chemical engineering Mcqs
751. Pick out the wrong statement ?
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A. The ratio of immediately available cash to the total current liabilities is known as the cash

B. io

C. ws the relationship among total income, costs & profit over the time interval

D. Consolidated income statement based on a given time period indicates surplus capital and

E. Gross revenue is that total amount of capital received as a result of the sale of goods or service

F. Net revenue is the total profit remaining after deducting all costs excluding taxes
752. A material being tested for endurance strength is subjected to the _______________ load ?
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A. Dynamic

B. Static & dynamic

C. Completely reversed

D. Impact

753. Construction expenses are roughly _____________ percent of the total direct cost of the plant ?
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A. 50

B. 30

C. 2

D. 10
754. Maximum heat dissipation occurs from a steel wire (k = 0.5 W/m. k) of 15 mm diameter exposed to air (h = 20W/m2 .k), when the insulation thickness is ________________ mm?
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A. 25

B. 30

C. 15

D. 10

755. ____________________ metal is used as a bearing liner material?
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A. Babbitt

B. Gun

C. White

D. Pewter

756. The main charge in blast furnace is usually___________________?
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A. Limestone, sand & iron ore

B. Iron ore & coke

C. Limestone, coke & iron ore

D. Iron ore, coke & air

757. A form of stress corrosion failure termed as season cracking is generally observed in __________________?
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A. Thermosetting polymers

B. Brasses

C. High carbon steels

D. Borosilicate glasses

758. Annual depreciation cost are not constant when, the _____________ method of depreciation calculation is used ?
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A. Sinking fund

B. Straight line

C. Present worth

D. Declining balance
759. In a furnace with heating element temperature at 1700C, the dominant mechanism of heat transfer will be__________________?
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A. Forced convection

B. Radiation

C. Conduction

D. Natural convection

760. Depreciation of machines fails under the indirect expenses head. As per income tax regulations, it is calculated by the __________________ method?
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A. Multiple straight line

B. Sum of the years digit

C. Sinking fund

D. Diminishing balance
761. Gross national product (GNP) means the total value of _______________ in a country ?
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A. Gold reserve

B. Earning of the citizens

C. Taxes paid

D. Goods produced
762. Triple point of water is__________________?
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A. -273C

B. 0K

C. 0.01 C

D. 492R

763. The laughing gas is__________________?
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A. Nitrogen trioxide

B. Nitric oxide

C. Nitrous oxide

D. Nitrogen pentoxide

764. The depreciation during the year n, in diminishing balance method of depreciation calculation, is calculated by multiplying a fixed percentage N to the ?
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A. Initial cost

B. Difference between initial cost and salvage value

C. Depreciation during the (n 1)th year

D. Book value at the end of (n 1)th year
765. ________________ of depreciation calculation does not take into account the interest on investments?
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A. All A, B. and C.

B. Sinking fund method

C. Sum of the years-digits method

D. Present worth method

766. An investment of Rs. 1000 is carrying an interest of 10% compounded quarterly. The value of the investment at the end of five years will be ________________?
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A. 1000 (1 + 0.1/4)5

B. 1000 (1 + 0.1)20

C. 1000 (1 + 0.1/2)5

D. 1000 (1 + 0.1/4)20
767. Calorific value of ____________________ are almost same?
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A. Coal gas & natural gas

B. Petrol & diesel

C. Lignite & coal gas

D. Lignite & anthracite coal

768. Which of the following can be manufactured using powder metallurgy techniques ?
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A. Bearings

B. Carbide tool tips

C. Brake linings

D. All A, B and C
769. The payback method for the measurement of return on investment___________________?
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A. Does not measure the discounted rate of return

B. Takes into account the cash inflows after the recovery of investments

C. Underemphasises liquidity

D. Gives a correct picture of profitability

770. Pick out the wrong conversion of absolute & kinematic viscosities ?
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A. 1 N.sec/m2 = 10 paise

B. 1 stoke = 1 cm2/sec

C. 1 m2/sec = 104 stokes

D. 1 stoke = 1 m2/sec
771. Liquor poisoning generally occurs due to the presence of _______________ in it?
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A. Ethyl alcohol

B. Carbonic acid

C. Methyl alcohol

D. Impurities

772. Phenol formaldehyde____________________?
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A. Employs addition polymerisation

B. Employs condensation polymerisation

C. Is an abrasive material

D. Is a monomer

773. Which of the following is an explosive ?
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A. All A , B., and C.

B. Nitro-glycerine

C. Trinitrotoluene (TNT)

D. Cellulose nitrate

774. Notched bar test is used for testing the _________________ of a material?
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A. Endurance limit

B. Impact strength

C. Corrosion resistance

D. Machinability

775. According to six-tenths-factor rule, if the cost of a given unit at one capacity is known, then the cost of similar unit with times the capacity of the first unit is approximately equal to _____________ times the cost of the initial unit?
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A. n0.4

B. n0.6

C. ?n

D. n

776. Baking soda is chemically represented by__________________?
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A. Na2CO3.10H2O

B. Na2CO3

C. NaHCO3

D. Na2CO3.H2O

777. In the acid Bessemer process, the hot metal should have the following composition ?
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A. S < 0.05% and P < 0.05%

