Class 6 Maths MCQ Test for Chapter 5 Prime Time

Prime Time

Read Test instructions -

📝 Total Questions: 20
🕒 Test Duration: 20
✅ Test Format: MCQ
📚 Test Topic: Prime Time
🏆 Pass Score: 50%

N.B. Do not refresh your browser during test time.

1 / 20

Which of the following is NOT a factor of 24?

3

2

6

9

2 / 20

Which number is both prime and odd?

11

2

21

9

3 / 20

Which number has exactly two prime factors (not distinct)?

9

6

15

5

4 / 20

Which pair is co-prime?

12 and 18

14 and 21

15 and 25

8 and 15

5 / 20

A number divisible by 10 must end with:

0

5

Even digit

1

6 / 20

To test divisibility by 8, we check the last:

1 digit

3 digits

2 digits

4 digits

7 / 20

If two numbers are co-prime, their LCM equals:

Difference

Product

Sum

HCF

8 / 20

The smallest perfect number is:

8

4

10

6

9 / 20

Which pair is a twin prime?

13 and 17

11 and 13

17 and 23

5 and 9

10 / 20

Which number is a multiple of both 4 and 6?

16

18

12

8

11 / 20

The LCM of 4 and 6 is:

12

10

8

24

12 / 20

Which of the following numbers has exactly two factors?

1

4

9

7

13 / 20

The smallest number divisible by 1 to 10 is:

5040

840

720

2520

14 / 20

The smallest prime number is:

3

0

2

1

15 / 20

Which number has exactly three distinct prime factors?

60

105

45

91

16 / 20

Which jump size will land on both 14 and 36?

3

4

6

2

17 / 20

A number divisible by 2 must be:

Even

Multiple of 5

Prime

Odd

18 / 20

Which number is divisible by 8?

852

856

854

858

19 / 20

Which of the following is a composite number?

21

13

19

17

20 / 20

A number with only one factor is:

Composite

Prime

1

0

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