1 |
An element that has a high ionization energy and tends to be chemically inactive would most likely to be |
An alkali metal
A transition element
A noble gas
A halogen
|
2 |
Which halogen occurs naturally in a positive oxidation state. |
Fluorine
Chlorine
Bromine
Iodine
|
3 |
Bleaching powder may be produced by passing chlorine over. |
Calcium carbonate
Hydrated calcium sulphate
Anhydrous calcium sulphate
Calcium hydroxide
|
4 |
The anhydride of HCIO4 is |
CIO3
CIO2
Cl2O5
Cl2O7
|
5 |
Which halogen will react spontaneously with Au to produce Au3+ |
Br2
F2
I2
Cl2
|
6 |
Hydrogen bond is the strongest between the molecules of. |
HF
HCl
HBr
HI
|
7 |
Chlorine heptoxide reacts with water to form |
Hypochlorous acid
Chloric acid
Perchloric acid
Chlorine and oxygen
|
8 |
Which of the following hydrogen halide is the weakest acid in solution. |
HF
HBr
HI
HCl
|
9 |
Which statement is incorrect about H2SO4 |
Dehydration agent
dibasic acid
Oxidizing agent
Reducing agent
|
10 |
The reaction between Cu and conc. H2SO4 produces |
SO3
SO2
H2
Cu + ions
|
11 |
Most likely product formed when formic acid is dehydrated in the presence of conc. H2SO4 is. |
CO2 and H2O
CO, CO2 and H2O
CO2 and H2
CO and H2O
|
12 |
Arsenic impurities in contact process are removed. |
By prolong heating the gases
By treatment with Fe(OH)3
In scrubbing tower
In absorption tower
|
13 |
Which one of the following does not react with dilute sulphuric acid. |
Mg (OH)2
Mg
MgO
Mg(NO3)2
|
14 |
In pyrite burner, the gas produced is. |
SO3
SO2
CO2
NO
|
15 |
The composition of oleum is. |
H2SO4
H2S2O3
H2S2O7
H2S3O7
|
16 |
Sulphuric acid acts as dehydrating agent in its reaction with. |
Sodium chloride
Potassium nitrate
Copper
Ethyl alcohol
|
17 |
The reaction between concentrated H2SO4 and glucose give carbon and water. In this reaction H2SO4 acts as. |
An acid
An oxidising agent
Dehydrating agent
A reducing agent
|