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Q:

In the following question, a sentence has been given in Active/Passive voice. Out of four alternatives suggested, select the one which best expresses the
same sentence in Passive/Active voice.


I saw the master conducting the orchestra.

A) I saw that the orchestra was being conducted by the master. B) I saw the orchestra being conducted by the master.
C) The master was seen conducting the orchestra by me. D) The master was conducting the orchestra and I saw that.
 
Answer & Explanation Answer: B) I saw the orchestra being conducted by the master.

Explanation:
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Q:

Which molecule is nonpolar and has a symmetrical shape?

A) NH3 B) HCl
C) H2O D) CH4
 
Answer & Explanation Answer: D) CH4

Explanation:

Among the given options, CH4 is a non polar molecule with symmetrical tetrahedral shape.

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Q:

What happens to air when it is heated?

Answer

When heated any substance, the molecules move apart from each other. Alike in the air the molecules move apart from each other. We know that the warm air is lighter than the cool air. Since after heating air gets warmer, it floats up and the cool air comes down to occupy the warm air place.

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Q:

The longest bone in the human body is

A) femur B) stapes
C) fibula D) tibia
 
Answer & Explanation Answer: A) femur

Explanation:

The femur is the longest bone in the human body. It is also called as thigh bone. Stapes in the shortest bone in the body that is present in the middle ear.

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Q:

The disease that has been eradicated from the world is

A) small pox B) poliomyelitis
C) leprosy D) seizures
 
Answer & Explanation Answer: A) small pox

Explanation:

The disease that has been eradicated from the world is small pox. Smallpox was an infectious disease caused by one of two virus variants, Variola major and Variola minor. The last naturally occurring case was diagnosed in October 1977 and the World Health Organization (WHO) certified the global eradication of the disease in 1980.

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Q:

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

The antigen-antibody immunological reaction is used to be regarded as typical of immunological responses. Antibodies are proteins synthesized by specialized cells called plasma cells, which are formed by lymphocytes (cells from the lymph system) when an antigen, a substance foreign to an organism's body, comes in contact with lymphocytes. Two important manifestations of antigen-antibody immunity are lysis, the rapid physical rupture of antigenic cells and the liberation of their contents into the surrounding medium, and phagocytosis, a process in which antigenic particles are engulfed by and very often digested by macrophages and polymorphs. The process of lysis is executed by a complex and unstable blood constituent known as complement, which will not work unless it is activated by a specific antibody; the process of phagocytosis is greatly facilitated when the particles to be engulfed are coated by a specific antibody directed against them.

One of the two important manifestations of antigen-antibody immunity is lysis while the other is

A) lymphocytes B) plasma
C) antigenic cells D) phagocytosis
 
Answer & Explanation Answer: D) phagocytosis

Explanation:
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Q:

Why does a fountain pen leak in aeroplane flying at a height?

A) Because of reduced viscosity of the ink in the pen B) Because of increased viscosity of the ink in the pen
C) Because of higher atmospheric pressure outside the pen D) Because of lower atmospheric pressure outside the pen
 
Answer & Explanation Answer: D) Because of lower atmospheric pressure outside the pen

Explanation:
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Q:

Expedite is the opposite of

A) hasten B) quick
C) hinder D) step up
 
Answer & Explanation Answer: C) hinder

Explanation:

Expedite means to do an action or work to be completed quickly or sooner. The opposite of expedite means late, delay, hinder,...

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