How to practice format:nat

Attempt a question, record the concept and assumptions, then check the available answer. Rework mistakes after revising the relevant concepts. Topic tags can overlap; review the question context.

Questions 1–10 of 180. Imported answers require independent review unless marked reviewed.

Topic practice 180 questionsPage 1 of 18

Question 24

Open question
ARNAT1 markNeeds review
The minimum number of masonry units of size 200 mm × 100 mm × 100 mm each, required to construct a solid dry wall of length 3 m, height 2 m, and thickness 0.20 m, is __________ (in integer).

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Question 25

Open question
ARNAT1 markNeeds review
A commercial property has a total floor space of 15,000 m², consisting of 2/3rd office space and 1/3rd retail space. The parking standards considered in this property for office and retail spaces are 6 and 4.5 Equivalent Car Space (ECS) per 100 m², respectively. The total number of ECS required for the retail space in this property is __________ (in integer).

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Question 26

Open question
ARNAT1 markNeeds review
For a computer lab, a set of furniture has just been purchased at the cost of Rs. 8,50,000. The useful life of this furniture is 8 years. If the annual depreciation rate is 15%, then the salvage value of this furniture (in Rs.) is __________ (rounded off to the nearest integer).

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Question 27

Open question
ARNAT1 markNeeds review
The geometric construction of a golden mean rectangle is shown in the figure below. It starts with a square ABCD of 1 cm side. Continuing the development of the golden mean rectangles, the derived length of IJ (in cm) is __________ (rounded off to three decimal places).
Diagram for Architecture and Planning question 27


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Question 28

Open question
ARNAT1 markNeeds review
If a site of 1,00,000 m² accommodates 500 dwelling units (DU), then the residential density (in DU/acre) is __________ (rounded off to nearest integer).

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Question 43

Open question
ARNAT2 marksNeeds review
A city’s population in 2025 is 1,75,000 and is expected to increase in the next three decades at a growth rate of 8.5% per decade. In 2055, the estimated per capita domestic water demand will be 175 litres per day. The total daily domestic water demand for the city in 2055 (in million litres per day) will be __________ (round off to two decimal places).

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Question 44

Open question
ARNAT2 marksNeeds review
The section of a R.C.C. staircase flight is shown in the figure below. Each riser and tread of the staircase is 150 mm and 300 mm, respectively. The steps are supported by a 75 mm thick waist slab.
The width of the staircase is 1500 mm. The flight consists of 10 steps. Consider reinforcement to be 0.75% by volume of the total R.C.C. The density of steel is 7800 kg/m³. The amount of reinforcement required to construct the staircase flight (in kg) is __________ (rounded off to two decimal places).
Diagram for Architecture and Planning question 44


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Question 45

Open question
ARNAT2 marksNeeds review
A rectangular open concrete drain channel has base width of 3 m and flow depth of 1.5 m. The channel bed slope is 0.001. If the Manning’s roughness coefficient of concrete used in this channel is 0.018, then the average flow velocity of this channel (in m/s) is __________ (rounded off to two decimal places).

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Question 46

Open question
ARNAT2 marksNeeds review
A construction project consists of 7 activities. These activities, their connecting events, and the three PERT times (optimistic, likely, and pessimistic), in days, are listed in the table below. The project starts on 27ᵗʰ July 2026. Assuming no holidays for the entire duration of the project except 15ᵗʰ August 2026, the expected date of completion of the project will be __________ August 2026 (mention the date in integer).
Activity
Connecting Events
Three PERT Times (in Days)
P
1 → 2
4 – 6 – 8
Q
1 → 3
5 – 6 – 13
R
2 → 5
6 – 8 – 22
S
2 → 3
8 – 11 – 14
T
3 → 5
2 – 4 – 12
U
3 → 4
4 – 8 – 18
V
4 → 5
5 – 7 – 15

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Question 47

Open question
ARNAT2 marksNeeds review
A socio-economic survey of a city is planned with a sample size of 1250 persons, having the same proportion of age and sex distribution of the city population, as given in the table below. The required number of representative female respondents of the age group 19 to 40 years, is __________ (round off to nearest integer).
Age group (in years)
Male (%)
Female (%)
0 to 6
2
1.5
7 to 18
8.5
6
19 to 25
14.5
13.5
26 to 40
14.5
11
41 to 50
12
8
51 to 60
2.5
2.5
60 +
1.5
2

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