Ni(CO)4
, Fe(CO)5
and Cr(CO)6
are:

CCl4

is used as a fire extinguisher because

Different layers in graphite are held together
by:

Which element-element bond has the highest
bond dissociation energy ?

Silicones have the general formula

Carbon has no tendency to form complex
compounds because of :

Which of the following statement is false

Trisilylamine [N(SiH3
)
3
] has a

Glass or silica soluble in :

Which of the following halides is the most
stable:

CO forms a volatile compound with

The structure and hybridization of Si(CH3
)
4
is

Phosgene is the common name given to

The formula of white lead is-

The butter of tin is represented by-

The number and type of bonds between two
carbon atoms in CaC2
are :

Which does not exist :

Solder is an alloy of :

Solid carbon dioxide is used as :

Which of the following is correct composition
of water gas

What is the formula of carbon suboxide :

Carborundum is

When tin is treated with concentrated nitric
acid

Lead pipes are corroded quickly by :

Litharge is chemically

Which of the following lead oxides is ‘sindur’:

Which gas is liberated when Al 4C3
is

hydrolysed:

Lead pipes are not suitable for drinking water
because:

Suppose you have to determine the
percentage of carbon dioxide in a sample of
a gas available in a container. Which is the
best absorbed material for the carbon dioxide

The composition of the common glass is:

Which out of the following is called sugar of
lead:

If a person is injured by the shot of a gun
and all the pellets could not be removed, it
may cause poisoning by :

Carbon suboxide C3O2
has :

SiCl4

is easily hydrolysed by water whereas
CCl4
is stable towards hydrolysis in water
because:

Carbon dioxide is a gaseous molecule while
SiO2
is a three dimensional-network solid
because:

Drikold is :

Aqua dag is suspension of.....in water

In the carbon family the melting points of the
elements decrease on descending the ground
because the interatomic bonds become:

Carbon dioxide is not isostructural with

Carbon shows strong catenation while silicon
shows little or no catenation because :

Carbon-60 contains

In the sale of diamonds the unit of weight is
carat One carat is equal to :

When oxalic acid is heated with concentrated
H2SO4
it produces :

Tin cry refers to :

Tin cry is due to :

The thermal stability order for gp. 14 tetra
halides is:

Which of the following is more stable

Least stable hydride is:

Which form of carbon of used in public
address microphones systems is:

The correct order of decreasing ionic nature
of lead dihalides is :