Inorganic QA

Question 1

Colour of Mn2+ ion

Answer 1

very light pink

Question 2

Colour of Al3+

Answer 2

Colourless

Question 3

Colour of Pb0 (s)

Answer 3

Pale Yellow

Question 4

Colour of Fe2+

Answer 4

Pale Green

Question 5

Colour of PbI2

Answer 5

Pale Yellow

Question 6

Color of Br2 in CCl4

Answer 6

Reddish Brown

Question 7

Color of AgBr

Answer 7

Very Pale Yellow

Question 8

Color of CuO

Answer 8

Black

Question 9

Colour of Cu2O (Not CuO)

Answer 9

Reddish Brown

Question 10

Color of Fe2O3

Answer 10

Reddish Brown

Question 11

Color of CuCl2

Answer 11

Green

Question 12

Color of CuCO3

Answer 12

green

Question 13

Colour of Cr3+

Answer 13

Bluish Green

Question 14

Colour of I2 in CCl4

Answer 14

Purple

Question 15

Colour of metal powder

Answer 15

Grey

Question 16

Colour of MnO2 (S)

Answer 16

Black

Question 17

Colour of FeO (S)

Answer 17

Black

Question 18

Colour of very dilute I2 in KI solution

Answer 18

Very pale yellow

Question 19

CO3- and Dilute HCl/H2SO4

Answer 19

CO2 gives white precipitate in limewater

Question 20

AgNO3 and Cl-

Answer 20

White precipitate SOLUBLE in dilute NH3

Question 21

AgNO3 and I-

Answer 21

Yellow precipitate INSOLUBLE in dilute NH3

Question 22

AgNO3 and Br-

Answer 22

PALE CREAM precipitate INSOLUBLE in dilute NH3

Question 23

Pb(NO3)2 and I-

Answer 23

YELLOW ppt soluble in HOT water

Question 24

Pb(NO3)2 and Br-

Answer 24

White ppt soluble in HOT water

Question 25

Pb(NO3)2 and Cl-

Answer 25

White ppt soluble in HOT water

Question 26

SO4 2- (Sulfate) and BaCl2

Answer 26

White precipitate insoluble in dilute acid

Question 27

Sulfite So32- and BaCl2

Answer 27

White precipitate soluble in dilute acid

Question 28

Sulfite (SO32-) and Pb(NO3)2

Answer 28

White precipitate soluble in dilute acid

Question 29

SO4 2- (Sulfate) and Pb(NO3)2

Answer 29

White ppt soluble in dilute acid

Question 30

CrO42- and BaCl2

Answer 30

Yellow ppt sol in dilute acid to give an orange solution

Question 31

Pb(No3)2 and CrO42-

Answer 31

Yellow ppt sol in dil acid to give an orange solution

Question 32

Colour of CrO42-

Answer 32

Yellow

Question 33

HCL and CrO42-

Answer 33

Orange Cr2O72- formed

Question 34

KI and Pb2+

Answer 34

Yellow ppt sol in hot solubtion. Gives Golden Crystals upon forminh

Question 35

KI and Cu2+

Answer 35

White ppt in brown solution

Question 36

Fe3+ (Not Fe2+) and KI

Answer 36

Brown I2 formed

Question 37

Mn2+ and NaOH

Answer 37

Off-white precipitate rapidly turning brown in contact with air

Question 38

Mn2+ and Na2CO3

Answer 38

Off-white precipitate rapidly turning brown in contact with air

Question 39

Mn2+ and NH3

Answer 39

Off-white precipitate rapidly turning brown in contact with air

Question 40

Cu2+ and NaCO3

Answer 40

Pale blue ppt (turn black upon heating)

Question 41

Cu2+ and NH3

Answer 41

Blue ppt in ex sol giving dark blue sol

Question 42

Cr3+ and Na2CO3

Answer 42

Grey green ppt of Cr(OH)3 with CO2

Question 43

Cr3+ and NaOH

Answer 43

Grey green ppt sol in xs giving dark green solution

Question 44

Cr3+ and NH3

Answer 44

Grey green ppt

Question 45

CrO42- and Pb2+

Answer 45

Bright yellow ppt

Question 46

Zinc and NH3

Answer 46

White ppt soluble in excess(SPECIAL)

Question 47

Test for NO3-

Answer 47

NH3 liberated on heating with OH- and Al foil

Question 48

Test for SO42-

Answer 48

Gives wihite ppt with Ba2+ and Pb2+

Question 49

Test for SO32-

Answer 49

Gives white ppt with Ba2+

SO2 liberated with dilute acid

Question 50

Ba2+ and NaOH

Answer 50

NO PPT (if it is pure)