Which of the following gases can be used for storage? (a) Carbon dioxide or Oxygen(b) Nitrogen or Oxygen(c) Carbon dioxide or Helium(d) Helium or Nitrogen Answer: (d) Helium or Nitrogen can be used for storage. More Questions on Chemical Reactions and Equations Magnesium ribbon is rubbed before burning because it has a coating of Which …
Pb + CuCl2 → PbCl2 + Cu – The above reaction is an example of (a) combination(b) double displacement(c) decomposition(d) displacement Answer: (d) Pb + CuCl2 → PbCl2 + Cu reaction is an example of displacement. More Questions on Chemical Reactions and Equations Magnesium ribbon is rubbed before burning because it has a coating of Which of the following …
Name the products formed when iron filings are heated with dilute hydrochloric acid (a) Fe (III) chloride and water(b) Fe (II) chloride and water(c) Fe (II) chloride and hydrogen gas(d) Fe (III) chloride and hydrogen gas Answer: (d) Fe (III) chloride and hydrogen gas are formed when iron filings are heated with dilute hydrochloric acid. …
When S02 gas is passed through saturated solution of H2S, which of the following reaction occurs? (a) SO2 + 2H2S → 2H20 + 3S(b) SO2 + 2H2S → H20 + 3S(c)SO2 + H2S → H2O + S(d) SO2 + H2O → SO3 + H2 Answer: (a) When S02 gas is passed through a saturated solution of H2S, SO2 + 2H2S → …
Electrolysis of water is a decomposition reaction. The mole ratio of hydrogen and oxygen gases liberated during electrolysis of water is (a) 1:1(b) 2:1(c) 4:1(d) 1:2 Answer: (b) Electrolysis of water is a decomposition reaction. The mole ratio of hydrogen and oxygen gases liberated during electrolysis of water is 2:1. More Questions on Chemical Reactions …
The condition produced by aerial oxidation of fats and oils in foods marked by unpleasant smell and taste is called (a) antioxidation(b) reduction(c) rancidity(d) corrosion Answer: (c) The condition produced by aerial oxidation of fats and oils in foods marked by unpleasant smell and taste is called rancidity. More Questions on Chemical Reactions and Equations …
A substance added to food containing fats and oils is called (a) Oxidant(b) Rancid(c) Coolant(d) Antioxidant Answer: (d) A substance added to food containing fats and oils is called an Antioxidant. More Questions on Chemical Reactions and Equations Magnesium ribbon is rubbed before burning because it has a coating of Which of the following statements …
Select the oxidising agent for the following reaction: H2S + I2 > 2HI + S (a) I2(b) H2S(C) HI(d) S Answer: (a) I2 is the oxidising agent for the reaction H2S + I2 > 2HI + S. More Questions on Chemical Reactions and Equations Magnesium ribbon is rubbed before burning because it has a coating of Which …
What type of chemical reactions take place when electricity is passed through water? (a) Displacement(b) Combination(c) Decomposition(d) Double displacement Answer: Decomposition take place when electricity is passed through water. More Questions on Chemical Reactions and Equations Magnesium ribbon is rubbed before burning because it has a coating of Which of the following statements about the …
Which of the following is an endothermic process? (a) Dilution of sulphuric acid(b) Sublimation of dry ice(c) Condensation of water vapours(d) Respiration in human beings Answer: (b) Sublimation of dry ice is an endothermic process. More Questions on Chemical Reactions and Equations Magnesium ribbon is rubbed before burning because it has a coating of Which …