Which of the following is used as an oxidiser in rocket propellants?
Ammonium perchlorate
Alcohol
Acrylic rubber
Polyurethane
Which one of the following reactions will occur on heating AgNO3 above its melting point?
2AgNO3 → 2Ag + 2NO2 + O2
2AgNO3 → 2Ag + N2 + 3O2
2AgNO3 → 2AgNO2 + O2
2AgNO3 → 2Ag + 2NO + 2O2
In alkaline medium ClO2, oxidises H2O2 to O2 and itself gets reduced to Cl. How many moles of H2O2 are oxidized by 1 mole of ClO2?
1.0
1.5
2.5
3.5
The electron affinity values for the halogens show the following trend :
F < Cl > Br >I
F < Cl< Br< I
F > Cl > Br > I
F < Cl > Br < I
When H2S gas is passed through nitric acid, the product is:
prismatic S (colloidal)
amorphous S
monoclinic S
plastic S
Atoms in a P4 molecule of white phosphorus are arranged regularly in space in which of the following way ?
At the comers of tetrahedron
At the comers of a cube
At the comers of a four membered ring
At the centre and comers of a equivalent triangle
When F2 reacts with hot and concentrated alkali, then following will be obtained
(i) OF2
(ii) O2
(iii) H2O
(iv) NaF
(i), (iii) and (iv)
(ii) and (iii)
(ii), (iii) and (iv)
All of the above