chemical engineering Mcqs
851. Hot & cold working of material causes its _______________ deformation?
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A. Plastic

B. Isotropic

C. Elastic

D. Visco-elastic

852. In financial accounting of a chemical plant, which of the following relationship is invalid ?
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A. Assets = capital

B. Assets = liabilities + net worth

C. Assets = equities

D. Total income = costs + profits

853. Reynolds number of a fluid flowing in a circular pipe is 10,000. What will be the Reynolds number when the fluid velocity is decreased by 30% & the pipe diameter is increased by 30% ?
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A. 9,100

B. 7,000

C. 2,550

D. 13,000

854. The ______________ of a chemical company can be obtained directly from the balance sheet as the difference between current assets and current liabilities ?
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A. Liquids assets

B. Current ratio

C. Net working capital

D. Cash ratio

855. Presence of carbonaceous matter in the sewage____________________?
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A. All A, B. and C.

B. Causes reduction in its dissolved oxygen content thereby endangering the life of aquatic

C. atures

D. Reduces sulphate ions to sulphides causing obnoxious smell

E. Increases the quantity of chlorine used for its purification

856. Production of one ton of cement requires about _______________ tons of limestone ?
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A. 0.6

B. 1.2

C. 3.8

D. 2.2

857. Out of the following, the depreciation calculated by the _____________ method is the maximum?
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A. Diminishing balance

B. Straight line

C. Sinking fund

D. Sum of the years digit

858. The amount of simple interest during n interest period is (where, i = interest rate based on the length of one interest period, p = principal) ?
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A. p(1 + i)n

B. p.i.n.

C. p(1 + i.n)

D. p(1 i.n)

859. The property of material, by which a given amount of energy is absorbed by it without plastic deformation, is called the________________________?
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A. Ductility

B. Impact strength

C. Resilience

D. Toughness

860. Depreciation is ____________________ in profit with time?
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A. Increase

B. None of these

C. Decrease

D. No change

861. Ganister contains maximum percentage of_________________?
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A. MnO2

B. MgO

C. SiO2

D. FeO

862. ______________ is not used as the control rod material in a nuclear reactor ?
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A. Cobalt

B. Hafnium

C. Boron

D. Cadmium

863. In a chemical process plant, the total product cost comprises of manufacturing cost and the__________________?
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A. General expenses

B. Overhead cost

C. None of these

D. R & D cost

864. Production of a hollow product by inflation of a tube or parison is called the _______________ process?
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A. Blow moulding

B. Injection

C. Extrusion

D. Calendaring

865. In a manufacturing industry, breakeven point occurs, when the___________________?
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A. Total annual rate of production equals the assigned value

B. Annual sales equals the fixed cost

C. Total annual product cost equals the total annual sales

D. Annual profit equals the expected value

866. The most abundant metal present in the earths crust is__________________?
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A. Titanium

B. Copper

C. Aluminium

D. Iron

867. Yellow phosphorus is transported under____________________?
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A. Air

B. Helium

C. Water

D. Nitrogen

868. Specific _________________ is a dimensionless quantity ?
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A. Humidity

B. Weight

C. None of these

D. Heat

869. Silicon percentage in acid resistant cast iron is about ___________________?
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A. 8

B. 4

C. 20

D. 14

870. Cold heading or upsetting is categorised as the ________________ process ?
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A. Forging

B. Extrusion

C. Rolling

D. Bending

871. In an ordinary chemical plant, electrical installation cost may be about ____________________?
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A. Neither A. nor B.

B. 3-10% of fixed capital investment

C. 10-15% of purchased equipment cost

D. Either A. or B.
872. A shareholder has ______________ say in the affairs of company management compared to a debenture holder ?
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A. More

B. Same

C. No

D. Less

873. A balance sheet for an industrial concern shows ___________________?
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A. The financial condition at any given time

B. Only current assets

C. Only current and fixed assets

D. Only fixed assets

874. In ________________ process, there is an increase in entropy with no degradation of energy ?
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A. Isochoric heat addition

B. Isothermal expansion

C. Polytropic expansion

D. Isobaric heat addition

875. Melting point & boiling points of liquid oxygen are respectively 218.8C & 183C, while the same for liquid nitrogen is 210C & 195.8C respectively. The difference in melting points of liquid oxygen & liquid nitrogen is not equal to 8.8 ?
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A. F

B. K

C. C

D. R

876. The total capital investment for a chemical process plant comprises of the fixed capital investment and the_________________?
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A. Working capital

B. Direct production cost

C. Indirect production cost

D. Overhead cost

877. An annuity is a series of equal payments occuring at equal time intervals, and this amount includes the sum of all payments plus interest, if allowed to accumulate at a definite rate of interest from the time of initial payment to the end of annuity term. Ordinary annuity is used in the calculation of the__________________?
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A. Manufacturing cost

