# NSO Level 1- Science Olympiad (SOF) Class 10: Questions 130 - 135 of 986

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## Question 130

Appeared in Year: 2011

### Question

MCQ▾

If every side of a triangle is doubled, then increase in the area of the triangle is ________.

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question 131

### Question

MCQ▾

What does color of change when iron nail is dipped in it?

### Choices

Choice (4)Response

a.

Light green to reddish brown

b.

Brown to light green

c.

Blue to light green

d.

Light green to blue

## Question 132

### Question

MCQ▾

The ratio of two numbers is and their sum is 400. The smaller of the two numbers is?

### Choices

Choice (4)Response

a.

160

b.

180

c.

120

d.

200

## Question 133

### Question

MCQ▾

Find the roots of the equation .

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question 134

### Question

MCQ▾

Which of the following aqueous solution will cause litmus paper to turn red?

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question 135

### Question

MCQ▾

Granny starts from her house towards West. After walking a distance of 30 metres, she turned towards right and walked 20 metres. She then turned left and moving a distance of 10 metres, turned to her left again and walked 40 metres. She now turns to the left and walks 5 metres. Finally she turns to her left. In which direction is she walking now?

### Choices

Choice (4)Response

a.

South

b.

East

c.

North-West

d.

North

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