Questions

Q:

Improve the bracketed part of the sentence.
She is not used (to sleep) for so long.

A) to be sleeping B) to sleep
C) to sleeping D) No improvement
 
Answer & Explanation Answer: C) to sleeping

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Filed Under: English
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Q:

Iron and manganese present as pollutants in water cannot be removed by_____

A) oxidation followed by settling and filtration B) chlorination
C) ion exchange process D) lime soda process or manganese zeolite process
 
Answer & Explanation Answer: B) chlorination

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Filed Under: Chemistry
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Q:

The largest artery in human body is

A) Aorta B) Capillary
C) Vena cava D) Pulmonary vein
 
Answer & Explanation Answer: A) Aorta

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Filed Under: Biology

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Q:

Pepsin is an enzyme that digests ______.

A) proteins B) starch
C) carbohydrate D) fats
 
Answer & Explanation Answer: A) proteins

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Filed Under: Biology
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Q:

Which   one   of   the   following   is   not   a semiconductor?

A) Silicon B) Germanium
C) Quartz D) Gallium arsenide
 
Answer & Explanation Answer: C) Quartz

Explanation:

Semiconductors are the basic materials used in the present solid state electronic devices like diode, transistor, ICs, etc. 2. Lattice structure and the atomic structure of constituent elements decide whether a particular material will be insulator, metal or semiconductor. Semiconductors are elemental (Si, Ge) as well as compound (GaAs, CdS, etc.). Silicon, Germanium, Gallium Arsenide are semiconductors, but Quartz is an insulator.

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Filed Under: Chemistry
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Q:

Which of the following green house gases has the greatest heat-trapping ability?

A) Chlorofluoro carbon B) Methane
C) Carbon dioxide D) Nitrous oxide
 
Answer & Explanation Answer: A) Chlorofluoro carbon

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Q:

Which of the following gases emitted from automobile exhaust is poisonous?

A) Carbon monoxide B) Carbon dioxide
C) Hydrocarbons D) Sulphur dioxide
 
Answer & Explanation Answer: A) Carbon monoxide

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Filed Under: General Science
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Q:

In the context of non­-conventional energy, what is the meaning of 'OTE' ?

A) Ocean Tidal Energy B) Ocean Thermal Energy
C) Ocean Tidal Electricity D) Other Thermal Energy
 
Answer & Explanation Answer: B) Ocean Thermal Energy

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Filed Under: Physics
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