Allotropes of Phosphorus

Q.

What is White Phosphorus?

Q. which of the following is not an isomorphous pair:- (1) KMnO4 and KClO4 (2) Na2CO3 and Na2SO3 (3) CaF2 and K2O (4) FeSO4.7H2O and MgSO4.7H2O

Q.

White phosphorus can be separated from red phosphorus by:

1. Sublimation

2. Distillation

3. Dissolving in $C{S}_2$

4. Heating with alkali solution

Q.

Which phosphorus is most reactive?

Q. Among the following, which one is a wrong statement ?

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Q. Given below are four statements regarding the allotropes of Phosphorus. Which of them is/are incorrect?

1. White Phosphorus is a waxy, molecular solid that has a garlic-like odour
2. Red Phosphorus is more reactive than white phosphorus and it is soluble in carbon disulphide
3. Red Phosphorus can be cut with a knife
4. Red Phosphorus is a non-toxic, odourless polymeric solid at room temperature

Q.

Which of the following allotropes of phosphorus is the most reactive?

1. Red phosphorus

2. White phosphorus

3. Scarlet phosphorus

4. Violet phosphorus

Q. $\beta -$phosphorus is conductor of electricity but white phophorus, red phosphorus and $\alpha -$phophorus are not.

1. True
2. False

Q. 39. if B is doped with Si (a) n-type semiconductor is formed (b) p-type semiconductor is formed (c) insulator is formed (d) polymer is formed

Q. What is the hybridization of sulphur in S2O7²-

Q. Which of the following statement regarding allotropic forms of phosphorus is incorrect?

1. Red phosphorus is polymeric in nature consisting of chains of $P_4$ tetrahedra
2. White phosphorus is more reactive than red and black phosphorus due to high angular strain
3. Black phosphorus has two forms $\alpha$-black and $\beta$-black phosphorus
4. Red phosphorus on heating catches fire readily and gives dense red fumes of $P_4{0}_{10}$