Inorganic Chemistry Answers

calculate the no. of unpaired electrons in O2- and O2^2- ions by drawing molecular orbital diagram.

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

Question 1 : Teflon is form from a derivative of-------------
Chlorine
Iodine
Bromine
Flourine

Question 2 : The thermal stability of hydrogen halides-------------------
has no fix pattern across the group
is constant across the group
decreases from HF to HI
increases from HF to HI

Question 3 : Which of these halogens shows no basic properties
Flourine
Bromine
Chlorine
Iodine

Question 4 : A derivative of ------------- is used in making photographic plates
Flourine
Iodine
Bromine
Chlorine

Question 5 : One of these is not a pseudo halogen.
Teflon
selenocyanogen
cyanogen
thiocyanogen

Question 16 : Which of these is true of interstitial carbide?
they are non stoichiometric compound
they are soluble compounds
They are binary compounds
they are amorphous compounds

Question 17 : Lead dioxide is used as ----
anti knock
dentoator
gun powder
bleach

Question 18 : Which of the group V oxoacids is manufactured by Ostwald process?
nitric acid
nitrous oxide
dinitrogen tetraoxide
nitrogen hydroxide

Question 19 : Which of the group V metals can not be obtained from its sulphide ore?
lead
Bismouth
phosphorus
Nitrogen

Question 20 : Which of the following is responsible for the easy hydrolysis of lead halides ?
availability of lone pair of electron in P orbital
completely filled d orbitals by electron
Availability of d-orbitals and low bond energy of Pb-H bond
availability of lone pair of electron in d orbital

Question 11 : Which of these is not a carbide?
dative
covalent
interstitial
ionic

Question 12 : Silicates are salts of----
silicon tetraoxide
Silica gel
tetrachloro silicon
Crystaamite

Question 13 : Which of these is not a raw material for the cement manufacture?
lime
silica
Silicate
alumina

Question 14 : When carbon is linked to elements of lower or approximately the same electronegativity,the binary compounds formed are termed
hydroxides
halides
carbides
oxides

Question 15 : Which of the group V elements give only one oxidation state?
bismouth
phosphorus
nitrogen
lead

Question 6 : The heavier elements of group IV functions as------
lewis acid
Lowry base
lewis base
Lowry acid

Question 7 : Which of these is not an interstitial carbide?
tungsten carbide
titanium carbide
Vanadium carbide
boron carbide

Question 8 : One of these is not a form of silica
cristobalite
tridymite
Flint
Freons

Question 9 : Zeolites is used in water as----------
softener
purifiers
disinfectants
oxidants

Question 10 : Which of these is an example of covalent carbides?
TiC
tetrachloro silicon
dicloro silicon
SiC

Question 1 : Mixed chloroflorocarbons are known as ---------------
teflon
halides
Freons
carbenes

Question 2 : The following are crystaline forms of silica, except------------
tridymite
quartz
cristobalite
Crystaamite

Question 3 : Aqua regia is a mixture of Nitric acid and----------------
concentrated Hydrochloric acid
conc sulphuric acid
limewater
water

Question 4 : Solid CO2 is known as----
dry ice
hydrocarbon
Teflon
carbene

Question 5 : The purest form of silicon dioxide is----
cristobalite
silibolite
rock crystal
silicates

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