Oil Refinery Placement paper

1. what will be effect of flooding in a column.     Answer:   level increase

2.  what is surging

3. CBD stands for continuous blow down

4.  IBD intermittent blow down

5.  COD chemical oxygen demand in waste water   Answer:  to check O2%

6.  Grean house gas is CO2

7.  what is PH of BFW : slightly basic

8.  polymerization is exothermic reaction

9.  why we do fast purging in boiler            to remove sludge

10.  utility point identification is to facilitate operator

11.  fork lifter require vehical entry permit

12.  in fractionation column sensitive tray temp is feed tray temp

13.  why we control DW conductivity

14.  viscosity is checked by orifice having caliberated dia

15.  how much moles in 6 gramcarbon

16.  in case of havy fire first inform in control room

17.  in case of sulfer smell use escape mask

18 what is difference between centrifugal and pd pumps

19.  polymers are solid and liquid at ambient temp

20.  what is MSDS

21.  which thing not match with the quality policy     maximum production

22.  what is latent heat

23.  poly ethylene process is fast or slow

24..  mandatory signs are of red colour

25.   saturated steam reduce the duty on reboiler

26.   scaffolding authorization is from safety

27.   what is cavitation

28.   in centrifugal pump flow is control by dischaege valve

29.   in PD compressor we can not throttle discharge valve

30.   sulfar gas is irritative and toxic

31.   SOME CHEMICAL EQUATIONS

        NAOH+H2S=

        CH4+02=

        S+02=

         NAOH+C02=

         2C2H6+702

Engro chemical Pakistan Limited placement paper

Engro chemical Pakistan Limited placement paper

1. 
   
2. Fill in the blanks

i. 2, 4, 7, 11, 16, -----, ------.

2. In the following give the number of pair which is different from the other.

i. Mathemetics and Algebra

ii. Petals and flower

iii. Pages and book

iv. Water and wind

3. In the following which choice gives answer

i. 5+3 = 28

ii. 9+1 = 810

iii. 2+1 = 13

iv. 5=4 19

v. Then 7+2 =---------

4. A man was cycling south wards at a speed of 10 miles / hr when he met another man who was cycling west wards at the speed of 11 miles / hr. How far apart they would be after a period of 01 hour.

i. 12 miles

ii. 21 miles

iii. 22 miles

iv. 16 miles

5. Which choices mention the two letters which will occur next in the following series in the correct manner?
• F,E,D,I,H,G,L,J,K

i. ON

ii. NM

iii. MN

iv. NO

6. Supply the missing figures.

i. if 3 + 5 = 5

ii. 4+24 = 6

iii. 5+40 = 8

iv. Then 2 + 8 = ---

1. 12

2. 6

3. 4

7. Complete the following series.
• ------, ------ 6, 10,9,15,12,20,15.
8. Which choice supplies the answer in the following?

i. 5 + 10 = 25

ii. 7 + 8 = 28

iii. 9 + 6 = 27

iv. 12 + 10 = 60

• Then 26 + 4 = ----------

i. 20

ii. 52

iii. 24

iv. 25

9. PKCDQRTJKRS stands for RESULT, what ABJKMNSTBC stands for------------.
10. B’s son is cousin of A’s son .if A has no sister what is B to A------------
11. Give the numbers of the pair which is dissimilar from the other in the following

i. River and Ship

ii. Bulb and light

iii. Watch and time

iv. Thermometer and temperature

12. Which choice supplies the answer in the following?

i. If BME = DOG

ii. MLC =

1. one

2. eye

3. two

4. three

13. Continue the following series.

i. 3/27, 5/24, 7/21, 9/18, 11/15, ------.

14. 7 meters is to 28 meters as 2 yards is to -----------.
15. If 7^th of month falls two after Wednesday, what day of the week will precede the 18^th of the month?

i. Monday

ii. Tuesday

iii. Wednesday

16. A man can build a wall 8 ft high in 8 hrs. How many feet high wall can one built in one hour.

i. 4 ft

ii. ¼ ft

iii. ½ ft

17. If a boy stands upside down with his face towards north, where will his right hand point? ----------------.
18. Re- arrange the following group of jumbled words to form sensible sentence and state the choice which mentions the letter of the correct sentence.
• All cats are cats but all animals are not animals.

i. Animals

ii. Cats

iii. All

19. I purchased a thing at Rs. 80. What will it give if I sell it at a profit of 25 %.
20. Fill in the blanks in the followings

i. Wxyz, xyzw, yzwx, zwxy, --------------.

21. Trace out the stranger from the following

i. Square

ii. Circle

iii. Rectangle

iv. Quadrilateral

22. Complete the series.

i. 3, 6, 12, 24, 48, 96, -------------.

GENERAL QUESTION

1. Why water wets glass while mercury does not.

2. You are standing at the top of building. How will you measure the height of building by dropping stone from it?

3. Why it is easier to roll a barrel, on road than to pull it.

4. Why does an object weight less at equator than at poles?

5. Why white roof keeps a house cooler as against black roof.

6. Why cloudy night are hotter than clear night.

7. Why does metal bench in feels in cooler in winter compared with a wooden bench and feels hotter in summer as compared with a wooden bench.

