Engineering :: All Aptitude Test ::

Hassan
1.The transverse reinforcements provided at right angles to the main reinforcement?
A. Distribute the load
B. Resist the temperature stresses
C. Resist the shrinkage stress
D. Distribute the load

2.In the zone of R.C.C. beam where shear stress is less than 5 kg/cm2, nominal reinforcement is provided at a pitch of_?
A. One -half lever arm of the section
B. One-third lever arm of the section
C. Lever arm of the section
D. One -half lever arm of the section

3.High strength concrete is used in pre-stressed member_?
A. To overcome high bearing stresses developed at the ends
B. To overcome bursting stresses at the ends
C. To provide high bond stresses
D. To overcome high bearing stresses developed at the ends

4.If the permissible compressive and tensile stresses in a singly reinforced beam are 50 kg/cm2 and 1400 kg/cm2 respectively and the modular ratio is 18, the percentage area At of the steel required for an economic section, is_?
A. 0.50%
B. 0.60%
C. 0.70%
D. 0.50%

5.Raw materials for nitric acid manufacture are____?
A. Hydrogen peroxide, air and water
B. Anhydrous ammonia and air
C. Anhydrous ammonia, air and water
D. Hydrogen peroxide, air and water

6.Plant tranquillisers____?
A. Hold back stem growth and halt plants at a desired height
B. Cause early maturation of plants
C. Accelerate ripening of food and grain
D. Hold back stem growth and halt plants at a desired height

7.Nitrogen content of a nitrogenous fertiliser is 35%. It could be?
A. Urea
B. Ammonium nitrate
C. Calcium ammonium nitrate (CAN)
D. Urea

8.Nitrogen content of urea is about _______ percent ?
A. 10
B. 46
C. 80
D. 10

9.With increases in pressure, the conversion of Ammonium carbamate into urea?
A. Increases
B. Decreases
C. Remains unaltered
D. Increases

10.Nitric acid is produced on commercial scale in a fertiliser plant by?
A. Oxidation of ammonia
B. CaNO3 + H2SO4 reaction
C. Passing air through high voltage electric arc
D. Oxidation of ammonia

11.In ammonia synthesis (N2 + 3H2 = 2NH3), there is a decrease in total volume, hence to get high equilibrium conversion, the reaction should be carried out at?
A. Low pressure
B. High pressure
C. Very high temperature
D. Low pressure

12.Reaction of anhydrous liquid ammonia with ortho-phosphoric acid produces?
A. Ammonium phosphate
B. Superphosphate
C. Triple superphosphate
D. Ammonium phosphate

13.H4P2O7 is the chemical formula of ______ phosphoric acid?
A. Pyro
B. Ortho
C. Meta
D. Pyro

14.Catalytic ammonia synthesis reaction as in Haber’s process is___?
A. Endothermic
B. Exothermic
C. Irreversible
D. Endothermic

15.Which one of the following is used as a nitrogenous fertiliser, as a weed killer in the onion fields and for correcting acidic soils ?
A. Urea
B. CAN
C. Ammonium sulphate
D. Urea

16.The most suitable fertiliser for accelerating seeding or fruit formation in later stages of plant growth is ____ fertiliser?
A. Nitrogenous
B. Phosphatic
C. Potassic
D. Nitrogenous

17.Triple superphosphate is made by reacting phosphate rock with _____ acid?
A. Phosphoric
B. Nitric
C. Sulphuric
D. Phosphoric

18._ catalyst is used in the production of urea from CO2 and NH3??
A. Vanadium pentoxide
B. No
C. Alumina
D. Vanadium pentoxide

19.Ammonium nitrate is______?
A. Having about 40% N2
B. Not hygroscopic
C. Not prone to explosive thermal decomposition
D. Having about 40% N2

20.Tricresyl phosphate is chemically represented as___?
A. (CH3 C6 H4)3 PO4
B. Ca10(PO4)3F6
C. (NH4)2HPO4
D. (CH3 C6 H4)3 PO4

21.Nitrolime is_?
A. Calcium nitrate
B. Calcium ammonium nitrate
C. A mixture of nitric acid and lime
D. Calcium nitrate

22.Multistage operation (as in the case of catalytic oxidation of SO2) is not carried out for NH3 synthesis, because of__?
A. Comparatively higher pressure drop
B. High cost of the high pressure vessel used for the reactor
C. Higher pumping cost
D. Comparatively higher pressure drop

23.Steam reforming of naphtha produces ammonia synthesis gas. This is a/an ____ process?
A. Autocatalytic
B. Endothermic
C. Exothermic
D. Autocatalytic

24.Catalyst used in steam reforming of naphtha is_?
A. Nickel
B. Platinum
C. Silica gel
D. Nickel

25.Color of nitric acid is light yellow due to the presence of?
A. NO
B. NO2
C. N2H5
D. NO

26.Which of the following is not a commercially used feed-stock for the production of ammonia synthesis gas ?
A. Water
B. Naphtha
C. Tar
D. Water

27.Conditioners like finely divided peat are added to the fertiliser to_?
A. Counteract burning
B. Avoid caking & hardening
C. Produce bulk
D. Counteract burning

28.Urea is a better fertilizer than ammonium sulphate, because?
A. It is cheaper
B. Nitrogen content is higher
C. It is not poisonous
D. It is cheaper

29.Electric furnace method for production of phosphorous uses phosphate rock and ?
A. Phosphoric acid
B. Coke
C. Sulphuric acid
D. Phosphoric acid

30.An increase in the NH3/CO2 ratio in urea manufacture results in?
A. Increased degree of conversion of CO2 to urea
B. Decreased degree of conversion of NH3 to urea
C. Decreased yield of urea
D. Increased degree of conversion of CO2 to urea


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