The most abundant element is - (1) Calcium (2) Silicon (3) Oxygen (4) Nitrogen

The most abundant element is - (1) Calcium (2) Silicon (3) Oxygen (4) Nitrogen
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(3) Oxygen Explanation: On earth, oxygen is the most common element, making up about 47% of the earth's mass. Silicon is second, making up 28%, followed by aluminum (8%), iron (5%), magnesium (2%), calcium (4%), sodium (3%), and potassium (3%). All of the remaining elements together make up less than 1% of the earth's mass.
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The most abundant element is (1) Calcium (2) Silicon (3) Oxygen (4) Nitrogen

Description : The most abundant element is (1) Calcium (2) Silicon (3) Oxygen (4) Nitrogen

Last Answer : Oxygen

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 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

The most abundant element in the earth's atmosphere is – (1) Argon (2) Nitrogen (3) Oxygen (4) Krypton

Description : The most abundant element in the earth's atmosphere is – (1) Argon (2) Nitrogen (3) Oxygen (4) Krypton

Last Answer : (2) Nitrogen Explanation: The most abundant gas in the Earth's atmosphere is nitrogen. Nitrogen makes up 78 percent of the Earth's atmosphere, and it is a permanent gas, which means that its percentage ... atmosphere is made up of 21 percent oxygen, 0.9 percent argon and 0.1 percent trace gases.

The most abundant element by number in the living system is : (1) Nitrogen (2) Hydrogen (3) Oxygen (4) Carbon

Description : The most abundant element by number in the living system is : (1) Nitrogen (2) Hydrogen (3) Oxygen (4) Carbon

Last Answer : (2) Hydrogen Explanation: In sequential order, Hydrogen. Oxygen, Carbon and Nitrogen are the most abundant elements by number in the living system. Hydrogen constitutes 49.8% of living systems, while Oxygen ... . It is not surprising, therefore, that the living cell is between 60% and 90% water.

The most abundant element in the universe is thoug to be: w) carbon x) oxygen y) hydrogen z) nitrogen

Description : The most abundant element in the universe is thoug to be: w) carbon x) oxygen y) hydrogen z) nitrogen

Last Answer : ANSWER: Y -- HYDROGEN

The most abundant element in the earth’s atmosphere is (1) Argon (2) Nitrogen (3) Oxygen (4) Krypton

Description : The most abundant element in the earth’s atmosphere is (1) Argon (2) Nitrogen (3) Oxygen (4) Krypton

Last Answer : Nitrogen

The most abundant element by number in the living system is : (1) Nitrogen (2) Hydrogen (3) Oxygen (4) Carbon

Description : The most abundant element by number in the living system is : (1) Nitrogen (2) Hydrogen (3) Oxygen (4) Carbon

Last Answer : Hydrogen

The most abundant element in the human body is (1) carbon (2) iron (3) nitrogen (4) oxygen

Description : The most abundant element in the human body is (1) carbon (2) iron (3) nitrogen (4) oxygen

Last Answer : oxygen

The element least likely to be found in an organic compound is (a) oxygen (b) sulfur (c) nitrogen (d) silicon

Description : The element least likely to be found in an organic compound is (a) oxygen (b) sulfur (c) nitrogen (d) silicon

Last Answer : silicon

The element which is the most abundant in the human body is : (1) Oxygen (2) Carbon (3) Iron (4) Nitrogen

Description : The element which is the most abundant in the human body is : (1) Oxygen (2) Carbon (3) Iron (4) Nitrogen

Last Answer : (1) Oxygen Explanation: The generation and maintenance of all our life processes are supported by four basic components: carbohydrates, water, proteins and energy. Most scientists agree that oxygen is ... is largely composed of oxygen. All metabolic processes in the body are regulated by oxygen.

The element which is the most abundant in the human body is: (1) Oxygen (2) Carbon (3) Iron (4) Nitrogen

Description : The element which is the most abundant in the human body is: (1) Oxygen (2) Carbon (3) Iron (4) Nitrogen 

Last Answer : Oxygen

The most abundant constituent of atmospheric air is – (1) carbon (2) hydrogen (3) oxygen (4) nitrogen

Description : The most abundant constituent of atmospheric air is – (1) carbon (2) hydrogen (3) oxygen (4) nitrogen

Last Answer : (4) nitrogen Explanation: Air is the name given to the atmosphere used in breathing and photosynthesis. Dry air contains roughly (by volume) 78.09% nitrogen, 20.95% oxygen, 0.93% argon, 0.039% carbon dioxide, and small amounts of other gases.

