Red phosphorus may be prepared from white phosphorus by :

Red phosphorus may be prepared from white phosphorus by :
by

1 Answer

Answer :

Red phosphorus may be prepared from white phosphorus by : A. adding red colour to white ... white phosphorus at high pressure and 473 k temperature
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Red phosphorus may be prepared from white phosphorus by :

Description : Red phosphorus may be prepared from white phosphorus by :

Last Answer : Red phosphorus may be prepared from white phosphorus by : A. adding red colour to white ... white phosphorus at high pressure and 473 k temperature

White Phosphorus may be removed from red Phosphorus by

Description : White Phosphorus may be removed from red Phosphorus by

Last Answer : White Phosphorus may be removed from red Phosphorus by A. sublimation under reduced pressure B. dissolving ... (2)` D. heating with an alkali solution

White Phosphorus may be removed from red Phosphorus by

Description : White Phosphorus may be removed from red Phosphorus by

Last Answer : White Phosphorus may be removed from red Phosphorus by A. sublimation under reduced pressure B. dissolving ... (2)` D. heating with an alkali solution

Mark correct option a) The weight of TB should not be exceed 30 Kg weight b) MO check slip printed in red in on white or badami paper c) Registered bundle prepared there are three or more uninsured letter. d) Regd bag may contain cash bag, ordinary and VP regd article, insured envelope, regd bundle, ins bundle, ordinary &VP MO e) All the above

Description : Mark correct option a) The weight of TB should not be exceed 30 Kg weight b) MO check slip printed in red in on white or badami paper c) Registered bundle prepared there are three or more uninsured ... and VP regd article, insured envelope, regd bundle, ins bundle, ordinary &VP MO e) All the above

Last Answer : e) All the above

Red and white phosphorus will differ but not in:

Description : Red and white phosphorus will differ but not in:

Last Answer : Red and white phosphorus will differ but not in: A. smell B. solubility in `CHCl_(3)` ... phosphorescence D. reaction with concentrated `HNO_(3)`

Red and white phosphorus will differ but not in:

Description : Red and white phosphorus will differ but not in:

Last Answer : Red and white phosphorus will differ but not in: A. smell B. solubility in `CHCl_(3)` ... phosphorescence D. reaction with concentrated `HNO_(3)`

White phosphorus and Red phosphorus

Description : White phosphorus and Red phosphorus

Last Answer : Find out the difference between : White phosphorus and Red phosphorus

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.

The tip of the match-stick contains – (1) phosphorus pentoxide (2) white phosphorus (3) red phosphorus (4) phosphorus trichloricle

Description : The tip of the match-stick contains – (1) phosphorus pentoxide (2) white phosphorus (3) red phosphorus (4) phosphorus trichloricle

Last Answer : (3) red phosphorus Explanation: A typical modern match is made of a small wooden stick or stiff paper. One end is coated with a material that can be ignited by frictional heat generated by ... in rows stapled into matchbooks. They are commonly sold by tobacconists and many other kinds of shops.

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

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 tip of the match-stick contains (1) phosphorus pentoxide (2) white phosphorus (3) red phosphorus (4) phosphorus trichloride

Description : The tip of the match-stick contains (1) phosphorus pentoxide (2) white phosphorus (3) red phosphorus (4) phosphorus trichloride

Last Answer :  red phosphorus

When ethylalcohol reacts with `Br_(2)` in presencce of red phosphorus the compound formed is

Description : When ethylalcohol reacts with `Br_(2)` in presencce of red phosphorus the compound formed is

Last Answer : When ethylalcohol reacts with `Br_(2)` in presencce of red phosphorus the compound formed is A. `C_(2)H_(6)` B. ` ... C. `CH_(3)Br` D. `C_(2)H_(5)Br`

What temperature does red phosphorus burn at?

Description : What temperature does red phosphorus burn at?

Last Answer : Feel Free to Answer

Which of the following is incorrect? (a) Red soils are rich in iron (b) Black soils are rich in phosphorus nitrogen and organic matter (c) Alluvial soils are rich in potash but poor in phosphorus (d) Red soils are suitable for cultivation of pulses and coarse grains

Description : Which of the following is incorrect? (a) Red soils are rich in iron (b) Black soils are rich in phosphorus nitrogen and organic matter (c) Alluvial soils are rich in potash but poor in phosphorus (d) Red soils are suitable for cultivation of pulses and coarse grains

Last Answer : Ans: (b)

Of the following statements about the major soil types, the incorrect one is : (a) alluvial soils are easy to plough (b) red soils are rich in phosphorus, nitrogen and lime content (c) laterite is typically a soil of tropical regions which receive heavy seasonal rainfall (d) black soil is highly retentive of moisture and very productive

Description : Of the following statements about the major soil types, the incorrect one is : (a) alluvial soils are easy to plough (b) red soils are rich in phosphorus, nitrogen and lime content ( ... regions which receive heavy seasonal rainfall (d) black soil is highly retentive of moisture and very productive

Last Answer : Ans: (b)

Match sticks are made of - (1) Red phosphorus (2) blue phosphorus (3) led nitrate (4) None

Description : Match sticks are made of - (1) Red phosphorus (2) blue phosphorus (3) led nitrate (4) None

Last Answer : (1) Red phosphorus Explanation: Red phosphorus is used in matches. Ferrophosphorus, a combination of phosphorus with iron, is used as an ingredient in high-strength low-alloy steel.

