What is the element required for solar energy conversion ? (1) Beryllium (2) Tantalum (3) Silicon (4) Ultra pure carbon

What is the element required for solar energy conversion ? (1) Beryllium (2) Tantalum (3) Silicon (4) Ultra pure carbon
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Silicon
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What is the element required for solar energy conversion? (1) Beryllium (2) Tantalum (3) Silicon (4) Ultra pure carbon

Description : What is the element required for solar energy conversion? (1) Beryllium (2) Tantalum (3) Silicon (4) Ultra pure carbon

Last Answer : (3) Silicon Explanation: The most prevalent bulk material for solar cells is crystalline silicon (abbreviated as a group as c-Si), also known as "solar grade silicon". Bulk silicon is ... into multiple categories according to crystallinity and crystal size in the resulting ingot, ribbon, or wafer.

The element required for Solar energy conversion - (1) Beryllium (2) Silicon (3) Tantalum (4) Ultra pure carbon

Description : The element required for Solar energy conversion - (1) Beryllium (2) Silicon (3) Tantalum (4) Ultra pure carbon

Last Answer : (2) Silicon Explanation: Energy conversion. n. (General Physics) is the process of changing one form of energy into another, such as nuclear energy into heat or solar energy into electrical energy.

What is the element required for solar energy conversion ---? A. Ultra pure carbon B. Silicon (Answer) C. Beryllium D. Tantalum

Description : What is the element required for solar energy conversion ---? A. Ultra pure carbon B. Silicon (Answer) C. Beryllium D. Tantalum

Last Answer : B. Silicon (Answer)

Necessary element of change in solar energy to electric energy – (1) Berilliurn (2) Silicon (3) Tantelum (4) Pure Copper

Description : Necessary element of change in solar energy to electric energy – (1) Berilliurn (2) Silicon (3) Tantelum (4) Pure Copper

Last Answer : (2) Silicon Explanation: A small solar electric or photovoltaic (PV) converts solar energy into electrical energy. Solar cells consist of semiconductor materials which work on photoelectric effect. Silicon remains the most popular material for solar cells.

Necessary element of change in solar energy to electric energy (1) Berillium (2) Silicon (3) Tantelum (4) Pure Copper

Description : Necessary element of change in solar energy to electric energy (1) Berillium (2) Silicon (3) Tantelum (4) Pure Copper

Last Answer : Silicon

The element found in the surface of the Moon is – (1) Tin (2) Tungsten (3) Tantalum (4) Titanium

Description : The element found in the surface of the Moon is – (1) Tin (2) Tungsten (3) Tantalum (4) Titanium

Last Answer : (4) Titanium Explanation: Elements known to be present on the lunar surface include, among others, oxygen(O), silicon (Si), iron (Fe), magnesium (Mg), calcium (Ca), aluminium (Al),manganese (Mn) and titanium (Ti).

Which one of the following elements has valence electrons in the n = 3 shell? A beryllium B oxygen C silicon D neon E hydrogen

Description : Which one of the following elements has valence electrons in the n = 3 shell? A beryllium B oxygen C silicon D neon E hydrogen

Last Answer : C silicon

Emeralds contain the element (a) carbon (b) silica (c) beryllium (d) gold

Description : Emeralds contain the element (a) carbon (b) silica (c) beryllium (d) gold

Last Answer : Ans:(c) Physics

The element with the least atomic size from Carbon, Nitrogen, Boron and Beryllium is

Description : The element with the least atomic size from Carbon, Nitrogen, Boron and Beryllium is

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

Which of the following finds the least commercial use? (A) Pure iron (B) High silicon iron (C) Low carbon steel (D) High carbon steel

Description : Which of the following finds the least commercial use? (A) Pure iron (B) High silicon iron (C) Low carbon steel (D) High carbon steel

Last Answer : (A) Pure iron

with which element Beryllium shows diagonal relation ship?