The most abundant constituent of atmospheric air is : (1) carbon (2) hydrogen (3) oxygen (4) nitrogen

Description : The most abundant constituent of atmospheric air is : (1) carbon (2) hydrogen (3) oxygen (4) nitrogen

Last Answer : nitrogen

The element used for making solar cells is - (1) Magnesium (2) Sodium (3) Calcium (4) Silicon

Description : The element used for making solar cells is - (1) Magnesium (2) Sodium (3) Calcium (4) Silicon

Last Answer : (4) Silicon Explanation: Materials presently used for photovoltaic solar cells include mono-crystalline silicon, polycrystaijhne silicon, amorphous silicon, cadmium telluride, and copper indium selenideisulfide.

The element used for making solar cells is (1) Magnesium (2) Sodium (3) Calcium (4) Silicon

Description : The element used for making solar cells is (1) Magnesium (2) Sodium (3) Calcium (4) Silicon

Last Answer : Silicon

What of the element out of calcium argon sodium nitrogen oxygen and chlorine can become stable by losing 1 electron?

Description : What of the element out of calcium argon sodium nitrogen oxygen and chlorine can become stable by losing 1 electron?

Last Answer : Sodium. A sodium atom has one valence electron in its 3rd energy level. This is very unstable, so a sodium atom will lose that single valence electron to another atom (nonmetal), and the 2nd energy ... sodium ion, Na+, will bond with a negatively charged ion; either a nonmetal or a polyatomic ion.

Organic chemistry involves molecules that contain which element? a. carbon c. oxygen b. nitrogen d. calcium

Description : Organic chemistry involves molecules that contain which element? a. carbon c. oxygen b. nitrogen d. calcium

Last Answer : a. carbon

In addition to hydrogen, the other abundant element present on Sun’s surface is - (1) Helium (2) Neon (3) Argon (4) Oxygen

Description : In addition to hydrogen, the other abundant element present on Sun’s surface is - (1) Helium (2) Neon (3) Argon (4) Oxygen

Last Answer : (1) Helium Explanation: The Sun is composed primarily of the chemical elements hydrogen and helium; they account for 74.9% and 23.8% of the mass of the Sun in the photosphere, respectively. All ... out of which it formed: the hydrogen and helium in the Sun were produced by Big Bang nucleosynthesis.

After carbon, hydrogen, and oxygen, the next most abundant element in proteins is:

Description : After carbon, hydrogen, and oxygen, the next most abundant element in proteins is:

Last Answer : ANSWER: NITROGEN

In addition to hydrogen, the other abundant element present on Sun’s surface is (1) Helium (2) Neon (3) Argon (4) Oxygen

Description : In addition to hydrogen, the other abundant element present on Sun’s surface is (1) Helium (2) Neon (3) Argon (4) Oxygen

Last Answer : Helium

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.

In which form is Silicon most frequently found in nature? w) The free element Silicon x) Silicon-Oxygen compounds y) Silicon-Carbon compounds z) Silicon-Metal compounds

Description : In which form is Silicon most frequently found in nature? w) The free element Silicon x) Silicon-Oxygen compounds y) Silicon-Carbon compounds z) Silicon-Metal compounds

Last Answer : ANSWER: X -- SILICON-OXYGEN COMPOUNDS

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

What is the most abundant gas in our atmosphere oxygen hydrogen nitrogen water?

Description : What is the most abundant gas in our atmosphere oxygen hydrogen nitrogen water?

Last Answer : It is nitrogen, followed by oxygen.

Look at the following gases: 1. Carbon dioxide 2. Helium 3. Nitrogen 4. Oxygen The two most abundant gases in the atmosphere are: (a) 1 and 3 (b) 2 and 4 (c) 3 and 4 (d) 1 and 4

Description : Look at the following gases: 1. Carbon dioxide 2. Helium 3. Nitrogen 4. Oxygen The two most abundant gases in the atmosphere are: (a) 1 and 3 (b) 2 and 4 (c) 3 and 4 (d) 1 and 4

Last Answer : Ans:(c)

The element absorbed both in cation and anion form is – (1) Sulphur (2) Nitrogen (3) Calcium (4) Phosphorus

Description : The element absorbed both in cation and anion form is – (1) Sulphur (2) Nitrogen (3) Calcium (4) Phosphorus

Last Answer : (2) Nitrogen Explanation: Nitrogen, required in large quantities for healthy plant growth, is supplied either as a cation (ammonium) or an anion (nitrate). The ratio of these two forms of nitrogen in the nutrient solution can have large effects on both the rate and direction of pH changes with time.

