Residual soils are formed by

A company owns some land and buildings for which the following details are relevant : Cost of land Taka 50,000; cost of building Taka 100,000, estimated life of building 20 years, estimated residual value of building Taka 2000; estimated residual value of land Taka 50,000. The company uses the straight line depreciation method. Which is the correct annual depreciation charge for this asset?

A

Taka 4000

B

Taka 4900

C

Taka 7400

D

Taka 7500

For better strength and stability, the fine grained soils and coarse grained soils are compacted respectively as

A

dry of OMC and wet of OMC

B

wet of OMC and dry of OMC

C

wet of OMC and wet of OMC

D

dry of OMC and dry of OMC where OMC is optimum moisture content

In case of foundations on black cotton soils, the most suitable method to increase the bearing capacity of soils is to

A

Increase the depth of foundation

B

Drain the soil

C

Compact the soil

D

Replace the poor soil

Which of the following soils is formed under typical monsoonal conditions?

A

Black Soils

B

Red Soils

C

Laterite Soils

D

None

On the basis of the process of their formation, which' of the following soils is formed differently from the other three?

A

Khadar

B

Bhangar

C

Bhabar

D

Regur

The residual volume is

A

The gas remaining in the lungs at the end of forceful expiration

B

Greater in COPD than in normal person

C

About 1200 ml in young adults

D

Measured directly by using a spirometer

E

Smaller in the old than in the young

Which one of the following phrases best describes residual magnetism?

A

Magnetism that remains in the core of an electromagnet after the current through the coil is turned off

B

The force of attraction between the poles of a permanent and temporary magnetic field

C

The amount of magnetic flux that is not confined to the core material of an electromagnet

D

The circular magnetic field that surrounds a conductor carrying a current

E

None of the above

Which one of the following residual biases involves the GPS accuracy?

A

Satellite dependent biases due to uncertainty in the orbital parameters of the satellite

B

Receiver-dependent biases due to clock stability with line

C

Signal propagation biases due to the sphere and troposphere propagation

D

All the above

Residual chlorine in water is determined by

A

Starch iodide method

B

Orthotolidine method

C

Both (A) and (B)

D

None of the above

The amount of residual chlorine left in public water supply for safety against pathogenic bacteria is about

A

0.01 to 0.05 ppm

B

0.05 to 0.5 ppm

C

0.5 to 1.0 ppm

D

1.0 to 5.0 ppm

Residual soils are formed by

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