B. S 1.5%

C. S > 1.5% and P < 0.05%

D. S < 0.05% and P < 1.5%

778. Maximum change in the hardness of martensite occurs in the carbon content range of _____________ percent in steel?
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A. 0.01 to 0.10

B. 0.2 to 0.4

C. 0.8 to 1.0

D. 0.5 to 0.7

779. Effluent treatment cost in a chemical plant is categorised as the __________________ cost?
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A. Fixed

B. Overhead

C. Capital

D. Utilities
780. A machine has an initial value of Rs. 5000, service life of 5 years and final salvage value of Rs. 1000. The annual depreciation cost by straight line method is Rs______________?
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A. 300

B. 800

C. 600

D. 1000

781. Fixed capital investment of a chemical plant is the total amount of money needed to supply the necessary plant and manufacturing facilities plus the working capital for operation of the facilities. Which of the following components of fixed capital investment requires minimum percentage of it ?
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A. Equipment installation cost

B. Cost for piping

C. Electrical installation cost

D. Equipment insulation cost
782. Holes for riveting purposes should be preferably made by________________?
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A. None of these

B. Drilling

C. Punching

D. Cutting torch

783. The compressive strength of cement should not be less than about 110Kg/cm2 after three days & not less than 170Kg/cm2 after seven days. The fineness of an ordinary cement as determined by turbidimetric method should be about ________________ cm2/gm?
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A. 4000

B. 1600

C. 8500

D. 800

784. P is the investment made on an equipment, S is its salvage value and n is the life of the equipment in years. The depreciation for Rath year by the sum-of year?s digit method will be____________________?
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A. 1 (P/S)1/m

B. [2 (n m + 1)/n(n + 1)]. (P S)

C. (P S)/n

D. (m/n) (P S)

785. Pick out the wrong statement?
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A. Brittle materials are generally tested in tension

B. Fatigue fracture of a material is always brittle in nature and takes place due to the existence of

C. sed by the formation and coalescence of voids in the necked region

D. Brittle fracture is caused by the propagation of pre-existing cracks in the material and involves minimum plastic deformation

E. Ductile fracture of a stressed material, which exhibits a large plastic deformation is commonly

F. e imperfections

786. Carboxymethyl cellulose (CMC) is added in detergents to_________________?
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A. Act as optical brightening agent

B. Prevent redeposition of soil on cleaned surface

C. None of these

D. Inhibit corrosion in washing machines made of aluminium

787. Pick out the wrong statement ?
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A. Crushing load or columns is less than the buckling load

B. Modulus of resilience is proportional to (stress at elastic limit)2

C. 2S

D. For a helical spring, deflection is proportional to D3 (D = mean coil diameter) or d4 (d = wire

E. The equivalent stiffness of two springs (of equal stiffness S) in series is S/2 while in parallel

F. meter)

788. Unbreakable crockeries are made from ______________ polymers?
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A. Polystyrene

B. Polyurethane

C. Polystyrene

D. Melamine

789. Depreciation________________?
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A. ermination

B. Is the unavoidable loss in the value of the plant, equipment and materials with lapse in time

C. All A, B. and C.

D. Costs (on annual basis) are constant when the straight line method is used for its

E. Does figure in the calculation of income tax liability on cash flows from an investment

790. Brazing filler metal used for joining steel plates_________________?
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A. Melts below 300C

B. Is copper phosphorous alloy

C. Is copper

D. Melts below the melting points of base metals
791. Dryness fraction of dry steam is_________________?
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A. 1

B. 0.5

C. ?

D. 0

792. If S is the amount available after n interest periods for an initial principal P with the discrete compound interest rate i, the present worth is given by__________________?
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A. S/(1 + i)n

B. (1 + i)n/S

C. S/(1 + in)

D. S/(1 + n)i

793. Latent heat of dry steam at atmospheric pressure is 539 Kcal/kg; which _____________ with increase in the pressure of steam?
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A. May increase or decrease

B. Decreases

C. Increases

D. Remain same

794. Optimum number of effects in a multiple effect evaporator is decided by the____________________?
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A. Cost benefit analysis

B. Terminal parameters

C. Floor area availability

D. Evaporation capacity required

795. Nominal and effective interest rates are equal, when the interest is compounded______________?
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A. Quarterly

B. Annually

C. In no case, they are equal

D. Semi-annually

796. Operating profit of a chemical plant is equal to___________________?
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A. Profit after tax plus depreciation

B. Profit after tax

C. Profit before interest and tax i.e., net profit + interest + tax

D. Net profit + tax

797. What is the range of tempering temperature (C) for most of the materials ?
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A. 75-100

B. 500-600

C. 200-300

D. 350-450

798. Which of the following methods of depreciation calculations results in book values greater than those obtained with straight line method ?
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A. Declining balance method

B. Sinking fund method

C. Multiple straight line method

D. Sum of the years digit method

799. Generally, income taxes are based on the____________________?
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A. Gross earning

B. Fixed cost

C. Total product cost

D. Total income

800. Phenolic antiseptics are added in the __________________ soap?
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A. Transparent

B. Shaving

C. Metallic

D. Medicated