Questions

Q:

Plants grow in size because of 

A) addition of cells B) increase in size of cells
C) enlargement of cells D) elongation of cells
 
Answer & Explanation Answer: A) addition of cells

Explanation:

Plants grow in size both in height and in girth. Enlargement of cells already present cannnot contribute much to the growth. Only addition of more and more cells could increase the size of the plant considerably.

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Q:

The pH of pure water is nearly 7.It will increase on the addition of

A) ammonia B) cane sugar
C) common salt D) hydrochloric acid
 
Answer & Explanation Answer: A) ammonia

Explanation:

Ammonia is a base. One adding ammonia to water,the resulting solution will become basic. pH of an alkaline solution is 7. So the pH will increase

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Q:

What is an operating system?

Answer

 


An operating system is a program that acts as an intermediary between the user and the computer hardware. The purpose of an OS is to provide a convenient environment in which user can execute programs in a convenient and efficient manner. It is a resource allocator responsible for allocating system resources and a control program which controls the operation of the computer hardware.

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Q:

Speed regulation of synchronous motor is

A) 1% B) 25%
C) Zero D) 0.5%
 
Answer & Explanation Answer: C) Zero

Explanation:

speed_regulation_of_synchronous_motor1553077296.jpg image

Synchronous motor is a motor which runs at a constant speed irrespective of load attached to it. So the speed regulation of synchronous motor is ZERO.

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Filed Under: Physics
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Q:

In C3 plants the conservation of water promotes

A) Photosynthesis B) The opening of stomata
C) Photorespiration D) None of the above
 
Answer & Explanation Answer: B) The opening of stomata

Explanation:

C3 plants are plants that undergo C3 photosynthesis, which means that they undergo the Calvin cycle (converting carbon dioxide into energy) in their chloroplasts and typically keep their stomata open during the day. These are the most common types of plants.

 

In C3 plants the conservation of water promotes Photorespiration.

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Q:

When should you stop at green and go at red?

Answer

While eating a watermelon, we all go along the red and stops at green.

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Q:

In which of the following, the cellular power plants - Mitochondria are absent?

A) Bacteria B) Red Algae
C) Brown Algae D) Green Algae
 
Answer & Explanation Answer: A) Bacteria

Explanation:

Mitochondria is absent in Bacteria as well as in Blue Green Algae. They are seen in eukaryotic cells for respiration purpose.

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Filed Under: Biology
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Q:

Which statement fragments a table as round robin?

A) FRAGMENT AS ROUND ROBIN IN dbspace 1, dbspace 2 B) FRAGMENT BY ROUND ROBIN IN dbspace1, dbspace 2
C) FRAGMENT TABLE BY ROUND ROBIN IN dbspace1, dbspace 2 D) FRAGMENT BY ROUND ROBIN
 
Answer & Explanation Answer: B) FRAGMENT BY ROUND ROBIN IN dbspace1, dbspace 2

Explanation:
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Filed Under: IBM Certification

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