a catalyst
an oxidizing agent
a reducing agent
a sulphonating agent
Correct answer is B
No explanation has been provided for this answer.
Which of the following substances is the anode in the dry Leclanche cell ?
Carbon rod
Muslin bag
The seal
Zinc container
Correct answer is D
In a Leclanche cell, the anode is a zinc rod / container and the cathode is a carbon rod with ammonium chloride solution / paste as the electrolyte.
l and ll only
ll, lll and IV only
l, ll and lll only
l, ll, lll and IV
Correct answer is B
No explanation has been provided for this answer.
A catalyst increases the rate of chemical reaction by
decreasing the temperature of the reaction
decreasing the activation energy of the reaction
increasing the surface area of the reactants
decreasing the surface area of the products
Correct answer is B
No explanation has been provided for this answer.
Which of the following statement is correct? The solubility of
gases increases with increase in temperature
gases decreases with increase in temperature
most solid solutes decreases with indease in temperature
most solid solutes is constant
Correct answer is B
No explanation has been provided for this answer.