# NSTSE (National Science Talent Search Exam- Unified Council) Class 7: Questions 409 - 416 of 1732

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## Question 409

### Question

MCQ▾

What is a thermostat?

### Choices

Choice (4)Response

a.

Device use to measure moisture content in the atmosphere

b.

Device that keep food hot.

c.

Device use to measure temperature of oil

d.

Device that automatically regulates temperature when the temperature reaches a certain point.

## Question 410

MCQ▾

### Choices

Choice (4)Response

a.

- 1

b.

- 113

c.

1

d.

0

## Question 411

### Question

MCQ▾

What fraction of the figure below is shaded?

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question 412

### Question

MCQ▾

The rationalizing factor of is

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question 413

### Question

MCQ▾

The arithmetic mean of nine given numbers is 78. Their sum is

### Choices

Choice (4)Response

a.

Between 624 and 702

b.

More than 702

c.

624

d.

702

## Question 414

### Question

MCQ▾

How many triangles can be seen in this drawing?

### Choices

Choice (4)Response

a.

2

b.

5

c.

3

d.

4

## Question 415

### Question

MCQ▾

The product of two rational numbers is . If one of the number is , then the other number is

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question 416

### Question

MCQ▾

While removing brackets the order in which the brackets are removed is

### Choices

Choice (4)Response

a.

{} , () , []

b.

[] , {} , ()

c.

() , {} , []

d.

None of the above

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