Inorganic Chemistry Answers

What happens when Prussian Blue (KFe[Fe(CN)6]) is added to the three solutions (3M NaOH, 3M HCl, 10% H2SO4) at room temperature? Please include the chemical equations.

What happens when each inorganic pigments is placed in each of the following solutions? Details below.

4 Inorganic Pigments: barium white, zinc yellow, chromium oxide green, prussian blue

3 Solutions at room temp: 3M NaOH, 3M HCl, 10% H2SO4

Please explain what happens to each pigment in each solution. Maybe even include a chemical equation?

is mechanical bond a weak bond? means what type of bonding is mechanical bonding?

Write born Haber cycle for BaO crystal ?

Question 16 : Which of the following does not function as lewis acid?
Bi
N
Ar
Sb

Question 17 : Which of the following is prepared by haber process?
phosphorus
bismouthine
Ammonia
nitric acid

Question 18 : Which of the following is the most abundant uncombined element accessible to man?
N
He
O
H

Question 19 : One of these is not a raw material for the cement manufacture?
lime
alumina
silica
silicate

Question 20 : Which of the following is used as a rocket fuel?
Ammonia
,hydrazine
hydrazoic acid
phosphine

Question 11 : Which of these compounds is used in toothpastes as a source of fluoride ion to harden dental enamel
stannous fluoride
germanium fluoride
carbon tetra fluoride
Silicate fluoride

Question 12 : Silicones are a group of-------------
Organosilicon polymers
tetrachloro silicate polymer
silicon dioxide
organosilicates

Question 13 : Which form of phosphorous is most reactive?
red
white
brown
black

Question 14 : Which of these group V elements form the most stable pentahalides
B
P
As
Sb

Question 15 : Which of the group V element forms alloys with metals?
Ar
Bi
Sb
N

Question 6 : The purest form of silicon dioxide is-----
rock crystal
cristobalite
silicates
silibolite

Question 7 : Which of the following trihalides of nitrogen is stable?
chloride
bromide
floride
iodide

Question 8 : Which of the following is used in baking powder and toothpastes?
calcium phosphate
Calcium chloride
sodium tripolyphosphate
nitric acid

Question 9 : Glass is produced from mixture of silicates mainly of
K and Ca
Na and Al
K and Al
Na and Ca

Question 10 : Which of these will give a positive brown ring test?
nitric oxide
nitric dioxide
nitrogen oxide
dinitrogen tetraoxide

Question 16 : Which of these is not a component of lead-acid battery?
lead chloride
Tetraoxosulphate(VI) acid
lead oxide
spongy lead

Question 17 : Flourine has all but one of these properties
it is the strongest oxidising agent in the whole group
The oxidation state of is -1
The size is larger than the other halogens
It can oxidise all the other halide ions to their respective elements

Question 18 : Fluorine reacts with alkalies to yield------------
the hypohalite
the salt
the oxide
the acid

Question 19 : Nitrogen is obtained commercially from
coke
water vapour
rock
air

Question 20 : Which of these halogens does not form oxoacids ?
Flourine
Iodine
Bromine
Chlorine

Question 11 : PVC pipes are manufactured using
Flourine
Iodine
Bromine
Chlorine

Question 12 : Which of these statements is not true of halogens ?
They are only one electron short of the noble gas configuration
Fluorine is the strongest oxidising agent in the whole group
They form the cation X+
The bond in interhalogen compounds is polar

Question 13 : Compounds formed by the interaction of one halogen with other halogens are called ------------
pseudo halogens
polyhalogens
interhalogens
Polyhalides

Question 14 : Which of these halogen oxides is useful in the estimation of CO
Flourine
Chlorine
Iodine
Bromine

Question 15 : Which of these statements is not true of group V elements ?
antimony is a metalloid
Nitrogen exists as a diatomic molecule
Phosphorus exits both in gaseous and solid forms
bismuth is predominantly non- metallic in nature

Question 6 : Which of these is not a group V element?
Calcium
Nirogen
Arsenic
Phosphorus

Question 7 : Halogen means-------------
reducing agent
oxidizing agent
bleaching agent
salt producer

Question 8 : Nitrogen is used for all but one of the following
freezing of foodstuffs
freeze grinding of normally soft and rubbery materials
in making fire works
in the packaging of processed foods

Question 9 : Deficiency of one of these leads to goitre in humans
Flourine
Iodine
Chlorine
Bromine

Question 10 : One of these statements is not true of oxides of halogen.
All oxides of halogens have positive free energies of formation
Chlorine oxides are used as bleaching agents
Except for that of iodine all oxides tend to be explosive
The higher oxides tend to be more stable than the lower