Questions

Q:

The working principle of a washing machine is

A) reverse osmosis B) diffusion
C) centrifugation D) dialysis
 
Answer & Explanation Answer: C) centrifugation

Explanation:

The working principle of a washing machine is centrifugation.

 

The_working_principle_of_a_washing_machine_is1542349278.jpg image

 

Centrifugation is a separation process which uses the action of centrifugal force to promote accelerated settling of particles in a solid-liquid mixture.

The washing machine consists of centrifuge for this purpose. A centrifuge is a piece of equipment that puts an object in rotation around a fixed axis, applying a force perpendicular to the axis of spin that can be very strong.

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Q:

The expressway is defined as a

 

A) limited-access or controlled-access highway. B) road designed for express transport.
C) high-speed privately owned highway. D) form of improved rural highway.
 
Answer & Explanation Answer: A) limited-access or controlled-access highway.

Explanation:
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Q:

Improve the bracketed part of the sentence.

 

When he arrived at the party, he (had been dressed) in a black suit.

 

A) dressed B) had dressed
C) was dressed D) no improvement
 
Answer & Explanation Answer: C) was dressed

Explanation:
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Q:

Improve the bracketed part of the sentence.

When I last saw Ravi, he (had been running) to catch his bus.

A) ran B) was running
C) had run D) no improvement
 
Answer & Explanation Answer: B) was running

Explanation:
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Q:

Select the synonym of

 

initiative

 

A) apathy B) cowardice
C) dynamism D) lethargy
 
Answer & Explanation Answer: C) dynamism

Explanation:
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Q:

Select the synonym of

 

accolade

 

A) bungle B) performance
C) fiasco D) distinction
 
Answer & Explanation Answer: D) distinction

Explanation:
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Q:

Read the passage carefully and choose the best answer to each question out of the four alternatives.


Manja, or the glass-coated string used for flying kites, not only poses threat to humans, animals and birds but also to trees. A study by the country's oldest botanical garden has revealed that it poses a great threat to trees. But how can a snapped string struck in a tree kill the tree? Apparently, it does so by allying with the creepers in the garden.


A research paper by three scientists of the Acharya Jagdish Chandra Bose Indian Botanic Garden, located in West Bengal's Howrah district, illustrates in detail how the manja, in collusion with climbers, does the damage. "The abandoned, torn kite strings act as an excellent primary supporting platform for the tender climbers, giving easy passage to reach the top of the trees. Lateral branches from the top of the climber and other accessory branches from the ground reaches the top taking support of the first climber, completely covers the treetop, thus inhibiting the penetration of sunlight," says the research paper.


How can a tree be killed by a creeper?

 

A) By blocking its access to sunlight B) By wrapping its tentacles around its branches
C) By sucking away the nutrients D) By secreting toxic chemicals
 
Answer & Explanation Answer: A) By blocking its access to sunlight

Explanation:
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Q:

Which among the following noble gas has highest molar mass?

 

A) Kr   B)  Ne  
C)  Ar   D)  Xe
 
Answer & Explanation Answer: D)  Xe

Explanation:
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