Practice important objective questions for engineering competitive examinatio
What are the respective valumes of void ratio, porosity ratio and saturated density (in kN/m3) for a soil sample which has
saturation moisture content of 20% and specific gravity of grains as 2.6 ?
एक मिट्टी के नमूने के लिए शून्य अनुपात, सरंध्रता अनुपात और संतृप्त घनत्व (kN/m3 में) के संबंधित मान क्या हैं, जिसमें संतृप्त नमी की मात्रा
20% और अनाज का विशिष्ट गुरुत्व 2.6 है?
The function of carbon fiber-reinforced polymer (CFRP) in construction is:
A fill having a volume of 1,50,000 cum is to be constructed at a void ratio of 0.8. The borrow pit soil has void ratio of 1.4.
The volume of soil required (in cubic metres) to be excavated from the borrow pit will be.
What is the quantity (Sq.m) of plastering required for the 6m length of wall which is 4m high and 50 cm thick ?
Read the statements:
i. Plinth area is calculated using external dimensions at floor level,excluding plinth offsets if any.
ii. Balconies and cantilever projections are not included in plinth area.
iii. Floor area equals plinth area minus the area occupied by walls.
Choose the correct answer.
While testing for COD of sewage, organic matter is oxidised by K2Cr2O7 in the presence of
The alum added as a coagulant in water treatment functions when the raw water is
One litre of sewage when allowed to settle for 30 minutes gives a sludge volume of 30 cm3 If the dry weight of this sludge
is 3.0 gms, then the sludge volume index will be
Match List - I with List - II
|
|
List -I |
|
List -II |
|
a |
Steel pipe |
1 |
Highly resistant to corrosion but can break easily |
|
b |
Concrete pipe |
2 |
Virtually corrosion resistant |
|
c |
Asbestos cement pipe |
3 |
Sulfide corrosion |
|
d |
Vitrified clay |
4 |
Electrolyte corrosion |
Match the following
|
|
Air Pollutant |
|
Effect |
|
I |
Carbon monoxide |
A |
Asphyxia |
|
II |
Halogenated Solvents |
B |
Attack the liver |
|
III |
Hydrocarbons |
C |
Cause cancer |
Match List-I with List-Il and select the correct answer using the codes given below:
List-I (Treatment Unit)
A. Grit chamber
B. Primary sedimentation
C. Activated sludge
D. Sludge digestion
List-II (Detention Time)
1. Six hours
2. Two minutes
3. Two hours
4. Twenty days
Codes:
A B C D
Water may not contain much impurities if its source is
The quantity of cement required for 1 cubic metre of concrete of mix 1:2:4 is:
|
|
List -I |
|
List -II |
|
a |
Hardy Cross method |
1 |
Long and narrow pipe |
|
b |
Equivalent pipe |
2 |
Establishes analysis between flow fluid and flow of current |
|
c |
Circle method |
3 |
Algebraic sum of head loss in any closed loop is zero. |
|
d |
Electrical Analysis |
4 |
Domestic suply is neglected and fire demand in considered |
Which of the following is the performance efficiency of slow sand filter?
1. It removes about 98 to 99% bacteria.
2. It removes turbidity to the extent of 50 PPM.
3. It does not remove colour of raw water.
4. It removes about 95% colloidal matter.
Which of the following statement is/are correct in the context of treatment of sewage?
I. Primary treatment consists of removing large suspended organic solids.
II. After primary treatment secondary treatment involves further treatment of the effluent, coming from the primary
sedimentation tank.
Consider the following any identify the correct answer.
Statement A: In case of trickling filters, the bacterial film coating the grains of the filter media is stationary and likely to become clogged
after some time.
Statement B: In case of activated sludge process, the finer suspended particles of sewage are themselves coated with the bacterial film, which is kept moving by the constant agitationThe bacterias which may survive with or without free oxygen, are called
Which of the following statement is correct regarding acid rains?
1. The value of pH falls to 5 or below, the rain is termed as acid rain.
2. Acid rain can acidify fresh water of lakes, reservoirs, springs, well.
Which of the following statement is correct regarding hardness of water?
I. Hardness in water is caused by Ca²+ and Mg2+ ions
II. Hard water is suitable for bathing, washing and cleaningThe spacing of manholes along a straight portion of a sewer is 300 m, the diameter of the sewer may be
Assertion (A): The leakage losses are less when the water supply is intermittent.
Reason (R): Pressure is less in intermittent water supply.
If the length of a 16 mm diameter bar is 10 m, its weight is:
Statement (I): The BOD test is conducted for 5 days at 20°C.
