Explore topic-wise MCQs in 8th Class.

This section includes 1185 Mcqs, each offering curated multiple-choice questions to sharpen your 8th Class knowledge and support exam preparation. Choose a topic below to get started.

151.

By taking \[\pi =3.141\]and \[\sqrt{2}=1.414,\]evaluate\[\frac{2\pi +3\sqrt{2}}{5}\] upto three places of decimals.

A.  2.104                         
B.  2.105             
C.  3.428             
D.       4.646
Answer» C.  3.428             
152.

If 'a' and 'b' are two non-negative real numbers, which of the following is true?

A.  \[\sqrt{a}+\sqrt{b}=\sqrt{a+b}\]
B.      \[\sqrt{a}-\sqrt{b}=\sqrt{a-b}\]         
C. \[\sqrt{a}-\sqrt{b}\ne \sqrt{a-b}\]      
D. \[\sqrt{a}+\sqrt{b}=\sqrt{ab}\]        
Answer» D. \[\sqrt{a}+\sqrt{b}=\sqrt{ab}\]        
153.

Shanker's family consumed\[3\frac{1}{2}\text{kg}\]sugar in the first 15 days of a month. For the next 15 days they consumed\[3\frac{3}{4}\text{kg}\]sugar. How much sugar did they consume for the whole month?

A. \[5\frac{1}{2}kg\]      
B.       \[7\frac{1}{4}kg\]     
C.  \[6\frac{1}{3}kg\]     
D.      \[4\frac{3}{4}kg\]
Answer» C.  \[6\frac{1}{3}kg\]     
154.

Which of the following conclusions, is true about the statement in the box?

A.  The statement is always true.
B.  The statement is true when "x" is negative.
C.  The statement is true when \[x=0.\]
D.  The statement is never true.
Answer» D.  The statement is never true.
155.

Find the decimal equivalent of \[\frac{9}{11}\].

A. \[0.\overline{61}\]                              
B. \[~0.\overline{71}\]               
C.      \[0.\overline{81}\]                  
D.      \[~0.\overline{91}\]               
Answer» D.      \[~0.\overline{91}\]               
156.

Direction: Study the information given below and answer the question that follow: (i) A, B, C, D, E and F are six students in a class. (ii) B and C are shorter than F but heavier than A. (iii) D is heavier than B and taller than C. (iv) E is shorter than D but taller than F. (v) F is heavier than D. (vi) A is shorter than E but taller than F. Which of the following statements is true for F as regards height and weight?

A.  He is lighter than E and taller than E.
B.  He is heavier than B and taller than E.
C.  He is heavier than B and C but shorter than D.
D.  He is lighter than E and also shorter than E.
Answer» C.  He is heavier than B and C but shorter than D.
157.

Direction: Study the information given below and answer the question that follow: (i) A, B, C, D, E and F are six students in a class. (ii) B and C are shorter than F but heavier than A. (iii) D is heavier than B and taller than C. (iv) E is shorter than D but taller than F. (v) F is heavier than D. (vi) A is shorter than E but taller than F. Which of the following groups of friends is shorter than A?

A.  B, C only                     
B.  D, B, C only
C.  E, B, C only        
D.      F, B/ C only
Answer» E.
158.

Direction: Study the information given below and answer the question that follow: (i) A, B, C, D, E and F are six students in a class. (ii) B and C are shorter than F but heavier than A. (iii) D is heavier than B and taller than C. (iv) E is shorter than D but taller than F. (v) F is heavier than D. (vi) A is shorter than E but taller than F. Who is third from the top when they are arranged in descending order of heights?

A.  A        
B.       B        
C.  C                                
D.  E
Answer» B.       B        
159.

Direction: Read the following statements carefully to answer these questions: I. X is older than L,        II. M and N are of equal age. III. Z is the youngest.       IV. Y is younger than N. V.   Y is older than X. Which set of statements proves that X is younger than M?

A.  I, 11, IV          
B.       11, IV, V  
C.  I, IV, V            
D.       None of these
Answer» C.  I, IV, V            
160.

