The most reactive allotropic form of phosphorus is __________ phosphorus. (A) Red (B) Yellow (C) Violet (D) Black

The most reactive allotropic form of phosphorus is __________
phosphorus.
(A) Red
(B) Yellow
(C) Violet
(D) Black
by

1 Answer

Answer :

(B) Yellow
by

Related questions

Which one of the following forms of phosphorus is most reactive? (1) Black phosphorus (2) White phosphorus (3) Violet phosphorus (4) Red phosphorus

Description : Which one of the following forms of phosphorus is most reactive? (1) Black phosphorus (2) White phosphorus (3) Violet phosphorus (4) Red phosphorus

Last Answer : (2) White phosphorus Explanation: White phosphorus is the most reactive form of phosphorus. It is made up of discrete P4 tetrahedra which are subjected to very high angular strain as the angles ... reactive. It ignites spontaneously at about 50°C, and at much lower temperatures if finely divided.

Which one of the following forms of phosphorus is most reactive? (1) Black phosphorus (2) White phosphorus (3) Violet phosphorus (4) Red phosphorus

Description : Which one of the following forms of phosphorus is most reactive? (1) Black phosphorus (2) White phosphorus (3) Violet phosphorus (4) Red phosphorus

Last Answer : White phosphorus

The most stable allotropic form of phosphorous is the __________ phosphorous. (A) White (B) Black (C) Yellow (D) Red

Description : The most stable allotropic form of phosphorous is the __________ phosphorous. (A) White (B) Black (C) Yellow (D) Red

Last Answer : (B) Black

Allotropic modifications of phosphorus include each of the following EXCEPT: w) red phosphorus x) black phosphorus y) white phosphorus z) green phosphorus

Description : Allotropic modifications of phosphorus include each of the following EXCEPT: w) red phosphorus x) black phosphorus y) white phosphorus z) green phosphorus

Last Answer : ANSWER: Z -- GREEN PHOSPHORUS

Pick out the wrong statement. (A) Yellow phosphorous which is the most reactive allotropic form of phosphorous is transported under water (B) Apatite is the principal material present in phosphate rock which is chemically Ca10 (PO4 )6 (F, Cl, OH) (C) Urea is more hygroscopic than ammonium nitrate (D) Nitrogen fixation means the process of bringing atmospheric nitrogen into combination i.e. into nitrogen compound fo

Description : Pick out the wrong statement. (A) Yellow phosphorous which is the most reactive allotropic form of phosphorous is transported under water (B) Apatite is the principal material present in ... fixation means the process of bringing atmospheric nitrogen into combination i.e. into nitrogen compound fo

Last Answer : (C) Urea is more hygroscopic than ammonium nitrate

Pick out the wrong statement. (A) 'Green acid' is the other name of phosphoric acid produced by the reaction of phosphate rock & sulphuric acid (B) Chemically unreactive nature of red phosphorous is due to its polymeric structure (C) Red phosphorous is the most reactive allotropic form of phosphorous (D) Red phosphorous, which is used in the manufacture of safety matches, is converted into white phosphorous by vaporisation followed by condensation

Description : Pick out the wrong statement. (A) 'Green acid' is the other name of phosphoric acid produced by the reaction of phosphate rock & sulphuric acid (B) Chemically unreactive nature of ... in the manufacture of safety matches, is converted into white phosphorous by vaporisation followed by condensation

Last Answer : (C) Red phosphorous is the most reactive allotropic form of phosphorous

Consider the following statements. 1. Ozone is an allotropic form of oxygen 2. Phosphorus is present in DNA and RNA 3. Halogens occur in free state in nature. 4. The compounds of chlorine are used as cooling agents. The correct statements are: (a) 1 and 4 (b) 2 and 4 (c) 3 and 4 (d) 1 and 2

Description : Consider the following statements. 1. Ozone is an allotropic form of oxygen 2. Phosphorus is present in DNA and RNA 3. Halogens occur in free state in nature. 4. The compounds of chlorine are used as cooling agents. The correct statements are: (a) 1 and 4 (b) 2 and 4 (c) 3 and 4 (d) 1 and 2

Last Answer : Ans:(d)

23 Which one of the following sets of colour combinations is added in colour vision in TV? A. Red, green and blue B. Orange, black and violet C. White, red and Yellow D. Green, Yellow and Blue

Description : 23 Which one of the following sets of colour combinations is added in colour vision in TV? A. Red, green and blue B. Orange, black and violet C. White, red and Yellow D. Green, Yellow and Blue

Last Answer : ANSWER: A

Conversion of yellow phosphorus to red phosphorous is done in retorts at 250-450°C in the (A) Presence of an inert atmosphere (B) Presence of a reducing atmosphere (C) Absence of air (D) Presence of an oxidising atmosphere

Description : Conversion of yellow phosphorus to red phosphorous is done in retorts at 250-450°C in the (A) Presence of an inert atmosphere (B) Presence of a reducing atmosphere (C) Absence of air (D) Presence of an oxidising atmosphere

Last Answer : (C) Absence of air

Violet, indigo, blue and green, yellow, orange and red; these are the colors you have seen after the storm has fled. What am I? -Riddles

Description : Violet, indigo, blue and green, yellow, orange and red; these are the colors you have seen after the storm has fled. What am I? -Riddles

Last Answer : I am a Rainbow.