Which element found in all organic compounds? (1) carbon (2) nitrogen (3) calcium (4) none of them

Description : Which element found in all organic compounds? (1) carbon (2) nitrogen (3) calcium (4) none of them

Last Answer : (1) carbon Explanation: Carbon is found in all organic matter, but NOT in inorganic matter organic means chemical compounds with carbon in them. In a more general sense, organic refers to living things.

The element used in treating manic depression is: w) sulfur x) nitrogen y) calcium z) lithium

Description : The element used in treating manic depression is: w) sulfur x) nitrogen y) calcium z) lithium

Last Answer : ANSWER: Z -- LITHIUM 

The element absorbed both in cation and anion form is (1) Sulphur (2) Nitrogen (3) Calcium (4) Phosphorus

Description : The element absorbed both in cation and anion form is (1) Sulphur (2) Nitrogen (3) Calcium (4) Phosphorus 

Last Answer : Nitrogen

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

Which of the following is the most common element in the Universe? (1) Nitrogen (2) Oxygen (3) Hydrogen (4) Carbon

Description : Which of the following is the most common element in the Universe? (1) Nitrogen (2) Oxygen (3) Hydrogen (4) Carbon

Last Answer : (3) Hydrogen Explanation: Hydrogen is the most abundant element in the Universe; helium is second.

All proteins contain at least 5 specific elements. Four of them are carbon, oxygen, hydrogen, and nitrogen. What is the fifth element?

Description : All proteins contain at least 5 specific elements. Four of them are carbon, oxygen, hydrogen, and nitrogen. What is the fifth element?

Last Answer : ANSWER: SULFUR

Which one of the following is a micro-element ? (1) Chlorine (2) Hydrogen (3) Nitrogen (4) Oxygen

Description : Which one of the following is a micro-element ? (1) Chlorine (2) Hydrogen (3) Nitrogen (4) Oxygen

Last Answer : Chlorine

Carborundum is another name of – (1) Silicon carbide (2) Silicon oxide (3) Calcium carbide (4) Calcium oxide

Description : Carborundum is another name of – (1) Silicon carbide (2) Silicon oxide (3) Calcium carbide (4) Calcium oxide

Last Answer : (1) Silicon carbide Explanation: Silicon carbide, also known as carborundum, is a compound of silicon and carbon with chemical formula SiC. It occurs in nature as the extremely rare mineral moissanite. Silicon carbide powder has been massproduced since 1893 for use as an abrasive.

Carborundum is another name of (1) Silicon carbide (2) Silicon oxide (3) Calcium carbide (4) Calcium oxide

Description : Carborundum is another name of (1) Silicon carbide (2) Silicon oxide (3) Calcium carbide (4) Calcium oxide

Last Answer :  Silicon carbide

Cement is usually a mixture of : (1) Calcium silicate and calcium aluminate (2) Calcium silicate and calcium ferrate (3) Calcium aluminate and calcium ferrate (4) Lime stone and silicon dioxide

Description : Cement is usually a mixture of : (1) Calcium silicate and calcium aluminate (2) Calcium silicate and calcium ferrate (3) Calcium aluminate and calcium ferrate (4) Lime stone and silicon dioxide 

Last Answer : Calcium silicate and calcium aluminate

The element which is required by the plant in large quantity – (1) Calcium (2) Nitrogen (3) Phosphorus (4) Sulphur

Description : The element which is required by the plant in large quantity – (1) Calcium (2) Nitrogen (3) Phosphorus (4) Sulphur

Last Answer : (2) Nitrogen Explanation: All plants need nitrogen to make amino acids, proteins and DNA, but the nitrogen in the atmosphere is not in a form that they can use. Plants use nitrogen by absorbing either nitrate or ammonium through the roots.

The element which is required by the plant in large quantity : (1) Calcium (2) Nitrogen (3) Phosphorus(4) Sulphur

Description : The element which is required by the plant in large quantity : (1) Calcium (2) Nitrogen (3) Phosphorus(4) Sulphur

Last Answer : Nitrogen

Cells are composed of A A. Carbon, hydrogen, nitrogen and oxygen B. Sodium, potassium, calcium and hydrogen C. Hydrogen, carbon, sodium, and potassium D. Nitrogen, oxygen, calcium and carbon

Description : Cells are composed of  A A. Carbon, hydrogen, nitrogen and oxygen B. Sodium, potassium, calcium and hydrogen C. Hydrogen, carbon, sodium, and potassium D. Nitrogen, oxygen, calcium and carbon

