Chemical Engineering Previous Question Answers PSC, UPSC, SSC, IBPS

Chemical Engineering Previous Questions from PSC, UPSC and SSC

In the following question, a sentence / a part of sentence is underlined. Below are given alternatives to the underlined part which may improve the sentence. Choose the correct alternative. In case no improvement is required, choose "No Improvement" option.

The match was so very ordinary after all the hype generated by the fans.
Asked : SSC CGL Previous Tier 2
Avery ordinary
Bnothing to write home about

Cso ordinary
DNo improvement

Directions / next ten questions : Some part of the sentences may have errors and some are correct. Find out which part of the sentence has an error and blacken the circle corresponding to the appropriate correct option. If a sentence is free from error, blacken the circle corresponding to "No Error" option in the Answer Sheet.

Applicable only to next question

Have you been doing what has been asks of you
Asked : SSC MTS 2017 - Shift I
AHave you
Bbeen doing

Cwhat has been asks of you ?
DNo error

A compound X C₇H₈0 is insoluble in water, dil HCI and aqueous NaHC0₃ but
dissolves in dil NaOH. When X is treated with bromine water, it is converted rapidly
into a compound of formula C₇H₅0Br₃. The structure of X is
47.
Asked : SSC MPSC Food Safety Officer Food and Medicine Administration Gr-B 2016
A
B
C

The correct IUPAC name for the given structure is
Asked : SSC MPSC Food Safety Officer Food and Medicine Administration Gr-B 2016
A3-hydroxy-2-methylpent-5-al-en
B3-hydroxy-4-methylpent-4-en-1-al

C3-hydroxy-4-methylpent-1-al-4-ene
D3-hydroxy-2-methylpent-1-en-5-al

Operating profit of a chemical plant is equal to
Asked : TNPSC Executive Officer Grade-I Chemical Engineering 2012
Aprofit before interest & tax

Bprofit after tax plus depreciation
Cnet profit + tax
Dprofit after tax

Optimum economic pipe diameter for fluid is determined by the
Asked : TNPSC Executive Officer Grade-I Chemical Engineering 2012
Aviscosity of the fluid
Bdensity of the fluid
Ctotal cost consideration (pumping cost plus fixed cost of the pipe)

Dnone of these

If an amount R is paid at the end of every year for n years then the net present value of the annuity at an interest rate of i is
Asked : TNPSC Executive Officer Grade-I Chemical Engineering 2012
AR[(1+i)ⁿ-1/i]
BR[(1+i)ⁿ-1/i(1+i)ⁿ]

CR(1+i)ⁿ
DR/(1+i)ⁿ

Which of the following is not a principle of Pinch Technology
Asked : TNPSC Executive Officer Grade-I Chemical Engineering 2012
ADo not use a hot utility below the pinch point
BDo not use a cold utility above the pinch point
CAvoid loops in the heat integration system
Dnone of these

Gantt chart or Bar chart is helpful in
Asked : TNPSC Executive Officer Grade-I Chemical Engineering 2012
Aefficient utilization of man power and machines
Bpreparing production schedule

Cefficient despatching of products
Dinventory control

Pick out the wrong statement :
Asked : TNPSC Executive Officer Grade-I Chemical Engineering 2012
AGross margin = Net income - Net expenditure
BNet sales realization (NSR) = Gross sales - Selling expenses
CAt break-even point, NSR is more than the total production cost

DNet profit = Gross margin - Depreciation - Interest

Chemical engineering plant cost index is used for finding the present cost of a particular chemical plant, if the cost of similar plant at some time in the past is known. the present cost of the plant =

Original cost × [index value at present / index value at the time of original cost was obtained]

The most major component of this cost index is
Asked : TNPSC Executive Officer Grade-I Chemical Engineering 2012
Afabricated equipment and machinery

A balance sheet for an industrial concern shows
Asked : TNPSC Executive Officer Grade-I Chemical Engineering 2012
Athe financial condition at any given time

Bonly current assets
Conly fixed assets
Dcurrent and fixed assets

Payback method for measurement of return on investment
Asked : TNPSC Executive Officer Grade-I Chemical Engineering 2012
Agives a correct picture of profitability
Bunderemphasizes liquidity
Cdoes not measure the discounted rate of return

Dtakes into account the cash inflows after the recovery of investments.

A series of equal payments (e.g., deposit or cost) made at equal intervals of time is known as
Asked : TNPSC Executive Officer Grade-I Chemical Engineering 2012
Aperpetuity
Bcapital charge factor
Cannuity

Dfuture worth.

