महाराष्ट्र वन सेवा पूर्व परीक्षा २०१२ Questions And Answers

281.

The number 110110110 is divisible by :

A. 2, 3, 5 and 11

B. 2,5 and 9

C. 3, 4 and 9

D. 4, 5, 9 and 11

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282.

A snake on the ground saw a bird on the top of the tower at an angle of elevation 30°. Both started moving with the same speed and snake was attacked by the bird after moving a distance of 20 meters towards the foot of the tower. At what distance was the snake from the bottom of the tower initially?

A. 20 meters

B. 30 meters

C. 40 meters

D. 50 meters

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283.

How much amount of water can be stored in a cylindrical tank 14 meters in height and 12 meters in diameter ?

A. 1582.56 meter³

B. 1528.56 meter³

C. 1285.56 meter³

D. 1258.56 meter³

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284.

If then the value of n is :

A. 2

B. 4

C. 6

D. 12

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285.

Using Ogive curves, what can be obtained easily?

A. Mode

B. Mean

C. Mean and Mode

D. Median

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286.

The captain of a ship saw the top of the tower at an angle of elevation 63⁰. After moving a distance of 20 meters towards tower, the angle of elevation became 73⁰. What is the height of the tower ? (tan 63° = 1.96, tan 73° = 3.27)

A. 97.85 meters

B. 29.92 meter

C. 39.92 meters

D. 87.85 meters

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287.

The radius of the circle with equation x² + y² + 4x - 6y + 5 = 0 is :

B. 5 cm

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288.

The equation k²x² - 2(k-1)x+4 = 0 has real and equal roots, then k is :

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289.

A. 7

B. 0

C. 11

D. 7/5

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290.

For any natural number n, n(n+1)(n+2) is divisible by :

A. 2 but not by 3

B. 3 but not by 2

C. neither 2 nor 3

D. 2 and 3

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291.

What is the cost of making a copper ball of 10 cms diameter if 1 square cm copper sheet costs ₹ 25 ?

A. ₹ 6850

B. ₹ 7850

C. ₹ 8850

D. ₹ 9850

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292.

The recurring decimal 1.7 has value equal to __________ .

A. 17/9

B. 16/9

C. 1.77

D. 17/10

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293.

Find the possible values of sin x = if 8 sin x - cos x = 4

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294.

What is the value of

A. 0

B. 1

C. 1/2

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295.

The shaded region in the following figure is represented by the set ___________ .

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296.

If set A has 32 elements, set B has 42 elements and set AUB has 62 elements then the number of elements in the set

A. 74

B. 62

C. 12

D. 45

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297.

If a solid sphere of radius 10 cm is moulded into 8 spherical solid balls of equal radius then the radius of each such ball is :

A. 5 cm

B. 2.5 cm

C. 1.25 cm

D. 3.75 cm

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298.

A computer program consists of __________ .

A. A completed flowchart

B. Algorithms

C. Algorithms written in computer's language

D. Discrete logical steps

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299.

A cone and a sphere have equal radii and equal volumes. The ratio of the radius of the sphere to the height of the cone will be :

A. 1 : 4

B. 1 : 6

C. 1 : 8

D. 1 : 2

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300.

The number of lead balls, each 1 cm in diameter that can be made from a sphere of radius 6 cm is ________ .

A. 1278

B. 1728

C. 2178

D. 7218

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