661 Phosphorus helps in the growth of_________________? Chemistry Medium Full question → A root B leave C stem D seed
662 What is clinker ? Chemistry Medium Full question → A roasted calcareous material B roasted argillaceous material C roasted calcareous and argillaceous material D roasted gypsum
663 The potassium present in plant help the plant to___________________? Chemistry Medium Full question → 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
664 Which one of the following is an inorganic fertilizer ? Chemistry Medium Full question → A manure B urea C ammonium nitrate D All
665 The nutrients which are required in very small amount for the normal growth of plants are called_________________? Chemistry Medium Full question → A nitrogenous fertilizers B micronutrients C phosphorus fertilizer D all of the above
666 Argillaceous material does not include________________? Chemistry Medium Full question → A vlay B marine shells C slate D blast furnace slag
667 Which of the following potassium fertilizers are more useful for horticultural crops tobacco & potatoes ? Chemistry Medium Full question → A KCI B KNO3 C K2SO4 D KMnO4
668 Which of the following fertilizers is not useful for paddy rice ? Chemistry Medium Full question → A urea B DAP C Ammonium sulphate D Ammonium nitrate
669 Which of the following is the most suitable catalyst for ammonia synthesis ? Chemistry Medium Full question → A Pt B ZnO + Cr2O3 C Fe in fused mixture of Al2O3 + SiQ2 + MgO D All of the above
671 Which of the following is incorrect statement about nitrogen importance ? Chemistry Medium Full question → 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
672 The important function of burning zone in the rotary kilm is __________________? Chemistry Medium Full question → 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
673 The composition of mixture of clay and lime stone in the raw for cement material is __________________? Chemistry Medium Full question → 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
674 Which sequence of steps is correct for the manufacture of cement ? Chemistry Medium Full question → A crushing heating mixing grinding B crushing mixing heating grinding and mixing C crushing grinding mixing heating D mixing heating grinding crushing
675 Cement is a mixture of so many compounds roasted in rotary kiln. Which substances has greater percentage ? Chemistry Medium Full question → A Lime (CaO) B Silica (SiO2) C Alumina (Al2O3) D Magnesia (MgO)
676 Cement is a mixture of________________? Chemistry Medium Full question → A clay and clinker B clay lime stone and gypsum C lime stone and gypsum D lime stone and clay
677 Which one of the following fertilizers provides the nitrogen and phosphorus to the plant ? Chemistry Medium Full question → A urea B calcium superphosphate C diammonium phosphate D potassium nitrate
678 The percentage of nitrogen in urea is________________? Chemistry Medium Full question → A 36% B 46% C 56% D 66%
679 Which one of the following set of raw material is most suitable for manufacture of urea ? Chemistry Medium Full question → A CH4 N2 and CO2 B H2 N2 and CO C H2 CO2 and H2O D H2O N2 and H2
680 How many zones through which the charge passes in a rotary kiln ? Chemistry Medium Full question → A 4 B 3 C 2 D 5