Metals and their compounds

201.what is horn silver
 
A. silver chloride
 
B. silver bromide
 
C. silver nitrate
 
D. silver iodide
 
Option”A” is correct
202.Why is silver nitrate usually kept in colored bottles only?
 
A. it oxidises in air
 
B. It evaporates in white bottles
 
C. it explodes in the sunlight
 
D. it decomposes in sunlight
 
Option”D” is correct
203.The chemical name of lunar caustic is
 
A. sodium sulfate
 
B. silver nitrate
 
C. calcium carbonate
 
D. mercuric chloride
 
Option”B” is correct
204.Which of the following is coated on a photographic plate?
 
A. silver oxide
 
B. silver bromite
 
C. silver chloride
 
D. silver iodide
 
Option”B” is correct
205.Which element is used to make artificial rain
 
A. sodium iodide
 
B. silver bromide
 
C. ethyl bromide
 
D. silver iodide
 
Option”D” is correct
206.Which of the following metals is found in free state
 
A. aluminium
 
B. Sleep
 
C. Iron
 
D. lead
 
Option”B” is correct
207.Which is the most malleable and malleable metal?
 
A. Sleep
 
B. lead
 
C. aluminium
 
D. Silver
 
Option”A” is correct
208.What is the ‘king of metals’?
 
A. Sleep
 
B. Silver
 
C. Iron
 
D. aluminium
 
Option”A” is correct
209.gold is mainly extracted from which ore
 
A. Selwynite
 
B. calaverite
 
C. these two
 
D. none of these
 
Option”C” is correct
210.In which of the following acid does gold dissolve
 
A. concentrated sulfuric acid
 
B. concentrated nitric acid
 
C. glacial acetic acid
 
D. Amalraj
 
Option”D” is correct