Description : with which element Beryllium shows diagonal relation ship?

Last Answer : Ans : Al

Which of the following is the element represented by the symbol B? w)Barium x)Bismuth y)Boron z)Beryllium

Description : Which of the following is the element represented by the symbol B? w)Barium x)Bismuth y)Boron z)Beryllium

Last Answer : ANSWER: Y -- BORON

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.

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

Which of the following elements forms a tetrahedra structure? w) carbon x) beryllium y) boron z) fluorine

Description : Which of the following elements forms a tetrahedra structure? w) carbon x) beryllium y) boron z) fluorine

Last Answer : ANSWER: W -- CARBON

A sharp moving boundary is obtained between the pure solvent and solute containing layer in (A) Chromatography (B) Immuno Reactivity (C) Ultra Centrifugation (D) Solubility curve

Description : A sharp moving boundary is obtained between the pure solvent and solute containing layer in (A) Chromatography (B) Immuno Reactivity (C) Ultra Centrifugation (D) Solubility curve

Last Answer : Answer :C

Mention the methods of obtaining ultra pure metal.

Description : Mention the methods of obtaining ultra pure metal.

Last Answer : a) Fractional crystallization or zone refining. b) Vacuum melting c) Distillation d) Chemical vapour deposition e) Liquation process

What is the sign of tantalum ?

Description : What is the sign of tantalum ?

Last Answer : Ta tantalum signal

What is Tantalum Capacitor ?

Description : What is Tantalum Capacitor ?

Last Answer : Tantalum capacitor is a special type of electrolytic capacitor that uses tantalum ( Ta) and titanium ( Ti) metals instead of aluminum ( Al) . These capacitors are long-lived and have very low leakage current , small in size but high capacitance.

What is melting point of tantalum?

Description : What is melting point of tantalum?

Last Answer : What is the answer ?

Reactor used in the production of polyvinyl chloride (PVC) is made of (A) Nickel or glass lined steel (B) Aluminium (C) Tantalum (D) Lead

Description : Reactor used in the production of polyvinyl chloride (PVC) is made of (A) Nickel or glass lined steel (B) Aluminium (C) Tantalum (D) Lead

Last Answer : (A) Nickel or glass lined steel

__________ has the highest melting point out of the following. (A) Tungsten (B) Zirconium (C) Molybdenum (D) Tantalum

Description : __________ has the highest melting point out of the following. (A) Tungsten (B) Zirconium (C) Molybdenum (D) Tantalum

Last Answer : Option A

__________ is the most important element, which controls the physical properties of steel. (A) Manganese (B) Silicon (C) Carbon (D) Vanadium

Description : __________ is the most important element, which controls the physical properties of steel. (A) Manganese (B) Silicon (C) Carbon (D) Vanadium

Last Answer : (C) Carbon

The yield point phenomenon observed in annealed low carbon steel is due to the presence of the following element. (A) Silicon (B) Carbon (C) Phosphorous (D) Chromium

Description : The yield point phenomenon observed in annealed low carbon steel is due to the presence of the following element. (A) Silicon (B) Carbon (C) Phosphorous (D) Chromium

Last Answer : Option B

(1) the action of ultraviolet rays on oxygen Explanation: The majority of tropospheric ozone formation occurs when nitrogen oxides (NOx), carbon monoxide (CO ) and volatile organic compounds (VOCs), such as xylene, react in the atmosphere in the presence of sunlight containing ultra violet rays. NOx, CO, and VOCs are called ozone precursors. CO + 2O2 + CO2 + O3

Description : (1) the action of ultraviolet rays on oxygen Explanation: The majority of tropospheric ozone formation occurs when nitrogen oxides (NOx), carbon monoxide (CO ) and volatile organic compounds (VOCs), such as xylene, ... violet rays. NOx, CO, and VOCs are called ozone precursors. CO + 2O2 + CO2 + O3

Last Answer : Water is not effective in extinguishing a fire caused by petrol because - (1) the flame is too hot for water to cool it down (2) water and petrol react chemically (3) water and petrol are ... (4) water and petrol are immiscible with each other and petrol which forms the upper layer continues to burn

How do beryllium carbon and oxygen produce star?

