Silicon is an example of - (1) A metal (2) A non- metal (3) A metalloid (4) Both (2) and (3)

Silicon is an example of - (1) A metal (2) A non- metal (3) A metalloid (4) Both (2) and (3)
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(3) A metalloid Explanation: Metals like Na and Mg are towards the left-hand side of the Periodic Table while the non-metals like sulphur and chlorine are found on the right-hand side.
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Description : What kind of metal is silicon ?

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Write one example of each of (i) a metal which is so soft that, it can be cut with knife and a non-metal which is the hardest sustance. (ii) a metal and a non-metal which exist as liquid at room temperature. Answer. -Science

Description : Write one example of each of (i) a metal which is so soft that, it can be cut with knife and a non-metal which is the hardest sustance. (ii) a metal and a non-metal which exist as liquid at room temperature. Answer. -Science

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Last Answer : Silicon J. Bargelius discovered.

In what year was silicon discovered ?

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Last Answer : Silicon was discovered in 1824 .

What is the boiling point of silicon ?

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Last Answer : Silicon has a boiling point of 2355 degrees Celsius.

What is the melting point of silicon ?

Description : What is the melting point of silicon ?

Last Answer : Silicon has a melting point of 1420 degrees Celsius.

What is the relative atomic mass of silicon ?

Description : What is the relative atomic mass of silicon ?

Last Answer : Relative atomic mass of silicon 28 .

Where did the name Silicon come from ?

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Last Answer : The name silicon comes from the Latin word sylex. Which means shiny stone.

What is the atomic number of silicon ?

Description : What is the atomic number of silicon ?

Last Answer : The atomic number of silicon is 14 .

Where is the position of silicon in the periodic table ?

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Last Answer : The position of silicon ( Si) in the periodic table is in phase 3 and group 14.

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 I.C Chip used in a computer is made up of - (1) Silicon (2) Chromium (3) Gold (4) Lead

Description : The I.C Chip used in a computer is made up of - (1) Silicon (2) Chromium (3) Gold (4) Lead

Last Answer : (1) Silicon Explanation: An integrated circuit or monolithic integrated circuit (also referred to as an IC, a chip, or a microchip) is a set of electronic circuits on one small flat piece (or "chip") of semiconductor material that is normally silicon.

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.

The element used for vulcanizing rubber is - (1) Sulphur (2) Bromine (3) Silicon (4) Phosphorus

Description : The element used for vulcanizing rubber is - (1) Sulphur (2) Bromine (3) Silicon (4) Phosphorus

Last Answer : (1) Sulphur Explanation: The vulcanization of neoprene or polychloroprene rubber (CR rubber) is carried out using metal oxides (specifically MgO and ZnO, sometimes Pb3O4) rather than sulfur compounds which are presently used with many natural and synthetic rubbers.

Silicone is a polymer of – (1) Tetraalkyl silane (2) Silicon tetrachloride (3) Dialkyl dichloro silane (4) Silane

Description : Silicone is a polymer of – (1) Tetraalkyl silane (2) Silicon tetrachloride (3) Dialkyl dichloro silane (4) Silane

Last Answer : (3) Dialkyl dichloro silane Explanation: In order to manufacture silicones, alkyl-substituted chlorosilanes are used as starting material. Since dimethylsilane contains -OH group at the end of ... increases. However, the hydrolysis of alkyl trichlorosilane gives very complex cross linked polymer.

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.

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.

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 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 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 : (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% ... and potassium (3%). All of the remaining elements together make up less than 1% of the earth's mass.

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.

In vulcanization, natural rubber is heated with- (1) Carbon (2) Sulphur (3) Silicon (4) Phosphorus

Description : In vulcanization, natural rubber is heated with- (1) Carbon (2) Sulphur (3) Silicon (4) Phosphorus

Last Answer : (2) Sulphur Explanation: Vulcanization of rubber is a process of improvement of the rubber elasticity and strength by heating it in the presence of sulfur, which results in three-dimensional crosslinking of the chain rubber molecules (polyisoprene) bonded to each other by sulfur atoms.