Red soil is poor in which of the following nutrients ? (A) Phosphorus and Sulphur (B) Phosphorus and Nitrogen (C) Nitrogen and Zinc (D) Nitrogen and Potassium

Description : Red soil is poor in which of the following nutrients ? (A) Phosphorus and Sulphur (B) Phosphorus and Nitrogen (C) Nitrogen and Zinc (D) Nitrogen and Potassium

Last Answer : (D) Nitrogen and Potassium

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

The color of Red soil is red due to the presence of the which of the following oxides? a. Ferric b. Aluminium c. Phosphorus d. Calcium

Description : The color of Red soil is red due to the presence of the which of the following oxides? a. Ferric b. Aluminium c. Phosphorus d. Calcium

Last Answer : a. Ferric

The color of Red soil is red due to the presence of the which of the following oxides? a. Ferric b. Aluminium c. Phosphorus d. Calcium

Description : The color of Red soil is red due to the presence of the which of the following oxides? a. Ferric b. Aluminium c. Phosphorus d. Calcium

Last Answer : a. Ferric

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

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

Last Answer : (B) Yellow

Red short iron cracks when bent due to the presence of (A) Sulphur (B) Carbon (C) Phosphorus (D) Silicon

Description : Red short iron cracks when bent due to the presence of (A) Sulphur (B) Carbon (C) Phosphorus (D) Silicon

Last Answer : Answer: Option A

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)

What is formed when white phosphorus is heated at 540 K in the absence of air? -Do You Know?

Description : What is formed when white phosphorus is heated at 540 K in the absence of air? -Do You Know?

Last Answer : answer:

Upon heating`KClO_(3)` in presence of catalytic amount of `MnO_(2)`, a gas `W` is formed. Excess amount of `W` reacts with white phosphorus to given `

Description : Upon heating`KClO_(3)` in presence of catalytic amount of `MnO_(2)`, a gas `W` is formed. Excess amount of `W` reacts with white phosphorus to given `

Last Answer : Upon heating`KClO_(3)` in presence of catalytic amount of `MnO_(2)`, a gas `W` is formed. Excess amount of `W` ... PO_(4)` D. `N_(2)O_(5) and HPO_(3)`

In modern proces, white phosphorus is manufactured by :

Description : In modern proces, white phosphorus is manufactured by :

Last Answer : In modern proces, white phosphorus is manufactured by : A. heating a mixture of phosphorite ... with coke D. heating phosphate mineral with sand

Upon heating`KClO_(3)` in presence of catalytic amount of `MnO_(2)`, a gas `W` is formed. Excess amount of `W` reacts with white phosphorus to given `

Description : Upon heating`KClO_(3)` in presence of catalytic amount of `MnO_(2)`, a gas `W` is formed. Excess amount of `W` reacts with white phosphorus to given `

Last Answer : Upon heating`KClO_(3)` in presence of catalytic amount of `MnO_(2)`, a gas `W` is formed. Excess amount of `W` ... PO_(4)` D. `N_(2)O_(5) and HPO_(3)`

In modern proces, white phosphorus is manufactured by :

Description : In modern proces, white phosphorus is manufactured by :

Last Answer : In modern proces, white phosphorus is manufactured by : A. heating a mixture of phosphorite ... with coke D. heating phosphate mineral with sand

How can white phosphorus be extinquished?

Description : How can white phosphorus be extinquished?

Last Answer : After the chemical litterature spraying the solution of a copper salt may be useful.

White phosphorus is always kept under

Description : White phosphorus is always kept under

Last Answer : Water

Which among the following is white phosphorus?

Description : Which among the following is white phosphorus?

Last Answer : P4

White phosphorus is generally kept under – (1) Alcohol (2) Water (3) Glycerine (4) Kerosene oil

Description : White phosphorus is generally kept under – (1) Alcohol (2) Water (3) Glycerine (4) Kerosene oil

Last Answer : (2) Water Explanation: White phosphorous is kept under water because it reacts with oxygen but not water. Besides, it is insoluble in water. It presents a significant fire hazard due to its extreme reactivity with atmospheric oxygen.

White phosphorus is always kept under (1) benzene (2) kerosene (3) ether (4) water

Description : White phosphorus is always kept under (1) benzene (2) kerosene (3) ether (4) water

Last Answer : (4) water Explanation: White phosphorus is a material made from a common allotrope of the chemical element phosphorus that is used in smoke, tracer, illumination and incendiary munitions. Other common names include WP ... on fire, and cause serious burns or death and that is why it is kept in water.