Last Answer : Carbon, hydrogen, nitrogen and oxygen

Cells are composed of A A. Carbon, hydrogen, nitrogen and oxygen B. Sodium, potassium, calcium and hydrogen C. Hydrogen, carbon, sodium, and potassium D. Nitrogen, oxygen, calcium and carbon

Description : Cells are composed of  A A. Carbon, hydrogen, nitrogen and oxygen B. Sodium, potassium, calcium and hydrogen C. Hydrogen, carbon, sodium, and potassium D. Nitrogen, oxygen, calcium and carbon

Last Answer : Carbon, hydrogen, nitrogen and oxygen

About 98 percent of the mass of every living organism is composed of just six elements including carbon, hydrogen, nitrogen, oxygen and (a) sulphur and magnesium (b) magnesium and sodium (c) calcium and phosphorus (d) phosphorus and sulphur.

Description : About 98 percent of the mass of every living organism is composed of just six elements including carbon, hydrogen, nitrogen, oxygen and (a) sulphur and magnesium (b) magnesium and sodium (c) calcium and phosphorus (d) phosphorus and sulphur.

Last Answer : (d) phosphorus and sulphur.

(2) it is lighter than air Explanation: Helium is the second lightest element and is the second most abundant element in the observable universe, being present at about 24% of the total elemental mass, which is more than 12 times the mass of all the heavier elements combined. A well-known but minor use is as a lifting gas in balloons and airships

Description : (2) it is lighter than air Explanation: Helium is the second lightest element and is the second most abundant element in the observable universe, being present at about 24% of the total elemental mass ... elements combined. A well-known but minor use is as a lifting gas in balloons and airships

Last Answer : Ammonial is a mixture of – (1) aluminium powder and ammonium nitrate (2) aluminium powder and ammonium chloride (3) aluminium powder and ammonium sulphate (4) aluminium powder and potassium nitrate

I will be describing a chemical element. Try to identify it with the fewest number of clues. This chemical element is the most abundant of the rare-earth group. The element is a silver-gray metal which oxidizes readily at room temperature and is an important factor in color television tubes. The atomic number of this element is 58. What is this element?

Description : I will be describing a chemical element. Try to identify it with the fewest number of clues. This chemical element is the most abundant of the rare-earth group. The element is a silver-gray metal ... factor in color television tubes. The atomic number of this element is 58. What is this element?

Last Answer : ANSWER: CERIUM (Ce)

What is the most abundant element in the human body, WEIGHT?

Description : What is the most abundant element in the human body, WEIGHT?

Last Answer : ANSWER: OXYGEN

Which is abundant in Gobar gas? (1) Carbon dioxide (2) Methane (3) Oxygen (4) Hydrogen

Description : Which is abundant in Gobar gas? (1) Carbon dioxide (2) Methane (3) Oxygen (4) Hydrogen

Last Answer : (2) Methane Explanation: Bio gas is a clean unpolluted and cheap source of energy in rural areas. It consists of 55-70% methane which is inflammable. Bio gas is produced from cattle dung in ... called digestion. It helps in reducing the deforestation as it arrests for cutting of trees for firewood.

Which is abundant in Gobar gas? (1) Carbon dioxide (2) Methane (3) Oxygen (4) Hydrogen

Description : Which is abundant in Gobar gas? (1) Carbon dioxide (2) Methane (3) Oxygen (4) Hydrogen

Last Answer : Methane

Which one of the following elements is least likely to be found in commercial fertilisers? (1) Nitrogen (2) Phosphorus (3) Potassium (4) Silicon

Description : Which one of the following elements is least likely to be found in commercial fertilisers? (1) Nitrogen (2) Phosphorus (3) Potassium (4) Silicon

Last Answer : (4) Silicon Explanation: Commercial Fertilizers - a substance containing one or more recognized plant nutrients and that is used for its plant nutrient content or that is designated for use or claimed to have value in promoting plant growth.

Which one of the following elements is least likely to be found in commercial fertilizers? (1) Nitrogen (2) Phosphorous (3) Potassium (4) Silicon

Description : Which one of the following elements is least likely to be found in commercial fertilizers? (1) Nitrogen (2) Phosphorous (3) Potassium (4) Silicon

Last Answer : (4) Silicon Explanation: Fertilizers typically provide, in varying proportions: (1) six macronutrients: nitrogen (N), phosphorus (P), potassium (K), calcium (Ca), magnesium (Mg), and sulfur (S); and (ii) eight ... copper (Cu), iron (Fe), manganese (Mn), molybdenum (Mo), zinc (Zn) and nickel {Ni}.