Which element ???

 This question was asked on Koun Banega Karodpati program.

Question 

Which element at room temperature reddish grey lustrous powder  ??

1.  Bromine 

2.  Silicon 

 3.  Selenium 

4.  Phosphorus 

Answer 

Bromine is liquid at room temperature   !!!

Bromine is ruled out  ...  

At room temperature, silicon is a solid element.

Not a powder !!!

On crushing, it becomes powder.

But it is only grey in colour 

Silicon ruled out   .....

 

I don't know much about selenium.....

Correct answer   RED PHOSPHORUS  !!!

Red phosphorus is reddish grey powder at room temperature.

Even selenium is reddish grey powder at room temperature.

People are familiar with Red Phosphorus  !!!

So answer is Red PHOSPHORUS  .......