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

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## Question number: 36

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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

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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

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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

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MCQ▾

### Question

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

### Choices

Choice (4)Response

a.

b.

c.

d.

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