Questions

Q:

The capacity of a water heater is measured in

A) Gallons B) Liters
C) Meters D) Both A & B
 
Answer & Explanation Answer: D) Both A & B

Explanation:

The capacity of a water heater is measured in Gallons or Liters. In the USA, it is measured in Gallons and in India, we measure it in Liters.

Hence, if the capacity of the water heater is 15 gallons or 15 liters, then it says that it can hold 15 gallons or 15 liters of water.

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Q:

For Gamma radiation, what stops its penetrating abilities?

A) Lead B) Steal
C) Concrete D) All of the above
 
Answer & Explanation Answer: D) All of the above

Explanation:

The highly energetic gamma particles can penetrate most compounds that stop by other types of radiation. However, lead, steel, or concrete can reduce the high energy of these particles, making them less penetrating.

 

Hence, Gamma radiation can be stopped by a several inches of lead or steel, or several meters of concrete.

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Q:

Foods that allow micro organisms to grow are called Parasites.

A) TRUE B) FALSE
Answer & Explanation Answer: B) FALSE

Explanation:

No, the given statement is False.


Parasites are organisms that feed on other organisms causing harm to them.


Foods that allow micro organisms to grow are called Growth Mediums.

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Subject: Biology
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Q:

What three statements make up the cell theory?

A) All living things are made up of cells. B) New cells come frome exisiting cells.
C) Cells are the basic unit of structure/function in living things. D) All of the above
 
Answer & Explanation Answer: D) All of the above

Explanation:

The three statements make up the cell theory are::

 

1. All living things are made up of cells.

2. Cells are the basic unit of structure/function in living things.

3. New cells come frome exisiting cells.

 

These cells can vary widely, but all living things are composed of cells.

 

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Q:

Point out the error, if any, in the following program.

# include "stdio.h"

main()

{

     FILE *fp;

     char str[80];

     fp = fopen ("trail", "r");

     while (!feof (fp))

    {

           fgets (str, 80, fp);

           puts (str);

     }

     fclose (fp);

}

Answer

The last line from the file "trial" would be read twice. To avoid this, ues:


       While ( fgets (str, 80, fp) ! = NULL)


               puts (str);

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Subject: Programming

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Q:

Antisnake venom is prepared by 

A) Pasteur institute B) Hoffkine's institute
C) Birla's Institute D) Indian science Institute
 
Answer & Explanation Answer: B) Hoffkine's institute

Explanation:

Antisnake venom: In the Hoffkine Institute at Bombay snake venom in mild dose is injected into horses and the horses are induced to produce anti-venom bodies. These are extracted and used in cases of snake bites.

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Q:

The dwarf camels, known as Alpacas , Vicunas and llamas are found in 

A) Tibet B) Afghanistan
C) Burma D) Cyprus
 
Answer & Explanation Answer: A) Tibet

Explanation:

The llama, its wild cousin , the Vicuna and hump-less Alpaca are also found in the high pasture lands of the Andes region of Bolivia and peru, where they are useful as beasts of burden and for the production of fleece and meat.

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Q:

A parallel-plate capacitor of capacitance C1is  made  using  two  gold  plates.  Another parallel-plate capacitor of capacitance C2is made  using  two  aluminium  plates  with same  plate  separation,  and  all  the  four plates  are  of  same  area.  If gand aPare respectively  the  electrical  resistivities  of gold and aluminium, then which one of the following relations is correct?

A) C1>C2 B) C2>C1
C) C1pa = C2pg D) C1 = C2
 
Answer & Explanation Answer: D) C1 = C2

Explanation:

C1= capacitance of gold plates

C2=   capacitance   of   aluminium plates

rg= Gold’s resistivity

ra= Aluminium’s resistivity

As the capacitance depends on the shape,  size  &  geometrical  placing of  the  conductors  &  the  medium between them, hence, the value of capacitance  will  be  independent  of resistivity. Therefore, C1= C2

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