12th class (Fsc) Chemistry unit 15 MCQs
chapter 15 MCQs 12th Class Chemistry
Common Chemical Industries in Pakistan:
1. Fertilizers are calssified according to the nature of elements into:
a. 4 classes
b. 2 classes
c. 5 classes
d. 3 classes
2. Which one of the following is the macro-nutrient for plants:
a. Calcium
b. Boron
c. Nitrogen
d. Nitrogen and calcium
3. Which of the following is required by the soil in large quantities?
a. Nitrogen
b. Hydrogen
c. Both N and H
d. None of above
4. Which one of the following is an organic fertilizers:
a. Manure
b. Amoniumnitrate
c. Urea
d. Both a and c
5. Which fertilizer is widely used in Pakistan:
a. DAP
b. Urea
c. K2SO4
d. KSO3
6. The nutrients which are required in very small amount for growth of plants are called:
a. Macronutrient
b. Nitrogenous fertilizers
c. Surfactants
d. Micronutrient
7. Which one of the following is not micrountrient:
a. Cu
b. Fe
c. Mn
d. H
8. Which elements often present in all fertilizers:
a. Phosphorus
b. Nitrigen
c. Potassium
d. Carbon
9. The nitrogenous fertilizers easily taken up by plants is:
a. Ammonia gas
b. Urea
c. Ammonia liquid
d. Ammonium nitrate
10. CO2 and liquid ammonia are mixed with for the preparation of;
a. Molten ammonia
b. Ammonium carbamate
c. Anhydrous ammonia
d. None of these
11. Ammonium nitrate is prepared by the:
a. Dehydration reaction
b. Acid base reaction
c. Hydration reaction
d. Neutralization reaction
12. Ammonium nitrate contains:
a. 33-37 % nitrogen
b. 33-35 % nitrogen
c. 33-3 % nitrogen
d. All of these
13. Ammonium nitrate is …… in nature:
a. Hygroscopic
b. Acidic
c. Neutral
d. Bask
14. Ammonium carbonate on dehydration given:
a. Ammonium bicarbonate
b. Nil.gas
c. Water
d. Urea
15. Pilling of fertilizer increases its:
a. Stability
b. Solubility
c. Absorption
d. Spreading power
16. Ammonium nitrate is manufactured by the neutralization reaction between ammonia and?
a. CH3COOH
b. HNO3
c. H2SO4
d. None of these
17. KNO3 fertilizer is prepared by double decomposition reaction between NaNO3 and
a. NaCI
b. KCL
c. AICI3
d. CaCI2
18. KNO3fertilizer has nitrogen:
a. 18%
b. 10%
c. 28%
d. 13%
19. The percentage of nitrogen in NH3 is:
a. 46%
b. 82%
c. None of these
d. 16%
20. Ammonia is prepared industrial by:
a. Birkland Eyde process
b. Contact process
c. Haber’s process
d. Ostwald’s process
21. Which of the following makes the soil acidic axcept?
a. Ca(NO3)2
b. NaNO3
c. NH4NO3
d. KNO3
22. Which one of the following is inorganic fertiler?
a. Urea
b. Ammonium nitrate
c. Manure
d. None of these
23. Acidity of the soil is, controlled by adding to the soil:
a. KOH
b. Lime
c. NaCI
d. NaOH
24. Which of the following fertilizer contains 75% plant nutrients:
a. DAP
b. Urea
c. NH4NO3
d. Super phosphate
25. Which one of the following fertilizers provides the nitrogen and phosphorous to plants:
a. Diammonium phosphate
b. Urea
c. Potassium nitrate
d. Calcium super phosphate