# NSTSE (National Science Talent Search Exam- Unified Council) Class 7: Questions 417 - 424 of 1732

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## Question 417

### Question

MCQ▾

Identity element w. r. t. subtraction in integers is

### Choices

Choice (4)Response

a.

Does not exist

b.

- 1

c.

1

d.

0

## Question 418

### Question

MCQ▾

The solution of is

### Choices

Choice (4)Response

a.

2

b.

5

c.

d.

1

## Question 419

### Question

MCQ▾

The difference between the length and breadth of a rectangle is 46 m. If the perimeter is m, then the area is

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question 420

### Question

MCQ▾

In a , D is any point on AB and meets AC at E. If AD = 3.5 cm, DB = 3 cm and AE = 2 cm then AC = ________.

### Choices

Choice (4)Response

a.

6 cm

b.

3.7 cm

c.

6.5 cm

d.

4 cm

## Question 421

### Question

MCQ▾

Number of pairs of parallel lines in the given figure is

### Choices

Choice (4)Response

a.

4

b.

1

c.

3

d.

2

## Question 422

MCQ▾

Simplify

### Choices

Choice (4)Response

a.

b.

3

c.

1

d.

6

## Question 423

### Question

MCQ▾

A man purchased a bag of rice containing 50 kg for ₹ 150. He sold it at the rate of ₹ 3.25 per kg. Find the profit or less % .

### Choices

Choice (4)Response

a.

gain

b.

12 % gain

c.

loss

d.

6 % loss

## Question 424

### Question

MCQ▾

If the radii of two concentric circles are 20 cm and 36 cm respectively, then the area of the circulating ring in sq cm will be

### Choices

Choice (4)Response

a.

b.

c.

d.

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