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.
Which of the following salts is insoluble in water?
Pb (NO3)2
Na 2CO3
AgNO3
AgCI
Correct answer is D
No explanation has been provided for this answer.
A solution that contains as much solute as it can dissolve at a given temperature is said to be
concentrated
saturated
supersaturated
unsaturated
Correct answer is B
No explanation has been provided for this answer.
Which of the following acids from normal salt only?
Tetraoxosulphate (IV) acid
Tetraoxophosphate (V) acid
Trioxonitrate (V) acid
Trioxosulphate (IV) acid
Correct answer is C
No explanation has been provided for this answer.