Description : How do beryllium carbon and oxygen produce star?

Last Answer : They don't. But stars do produce Beryllium, Carbon and Oxygen.Stars start with Hydrogen, which undergoes atomic fusion, andproduces Helium. As helium builds up in the sun's core, otherfusion ... on. Stars the size of thesun do not contain enough energy to produce elements heavier thanoxygen.

How the elements beryllium carbon and oxygen produces stars such as the sun?

Description : How the elements beryllium carbon and oxygen produces stars such as the sun?

Last Answer : It is not specifically those elements which "produce stars".Whatever elements happen to be around clump together, throughgravity, and form the star.

_________ is the hardest oxide and is hence used where high wear resistance at high temperature is required. (A) Beryllium (B) Zirconia (C) Alumina (D) Magnesia

Description : _________ is the hardest oxide and is hence used where high wear resistance at high temperature is required. (A) Beryllium (B) Zirconia (C) Alumina (D) Magnesia

Last Answer : (C) Alumina

Which of the following parts of the sunlight makes the solar cooker hot? (1) Ultra violet (2) Red light (3) Infra red (4) Cosmic rays

Description : Which of the following parts of the sunlight makes the solar cooker hot? (1) Ultra violet (2) Red light (3) Infra red (4) Cosmic rays

Last Answer : (3) Infra red Explanation: Glass transmits visible light but blocks infrared thermal radiation from escaping. This amplifies the heat trapping effect. A solar cooker, or solar oven, is a device which ... The vast majority of the solar cookers presently in use are relatively cheap, low-tech devices.

Which of the following parts of the sunlight makes the solar cooker hot ? (1) Ultra violet (2) Red light (3) Infra red (4) Cosmic rays

Description : Which of the following parts of the sunlight makes the solar cooker hot ? (1) Ultra violet (2) Red light (3) Infra red (4) Cosmic rays

Last Answer : Infra red

The material used in solar cells contains (1) Tin (2) Silicon (3) Caesium (4) Thallium

Description : The material used in solar cells contains (1) Tin (2) Silicon (3) Caesium (4) Thallium

Last Answer : (2) Silicon Explanation: A solar cell (also called a photovoltaic cell) is an electrical device that converts the energy of light directly into electricity by the photovoltaic ... silicon, polycrystalline silicon, amorphous silicon, cadmium telluride, and copper iridium selenide/sulfide.

The material used in solar cells contains (1) Tin (2) Silicon (3) Caesium (4) Thallium

Description : The material used in solar cells contains (1) Tin (2) Silicon (3) Caesium (4) Thallium

Last Answer : Silicon

Silicon is used in which of the following? (1) Semiconductors (2) solar energy devices (3) transistors (4) All of these

Description : Silicon is used in which of the following? (1) Semiconductors (2) solar energy devices (3) transistors (4) All of these

Last Answer : (4) All of these Explanation: Silicon is a chemical element (its symbol in chemical formula expressions is "Si") that is present in sand and glass and which is the best known semiconductor material in electronic components. Its atomic number is 14.

For which of the following substances, the resistance decreases with increase in temperature? (1) Pure silicon (2) Copper (3) Nichrome (4) Platinum

Description : For which of the following substances, the resistance decreases with increase in temperature? (1) Pure silicon (2) Copper (3) Nichrome (4) Platinum

Last Answer : (3) Nichrome Explanation: Nichrome has high resistance and it is called a resistor.

Write the basic chemical reaction in the epitaxial growth process of pure silicon.

Description : Write the basic chemical reaction in the epitaxial growth process of pure silicon.

