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:

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:

Which sentence describes a legislative referendum?

A) Voters approve a measure that is nonbinding and can be ignored.	B) Voters approve or reject a proposal without the legislature.
C) Voters sign a petition to gather support for an issue.	D) A legislature passes a bill that must be approved by voters.

Answer & Explanation Answer: D) A legislature passes a bill that must be approved by voters.

Explanation:

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Q:

Along the path of the vas deferens which glands add their secretions in the sperms?

I. Prostate

II. Seminal vesicles

III. Scrotum

A) Only I and III	B) Only I and II
C) Only II and III	D) All I, II and III

Answer & Explanation Answer: B) Only I and II

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

$- v^{2} = u^{2} + (- 2 gh) 400 = u^{2} - 2 x 10 x 25 u^{2} = 900 = > u = 30 m / s$

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Q:

Match the characteristics with their market structure:

(a) Differentiated products, but close substitutes for consumers so their demand curves are elastic
(b) Homogeneous product, all goods are perfect substitutes for consumers

A) (a) Monopolistic Competition, (b) Pure Competition	B) (a) Monopolistic Competition, (b) Pure Monopoly
C) (a) Pure Monopoly, (b) Pure Competition	D) (a) Pure Monopoly, (b) Pure Competition

Answer & Explanation Answer: A) (a) Monopolistic Competition, (b) Pure Competition

Explanation:

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Q:

Which of following sectors does NOT come under tertiary sector?

A) Electricity	B) Business Services
C) Transport	D) Trade

Answer & Explanation Answer: A) Electricity

Explanation:

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Q:

Rearrange the parts of the sentence in correct order.

In punishment for the uprising,

P - called tributes, to participate
Q - each of the twelve districts must provide
R - one girl and one boy,

A) PRQ	B) PQR
C) RQP	D) QRP

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