rock is made up by aggregate of one or more minerals. Rock may be hard or soft and in varied colours. For example, granite is hard, ... contact with the crustal rocks or the underlying rocks are subjected to great amounts of pressure by overlying rocks.

What is the earth’s crust made of? [V.Imp.] -Geography

Description : What is the earth’s crust made of? [V.Imp.] -Geography

Last Answer : It is made up of different types of rocks.

Which is the second most abundant metal in the earth’s crust? -General Knowledge

Description : Which is the second most abundant metal in the earth’s crust? -General Knowledge

Last Answer : The answer is 'Iron'

Which is present in the largest amount in terms of percent by mass in the earth’s crust? -General Knowledge

Description : Which is present in the largest amount in terms of percent by mass in the earth’s crust? -General Knowledge

Last Answer : The answer is 'Oxygen'

What is the most abundant metal in the earth’s crust? -Do You Know?

Description : What is the most abundant metal in the earth’s crust? -Do You Know?

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What is the most abundant element on the earth’s crust by weight? -Do You Know?

Description : What is the most abundant element on the earth’s crust by weight? -Do You Know?

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Which elements is most abundant in the earth’s crust? -Do You Know?

Description : Which elements is most abundant in the earth’s crust? -Do You Know?

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Which is the second most abundant metal in the earth’s crust? -Do You Know?

Description : Which is the second most abundant metal in the earth’s crust? -Do You Know?

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Which minerals occurs abundantly in the Earth’s crust? -Do You Know?

Description : Which minerals occurs abundantly in the Earth’s crust? -Do You Know?

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What is the second most abundant element in the earth’s crust? -Do You Know?

Description : What is the second most abundant element in the earth’s crust? -Do You Know?

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