Chemistry - Chemistry Of Non-Metals - I
Exam Duration: 45 Mins Total Questions : 30
Graham's salt is
- (a)
sodium sulphat
- (b)
sodium hexametaphosphate
- (c)
calcium sulphat
- (d)
potassium aluminium sulphat
Which one of the following does not contain peroxide ion?
- (a)
MnO2
- (b)
Na2O2
- (c)
BaO2
- (d)
SrO2
Commercially from which one of the following H2 is obtained?
- (a)
coal gas
- (b)
water gas
- (c)
producer gas
- (d)
marsh gas
Atomic hydrogen is
- (a)
also called ortho-hydrogen
- (b)
also called para-hydrogen
- (c)
also called deuterium
- (d)
Produced by blowing a jet of hydrogen through electric arc
The unique properties properties of hydrogen may be attributed to its
- (a)
metallic character
- (b)
non-metallic character
- (c)
atomic size
- (d)
atomic structure
Siliver chloride dissolves in solution of ammonia but not in water because
- (a)
ammonia is better solvent than water
- (b)
silver ion forms a complex ion with water
- (c)
ammonia is a stronger based than water
- (d)
The dipole moment of water is higher than that of ammonia molecule
Hard water contains
- (a)
2D
- (b)
Salts of Ca2+ and Mg2+
- (c)
D
- (d)
1H
One of the following is an incorrect statement. Point out that one
- (a)
Hardnes of water depends upon its soap consuming power
- (b)
Temporary hardness is due to bicarbonate of calcium and magnesium
- (c)
Permanent hardness is due to soluble suphat chlorides of Cu and Mg
- (d)
Permanent hardness can be removed by boiling the water
Nitrogen can be obtained by heating
- (a)
ammonium carbonate
- (b)
ammonium sulphate and caustic soda
- (c)
ammonium chloride and sodium nitrate
- (d)
ammonium chloride and sodium nitrite
The reaction conditions leading to the best yield of C2H5CI are
- (a)
\({ C }_{ 2 }{ H }_{ 6 }(excess)+{ CI }_{ 2 }\xrightarrow [ light ]{ hv } \)
- (b)
\({ C }_{ 2 }{ H }_{ 6 }+{ CI }_{ 2 }\xrightarrow [ light ]{ hv } \)
- (c)
\({ C }_{ 2 }{ H }_{ 6 }+{ CI }_{ 2 }(excess)\xrightarrow [ light ]{ hv } \)
- (d)
None of the above
Acidic hydrogen is present in
- (a)
ethyne
- (b)
ethene
- (c)
cyclodecapentene
- (d)
ethane
Which of the following annulenes is antiaromatic?
- (a)
Benzene
- (b)
Cyclobutadiene
- (c)
Cyclodecapentene
- (d)
Cyclooctatetraene
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
The most reactive isotope of H is
- (a)
protium
- (b)
deuterium
- (c)
tritium
- (d)
All have same reactivity
Hydrogen adsorbed on palladium is known as
- (a)
atomic H
- (b)
ortho H
- (c)
occluded H
- (d)
heavy H
\(H_2O_2\) 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)
Consider the following statements about intermolecular and intramolecular hydrogen bonds,
I. both type of H-bonds are temperature dependent.
II. Intramolecular H-bond disappears on increasing the concentration.
III. Intramolecular H-bond disappears on decreasing the concentration.
IV. the boiling point of compounds having intramolecular H-bond are lower than that of those compounds which have intermolecular H-bond
Which of the statement given above are correct?
- (a)
I, II and IV
- (b)
III and IV
- (c)
I, III and IV
- (d)
I and II
Consider the following statement about ortho and para-hydrogen,
I. in ortho-hydrogen, the spin of protons are in the same direction.
II. ortho-hydrogen is more stable than the para form in the ambident condition.
III. at ordinary temperature, ordinary hydrogen is a mixture of about 75% para and 25% ortho forms.
IV. the two forms have similar chemical properties but differ in physical properties like specific heat and thermal conductivity.
Which of the statement given above are correct?
- (a)
I, II and III
- (b)
II, III and IV
- (c)
I, III and IV
- (d)
I, II and IV
Which of the following statement are correct regarding \(D_2O\) and \(H_2O\)?
I. \(D_2O\) reacts with \(Al_4C_3\) at a faster rate than does \(H_2O\).
II. The freezing point of \(D_2O\) is higher that that of \(H_2O\).
III. NaCl is more soluble in \(D_2O\) than in \(H_2O\).
IV. Ionic product of \(D_2O\) is smaller than that of \(H_2O\).
Select the correct answer using the codes given below.
- (a)
I and II
- (b)
I and III
- (c)
I and III
- (d)
II and IV
Mass percentage of deuterium in heavy water is
- (a)
same as that of protium in water
- (b)
11.1
- (c)
20.0
- (d)
cannot be predicted
When silicon is boiled with caustic soda solution, the gas evolved is
- (a)
\(O_2\)
- (b)
\(SiH_4\)
- (c)
\(H_2\)
- (d)
None of these
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