Related InterviewSolutions

• iodine rects with connentrated `HNO_(3)` to yield Y along with other products , the oxidation state of iodine in Y , is :A. 7B. 3C. 1D. 5
• Bleaching action of `SO_(2)` is due to :A. its reducing natureB. its oxidising natureC. its acidic natureD. its both oxidising as well as reducing nature
• Bleaching of a fabric cloth is done using A and excess of chlorine is removed using B.A and B are :A. `CaOCl_(2), Na_(2)SO_(3)`B. `Na_(2)S_(2)O_(3), CaOCl_(2)`C. `CaCl_(2), Na_(2)S_(2)O_(3)`D. `CaOCl_(2), Na_(2) S_(2)O_(3)`
• Platinum metal (Pt) dissolves in aqua-regia but not in concentrated HCl ot `HNO_(3)` becauseA. HCl oxidises Pt in the presence of `HNO_(3)`B. `HNO_(3)` reacts with HCl to form chlorine which attacks PtC. `HNO_(3)` oxidises Pt which is followed by formation of a chloro complexD. HCl and `HNO_(3)` together give `O_(2)` that oxidises Pt
• Why concentrated `H_(2)SO_(4)` can not be used for drying `H_(2)S`?
• `PH_(3) ("anhydrous") + HBr ("anhydrous") rarr X`. Identify X ?A. `H_(3)BrO_(3)`B. `PH_(4)Br`C. `Br_(2)`D. `P_(4)`
• Anhydrous `CaCl_(2),P_(4)O_(10)` or concentrated `H_(2)SO_(4)` can not be used as drying agent for ammonia.Why ?
• A gas is pale blue in colour on liquifaction, the colour arises from electronic transitions. This transition is forbidden in gaseous state. The gas does not burn but is a strong supported of combustion. Given the molar mass of this gas.
• Hydrogen peroxide oxidises `[Fe(CN)_(6)]^(4-)` to `[Fe(CN)_(6)]^(3-)` in acidic medium but reduces `[Fe(CN)_(6)]^(3-)` to `[Fe(CN)_(6)]^(4-)` in alkaline medium. The other products formed are, respectivelyA. `H_(2)O and (H_(2)O + O_(2))`B. `H_(2)O and (H_(2)O + OH^(-))`C. `(H_(2)O + O_(2)) and H_(2)O`D. `(H_(2) O + O_(2)) and (H_(2)O + OH^(-))`
• A gaseous substance dissolve in water giving a pale blue solution which decolouises `KMnO_(4)` and oxidises `Kl` to `l_(2)` in acidic medium :A. `N_(2)O_(5)`B. `NH_(3)`C. `N_(2)O_(3)`D. `HNO_(3)`