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Achievers Section provides Free Mathematics Olympiad Practice Paper for Class 8 with answers . Mathematics Olympiad class 8 Practice Paper helps in revision and gives good practice in solving any question in the Olympiad exam.

Mathematics Olympiad

Mathematics Olympiad Practice paper

1. Find the missing number, if a certain rule is followed either row-wise or column-wise.

A. 1331
B. 121
C. 1150
D. 1911

Show Answer

A

Explanation:

The rule followed is:

(4  +  0  +  3)³ = 7³ = 343

(5  +  1  +  4)³ = 10³ = 1000

Similarly,

(3  +2  +  6)³ = 11³ = 1331

2. In a certain code language, if DEFENSIVE is coded as FCHCPQKTG, then how will PROTECTED be coded in the same code language?

 

A.TORPEDETC

B. RTQUDARCB

C. RPQRGAVCF

D. EFUDFUPSQ

 

Show Answer

C

Explanation:

3. Select the correct mirror image of the given combination of letters and numbers, if the mirror is placed vertically to the left.

                                           SO73CC22ER

Show Answer

B

4. How many 3’s are there in the given sequence, each of which is immediately preceded by an odd digit but not immediately followed by an even digit?

4 5 8 3 4 6 2 5 3 7 9 8 1 0 2 3 4 9 6 8 1 3 5 5

A. None
B. One
C. Two
D. Three

Show Answer

C

Explanation:

5. A, B, C, D,E, F, G and H are eight friends sitting around a circular table facing the centre. A sits second to the left of D, who is third to the left of E. C sits third to the right of G, who is not an immediate neighbour of E. H sits third to the right of B, who sits second to the right of G. Who sits between D and C?

A. B
B. H
C. G
D. E

Show Answer

A

Explanation:

6. A square transparent sheet with a pattern and a dotted line on it is given. Select a figure from the options as to how the pattern would appear when the transparent sheet is folded along the dotted line.

Show Answer

A

Explanation:

7. Find the numbers of triangles formed in the given figure.

Show Answer

D

Explanation:

8. If ‘-’ stands for ‘+’ ‘+’ stands for ‘-’, ‘x’ stands for ‘÷’ and ‘÷’ stands for ‘x’, then which of the following is correct?

A. 40 – 10 + 20 x 10 ÷ 4 = 40
B. 10 – 8 ÷ 4 x 8 + 9 = 5
C. 31 + 5 x 3 ÷ 4 – 9 = 21
D. 40 – 30 x 10 + 5 ÷ 7 = 10

Show Answer

B

Explanation:

After changing the symbols, we get

A. 40  + 10 -20 ÷ 10 x4

           = 40 +10 – 2 x 4

           = 40 + 10 – 8 = 42 ≠ 40

B. 10 + 8 x 4 ÷ 8 – 9

             = 10 + 8  x ½ – 9 = 10+ 4 – 9 = 5

C. 31 – 5 ÷ 3 x 4 + 9

            =31- 5/3 x 4 + 9

            = 31 – 20/3 + 9

            =40- 20/3 = 100/3 ≠ 21

D. 40 + 30 ÷ 10 – 5 x 7

          = 40 + 3 – 35 = 8 ≠ 10

9. If ‘M x N’ means M is the daughter of N’, ‘M + N means is the father of ‘N’, ‘M ÷ N’ means ‘M is the mother of N’, and ‘M’ – ‘N’ means ‘M’ is the brother of ‘N’, then in the expression ‘P ÷ Q + R – T x K’, how is P related to K?

A. Daughter-in-law
B. Mother-in-law
C. Aunt
D. Mother

 

Show Answer

B

Explanation:

P ÷ Q + R – T x K’ means P is the mother of Q who is the father of R. Also, R is the brother of T, who is the daughter of K. So, K is the mother of R and T. Also, Q is husband of K. So P is the mother-in-law of K.

 

10. Select a box from the options that is similar to the box formed when the given sheet of paper is folded to form a box.

Show Answer

B

ANSWER KEY

1.(A)

2.(C)

3.(B)

4.(C)

5.(A)

6.(A)

7.(D)

8.(B)

(9.(B)

10.(B)

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]]> https://achieversection.com/mathematics-olympiad-class-8/feed/ 0 Science Olympiad For Class 8 https://achieversection.com/science-olympiad-for-class-8/ https://achieversection.com/science-olympiad-for-class-8/#respond Mon, 09 Oct 2023 11:16:02 +0000 https://achieversection.com/?p=636 Achiever Section provides the practice papers for the National Science Olympiad (NSO) for Class 8 in this article. There are 15 important Science Olympiad for class 8 questions covered in this article. Throughout this practice paper, you will encounter a variety of questions covering different branches of science, including biology, chemistry, physics, and Earth sciences. […]

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Achiever Section provides the practice papers for the National Science Olympiad (NSO) for Class 8 in this article.

There are 15 important Science Olympiad for class 8 questions covered in this article. Throughout this practice paper, you will encounter a variety of questions covering different branches of science, including biology, chemistry, physics, and Earth sciences.

Answer Key

practice paper for class 8

1. Which of the following produces least friction?

(a) Sliding friction
(b) Rolling friction
(c) Composite friction
(d) Static friction

2. The voice box is also called as

(a) stomach
(b) heart
(c) larynx
(d) mouth

3. Pitch of sound is determined by its

(a) frequency
(b) speed
(c) amplitude
(d) loudness

4. Which of the following is a bad conductor of electricity?

(a) Silver nitrate
(b) Sulphuric acid
(c) Distilled water
(d) Copper sulphate

5. Which of the following is a good conductor?

(a) Cotton
(b) Plastic
(c) Brick
(d) Steel

6. The process of loosening of the soil is called

(a) harvesting
(b) tilling
(c) spraying
(d) weeding

7. The chemical substances rich in nutrients are called

(a) pesticides
(b) weedicide
(c) fertiliser
(d) herbicides

8. The soil matter formed by decayed organic matter is called

(a) humus
(b) fertilizer
(c) biocide
(d) pesticide

9. What is the other name for artificial silk?

(a) Nylon
(b) Acrylic
(c) Polyester
(d) Rayon

10. Petroleum is mainly a mixture of which one of the following class?

(a) Carbohydrates
(b) Carbogens
(c) Hydrocarbons
(d) Alcohols

11. Which one of the following is a petrochemical?

(a) Ammonia
(b) Paraffin wax
(c) Coke
(d) Acetone

12. Which one of the following gases is used in combustion?

(a) Oxygen
(b) Nitrogen
(c) Carbon dioxide
(d) Hydrogen

13. Which zone represents the partial combustion in candle flame?

(a) Outer zone
(b) Inner zone
(c) Lower zone
(d) Middle zone

14. Materials having qualities of both metals and non-metals are

(a) noble metals
(b) alloys
(c) metalloids
(d) none of these

15. The cell formed after fertilisation is called

(a) embryo
(b) zygote
(c) foetus
(d) egg

ANSWER KEY

1.(b)

2.(c)

3.(a)

4.(c)

5.(d)

6.(b)

7.(c)

8.(a)

9.(d)

10.(c)

11.(b)

12.(a)

13.(d)

14.(C)

15.(b)

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