Direct costs component of the fixed capital consists of
Asked : TNPSC Executive Officer Grade-I Chemical Engineering 2012
Acontingency
Bon-site and off-site costs

Clabour costs
Draw material costs

'Six tenth factor' rule is used for estimating the
Asked : TNPSC Executive Officer Grade-I Chemical Engineering 2012
Aequipment installation cost
Bequipment cost by scaling

Ccost of piping
Dutilities cost

Utilities cost in the operation of chemical process plant comes under the
Asked : TNPSC Executive Officer Grade-I Chemical Engineering 2012
Aplant overhead cost
Bfixed charges
Cdirect production cost

Dgeneral expenses.

Pick out the wrong statement :
Asked : TNPSC Executive Officer Grade-I Chemical Engineering 2012
ANet worth means paid up share capital and reserve & surplus (i.e. share-holder's equity)
BReturn on equity = profit after tax/net worth
CWorking capital turnover ratio = sales / net working capital
DTotal cost of production is more than net sales realization (NSR) at break-even point.

Match List I (Terminology used in plant economics) correctly with List II (Factor) and select your answer using the codes given below :

List I	List II
a) Lang factor for a chemical plant	1. Ratio of gross annual sales to the fixed capital investment.
b) Depreciation	2. Ratio of capital investment to the delivered cost of major equipment.
c) Break-even point	3. It figures in the calculation of income tax liability on cash flows from an investment.
d) Turnover ratio	4. It is the point of intersection of total cost and sales revenue.

Asked : TNPSC Executive Officer Grade-I Chemical Engineering 2012
AA-2, B-3, C-4, D-1

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 the m^th year by the sum-of-year-digit method will be
Asked : TNPSC Executive Officer Grade-I Chemical Engineering 2012
AP-S/n
B1-[P/S]^m
Cm/n(P-S)
D2(n-m+1)/n(n+1) (P-S)

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
Asked : TNPSC Executive Officer Grade-I Chemical Engineering 2012
A1000 [1+0.1/4]²⁰

B1000(1+0.10)²⁰
C1000 [1+0.1/4]⁵
D1000 [1+0.1/2]⁵

Match List I correctly with List II and select your answer using the codes given below :

List I	List II
a) Capitalized cost	1. Comparing alternative investment choices
b) Unamortized value	2. Updating cost data of equipment
c) Pay-out period	3. Profitability evaluation
d) Cost index	4. Cost accounting
	5. Replacement decisions
	6. Working capital

Asked : TNPSC Executive Officer Grade-I Chemical Engineering 2012
AA-3, B-6, C-1, D-2

In a manufacturing industry, break-even point occurs when
Asked : TNPSC Executive Officer Grade-I Chemical Engineering 2012
Athe total annual rate of production equals the assigned value
Bthe total annual product cost equals the total annual sales

Cthe annual profit equals the expected value
Dthe annual sales equals the fixed cost

The total capital investment for a chemical process plant comprises the fixed capital investment and the
Asked : TNPSC Executive Officer Grade-I Chemical Engineering 2012
Acoverhead cost
Bworking capital

Cindirect production cost
Ddirect production cost

Four major constituents of atmospheric air are
1. N²
2. Ar
3. O²
4. CO²
^{Arrange them in ascending order of their % in air :}
Asked : TNPSC Executive Officer Grade-I Chemical Engineering 2012
AIV,II,III,I

BI,IV,II,III
CIII,IV,II,I
DI,III,IV,II

Carbon monoxide is pollutant, which causes
Asked : TNPSC Executive Officer Grade-I Chemical Engineering 2012
Arespiratory disease
Basphyxiation leading to death

Cretardation in crop growth
Ddamage to building materials

Radioactive solid nuclear wastes are disposed off by
Asked : TNPSC Executive Officer Grade-I Chemical Engineering 2012
Ahigh temperature incineration
Bpathological incineration
Cpyrolysis
Dunderground burial in concrete containers.

Which of the following is not a natural source of air pollution
Asked : TNPSC Executive Officer Grade-I Chemical Engineering 2012
AVolcanic cruption and lightning discharges
BBiological decay of vegetable matter
CPhotochemical oxidation of organic matter
DNone of these

Which one of the following is not a main industrial heat source
Asked : TNPSC Executive Officer Grade-I Chemical Engineering 2012
AElectricity
BSmoking
CChemical action
DNone of these

Accidents in chemical plants are mostly due to
Asked : TNPSC Executive Officer Grade-I Chemical Engineering 2012
Afaulty operating procedures
Bimproper layout of the equipment
Cfailure of equipment

Dinadequate equipment design