Entry Test MCQ :: Common Chemical Industries
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21. |
Which one of the following fertilizers provides the nitrogen and phosphorus to the plant? |
A. |
urea |
B. |
calcium superphosphate |
C. |
diammonium phosphate |
D. |
potassium nitrate |
Answer: Option C
Explanation:
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22. |
The potassium present in plant help the plant to |
A. |
form starch sugar and fibrous material |
B. |
ripen the seeds and fruits |
C. |
increase the resistance against disease |
D. |
all the above statements are correct |
Answer: Option D
Explanation:
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23. |
Cement is a mixture of |
A. |
clay and clinker |
B. |
clay lime stone and gypsum |
C. |
lime stone and gypsum |
D. |
lime stone and clay |
Answer: Option B
Explanation:
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24. |
What is clinker? |
A. |
roasted calcareous material |
B. |
roasted argillaceous material |
C. |
roasted calcareous and argillaceous material |
D. |
roasted gypsum |
Answer: Option C
Explanation:
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25. |
Cement is a mixture of so many compounds roasted in rotary kiln. Which substances has greater percentage? |
A. |
Lime (CaO) |
B. |
Silica (SiO2) |
C. |
Alumina (Al2O3) |
D. |
Magnesia (MgO) |
Answer: Option A
Explanation:
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26. |
Which one of the following raw material is not present in the cement? |
A. |
lime stone |
B. |
gypsum |
C. |
KNO3 |
D. |
iron oxide |
Answer: Option D
Explanation:
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27. |
Which sequence of steps is correct for the manufacture of cement? |
A. |
crushing heating mixing grinding |
B. |
crushing mixing heating grinding and mixing |
C. |
crushing grinding mixing heating |
D. |
mixing heating grinding crushing |
Answer: Option C
Explanation:
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28. |
The sequence of zones in the rotary kiln are as |
A. |
dry zone burning zone decomposition zone cooling zone |
B. |
cooling zone burning zone decomposition zone dry zone |
C. |
burning zone cooling zone decomposition zone |
D. |
dry zone decomposition zone burning zone cooling zone |
Answer: Option D
Explanation:
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29. |
The composition of mixture of clay and lime stone in the raw for cement material is |
A. |
75% lime stone and 25% clay |
B. |
25% lime stone and 75% clay |
C. |
15% lime stone and 55% clay |
D. |
55% lime stone and 15% clay |
Answer: Option A
Explanation:
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30. |
The important function of burning zone in the rotary kilm is |
A. |
to dry the moisture of slurry |
B. |
to decompose lime stone to unslaked lime |
C. |
combination of different oxides like CaO SiO2 Fe2O3 and Al2O3 |
D. |
to reduce the impurities |
Answer: Option C
Explanation:
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