Qualitative analysis

Question 1

Blue

Answer 1

Copper Salts

Question 2

Dark Green

Answer 2

Chromium salts

Question 3

Green

Answer 3

Salts of Fe,Ni,Cu or Cr

Question 4

Light Yellow or Brown

Answer 4

Salts of Fe(ic)

Question 5

Dark Brown

Answer 5

PbO2, Bi2S2

Question 6

Reddish Brown

Answer 6

Fe2O3

Question 7

Light Pink

Answer 7

Salts of Mn

Question 8

Pink

Answer 8

Salts of Co

Question 9

Red

Answer 9

HgO, HgI2, Pb3O4

Question 10

Orange Red

Answer 10

Sb2S3

Question 11

Oxide which is yellow when hot and white when cold

Answer 11

ZnO

Question 12

Oxide which is Reddish Brown when hot and yellow when cold

Answer 12

PbO

Question 13

Oxide which is black when hot and Red when cold

Answer 13

HgO, Pb3O4

Question 14

Oxide which is black when hot and red brown when cold

Answer 14

Fe203

Question 15

Which gas rekindles a glowing splinter?

Answer 15

O2

Question 16

Which compund turns mercurous nitrate paper black ?

Answer 16

NH3

Question 17

Which compound turns acidified potassium dichromate green?

Answer 17

SO2

Question 18

Which compound has a pungent smell and white fumes with ammonia are formed due to it?

Answer 18

HCl

Question 19

Which compound has smell of rotten eggs and turns lead acetate paper black?

Answer 19

H2S

Question 20

Which gas turns starch iodide paper blue?

Answer 20

NO2 and Br2

Question 21

Which element is voilet in colour and turns starch paper blue?

Answer 21

I2

Question 22

Which gas bleaches moist litmus paper, indigo solution,and starch iodide paper blue?

Answer 22

Cl2

Question 23

Formula of Zeolite

Answer 23

Na2Al2OSiO8.xH2O

Question 24

Chile Saltpeter

Answer 24

NaNO8

Question 25

Malachite, Blue Vitriol contain which common compound?

Answer 25

Copper is the common compound in Malachite and Blue Vitriol

Question 26

Borax, Soda Ash, Washing Soda, Baking Soda ,Zeolite, contain which common compound?

Answer 26

Sodium in the common compound in Borax, Soda Ash, Washing Soda, Baking Soda

Question 27

Lime stone,Gypsum, Plaster of Paris,Dolomite, Flourospar, Quick Lime, Slaked Lime, Soda Lime contain which common compound?

Answer 27

Calcium is the common compound in Lime stone,Gypsum, Plaster of Paris,Dolomite, Flourospar, Quick Lime, Slaked Lime, Soda Lime

Question 28

Dolomite,Magnesite, Sorels Cement, Carnalite contain which common compound?

Answer 28

Magnesium is the common compound in Dolomite,Magnesite, Sorels Cement, Carnalite