Which of the following is used in the manufacture of bleaching powder?
Sulphur dioxide
Chlorine
Hydrogen tetraoxosulphate (VI)
Hydrogen sulphide
Nitrogen dioxide
Correct answer is B
No explanation has been provided for this answer.
Complete hydrogenation of ethyne yields?
benzene
methane
ethane
ethene
propane
Correct answer is C
No explanation has been provided for this answer.
Adding argon to the system
Lowering the temperature
Adding hydrogen to the system
Decreasing the pressure
Increasing the temperature
Correct answer is A
No explanation has been provided for this answer.
Which of the following metals will displace iron from a solution of iron(ll)tetraoxosulphate(lV)?
Copper
Mercury
Silver
Zinc
Gold
Correct answer is D
No explanation has been provided for this answer.
2MnO-4 + 10Cl- + 16H+ → 2Mn2+ + 5Cl2 + 8H2O. Which of the substances serves as an oxidizing agent?
Mn2+
Cl-
H2O
MnO-4
Cl2
Correct answer is D
No explanation has been provided for this answer.