Which of the following is incorrect statement about nitrogen importance ?

A. It enhances plant growth
B. It is involved in the synthesis of protein and nucleic acids
C. It accelerates fruits and flowers growth
D. It is involved in the chlorophyll synthesis

Which of the following is macronutrient ?

A. Cu
B. Cl
C. H
D. Zn

Which of the following is the most suitable catalyst for ammonia synthesis ?

A. Pt
B. Zno + cr2o3
C. Fe in fused mixture of al2o3 + siq2 + mgo
D. All of the above

Which of the following fertilizers is not useful for paddy rice ?

A. Urea
B. Dap
C. Ammonium sulphate
D. Ammonium nitrate

DAP (Diammonium hydrogen phosphate) contains ______________ plant nutrients?

A. 60%
B. 65%
C. 70%
D. 75%

Calcarious material includes_________________?

A. Lime stone
B. Marble
C. Chalk
D. All of the above

Which of the following processes is used for the synthesis of cement ?

A. Dry process
B. Wet process
C. Both
D. None

How many zones through which the charge passes in a rotary kiln ?

A. 4
B. 3
C. 2
D. 5

Which one of the following set of raw material is most suitable for manufacture of urea ?

A. Ch4 n2 and co2
B. H2 n2 and co
C. H2 co2 and h2o
D. H2o n2 and h2

The percentage of nitrogen in urea is________________?

A. 36%
B. 46%
C. 56%
D. 66%