The refractive indices for lights of violet, yellow and red colours for a flint glass prism are respectively 1.632, 1.620 and 1.613. Find the dispersi

Description : The refractive indices for lights of violet, yellow and red colours for a flint glass prism are respectively 1.632, 1.620 and 1.613. Find the dispersi

Last Answer : The refractive indices for lights of violet, yellow and red colours for a flint glass prism are ... Find the dispersive power of the prism material.

The deviation caused for red, yellow and violet colours for crown glass prism are `2.84^(@),3.28^(@)` and `3.72^(@)` respectively. The dispersive powe

Description : The deviation caused for red, yellow and violet colours for crown glass prism are `2.84^(@),3.28^(@)` and `3.72^(@)` respectively. The dispersive powe

Last Answer : The deviation caused for red, yellow and violet colours for crown glass prism are `2.84^( ... respectively. The dispersive power of prism material is:

Lights of different colours are arranged below in order of increasing wavelengths: 1. Violet, indigo, blue 2. Green, orange, red 3. Red, green, indigo 4. Blue, green, yellow Which of the above are in proper sequence? (a) 1 only (b) 1 and 2 (c) 2 and 3 (d) 1 and 4

Description : Lights of different colours are arranged below in order of increasing wavelengths: 1. Violet, indigo, blue 2. Green, orange, red 3. Red, green, indigo 4. Blue, green, yellow Which of the above are in proper sequence? (a) 1 only (b) 1 and 2 (c) 2 and 3 (d) 1 and 4

Last Answer : Ans:(d)

Maximum photosynthetic activity occurs in - (1) blue and red region of light (2) green and yellow region of light (3) blue and orange region of light (4) violet and orange region of light

Description : Maximum photosynthetic activity occurs in - (1) blue and red region of light (2) green and yellow region of light (3) blue and orange region of light (4) violet and orange region of light

Last Answer : (1) blue and red region of light Explanation: Wavelength of light between 400 nm and 700 nm is most effective for photosynthesis. This light is called photo synthetically active radiation (PAR). ... in red and minimum in blue region. In both these regions light is absorbed by chlorophylls.

Which of the following types of light are strongly absorbed by plants? (1) Violet and orange (2) Blue and red (3) Indigo and yellow (4) Yellow and violet

Description : Which of the following types of light are strongly absorbed by plants? (1) Violet and orange (2) Blue and red (3) Indigo and yellow (4) Yellow and violet

Last Answer : (2) Blue and red

A man with colour blindness will see red as - (1) Yellow (2) Blue (3) Green (4) Violet

Description : A man with colour blindness will see red as - (1) Yellow (2) Blue (3) Green (4) Violet

Last Answer : (3) Green Explanation: Colour-blindness is the inability to distinguish the differences between certain colours. This condition results from an absence of colour-sensitive pigment in the cone cells of the ... type is red-green colour-blindness, where red and green are seen as the same color.

Which of the following types of light are strongly absorbed by plants? (1) Violet and orange (2) Blue and red (3) Indigo and yellow (4) Yellow and violet

Description : Which of the following types of light are strongly absorbed by plants? (1) Violet and orange (2) Blue and red (3) Indigo and yellow (4) Yellow and violet

Last Answer : (2) Blue and red Explanation: As shown in detail in the absorption spectra, chlorophyll absorbs light in the red (long wavelength) and the blue (short wavelength) regions of the visible light spectrum. Green light is not absorbed but reflected.

Which components of light are absorbed by chlorophyll? (1) Violet and red (2) Indigo and orange (3) Blue and red (4) Violet and yellow

Description : Which components of light are absorbed by chlorophyll? (1) Violet and red (2) Indigo and orange (3) Blue and red (4) Violet and yellow

Last Answer : (1) Violet and red Explanation: Chlorophyll is a green pigment found in cyanobacteria and the chloroplasts of algae and plants. Chlorophyll is an extremely important biornolecule, critical in ... and near-green portions of the spectrum, hence the green color of chlorophyll-containing tissues.

Which of these travels in glass with minimum velocity? (1) red light (2) violet light (3) green light (4) yellow light

Description : Which of these travels in glass with minimum velocity? (1) red light (2) violet light (3) green light (4) yellow light

Last Answer : (2) violet light Explanation: Red light has a longer wavelength than violet light and the other colours of visible light have intermediate wavelengths. As light passes from air into glass, there is ... and is refracted the least, while violet waves travel the slowest and is refracted the most.