Smell of white phosphorus?

Description : Smell of white phosphorus?

Last Answer : Garlic

What is formed when white phosphorus is heated at 540 K in the absence of air?

Description : What is formed when white phosphorus is heated at 540 K in the absence of air?

Last Answer : Red phosphorus

Which of the following statements reflect the nursing management of the patient with a white phosphorus chemical burn? a) Do not apply water to the burn. Water should not be applied to burns from lye or white phosphorus because of the potential for an explosion or deepening of the burn.

Description : Which of the following statements reflect the nursing management of the patient with a white phosphorus chemical burn? a) Do not apply water to the burn. Water should not be applied to burns from ... from lye or white phosphorus because of the potential for an explosion or deepening of the burn.

Last Answer : a) Do not apply water to the burn. Water should not be applied to burns from lye or white phosphorus because of the potential for an explosion or deepening of the burn.

Pig iron made from haematite ores free from sulphur, phosphorus and copper, is known as (A) Bessemer pig (B) Grey or foundry pig (C) White or forge pig (D) Mottled pig

Description : Pig iron made from haematite ores free from sulphur, phosphorus and copper, is known as (A) Bessemer pig (B) Grey or foundry pig (C) White or forge pig (D) Mottled pig

Last Answer : Answer: Option A

White phosphorus is generally kept under (1) Alcohol (2) Water (3) Glycerine (4) Kerosene oil

Description : White phosphorus is generally kept under (1) Alcohol (2) Water (3) Glycerine (4) Kerosene oil

Last Answer : Water

White phosphorus is always kept under (1) benzene (2) kerosene (3) ether (4) water

Description : White phosphorus is always kept under (1) benzene (2) kerosene (3) ether (4) water

Last Answer : water

A person is having problems with calcium and phosphorus metabolism in his body. Which one of the following glands may not be functioning properly ?

Description : A person is having problems with calcium and phosphorus metabolism in his body. Which one of the following glands may not be functioning properly ?

Last Answer : A person is having problems with calcium and phosphorus metabolism in his body. Which one of the ... . Thyroid B. Parathyroid C. Parotid D. Pancreas

A person is having problems with calcium and phosphorus metabolism in his body. Which one of the following glands may not be functioning properly? (a) Parotid (b) Pancreas (c) Thyroid (d) Parathyroid

Description : A person is having problems with calcium and phosphorus metabolism in his body. Which one of the following glands may not be functioning properly? (a) Parotid (b) Pancreas (c) Thyroid (d) Parathyroid

Last Answer : (d) Parathyroid

If in the rice crop field, the leaves turn narrow, short, erect, and lemon yellowish and the entire field may appear yellowish, then the rice may be deficient of which nutrient? a. Calcium b. Potassium c. Nitrogen d. Phosphorus

Description : If in the rice crop field, the leaves turn narrow, short, erect, and lemon yellowish and the entire field may appear yellowish, then the rice may be deficient of which nutrient? a. Calcium b. Potassium c. Nitrogen d. Phosphorus

Last Answer : c. Nitrogen

Iron ore may contain (A) Carbon (B) Silicon (C) Phosphorus and manganese (D) All the above

Description : Iron ore may contain (A) Carbon (B) Silicon (C) Phosphorus and manganese (D) All the above

Last Answer : Answer: Option D

The number of red list categories prepared by WCU (IUCN) is

Description : The number of red list categories prepared by WCU (IUCN) is

Last Answer : The number of red list categories prepared by WCU (IUCN) is A. 6 B. 7 C. 8 D. 9

'Red Ink' is prepared from - (1) Phenol (2) Aniline (3) Congo redd (4) Eosin

Description : 'Red Ink' is prepared from - (1) Phenol (2) Aniline (3) Congo redd (4) Eosin

Last Answer : (4) Eosin Explanation: Eosin is a dye used to prepare red ink. Eosin Y is a xanthene dye and is used for the differential staining of connective tissue and cytoplasm.

Red coloured glass is prepared by adding

Description : Red coloured glass is prepared by adding

Last Answer : nickel or cuprous compounds.

Name the gelatin-like substance which is prepared fro various species of red algae growing in Asiatic waters. The prepared product appears in the form of cakes, coarse granules, long shreds or in thin sheets. It is used extensively alone or in combination with various nutritive substances, as a medium for culturing bacteria and various fungi

Description :  Name the gelatin-like substance which is prepared fro various species of red algae growing in Asiatic waters. The prepared product appears in the form of cakes, coarse granules, long ... or in combination with various nutritive substances, as a medium for culturing bacteria and various fungi  

Last Answer : ANSWER: Agar-agar or just Agar

Which acid was first prepared from distilled red ants

Description : Which acid was first prepared from distilled red ants

Last Answer : Selpheric acids