महाराष्ट्र वन सेवा पूर्व परीक्षा २०१२ Questions And Answers

221.

What is the total surface area of a right circular cone of height 14 cm and base radius 7 cm ?

A. 344.35 cm²

B. 462 cm²

C. 498.35 cm²

D. None of these

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222.

The equation of the line passing through the point (-3, 2) and parallel to x axis is :

A. x + 3 = 0

B. x - 3 = 0

C. y + 2 = 0

D. y – 2 = 0

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223.

Study the following bar graph and answer the question given below.

What is the percentage increase in number of workers from 1982 - 83 to 1984 - 85 around ?

A. 57

B. 72

C. 125

D. 135

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224.

What is the height of the cone if volume of a cone and a sphere are the same for equal base radius of the cone r and radius of the sphere r ?

A. r

B. 2r

C. 3r

D. 4r

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225.

The centre of the circle with equation x² + y² – 2x – 2y-2 = 0 is :

A. (1, 1)

B. (1, 2)

C. (-1, -1)

D. (2, 1)

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226.

The internal measures of the cuboidal room are, length 12 m, breadth 6 m and height 4 m. What will be cost of white washing the 4 walls of the room at the rate of ₹15 per m² ?

A. ₹ 2160

B. ₹ 2150

C. ₹ 2140

D. ₹ 2130

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227.

If sin θ + sin²θ = 1 then cos²θ+ cos⁴θ = __________ .

A. 1

B. 2

C. 3

D. 4

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228.

If A={0, 2, 4, 6, 8, 10), B={0, 1, 2, 3, 4, 5, 6} and C={5, 7, 8, 9), then

A. {5, 7, 8}

B. {5, 8, 9}

C. {7, 8, 9}

D. {5, 8}

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229.

Fill in the blank :
If the angles of a triangle are 45°, 45°, 90°. Then the perpendicular sides are __________ times the hypotenuse.

A. 2

B. 3

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230.

If 1/8 th of a pencil is black, 1/2 of the remaining is white and the remaining portion of black is blue, then the total length of the pencil is :

A. 6 cm

B. 7 cm

C. 8 cm

D. 11 cm

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231.

The set { 0, 2, 4, 6, 8, 10 } can be written as :

A. { 2 x | 0 < x < 5 }

B. {x |10 < x < 5 }

C. { 2x | 0 < x < 5 }

D. None of these

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232.

If α and β are roots of the equation x² - 9x +20=0, find the value of α² + β²+ αβ

A. 61

B. -61

C. 21

D. -21

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233.

The following Pie-chart shows the percentage of Literate and Illiterate-Males and Females in a city. What is the difference between the number of Literate Males and Literate Females ?

A. 7500.0

B. 1500.0

C. 5000.0

D. 500.0

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234.

The L.C.M. of

A. 1/54

B. 10/27

C. 20/3

D. 16/3

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235.

A. 20⁰

B. 30⁰

C. 40⁰

D. 50⁰

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236.

What least value must be given to * so that the number 451*603 is exactly divisible by 9 ?

A. 2

B. 5

C. 8

D. 7

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237.

Two circles have radii 5 and 3. Ratio of their area is :

D. none of these

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238.

Two circular cylinders of equal volumes have their heights in the ratio 1:2, the ratio of their radii is :

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239.

Two straight lines with slopes my and my are parallel if :

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240.

The angle of elevation of a ladder leaning against a wall is 60° and the foot of the ladder is 4.6 m away from the wall. The length of the ladder is :

A. 2.3 m

B. 4.6 m

C. 9.2 m

D. 7.8 m

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