Which of the following colour of light deviates least through the prism? (1) yellow (2) green (3) violet (4) red

Description : Which of the following colour of light deviates least through the prism? (1) yellow (2) green (3) violet (4) red

Last Answer : (4) red Explanation: In refracting media like glass prism, water, etc., lights of different colors travel with different speeds. The speed of violet colour is the least, while the speed of red ... violet colour is deviated the most, while red colour is deviated least on passing through the prism.

Which colour of light shows maximum deviation when passed through a prism? (1) Red (2) Green (3) Violet (4) Yellow

Description : Which colour of light shows maximum deviation when passed through a prism? (1) Red (2) Green (3) Violet (4) Yellow

Last Answer : (3) Violet Explanation: When passed through a prism violet colour of light shows maximum deviation. As white light passes through a prism, the voilet component, having the minimum wave length observes the maximum refractive index for the prism and, thus, gets deviated to the maximum extent.

Which of the following colors of light rays has the shortest wavelength? A. Yellow B. Violet C. Red D. Blue

Description : Which of the following colors of light rays has the shortest wavelength? A. Yellow B. Violet C. Red D. Blue

Last Answer : B. Violet

Which one of the following sets of color combinations is added in color vision in TV’? A. Red, green and blue (Answer) B. Orange, back and violet C. White. red and yellow D. Yellow, green and blue

Description : Which one of the following sets of color combinations is added in color vision in TV’? A. Red, green and blue (Answer) B. Orange, back and violet C. White. red and yellow D. Yellow, green and blue

Last Answer : A. Red, green and blue (Answer)

Which of the following coloured light has the least speed in glass prism? (a) Violet (b) Yellow (c) Red (d) Green

Description : Which of the following coloured light has the least speed in glass prism? (a) Violet (b) Yellow (c) Red (d) Green

Last Answer : (a) Violet

Which of the following colour is least scattered by fog, dust or smoke : A. Violet B. Blue C. Red D. Yellow

Description : Which of the following colour is least scattered by fog, dust or smoke : A. Violet B. Blue C. Red D. Yellow

Last Answer : C. Red

One scientist cultured Cladophora in a suspension of Azotobacter and illuminated the culture by splitting light through a prism. He observed that bacteria accumulated mainly in the region of (a) violet and green light (b) indigo and green light (c) orange and yellow light (d) blue and red light.

Description : One scientist cultured Cladophora in a suspension of Azotobacter and illuminated the culture by splitting light through a prism. He observed that bacteria accumulated mainly in the region of (a) violet and green light (b) indigo and green light (c) orange and yellow light (d) blue and red light.

Last Answer : (d) blue and red light.

A beam of white light is passed through a diffraction grating and the resulting spectrum is allowed to fall on a screen. Which one of the following is the color of light that undergoes the greatest deviation from its original direction? Is it: A. Red B. yellow C. Blue D. violet Engineering

Description : A beam of white light is passed through a diffraction grating and the resulting spectrum is allowed to fall on a screen. Which one of the following is the color of light that undergoes the greatest deviation from its original direction? Is it: A. Red B. yellow C. Blue D. violet Engineering

Last Answer : A. Red

A color with a wavelength longer than that of yellow is: A. Red B. Blue C. Violet D. Green

Description : A color with a wavelength longer than that of yellow is: A. Red B. Blue C. Violet D. Green

Last Answer : A. Red

A color with a wavelength longer than that of yellow is: w) red x) blue y) violet z) green

Description : A color with a wavelength longer than that of yellow is: w) red x) blue y) violet z) green

Last Answer : ANSWER: W -- RED

Which color light has the highest frequency? w) green x) violet y) red z) yellow

Description : Which color light has the highest frequency? w) green x) violet y) red z) yellow

Last Answer : ANSWER: X -- VIOLET

A beam of white light is passed through a diffraction grating and the resulting spectrum is allowed to fall on a screen. Which one of the following is the color of light that undergoes the greatest deviation from its original direction. Is it: w) red x) yellow y) blue z) violet

Description : A beam of white light is passed through a diffraction grating and the resulting spectrum is allowed to fall on a screen. Which one of the following is the color of light that undergoes the greatest deviation from its original direction. Is it: w) red x) yellow y) blue z) violet

Last Answer : ANSWER: W -- RED

Which of the following colors of visible light has the longest wavelength? Is it: w) violet x) green y) yellow z) red

Description : Which of the following colors of visible light has the longest wavelength? Is it: w) violet x) green y) yellow z) red

Last Answer : ANSWER: Z -- RED

A man with colour blindness will see red as (1) Yellow (2) Blue (3) Green (4) Violet

