The most suitable pair of words that can be substituted is the blanks: Throughout Bangladesh. thousands of tube wells have tested------for Arsenic and have been declared----for human consumption.

The most suitable pair of words that can be substituted in the blanks : the licenses of ... drivers, when and if apprehended, should be ... with immediate effect and without showing any mercy.

A

experienced .... maintained

B

reckless .... revoked

C

untrained ... jailed

D

drunk ... banned

The most suitable pair of words that can be substituted in the blanks : With the ....of information technology, it is a ....exercise to impose censorship in the media.

A

introduction ...wastage

B

news ....useless

C

advent ....futile

D

supply ....pointless

As compared to shallow wells, deep wells have

A

More depth

B

Less depth

C

More discharge

D

Less discharge

In the decade there has been significant decrease in coffee consumption.During this same time, there has been increasing publicity about the caffeine in coffee's adverse long term effects on health. Therefore, the decrease in coffee consumption must have been caused by consumer's awareness of the harmful caffeine. Which of the following, if true,most seriously calls into question the explanation above ?

A

On average,people consume 30% less coffee today than they did 10 years ago

B

Sales of specialty types of coffee have held steady as sales of regular brands have declined

C

The consumption of fruit juice and caffeine-free herbal tea has increased over the decade

D

Coffee prices increased steadily in the past decade because of unusually severs frosts in coffee-growing nation's.

The price of sugar increases by 32%. A family reduces its consumption so that expenditure of the sugar is up by 10% only. If the total consumption of sugar before the price rise was 10 kg per month, then the consumption of sugar per month is approximately-

A

8.33 kg

B

8.5 kg

C

8.35 kg

D

8.73 kg

After the increase of price of oil by 40%, a family decided to reduce its oil consumption so that the expenditure for oil goes up by 26% only. If the total consumption of oil before the price rise was 10 kg per month, then what is the current consumption of oil per month (in kg)?

A

8

B

8.50

C

9

D

None of these

In most of the shell and tube heat exchangers, the tube pitch is generally __________ the tube diameter.

A

Less than

B

1.25-1.50 times

C

2.5 times

D

One-fourth of

For the same heat load and mass flow rate in the tube side of a shell and tube heat exchanger, one may use multipass on the tube side, because it

A

Decreases the pressure drop

B

Decreases the outlet temperature of cooling medium

C

Increases the overall heat transfer coefficient

D

None of these

Air is to be heated by condensing steam. Two heat exchangers are available (i) a shell and tube heat exchanger and (ii) a finned tube heat exchanger. Tube side heat transfer area are equal in both the cases. The recommended arrangement is

A

Finned tube heat exchanger with air inside and steam outside

B

Finned tube heat exchanger with air outside and steam inside

C

Shell and tube heat exchanger with air inside tubes and steam on shell side

D

Shell and tube heat exchanger with air on shell side and steam inside tubes

For the same diameter and thickness of tube, a water tube boiler has ________ heating surface as compared to fire tube boiler.

A

More

B

Less

C

Equal

D

None of these

The most suitable pair of words that can be substituted is the blanks: Throughout Bangladesh. thousands of tube wells have tested------for Arsenic and have been declared----for human consumption.

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