Which of the following is not correct about a catalyst? It
remains unchanged chemically at the end of a reaction
helps to establish equilibrium faster reversible reaction
can start a chemical rection which will normally not take place
is usually specific in its action
alters the rate of chemical reaction
Correct answer is C
No explanation has been provided for this answer.
Which of the following statements is not correct about electrolysis?
Reduction occurs at the anode
Anions migrate to the anode
Positive ions migrate to the cathode
Concentration affects the discharge of ions
Electrolytes conduct electric current
Correct answer is A
No explanation has been provided for this answer.
In which of the following compounds is the oxidation number of nitrogen equal to + 3?
NO 2
N 2O
NO
HNO2
HNO3
Correct answer is D
No explanation has been provided for this answer.
electrochemical cell
activity series
thermocouple
voltameter
galvanometer
Correct answer is A
No explanation has been provided for this answer.
Amphoteric oxides are oxides which
react with water to form acids
react with water to form alkali
show neither acid nor basic properties
react with acids alkalis
contain high proportion of oxygen
Correct answer is D
No explanation has been provided for this answer.