8. Why a thick glass or jug cracks when very hot water is poured into it.

9. Why we bring our hands closer to mouth while shouting to some body at distance.

10. Why grass looks black in blue lights.

11. What is meant by persistence of vision?

12. It’s a pitch dark night. You are standing near tall building .a rope is hanging from a top of building to the bottom, How will measure the height of the building.

13. Name the Pakistani scientist who won the noble prize.

14. Name at least three subject in which noble prize is given.

15. Russian equivalent of American Astronaut is -------------.

16. Independence of Pakistan according to Islamic calendar in --------------.

17. Name of UN secretary general is -------------.

18. Name the most populous country of the world------------------.

19. Who wrote the national anthem of Pakistan? ---------------.

20. If a velocity of body increasing the acceleration is

i. Positive

ii. Negative

iii. Zero

21. A ball throwing competition is going among children what angle of throwing you will suggest for them so that the ball can cover the maximum distance.

22. As we go below the surface of earth the value of ‘g’.

i. Increase

ii. Decrease

iii. Same

23. Work done is maximum when force is ----------- to displacement.

i. Equal

ii. Perpendicular

iii. Parallel.

24. The average kinetic energy of the molecules of the object is called its----

i. Heat

ii. Temperature

iii. Specific heat

25. Number of molecules in one kilo mole are.

i. 6.025x 10²⁶

ii. 2.73x 10²⁶

iii. None

26. The kinetic energy of molecules of an ideal gas at absolute zero will be

i. Very low

ii. Very high

iii. Zero

27. First law thermodynamics is restatement of the

i. Law of conservation of energy

ii. Law of conservation of momentum

iii. Law of conservation of mass

28. In an adiabatic expansion of gas

i. Heat is gained or lost

ii. Heat is neither gained nor lost

iii. Volume is kept constant

29. The electric field lines always start from a

i. Positive charge

ii. Negative charge

iii. Point charge

30. The phenomenon that the resistance of metal falls exactly to zero at a few degrees above absolute zero is called

i. Conductivity

ii. Super conductor

iii. Super resistivity

31. Which one following bulb has a least resistance

i. 100 watts

ii. 1000 watts

iii. 500 watts

32. On a hot day or in a hot climates white cloth are worn because they are

i. Absorber

ii. Reflector

iii. Emitter

33. Strength of an electro magnetic field can be increased

i. Increasing current supply

ii. Adding more coiled wire

iii. All

34. A bus and car is moving the same velocity if a same retarding force is applied on both of them which will first come to rest.

i. The car

ii. The bus

iii. Both

35. The number of protons or electrons present in an atom of an element is called.

i. Atomic weight

ii. Molecular weight

iii. Atomic number

iv. Mole

36. In a collection of 2.48 x 10²⁶ molecules of C₂H₅OH, what is the number of moles of carbon atoms?-------------.

37. 1 a.m.u = ------------------.

38. Low temperature can be produced by the ---------------of gases.

i. Compression

ii. Expansion

iii. Contraction

39. What we mean by standard temperature and pressure.

i. 0 C

ii. 0 K

iii. 25 C

iv. 700 mm

v. 76 cm

vi. 10 cm

40. During respiration we inhale air: in lungs oxygen is taken from air CO2 is given to air, why in lungs oxygen passes from fresh air to lungs.-------------

41. The temperature at which volume of gas theoretically become zero is called -------------temperature

42. 22.4 liters of CO₂ is --------------than 22.4 liters of SO₄.

i. Heavier

ii. Lighter

iii. Equal

43. The viscosity of liquid decreases with the -------------temperature.

44. Mercury does not stick to glass because of high --------------.

i. Density

ii. Viscosity

iii. Surface tension

45. The Le- Chatelier’s principle in case of exothermic reaction the formation of products is favored at --------------- temperature.

i. Lower

ii. Higher

iii. None

46. Calculate the molarity of solution containing : 3g of H₂SO₄ in 200 ml

i. Fe³⁺ + e^- ---------------à Fe²⁺

1. Above is the oxidation reaction or reduction reaction.

47. Why steam causes more sever burns than does the boiling water.

48. Calculate the pH & poH of a solution whose hydrogen ion concentration is 2.0 x 10² moles per liter

49. Slope of x-axis or of any line parallel to x-axis is --------

i. 0

ii. Base / 2

iii. Undefined

50. d / dx (lnx) =

i. X

ii. 1/x

iii. Lnx

51. Sum of the square on the two sides of a right angle triangle is equal to the square on the

i. Base

ii. Perpendicular

iii. Hypotenuse

iv. None

52. What are the roots of the quadratic equation 2y² – 6y + 3 = 0

i. 2 + √ 3 / 2, 2- √ 3/2

ii. 3 + √ 3 / 2, 3+ √ 3/2

iii. 2 ,-15

53. What is solution of equation?

11x + 15y + 23 = 0

7x – 2y – 20 = 0

i. 7,1 ii -2.3 iii 2,-3 2,3

54. (2a³ / b⁴ ) ⁴

i. 16a¹² / b¹⁶

ii. 16a¹¹ / b¹⁶

iii. 16a⁸² / b¹⁶