Last Answer : The basic chemical reaction in the epitaxial growth process of pure silicon is the hydrogen reduction of silicon tetrachloride. 1200C SiCl4 + 2H2 Si + 4 HCl

Pure semiconductors silicon and germanium are a) Extrinsic b) Intrinsic c) Insulator d) Diodes

Description : Pure semiconductors silicon and germanium are a) Extrinsic b) Intrinsic c) Insulator d) Diodes

Last Answer : b) Intrinsic

For which of the following substances, the resistance decreases with increase in temperature? (1) Pure silicon (2) Copper (3) Nichrome (4) Platinum

Description : For which of the following substances, the resistance decreases with increase in temperature? (1) Pure silicon (2) Copper (3) Nichrome (4) Platinum

Last Answer : Nichrome

If temperature of a pure silicon specimen is increased, then

Description : If temperature of a pure silicon specimen is increased, then (a) only number of free electrons increase. (b) only number of free holes increase. (c) number of free holes and free electrons increases. (d) only number of free holes decrease. 

Last Answer : Number  of  free  holes  and   free  electrons  increases.

Impurity atoms to be added to pure silicon in order to make a p-type semiconductor belongs to

Description : Impurity atoms to be added to pure silicon in order to make a p-type semiconductor belongs to (a) Phosphorous (b) Boron (c) Antimony (d) Aluminium 

Last Answer : Boron  , a  group  three  element.

Pure silicon is

Description : Pure silicon is (a) a p-type semiconductor (b) an n-type semiconductor (c) an intrinsic semiconductor (d) an extrinsic semiconductor 

Last Answer : Pure  silicon  is  an  intrinsic  semiconductor because  its  own  electrons   are  responsible   for   conduction.

The process of photosynthesis involves conversion of (1) chemical energy into radiant energy (2) chemical energy into mechanical energy (3) solar energy into chemical energy (4) mechanical energy into solar energy

Description : The process of photosynthesis involves conversion of (1) chemical energy into radiant energy (2) chemical energy into mechanical energy (3) solar energy into chemical energy (4) mechanical energy into solar energy

Last Answer : (3) solar energy into chemical energy Explanation: Photosynthesis is the process by which light energy is converted into chemical. Energy by organisms. Carbon dioxide, and water are the raw materials of this process. The light energy comes from the sun and its end products are oxygen and glucose.

Conversion of sound energy into electrical energy is done by – (1) Solar cell (2) Gramophone (3) Microphone (4) Loudspeaker

Description : Conversion of sound energy into electrical energy is done by – (1) Solar cell (2) Gramophone (3) Microphone (4) Loudspeaker

Last Answer : (3) Microphone Explanation: Conversion of sound energy into electrical energy is done by microphone.

The principle involved in the conversion of solar energy into electrical energy is called

Description : The principle involved in the conversion of solar energy into electrical energy is called

Last Answer : photo voltaic effect.

The energy conversion efficiency of a solar cell does not depend on a) solar energy insolation b) inverter c) area of the solar cell d) maximum power output

Description : The energy conversion efficiency of a solar cell does not depend on a) solar energy insolation b) inverter c) area of the solar cell d) maximum power output

Last Answer : b) inverter

Which of the following is not covered in 8 missions under the Climate Action Plan of Government of India? (A) Solar power (B) Waste to energy conversion (C) Afforestation (D) Nuclear energy

Description : Which of the following is not covered in 8 missions under the Climate Action Plan of Government of India? (A) Solar power (B) Waste to energy conversion (C) Afforestation (D) Nuclear energy

Last Answer : (D) Nuclear energy

Which one of the following non-conventional energy sources can be exploited most economically? (A) Solar (B) Wind (C) Geo-thermal (D) Ocean Thermal Energy Conversion (OTEC)

Description : Which one of the following non-conventional energy sources can be exploited most economically? (A) Solar (B) Wind (C) Geo-thermal (D) Ocean Thermal Energy Conversion (OTEC)

Last Answer : Answer: A