NSO Level 1- Science Olympiad (SOF) Class 8: Questions 36 - 39 of 1076

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Question number: 36

» Mental Ability

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MCQ▾

Question

Start with the number X. Double it and then add 6. If the result is , the value of X is ________?

Choices

Choice (4)Response

a.

15

b.

5

c.

3

d.

2

Question number: 37

» Mental Ability

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MCQ▾

Question

A milkman mixed 2 litres of water for every 3 litres of milk and thus prepared a mixture of milk and water of 30 litres. If he finally adds 12 litres of pure milk to the mixture, find the ratio of milk and water in the mixture.

Choices

Choice (4)Response

a.

6: 7

b.

4: 5

c.

5: 2

d.

7: 3

Question number: 38

» Mental Ability

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MCQ▾

Question

Which of the following statement is true?

Choices

Choice (4)Response

a.

The centroid of an acute angled triangle always lies in the inside the triangle

b.

The orthocenter of an obtuse angled triangle is the outside of the triangle

c.

The circumcentre of an acute angled triangle is lies in the interior of the triangle.

d.

All a. , b. and c. are correct

Question number: 39

» Mental Ability

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MCQ▾

Question

In the diagram, ABCD and DEFG are rectangles. What is the area of the shaded region in ?

Hexagon poly1Hexagon poly1: Polygon D, H, B, C, F, GAngle αAngle α: Angle between G, D, G’Angle αAngle α: Angle between G, D, G’Angle βAngle β: Angle between E, F, E’Angle βAngle β: Angle between E, F, E’Angle γAngle γ: Angle between C, A, C’Angle γAngle γ: Angle between C, A, C’Segment cSegment c: Segment [A, B] of Triangle t1Segment aSegment a: Segment [B, C] of Triangle t1Segment bSegment b: Segment [C, A] of Triangle t1Segment dSegment d: Segment [D, E] of Quadrilateral q1Segment eSegment e: Segment [E, F] of Quadrilateral q1Segment fSegment f: Segment [F, G] of Quadrilateral q1Segment gSegment g: Segment [G, D] of Quadrilateral q1Segment d_1Segment d_1: Segment [D, H] of Hexagon poly1Segment hSegment h: Segment [H, B] of Hexagon poly1Segment b_1Segment b_1: Segment [B, C] of Hexagon poly1Segment c_1Segment c_1: Segment [C, F] of Hexagon poly1Segment f_1Segment f_1: Segment [F, G] of Hexagon poly1Segment g_1Segment g_1: Segment [G, D] of Hexagon poly1Atext1 = “A”Btext2 = “B”Ctext3 = “C”Dtext4 = “D”Etext5 = “E”Ftext6 = “F”Gtext7 = “G”Htext8 = “H”7 cmtext9 = “7 cm”3 cmtext10 = “3 cm”(r 2) cmtext11 = “ (r 2) cm”3 cmtext12 = “3 cm”r cmtext13 = “r cm”5 cmtext14 = “5 cm”

Find the Area of Shaded Region

Choices

Choice (4)Response

a.

b.

c.

d.

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