B. Discrete compound interest

C. Depreciation by sinking fund method

D. Cash ratio

878. Extraction of _________________ employs an electrolytic process ?
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A. Aluminium

B. Silver

C. Copper

D. All A, B. and C

879. Surface tension of a liquid_________________?
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A. Decreases with rise in temperature

B. Is due to intermolecular forces of cohesion

C. Is responsible for the spherical shape of an isolated liquid drop

D. All A, B. & C
880. In a boundary layer developed along the flow, the pressure decreases in the downstream direction. The boundary layer thickness in this case will _______________?
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A. Increase gradually

B. Decrease gradually

C. Remain constant

D. Increase rapidly

881. With increase in the discounted cash flow rate of return, the ratio of the total present value to the initial investment of a given project ?
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A. Increases linearly

B. Decreases

C. Increases

D. Remain constant

882. Blow off cock is provided in steam boiler to ____________________?
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A. Drain out water and sludge during its repair

B. Put out the fire in the furnace when the water level in the boiler falls to unsafe limit

C. Regulate the supply of water in boiler

D. Guard the boiler in case of abnormal rise in steam pressure

883. Effective and nominal interest rates are equal, when the interest is compounded__________________?
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A. Fortnightly

B. Half-yearly

C. Annually

D. Monthly

884. Out of the following substances, one ton of ______________ will store the maximum heat for a rise of 30C in temperature ?
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A. Lignite

B. Lime stone

C. Water

D. Steel

885. Nitrile rubber is produced by the polymerisation of__________________?
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A. Isobutylene and isoprene

B. None of these

C. Acrylonitrile and styrene

D. Acrylonitrile and butadiene
886. Pick out the wrong statement ?
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A. The X-rays cannot be deflected by electric field unlike cathode rays

B. gas by X-rays

C. The quality of X-rays can be controlled by varying the anode-cathode voltage

D. Crystal structure of a material can be studied by an electron microscope

E. The intensity of X-rays can be measured by ionisation current produced due to the ionisation

887. Common salt is produced from sea water in India generally by the ________________ method?
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A. None of these

B. Solar evaporation

C. Freeze drying

D. Electrolytic

888. The ability of tool steel to resist softening at high temperatures is termed as __________________ hardness?
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A. Super

B. Extended

C. Red

D. Extreme

889. Utilities cost in the operation of chemical process plant comes under the ?
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A. General expenses

B. Direct production cost

C. Plant overhead cost

D. Fixed charges

890. Venturimeter is used to measure the flow rate of fluids in pipes, when the pipe is in ______________ position ?
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A. Inclined

B. Vertical

C. Any

D. Horizontal

891. A semi-conductor is damaged & behaves like a conductor, on passing a strong electric current through it, because it heats up the crystals & breaks the covalent bonds resulting in _______________ electrons ?
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A. None of these

B. Lack of free

C. Excess of

D. Decrease in

892. A reactor having a salvage value of Rs. 10000 is estimated to have a service life of 10 years. The annual interest rate is 10%. The original cost of the reactor was Rs. 80000. The book value of the reactor after 5 years using sinking fund depreciation method will be Rs _____________?
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A. 60,196

B. 53,196

C. 43,196

D. 40,096

893. Break-even point is the point of intersection of_____________________?
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A. Fixed cost and total cost

B. Fixed cost and sales revenue

C. None of these

D. Total cost and sales revenue
894. In inventory control theory, the economic order quantity (EOQ) is the____________________?
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A. Average level of inventory

B. None of these

C. Optimum lot size

D. Lot size corresponding to break even analysis

895. Which of the following fastening devices has its both ends threaded ?
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A. Stud

B. Split nut

C. Bolt

D. Set screw

896. Though tin occurs lower than iron in the electrochemical series, yet it is coated on steel for corrosion protection, because of its________________?
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A. Resistance to vegetable acids as the tin plate are commercially used in canning industry

B. None of these

C. Abundant availability

D. Lower cost

897. A steam pipe is intended to be insulated with two layers of insulating materials of different thermal conductivities. For minimum heat transfer to take place_________________?
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A. Either of the insulating material could be put on either side

B. The better insulating material should be put outside

C. The better insulation material should be put just next to pipe (i.e., inside)

D. ide (i.e., just next to the pipe)

E. Steam temperature is considered before deciding as to which insulating material is to be put

898. Total product cost of a chemical plant does not include the ______________ cost?
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A. Depreciation, property tax and insurance

B. Operating labour, supervision and supplies

C. Market survey

D. Overhead and utilities

899. Which of the following is not a product of coal tar distillation ?
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A. None of these

B. Anthracene

C. Creosote oil

D. Carbolic oil

900. Removal of non-condensable from steam or other vapour is termed as the ________________ process?
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A. Deaeration

B. Condensation

C. Exhaust

D. Scavenging