Surface Chemistry - Online Test
Q1. Which among the following is adsorbed greatly by activated charcoal?
Answer : Option B
Explaination / Solution:
SO2 due to high polarity and surface area is adsorbed maximum.
Q2. Which among the following is an example of sorption?
Answer : Option B
Explaination / Solution:
When chalk is dipped in ink, absorption and adsorption both takes place.
Q3. The adsorbent used in decolouration of vinegar and sugar solution is
Answer : Option C
Explaination / Solution:
It adsorbs the colour in solutions.
Q4. Adsorbent used for drying of air and controlling humidity in rooms is
Answer : Option A
Explaination / Solution:
Aluminia gel adsorbs humidity in air.
Q5. The adsorbent used to adsorb the dye particles in the dying industry is
Answer : Option B
Explaination / Solution:
Alum is used in dying industries.
Q6. Ammonia is adsorbed on activated charcoal to a larger extent as compare to CO because
Answer : Option C
Explaination / Solution:
Ammonia is easily liquefiable because of h bonding interactions.
Q7. When 50 mL of 1M oxalic acid is mixed with 0.5 g of wood charcoal, the final concentration of the solution after adsorption is 0.5 M. The amount of the oxalic acid adsorbed per gram of charcoal is
Answer : Option A
Explaination / Solution:
Amount of oxalic acid adsorbed = (0.5x50)/1000 Mass of oxalic acid adsorbed per gram of charcoal = (0.0025x126)/0.5
Q8. Which among the following is an example of homogenous catalyst?
Answer : Option A
Explaination / Solution:
Homogeneous catalysis is one in which catalyst and reactants are both in same phase.
Q9. Which catalyst is used in Haber’s process?
Q10. Adsorption is a
Answer : Option A
Explaination / Solution:
Adsorption is entirely a bulk phenomenon while absorption is bulk phenomenon.
