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Q:

Damage to hearing is caused by sounds which exceed

A) 70 decibels	B) 80 decibels
C) 100 decibels	D) 120 decibels

Answer & Explanation Answer: D) 120 decibels

Explanation:

High frequency sound attacks the tympanic memberance and makes it defective. 120 decibels is too high a pitch to be heard and therefore it impairs the hearing ability.

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Filed Under: Biology

Q:

If a body weighs 12N on the surface of the earth, how much will it weigh on the surface of the moon where acceleration due to gravity is only one-sixth of that on earth's surface?

A) 12N	B) 2N
C) 10N	D) 6N

Answer & Explanation Answer: B) 2N

Explanation:

Weight is mass x g. Since mass is constant and g is only ${\frac{1}{6}}^{t h}$ of that on the earth. The weight on the moon is only ${\frac{1}{6}}^{t h}$ of that on the earth.

Therefore 2N i.e (b) is the answer.

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Filed Under: Physics
Exam Prep: AIEEE

Q:

A boy is swinging a ball attached to a string in a horizontal circle.If the string snaps

A) the ball will travel towards the center of the circle and fall down	B) it will continue to travel along a tangent to the circle at the point the ball was at the time of snapping and finally fall down
C) it will fall down at the same place where the string breaks	D) none of these

Answer & Explanation Answer: B) it will continue to travel along a tangent to the circle at the point the ball was at the time of snapping and finally fall down

Explanation:

The centripetal force having been removed the body cannot execute the curved path. (B) is Correct.

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Filed Under: Physics

Q:

In the case of bodies falling under gravity which of the following remains constant at a given place?

A) Kinetic energy	B) Potential energy
C) acceleration	D) all the above

Answer & Explanation Answer: C) acceleration

Explanation:

This acceleeration denoted by letter g varies from place to place. Unless stated otherwise, it can be taken 9.8 m/ $s^{2}$ .

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Filed Under: Physics
Exam Prep: AIEEE

Q:

Choose the option which indicates a valid argument containing logically related statements that is, where the third statement is a conclusion drawn from the preceding two statements.

A. Some straight forward things are people

B. All Perennial things are cats

C. Only cats are Perennial

D. All Perennial things are People

E. Some Straight forward things are cats

F. Some Straight forward things are Perennial

A) BCA	B) CFD
C) DFA	D) EAB

Answer & Explanation Answer: C) DFA

Explanation:

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Filed Under: Logic

Q:

Choose the alternative where the third segment in the statement can be logically deduced using both the preceding two, but not just from one of them.

I. All IIMs are in India. No BIMs are in India. No IIMs are BIMs

II. All IIMs are in India. No BIMs are in India .No BIMs are IIMs

III. Some IIMs are not in India. Some BIMs are not in India. Some IIMs are BIMs.

IV. Some IIMs are not in India. Some BIMs are not in India. Some BIMs are IIMs.

A) I Only	B) II Only
C) I and II	D) III and IV

Answer & Explanation Answer: C) I and II

Explanation:

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Filed Under: Logic

Q:

Sumanth walks 200 feet straight from his house, which is facing north and then he walks 100 feet in reverse direction.Further he takes a left turn and walks 300 yards.In Which direction is Sumanth now from his original position?

A) South-East	B) North-East
C) South-West	D) North-West

Answer & Explanation Answer: B) North-East

Explanation:

Starting From his house, Sumanth walks 200 feet straight towards North; we can write it as $N_{200}$ . Similarly, the other distances and directions can be considered and written as follows : (Notice that he covers 300 yards towards East; one yard = 3 feet and hence 300 yards = 900 feet)

$N_{200} S_{100} E_{900}$ Adding all south and all North distances and finding the net result, and also adding all East and all West distances and finding the net result, this can further be summarized as : $N_{100} E_{900}$

Thus, the direction from his original position is North-East.

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Filed Under: Direction Sense Test
Exam Prep: AIEEE , Bank Exams , CAT
Job Role: Bank Clerk , Bank PO

Q:

A horse is facing north. It turns 90 degrees in the clockwise direction, then 180 degrees in the anti-clockwise and then another 90 degrees in the same direction. Which direction is the horse facing now?

A) East	B) South
C) Southwest	D) Southeast

Answer & Explanation Answer: B) South

Explanation:

Starting from the initial point facing north, the horse turns 90 degrees clockwise, which means it turns towards East. Similarly, the other directions can be considered and written as : EWS Thus, the direction it is facing now is South.

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Filed Under: Direction Sense Test

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