Description : What is the net ionic equation for ammonium perchlorate and potassium hydroxide?
Last Answer : The chemical reaction is:NH4ClO4 + KOH ↔ KClO4 + NH4OH
Description : "Bhopal gas tragedy" 1984 is related to – (1) Aluminium Phosphide (2) Methyl bromide (3) Methyl isocyanate (4) Carbon dioxide
Last Answer : (3) Methyl isocyanate Explanation: In the Bhopal disaster which took place on 2-3 December, 1984 over 500,000 people were exposed to methyl isocyanate gas and other chemicals. The toxic substance made its way in and around the shantytowns located near the plant.
Description : Poison used for killing rats is – (1) Calcium phosphide (Ca3P2) (2) Zinc phosphide (Zn3P2) (3) Magnesium nitride (Mg3N2) (4) Magnesium phosphide (Mg3P2)
Last Answer : (2) Zinc phosphide (Zn3P2) Explanation: Zinc phosphide is an inorganic compound that is used in pesticide products as a rodenticide. Formulated as attractive bait, it releases phosphine gas once it is exposed to acid and moisture in the stomach. The phosphine gas is very toxic to all animals.
Description : Brass gets discoloured in air due to constant exposure in presence of: (1) Aluminium phosphide (2) Hydrogen sulphide (3) Hydrogenated wafers (4) Aluminium sulphide
Last Answer : (2) Hydrogen sulphide Explanation: Brass gets discoloured in air because of Hydrogen sulphide. Transition elements are coloured. The brass is combination of Zn and Cu. But it is discoloured due to hydrogen sulphide in air.
Description : The chemical name of rat poison is - (1) zinc oxide (2) potassium cyanide (3) lead nitrate (4) zinc phosphide
Last Answer : (4) zinc phosphide Explanation: Zinc phosphide is used as a rodenticide. A mixture of food and zinc phosphide is left where the rodents can eat it. The acid in the digestive system of the rodent reacts with the phosphide to generate the toxic phosphine gas.
Description : It is the made from semiconductor material such as aluminum-galium-arsenide or gallium-arsenide-phosphide. A. APD B. Injection laser diode C. Light emitting diode D. Positive-intrinsic-negative
Last Answer : C. Light emitting diode
Description : What is the oxidation number of Bismuth in the compound Bismuth Phosphide?
Last Answer : ANSWER: + 3 (accept 3)
Description : “Bhopal gas tragedy” 1984 is related to (1) Aluminium Phosphide (2) Methyl bromide (3) Methyl isocyanate (4) Carbon dioxide
Last Answer : Methyl isocyanate
Last Answer : Hydrogen sulphide
Description : The chemical name of rat poison is (1) zinc oxide (2) potassium cyanide (3) lead nitrate (4) zinc phosphide
Last Answer : zinc phosphide