# NSO Level 1- Science Olympiad (SOF) Class 10: Questions 18 - 24 of 986

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## Question number: 18

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MCQ▾

### Question

Copper oxide in a beaker and add slowly while stirring,

The color of the solution is

### Choices

Choice (4)Response

a.

Blue to green color

b.

Blue to greenish blue

c.

Blue to black color

d.

No change

## Question number: 19

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MCQ▾

### Question

A farmer built a fence around his square plot. He used 32 fence poles on each side of the square. How many poles did he need together?

### Choices

Choice (4)Response

a.

128

b.

124

c.

144

d.

132

## Question number: 20

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MCQ▾

### Question

If , then value of is ________.

### Choices

Choice (4)Response

a.

1

b.

2

c.

0

d.

Question does not provide sufficient data or is vague

## Question number: 21

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MCQ▾

### Question

In a lottery, there are 9 prizes and 18 blanks. What is the probability of getting a prize?

### Choices

Choice (4)Response

a.

b.

c.

d.

Question does not provide sufficient data or is vague

## Question number: 22

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MCQ▾

### Question

The difference between the exterior angles of two regular polygon having sides equal to and is 18. Find the value of .

### Choices

Choice (4)Response

a.

5

b.

4

c.

6

d.

8

## Passage

DIRECTION: The following questions are based on the diagram given below.

I. Square represents female.

II. Triangle represents doctor.

III. Square represents African.

IV. Circle represents uneducated.

## Question number: 23 (1 of 3 Based on Passage) Show Passage

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MCQ▾

### Question

Who among the following is female doctor but not an African?

### Choices

Choice (4)Response

a.

5

b.

10

c.

8

d.

4

## Question number: 24 (2 of 3 Based on Passage) Show Passage

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MCQ▾

### Question

Who among the following is an African but not uneducated, female and doctor?

### Choices

Choice (4)Response

a.

15

b.

9

c.

10

d.

19

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