Questions

Q:

An electrically charged atom or group of atoms is called

A) An ion B) A meson
C) A electron D) None of the above
 
Answer & Explanation Answer: A) An ion

Explanation:

An electrically charged atom or group of atoms formed by the loss or gain of one or more electrons is called an Ion.

Cation:

An ion is a cation (positive ion) if it is created by electron loss and is attracted to the cathode in electrolysis.

Anion:

An ion is an anion (negative ion) if it is created by an electron gain and is attracted to the anode.

 

The valence of an ion is equal to the number of electrons lost or gained and is indicated by a plus sign for cations and a minus sign for anions.

Ex: Na +, Cl−, Ca ++,...

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Q:

Which one of the following waterfalls in india has the most height _____

A) Barchipani Falls B) Kunchikal Falls
C) Meenmutty Falls D) Jog Falls
 
Answer & Explanation Answer: B) Kunchikal Falls

Explanation:
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Q:

Water covers _______________ % of the Earth’s surface.

 

A) 95 B) 75
C) 55 D) 35
 
Answer & Explanation Answer: B) 75

Explanation:
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Q:

"National Youth Day" is celebrated on which day ?

A) January 15 B) January 14
C) January 17 D) January 12
 
Answer & Explanation Answer: D) January 12

Explanation:

National Youth Day is celebrated in India on 12 January on the birthday of Swami Vivekananda. In 1984 the Government of India declared the day as the National Youth Day and since 1985 the event is celebrated in India every year.

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Q:

Draw a Transmission Gate-based D-Latch?

Answer

The Transmission-Gate's input is connected to the D_LATCH data input (D), the control input to the Transmission-Gate is connected to the D-Latch enable inputs (EN) and the Transmission-Gate outputs is the D_LATCH output(Q)

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Subject: Hardware

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Q:

A button that makes characters either upper or lower case and numbers to symbols___

A) Shift B) Ctrl
C) Space bar D) Back space
 
Answer & Explanation Answer: A) Shift

Explanation:
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Q:

A ball is thrown vertically upward from the ground. It crosses a point at the height of 25 m twice at an interval of 4 seconds. The ball was thrown with the velocity of

A) 18 m/s B) 25 m/s
C) 30 m/s D) 36 m/s
 
Answer & Explanation Answer: C) 30 m/s

Explanation:

The interval between object pass the same point is 4 sec.

That means in 2 sec, object reaches the top and in next 2 sec, it again reaches the same point.

By the info given, we can find the velocity of that point by using : v=u+(-gt)

0= u - 10×2

u = 20

Then the velocity at 25m is 20m/sec.

so the initial velocity is


-v2 = u2 + (-2gh)400 = u2 - 2x 10 x 25u2 = 900 => u = 30 m/s

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Q:

When designing the file structure for an operating system, what attributes are considered ?

Answer

Commonly, the different attributes for a file structure are naming,size, identifier, a level of protection, supported file types and location for the files.

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