NTSE SAT Chemistry - Carbon and Its Compounds
Exam Duration: 45 Mins Total Questions : 30
Amorphous form of carbon is
- (a)
Fullerene
- (b)
Graphite
- (c)
Diamond
- (d)
Charcoal
Which of the following molecular formulae represents a cyclic compound?
- (a)
C2H4
- (b)
C3H8
- (c)
C6H12
- (d)
C4H10
Reaction of bromine water and unsaturated hydrocarbon is an example of ____________ type of reaction
- (a)
Displacement
- (b)
Substitution
- (c)
Addition
- (d)
None of these
The compound with highest boiling point is
- (a)
Butanol
- (b)
Ethanol
- (c)
Methanol
- (d)
Propanol
There is regular increase in boiling point among successive members of homologons series
Alcohols are denatured by adding
- (a)
Methanol
- (b)
CuSO4
- (c)
Either A or B
- (d)
None of these
Methanol makes alcohols poisonous and CuSO4 gives colour to it. Pyridine which is a foulsmelling substance can also be used to denature alcohols
The double bond between the two carbon atoms in the C2H4 molecule indicates:
- (a)
Two pairs of mobile electrons
- (b)
Two pairs of shared electrons
- (c)
Two pairs of unpaired electrons
- (d)
Two pairs oflone electrons
The structural formula of 2-butene is ___________.
- (a)
CH3- CH = C = CH2
- (b)
CH3 - C \(\equiv\) C - CH3
- (c)
CH3 = CH - CH2 - CH3
- (d)
CH3 - CH = CH - CH3
In ethane (C2H6) each carbon atom is bonded to:
- (a)
Six atoms
- (b)
Three atoms
- (c)
Two atoms
- (d)
Four atoms
Micelles are ________________.
- (a)
soap molecules in clean water
- (b)
drops of oil or dirt that surrounds the molecule
- (c)
a tadpole shaped fatty acid
- (d)
cluster of soap molec·ules surrounding the dirt particle
I-propanol and 2-propanol are:
- (a)
chain isomers
- (b)
position isomers
- (c)
functional isomers
- (d)
homologues
Diamond is not a good conductor of electricity because
- (a)
it is very hard
- (b)
its structure is very compact
- (c)
it is not water soluble
- (d)
is has no free electrons to conduct electric current
Which of the following compound contain single covalent bond?
- (a)
Oxygen
- (b)
Nitrogen
- (c)
Methane
- (d)
Carbon dioxide
Covalent bond between atoms is formed by
- (a)
loss of electrons
- (b)
gain of electrons
- (c)
sharing of electrons
- (d)
loss and gain of electrons both
Select the alkyne form the following
- (a)
C4H8
- (b)
C5H8
- (c)
C7H19
- (d)
None of these
The first compound to be prepared in the laboratory was
- (a)
methane
- (b)
ethyl alcohol
- (c)
acetic acid
- (d)
urea
The IUPAC name of CH3 - C(CH3)(OH) CH2 - CH(CH3) CH3 is-
- (a)
2,4-dimethyl pent;n -2-ol
- (b)
2,4- dimethyl pentan -4-ol
- (c)
2,2- dimethyl butane
- (d)
butanol -2-one
Ethanol on complete oxidation gives
- (a)
CO2 and water
- (b)
acetaldehyde
- (c)
acetic acid
- (d)
acetone
A by product of soap industry is
- (a)
sodium hydroxide
- (b)
sodium palmitate
- (c)
glycerol
- (d)
Both B & C
Which of the following has the lowest percentage of carbon?
- (a)
Peat
- (b)
Anthracite
- (c)
Bituminous
- (d)
Lignite
Destructive distillation of wood does not give:
- (a)
Wood tar
- (b)
Wood charcoal
- (c)
CO
- (d)
CO2
In diamond, each C-atom is joined to _________ carbon atoms.
- (a)
Two
- (b)
Four
- (c)
One
- (d)
Three
In graphite, the C-atom is arranged in
- (a)
Tetrahedral
- (b)
Octahedral
- (c)
Hexagonal planar rings
- (d)
None of these
Which of the following gas is non combustiable
- (a)
CO
- (b)
CO2
- (c)
CH4
- (d)
H2
Hydrocarbons are compounds of
- (a)
C and O
- (b)
C, H and O
- (c)
C and CI
- (d)
C and H
The second member of alkane is:
- (a)
Ethane
- (b)
Propane
- (c)
Butane
- (d)
Methane
Methane is insoluble in:
- (a)
Ether
- (b)
Water
- (c)
Alcohol
- (d)
CCl4
The chemical formula of marsh gas is:
- (a)
C2H6
- (b)
CH4
- (c)
C3H8
- (d)
C4H10
Wood charcoal is an excellent fuel because:
- (a)
Its ignition temperature is low
- (b)
It burns without smoke
- (c)
It has absorbing property
- (d)
Both a and b
The gas used in the aerated drink
- (a)
O2
- (b)
CO2
- (c)
NO2
- (d)
CO
The foul smelling substance added to detect leakage of LPG is:
- (a)
Ethyl mercapton
- (b)
Propane
- (c)
Ethane
- (d)
Butane
