Chemistry - Chemistry of Heavier Metals

Question - 1

When a copper (II) sulphate is treated with excess ammonia, it forms

  • A a black precipitate
  • B a deep blue solution
  • C a red precipitate
  • D a white precipitate  turning black

Question - 2

By the interaction between FeSO4  solution  and acidified KMnO4   solution

  • A iron (III) is reduced
  • B iron (II) is reduced
  • C KMnO4 is oxidised
  • D iron  (II) is reduced

Question - 3

when CuSO4  reacts with aq KI, the products are

  • A CuI2  +  K2SO4
  • B Cu2I2   +   K2SO4
  • C Cu2I2  + K2SO4   + I2
  • D Cu + k2SO4 + I2

Question - 4

Stainless steel contains

  • A 2.6 to 5.0% Ni
  • B 1.5 to 2.0% Cr
  • C 17 to 18% Cr and 8% Ni
  • D 3.6% Mn

Question - 5

Ferrous sulphate has many uses.one of its important uses is

  • A as a red pigment
  • B in the manufacture of blue black ink
  • C in the manufacture of chalks
  • D in the preparation  of H2S

Question - 6

German silver is an alloy of 

  • A Cu and Zn
  • B Au,Cu, and Zn
  • C Ag and Ni 
  • D Cu,Zn and Ni

Question - 7

Cu2+  will have the electronic configuration

  • A 1s2;2s2;2p6;3s2;3p8;3d10
  • B 1s2;2s2;2p6;3s2;3p6;3d9;4s1
  • C 1s2;2s2;2p6;3s2;3p6;3d9
  • D 1s2;2s2;2p6;3s2;3p6;3d10

Question - 8

By fusing dry silver chloride with sodium carbonate,we get pure

  • A Chlorine
  • B carbon  dioxide
  • C silver
  • D sodium

Question - 9

Identify the statement which is not correct:

  • A CuSo4 reacts with KI in aqueous solution to give Cu2I2 
  • B CuSO4  reacts with KCI in aqueous solution to give Cu2CI2
  • C CuSO4  reacts with NAOH and glucose in aqueous medium to give Cu2O
  • D CUSO4 on strong heating gives CuO

Question - 10

When pyrolusite is fused with KOH in presence of Cu,the mass becomes

  • A green
  • B black
  • C red
  • D pink
Facebook
Twitter
Google+
Email