Chemistry - Chemistry Of Non-Metals - II
Exam Duration: 45 Mins Total Questions : 30
Correct order of decreasing bp of hydrides of Group VI (Group 16 according to IUPAC) is
- (a)
H2Te, H2Se, H2S, H2O
- (b)
H2O , H2Te, H2Se, H2S
- (c)
H2O , H2Se, H2Te, H2S
- (d)
H2Se , H2S , H2Te , H2O
Correct order of the sizes of iodine species I, I- and I+ is
- (a)
I- > I > I+
- (b)
I > I- > I+
- (c)
I > I+ > I-
- (d)
I+ > I > I-
Which of the following halogen is used as a strong bleaching agent and disinfectant?
- (a)
F2
- (b)
Cl2
- (c)
Br2
- (d)
I2
silicon is an important constituent of
- (a)
rocks
- (b)
alloys
- (c)
animal
- (d)
vegetables
In P4O10 the number of oxygen atoms bonded to each phosphorus atom is
- (a)
2.5
- (b)
3
- (c)
4
- (d)
5
SO2 is not a
- (a)
basic oxide
- (b)
reducing agent
- (c)
bleaching agent
- (d)
disinfectant
White phosphorus reacts with caustic soda. The products are PH3 and NaH2.PO2. In this reaction phosphorus undergoes
- (a)
oxidation
- (b)
reduction
- (c)
disproportionation
- (d)
neutralisation
Which one of the following has lowest bioling point?
- (a)
water
- (b)
H2S
- (c)
H2Se
- (d)
H2Te
Which is the strongest oxidising agent?
- (a)
HOCl
- (b)
HClO2
- (c)
HClO3
- (d)
HClO4
Which of the following has the greatest tendency to form cations?
- (a)
Cl
- (b)
Br
- (c)
I
- (d)
O
Chlorine does not oxidise
- (a)
FeCl2
- (b)
I
- (c)
Br
- (d)
F
Which one of the following has largest atomic size?
- (a)
Neon
- (b)
Krypton
- (c)
Xenon
- (d)
Argon
Which one of the following is radioactive?
- (a)
Neon
- (b)
Krypton
- (c)
Xenon
- (d)
Radon
The nobel gas with automic number 54 is
- (a)
Neon
- (b)
Argon
- (c)
Xenon
- (d)
Krypton
Which one of the following the molecules is linear?
- (a)
NO2
- (b)
ClO2
- (c)
CO2
- (d)
H2S
Phosphorus in its compounds shows variable valency ranging from
- (a)
-3 to -15
- (b)
-3 to +3
- (c)
0 to +5
- (d)
+3 to +5
Strongest acid form the following is
- (a)
HF
- (b)
H3P
- (c)
HBr
- (d)
H2S
The most powerful oxidising agent from the following is
- (a)
H3BO3
- (b)
HPO3
- (c)
H3PO4
- (d)
H2SO4
Cl2 is an anhydride of
- (a)
HClO4
- (b)
HOCl
- (c)
HClO2
- (d)
ClO3
Which one of the following statement is false?
- (a)
Boric acid is obtained by treating diboranr with water
- (b)
Boric acid is obtained by treatingboric oxide with water
- (c)
Barosilicate is obtaind from boric acid
- (d)
Pyrex glass is made of barosilicate glass
Phosphide ion has the electronic structure similar to that of
- (a)
nitride ion
- (b)
fluoride ion
- (c)
sodium ion
- (d)
chloride ion
The color of the blue glass is due to the prersence of
- (a)
Cr
- (b)
Co
- (c)
Ni
- (d)
Fe
The main product of the reaction of propane with chlorine at 25oC in the presence of sunlight is
- (a)
1-chloropropane
- (b)
2-chloropropane
- (c)
chloroethane
- (d)
chloromethane
The alkyl halide that undergoes SN1 reaction more readily is
- (a)
ethyl bromide
- (b)
iso-propyl bromide
- (c)
vinyl bromide
- (d)
t-butyl bromide
Which of the following is boiled with ethyl chloride for the preparation of ethyl alcohol?
- (a)
(AIc) KOH
- (b)
(Aq) KOH
- (c)
H2O
- (d)
H2O2
The reaction of C6H5CH2Br with aqueous sodium hydroxide follows
- (a)
SN1 mechanism
- (b)
SN2 mechanism
- (c)
any of the above depending upon the temperature of reaction
- (d)
Saytzeff's rule
The following reaction is used in the Darzen's process for the preparation of alkyl chloride
- (a)
alcohol with nitrosyl chloride
- (b)
alcohol with thionyl chloride in the presence of pyridine
- (c)
alcohol with HCI in the presence of anhy. ZnCI2
- (d)
None of the above
HBr reacts with \({ CH }_{ 2 }=CH-{ OCH }_{ 3 }\) under anhydrous conditions at room temperature of given
- (a)
\({ CH }_{ 3 }CHO\quad and\quad { CH }_{ 3 }Br\)
- (b)
\({ BrCH }_{ 2 }CHO\quad and\quad { CH }_{ 3 }OH\)
- (c)
\({ BrCH }_{ 2 }-{ CH }_{ 2 }-{ OCH }_{ 3 }\)
- (d)
\({ H }_{ 3 }C-CHBr-{ OCH }_{ 3 }\)