Questions

It was the Qing Dynasty, who was a Manchu Dynasty whose rule ended in 1911 Chinese revolution.

Fear of places and situations that might cause panic, helplessness or embarrassment is called Agoraphobia. 

Fear of crossing road causes some panic in them and comes under Agoraphobia.

The gram formula mass is nothing but molar mass.

Composition :

Symbol      Element       Atomic weight       Atoms
   

     P         Phosphorus       30.973762               1       = 30.973
   

     O         Oxygen             15.9994                  4       =  63.998
   

     N         Nitrogen            14.0067                  3       =  42.020
   

     H         Hydrogen          1.00794                  12      =  12.096

Total   =  30.973+63.998+42.020+12.096 = 149.087

Alum is a common alum, potassium aluminum sulphate K2SO4.Al2SO43.24H2O which makes colloidally suspended impurities in water such as clay to settle down.

Virat Kohli surpasses Brian Lara with sixth Test double hundred as captain.

After reaching the milestone, Virat Kohli became the first captain to score six double tons in Test cricket. He has also become the first player to score six double centuries in just a span of 17 months. He also became the second Indian to score back-to-back double centuries, only after Vinod Kambli.

Apart from him, the only other cricketers who have scored back-to-back double Test tons are Wally Hammond, Don Bradman, Kambli, Kumar Sangakkara and Michael Clarke.