IISER Chemistry - Chemistry Of Non-Metals - I
Exam Duration: 45 Mins Total Questions : 30
Nitrogen can be prepared by heating
- (a)
ammonium chloride and sodium nitrate
- (b)
ammonium dichromate
- (c)
ammonium sulphate and caustic soda
- (d)
ammonium carbonate
Graham's salt is
- (a)
sodium sulphat
- (b)
sodium hexametaphosphate
- (c)
calcium sulphat
- (d)
potassium aluminium sulphat
One mole of N2H4 loses ten moles of electrons to form a new compound X. Assuming that all the nitrogen appears in the new compound, what is the oxidation state of nitriogen in X? (There is no change in the oxidation state of hydrogen).
- (a)
-1
- (b)
+1
- (c)
-3
- (d)
+3
The high temperature produced in Atomic Hydrogen torch is due to
- (a)
decomposition of hydrogen molecules
- (b)
recombination of hydrogen atoms
- (c)
reducing power of hydrogen atoms
- (d)
reactive nature of hydrogen
Which of the following is a peroxide?
- (a)
NO2
- (b)
SO2
- (c)
MnO2
- (d)
BaO2
Which one of the following will not show +ve oxidation state?
- (a)
fluorine
- (b)
chlorine
- (c)
bromine
- (d)
oxygen
Which of the following chemicals is not present in clear hard water?
- (a)
Mg(HCO3)2
- (b)
CaCl2
- (c)
MgSO4
- (d)
CaCO3
Heavy water is obtained by
- (a)
prolonged electrolysis of water
- (b)
dissolving heavy salt in water
- (c)
simple distillation of water
- (d)
removing impurities of calcium and magnesium from water
All the metals form oxides of the type MO, except
- (a)
barium
- (b)
copper
- (c)
silver
- (d)
lead
Heavy water
- (a)
contains dissolved Ca2+ ions only
- (b)
contains dissolved Ca2+ ions and Mg2+ ions
- (c)
is made up of 21H and 168O atoms
- (d)
is a water with maximum density at 4
In the reaction
4NH3(g) + 5O2(g) \(\rightarrow\) 4NO(g) + 6H2O(l)
when one mole of NH3 and one mole of O2 are made to react to completion
- (a)
one mole of NO will be produced
- (b)
all the oxygen will be consumed
- (c)
all the ammonia will be consumed
- (d)
one mole of water is produced
Heavy water is
- (a)
H2O
- (b)
water obtained from distillation
- (c)
D2O
- (d)
water at 4\(°\)C
A hydrocarbon (C5H8) cannot have
- (a)
two double bonds
- (b)
one double bond
- (c)
one triple bond
- (d)
double as well as triple bond
1 - chlorobutane on reaction with alcoholic potash gives
- (a)
1 - butene
- (b)
1 - butanol
- (c)
2 - butene
- (d)
2 - butanol
During debromination oof meso -2, 3- dibromobutane, the major compound formed is
- (a)
n - butane
- (b)
1 - butene
- (c)
cis -2- butene
- (d)
trans -2-butene
Identify Z in the sequence
\({ CH }_{ 3 }-{ CH }_{ 2 }-CH={ CH }_{ 2 }\underrightarrow { HBr/{ H }_{ 2 }{ O }_{ 2 } } Y\\ \quad \quad \quad \quad \quad \quad \quad \quad \quad \quad \quad \quad \ \underrightarrow { { C }_{ 5 }{ H }_{ 5 }\bar { O } { Na }^{ + } } Z\)
- (a)
\({ CH }_{ 3 }-\underset { \overset { | }{ { CH }_{ 3 } } }{ CH } -{ CH }_{ 2 }O-{ CH }_{ 2 }{ CH }_{ 3 }\)
- (b)
\({ CH }_{ 3 }{ CH }_{ 2 }-\underset { \overset { | }{ { CH }_{ 3 } } }{ CH } -O-{ CH }_{ 2 }{ CH }_{ 3 }\)
- (c)
CH3-(CH2)3-O-CH2-CH3
- (d)
CH3-(CH2)4-O-CH3
The primary, secondary and tertiary amines can be best distinguished by
- (a)
mustard oil reaction
- (b)
carbylamine reaction
- (c)
exhaustive alkylation
- (d)
HNO2 treatment
Liebermann's nitroso reaction is used for
- (a)
primary amines
- (b)
secondary amines
- (c)
tertiary amines
- (d)
All of the above
When the same amount of zinc is treated separately with excess of sulphuric acid and excess of sodium hydroxide, the ratio of volumes of hydrogen evolved as
- (a)
1 : 1
- (b)
1 : 2
- (c)
2 : 1
- (d)
9 : 4
When two ice cubes are pressed over each other they united to form one cube. Which of the following forces are responsible to hold them together?
- (a)
Ionic interaction
- (b)
Van der Waals' forces
- (c)
Covalent interaction
- (d)
Hydrogen bond formation
Temporary hardness of water is caused due to the presence of
- (a)
\(CaSO_4\)
- (b)
\(CaCl_2\)
- (c)
\(CaCO_3\)
- (d)
\(CaH(CO_3)_2\)
Both temporary and permanent hardness is removed on boiling water with
- (a)
\(CaSO_4\)
- (b)
\(Na_2CO_3\)
- (c)
\(CaCO_3\)
- (d)
\(CaO\)
\(H_2O_2\) is stored in
- (a)
iron container after addition of stabiliser
- (b)
glass container after addition of stabiliser
- (c)
plastic container after addition of stabiliser
- (d)
Both (b) and (c)
A given solution of \(H_2O_2\) is of 30 volume. Its concentration in terms of molarity is
- (a)
9.1 M
- (b)
2.68 M
- (c)
2.1 M
- (d)
26.8 M
The organic compound 'A' with molecular formula C2H7N produces a compound 'B' ethyl alcohol on reaction with CHCI3 and alcoholic C is produced C is
- (a)
CH3CH2OH
- (b)
CH3CH2N\(\overrightarrow { = } \) C
- (c)
CH3CH2NH2
- (d)
CH3C\(\overrightarrow { = } \)N
Hydrolysis of one mole of peroxodisulphuric acid produces
- (a)
two moles of sulphuric acid
- (b)
two moles of peroxomonosulphuric acid
- (c)
one mole of sulphuric acid and one mole of peroxomonosulphuric acid
- (d)
one mole of sulphuric acid, one mole of peroxomonosulphuric acid and one mole of hydrogen peroxide
The critical temperature of water is higher than that of \(O_2\) because \(H_2O\) molecule has
- (a)
few electrons than oxygen
- (b)
two covalent bonds
- (c)
V-shape
- (d)
dipole moment
In the reaction of 2-phenylpropanamide with NaOBr and H2O to give 1-phenylethylamine
- (a)
there is retention of configuration
- (b)
there is inversion of configuration
- (c)
a mixture of two products is obtained
- (d)
there is no reaction
On heating an aliphatic primary amine with chloroform and ethanolic potassium hydroxide, the organic compound formed is
- (a)
an alkanol
- (b)
an alkanediol
- (c)
an alkyl cyanide
- (d)
an alkyl isocyanide
Very pure hydrogen (99.9%) can be made by which of the following processes?
- (a)
Reaction of methane with steam
- (b)
Mixing natural hydrocarbone of high molecular weight
- (c)
Electrolysis of water
- (d)
Reaction of salts like hydrides with water
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