1. The name catalysis was given by____
(a) Rutherford
(b) Langmuir
(c) Grahm
(d) Berzelius
2. Substance which alter the velocity of reaction themselves remaining chemically and quantitatively unchanged after reaction are known as____
(a) Indicators
(b) Catalysts
(c) Adsorbates
(d) Surfactants
3. The substance which decreases the rate of a chemical reaction is called___
(a) Inhibitor
(b) Poison
(c) Moderator
(d) Promotor
4. The temperature at which the catalytic activity of the catalyst is maximum, is called___
(a) Critical temperature
(b) Room temperature
(c) Absobute temperature
(d) Optimum temperature
5. Enzymes are_____
(a) Carbohydrates
(b) Acids
(c) Protein
(d) None
6. Alcoholic fermentation is brought about the action of____
(a) Yeast
(b) CO_2
(c) O_2
(d) CO
7. Glucose or fructose is converted into C_2 H_5OH in the presence of____
(a) Invertase
(b) Diastase
(c) Maltase
(d) Zymase
8. In the Haber’s process of synthesis of NH_3____
(a) Mo acts as a catalyst and Fe as a promotor
(b) Fe acts as a catalyst and Mo as a promotor
(c) Fe acts as inhibitor and Mo as a catalyst
(d) Fe acts as promotor and Mo as auto catalyst
9. TEL minimize the knocking effect when mixed with petrol, it acts as____
(a) Positive catalyst
(b) Negative catalyst
(c) Auto catalyst
(d) Induced catalyst
10. The catalyst used in the manufacture of sulphuric acid by contact process is____
(a) Al_2 O_3
(b) Cr_2 O_3
(c) V_2 O_5
(d) MnO_2
Answers:
Sol 1. D
Sol 2. B
Sol 3. B
Sol 4. D
Sol 5. C
Sol 6. A
Sol 7. D
Sol 8. B
Sol 9.B
Sol 10. C
