1 |
Which raw material is used for manufacture eof HNO3 by Birkland eyed process |
NH3 and CO2
Air
Air and gypsum
Lime stone and urea
|
2 |
Which of the following acids possess oxidizing and reducing properties. |
HCl
HNO2
HNO3
H2SO4
|
3 |
When Cu reacts with conc. HNO3 , which one of the following gases is evolved |
N2O
NO
NO2
N2O5
|
4 |
NH4NO3 on heating at 200 oC changes to |
N2O
NO
NO2
N2O4
|
5 |
NO2 can be obtained by heating. |
NaNO3
KNO3
Pb(NO3)2
NH3NO3
|
6 |
Which one of the following oxide is brown in colour. |
NO
NO2
N2O
N2O3
|
7 |
Which element does not have allotropic form |
Nitrogen
Phosphorous
Arsenic
Antimony
|
8 |
Lowest oxidation state of nitrogen is present in. |
NH3
NO2
NO
HNO3
|
9 |
Which of the following specie has the maximum number of unpaired electrons. |
O2
O2+
O2-
O2<sup>-2</sup>
|
10 |
Which catalyst is used in contact process. |
Fe2O3
V2O5
SO3
Ag2O
|
11 |
SO2 is not absorbed in water directly to form H2SO4 because. |
The reaction does not go to completion
The reaction is quite slow
The reaction is exothermic
SO3 is insoluble in water
|
12 |
Out of the elements of group VIA the highest melting and boiling points is shown by the element. |
Te
Se
S
Po
|
13 |
The brown gas formed when metal reduces HNO3 is |
N2O5
N2O3
NO2
NO
|
14 |
In group VA elements the most electronegative elements is. |
Sb
N
P
As
|
15 |
Out of the elements of group VA, the highest energy is possessed by |
N
P
Sb
Bi
|
16 |
Which substances is called chrome yellow. |
Pb3O4
PbO
2PbCO3.Pb(OH)2
PbCrO4
|
17 |
Lead monoxide is |
Amphoteric
Neutral
Acidid
Basic
|