Description : A man with colour blindness will see red as (1) Yellow (2) Blue (3) Green (4) Violet

Last Answer : Green

Which components of light are absorbed by chlorophyll ? (1) Violet and red (2) Indigo and orange (3) Blue and red (4) Violet and yellow

Description : Which components of light are absorbed by chlorophyll ? (1) Violet and red (2) Indigo and orange (3) Blue and red (4) Violet and yellow

Last Answer : Violet and red

Maximum photosynthetic activity occurs in : (1) blue and red region of light (2) green and yellow region of light (3) blue and orange region of light (4) violet and orange region of light

Description : Maximum photosynthetic activity occurs in : (1) blue and red region of light (2) green and yellow region of light (3) blue and orange region of light (4) violet and orange region of light

Last Answer : blue and red region of light

Which of these travels in glass with minimum velocity ? (1) red light (2) violet light (3) green light (4) yellow light

Description : Which of these travels in glass with minimum velocity ? (1) red light (2) violet light (3) green light (4) yellow light

Last Answer : violet light

Which of the following colour of light deviates least through the prism? (1) yellow (2) green (3) violet (4) red

Description : Which of the following colour of light deviates least through the prism? (1) yellow (2) green (3) violet (4) red

Last Answer : red

Which colour of light shows maximum deviation when passed through a prism ? (1) Red (2) Green (3) Violet (4) Yellow

Description : Which colour of light shows maximum deviation when passed through a prism ? (1) Red (2) Green (3) Violet (4) Yellow

Last Answer : Violet

Which is more reactive phosphorus or chlorine?

Description : Which is more reactive phosphorus or chlorine?

Last Answer : Reactivity of an element depends on following parameters : Electronegativity - EN for cl is 3.5 whereas that for S is 2.8, it's quite obvious that cl has more power to gain electrons wrt that of S. ... to complete 'octet' for cl only 1 electron is required, whereas it is 2 electrons in case of S.

Which of the following phosphorus is the most reactive?

Description : Which of the following phosphorus is the most reactive?

Last Answer : Which of the following phosphorus is the most reactive? A. Violet phosphorus B. Scarlet phosphorus C. Red phosphorus D. White phosphorus

Which of the following phosphorus is the most reactive?

Description : Which of the following phosphorus is the most reactive?

Last Answer : Which of the following phosphorus is the most reactive? A. Violet phosphorus B. Scarlet phosphorus C. Red phosphorus D. White phosphorus

Heat evolved/absorbed during conversion of a substance from one allotropic form to another is termed as the heat of (A) Fusion (B) Vaporisation (C) Transition (D) None of these

Description : Heat evolved/absorbed during conversion of a substance from one allotropic form to another is termed as the heat of (A) Fusion (B) Vaporisation (C) Transition (D) None of these

Last Answer : (C) Transition

Absorption/evolution of heat during conversion of a substance from one allotropic form to another is termed as the heat of (A) Sublimation (B) Fusion (C) Transition (D) Vaporisation

Description : Absorption/evolution of heat during conversion of a substance from one allotropic form to another is termed as the heat of (A) Sublimation (B) Fusion (C) Transition (D) Vaporisation

Last Answer : C) Transition

Explain how yellow phosphorous is converted into red phosphorus.

Description : Explain how yellow phosphorous is converted into red phosphorus. 

Last Answer : Conversion of Yellow Phosphorous to Red phosphorous  Yellow phosphorus is converted into red phosphorous in covered retorts containing a reflux condenser to retain any evolved phosphorous vapors. The vessel is gradually ... as reaction is exothermic. Reaction P4 (Yellow) + heating = P4 (Red)

Pick out the wrong statement. (A) Tin can be readily and very easily drawn into very fine wire (B) Tin can be severely cold worked without the necessity of annealing due to its low recrystallisation temperature (C) Tin exists in two allotropic forms

Description : Pick out the wrong statement. (A) Tin can be readily and very easily drawn into very fine wire (B) Tin can be severely cold worked without the necessity of annealing due to its low recrystallisation temperature (C) Tin exists in two allotropic forms

Last Answer : (A) Tin can be readily and very easily drawn into very fine wire

Titanium metal (A) Exists in three allotropic forms (B) Cannot be welded (C) Is used in oceanographic and space exploration applications (D) None of these

Description : Titanium metal (A) Exists in three allotropic forms (B) Cannot be welded (C) Is used in oceanographic and space exploration applications (D) None of these

Last Answer : (C) Is used in oceanographic and space exploration applications

Tanks used for the storage of petroleum products (which are inflammable) should be painted with a __________ paint. (A) Black (B) White (C) Red (D) Yellow

Description : Tanks used for the storage of petroleum products (which are inflammable) should be painted with a __________ paint. (A) Black (B) White (C) Red (D) Yellow

Last Answer : (B) White