Statement (II): The amount of oxygen utilized by microorganisms anaerobically is called BOD.
Assertion (A): A discrete particle (of diameter d0) settling in a circular sedimentation tank follows a parabolic path.
Reason (R): The downward settling velocity (v0) of the discrete particle (of diameter d0) in a circular sedimentation tank does not change with time.
If total hardness and alkalinity of a water sample are 200 mg/l as CaCO3 and 260 mg/l as CaCO3 respectively, what are the values of
carbonate hardness and non-carbonate hardness?
A rapid sand filter for a town with water requirement of 1 MLD is to be provided with rate of filtration at 4000 //hr/m² with backwash system.
What would be the size of the filter and its underdrainage system to the nearest approximation?
An industrial waste water enters a stream having a BOD concentration of 10 mg/L and a flow of 20 m³/s. If the flow of wastewater is 1.5
m³/s and its BOD concentration is 250 mg/L, then the BOD concentration in the stream at a point downstream of the point of confluence of
wastewater with the stream will be
Which method is used to locate contours when the area to be surveyed is small and the ground is not much undulating?
Araldite is
Match the following
निम्नलिखित का मिलान करें
|
|
List I |
|
List II |
|
A |
Sal / साल |
1 |
Strongest / सबसे मजबूत |
|
B |
Mango/ आम |
2 |
Least durable/ सबसे कम टिकाऊ |
|
C |
Deodar/ देवदार |
3 |
Slowest in reaction / प्रतिक्रिया में सबसे धीमा |
Codes:
A B C
Which of the following charcterstics features may be used while plotting a contour plan?
1. Two contour lines having the same elevation cannot unite and continue as one line.
2. Contour lines close together indicate a gentle slope.
3. Contour lines cross a valley line at right angles.
Select the correct answer using the codes given below.
Match the following
निम्नलिखित का मिलान करें
|
|
List I |
|
List II |
|
A |
Shallac or lac/ शेलैक या लाख इसमें घुलता है
|
1 |
Methylated spirit / मिथाइलेटेड स्पिरिट
|
|
B |
Amber dissolves in/ एम्बर इसमें घुलता है |
2 |
Boiled linseed oil/ उबला हुआ अलसी का तेल |
|
C |
Mastic dissolves in/ मैस्टिक इसमें घुलता है |
3 |
Turpentine/ तारपीन |
Codes:
A B C
Match the following / निम्नलिखित का मिलान करें
|
List - I |
List - II |
|
A.Theodolite |
1. Bearings/ बीयरिंग |
|
B. Compass/ दिशा-सूचक यंत्र |
2. Angles/ एंगल्स |
|
C. GPS |
3. Distances/ दूरी |
|
D. Total Station/ टोटल स्टेशन |
4. Co- ordinates |
|
|
5. Latitudes and Departures/ अक्षांश और प्रस्थान |
Bakelite is
The following offsets were taken from a chain line to an irregular boundary line at an interval of 10 m.
0, 2.50, 3.50, 5.00, 4.60, 3.20, 0 m
The area (in m²) between the chain line, the irregular boundary line and the end offsets by trapezoidal formula is:
एक चेन लाइन से एक अनियमित सीमा रेखा तक 10 m के अंतराल पर निम्नलिखित ऑफ़सेट लिए गए:
0, 2.50, 3.50, 5.00, 4.60, 3.20, 0 m
ट्रैपेज़ॉइडल सूत्र (trapezoidal formula) का उपयोग करते हुए, चेन लाइन, अनियमित सीमा रेखा और अंतिम ऑफ़सेट के बीच का क्षेत्रफल (m²
में) है:
Which of the following statements to setup the theodolite at intermediate points on the curve is/are correct?
1. When the point of curve is visible from the intermediate point.
2. When the point of curve is not visible from the intermediate point.
1. जब वक्र का बिंदु, मध्यवर्ती बिंदु से दिखाई दे रहा हो।
2. जब वक्र का बिंदु, मध्यवर्ती बिंदु से दिखाई न दे रहा हो।
When a brick is cut off lengthwise the cut out bricks are called
Simpson's rule for calculating areas states that the area enclosed by a curvilinear figure divided into an even number of
strips of equal width, is equal to
For window and door glass panes of maximum size 60 cm x 60 cm, the thickness of sheet glass generally adopted is
The wall constructed along the slopes to protect the slopes of cutting from the adverse effect of atmosphere are called as
Which of the following instruments is used either to enlarge or to reduce a plan already drawn?
A lighthouse is just visible at a certain station at the sea level. If the distance between the station and the lighthouse is 40
km, then the height of lighthouse is approximately-
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