Direction: Read the following statements carefully to answer these questions: I. X is older than L,        II. M and N are of equal age. III. Z is the youngest.       IV. Y is younger than N. V.   Y is older than X. Which statement(s) is/are not required to prove that L is younger than M?

A.  III only            
B.       III and IV
C.  IV and V         
D.       III and V
Answer» B.       III and IV
161.

Direction: Read the following statements carefully to answer these questions: I. X is older than L,        II. M and N are of equal age. III. Z is the youngest.       IV. Y is younger than N. V.   Y is older than X. Which statement(s) indicate(s) that N is older than Z?

A.  II and III                      
B.  III only
C.  III and IV            
D.       None of these
Answer» C.  III and IV            
162.

Direction: Study the given information carefully and answer the questions that follows: (i) Six friends P, Q, R, S, T and U are members of a club and play a different game of Football, Cricket, Tennis, Basketball, Badminton and Volleyball. (ii) T, who is taller than P and S, plays Tennis. (iii) The tallest among them plays Basketball. (iv) The shortest among them plays Volleyball. (v) Q and S neither play Volleyball nor Basketball. (vi) R plays Volleyball. (vii) T is between Q who plays Football and P in order of height. What does S play?

A.  Cricket               
B.    Badminton
C.  Football              
D.    Either Cricket or Badminton
Answer» E.
163.

Direction: Study the given information carefully and answer the questions that follows: (i) Six friends P, Q, R, S, T and U are members of a club and play a different game of Football, Cricket, Tennis, Basketball, Badminton and Volleyball. (ii) T, who is taller than P and S, plays Tennis. (iii) The tallest among them plays Basketball. (iv) The shortest among them plays Volleyball. (v) Q and S neither play Volleyball nor Basketball. (vi) R plays Volleyball. (vii) T is between Q who plays Football and P in order of height. Which of the following statements is not true?

A.  P is shorter than R.      
B.  Q is taller than S.
C.  S is taller than R.
D.          T is taller than R.
Answer» B.  Q is taller than S.
164.

Direction: Study the given information carefully and answer the questions that follows: (i) Six friends P, Q, R, S, T and U are members of a club and play a different game of Football, Cricket, Tennis, Basketball, Badminton and Volleyball. (ii) T, who is taller than P and S, plays Tennis. (iii) The tallest among them plays Basketball. (iv) The shortest among them plays Volleyball. (v) Q and S neither play Volleyball nor Basketball. (vi) R plays Volleyball. (vii) T is between Q who plays Football and P in order of height. Who will be at the third place if they are arranged in the descending order of their heights?

A.  Q       
B.       P       
C.  T                    
D.       S
Answer» D.       S
165.

Direction: Study the given information carefully and answer the questions that follows: (i) Six friends P, Q, R, S, T and U are members of a club and play a different game of Football, Cricket, Tennis, Basketball, Badminton and Volleyball. (ii) T, who is taller than P and S, plays Tennis. (iii) The tallest among them plays Basketball. (iv) The shortest among them plays Volleyball. (v) Q and S neither play Volleyball nor Basketball. (vi) R plays Volleyball. (vii) T is between Q who plays Football and P in order of height. Who among them is taller than R but shorter than P?

A.  Q        
B.       T       
C.  U                    
D.       S
Answer» E.
166.

Direction: Read the following information carefully and answer the questions given below it. (i) A, B, C, D an E are five friends. (ii) B is elder to E, but not as tall as C. (iii) C is younger to A, and is taller to D and E. (iv) A is taller to D, but younger than E. (v) D is elder to A but is shortest in the group. If a selection is to be made among them who would be relatively older and also taller, who among them should be chosen?

A.  A                    
B.       B       
C.  C                    
D.       D
Answer» C.  C                    
167.

Direction: Read the following information carefully and answer the questions given below it. (i) A, B, C, D an E are five friends. (ii) B is elder to E, but not as tall as C. (iii) C is younger to A, and is taller to D and E. (iv) A is taller to D, but younger than E. (v) D is elder to A but is shortest in the group. Which of the following statements is correct about B? (i) B is not the tallest. (ii) B is shorter to E. (iii) When they are asked to stand in ascending order with respect to their heights, B is in the middle.

A. Only (i) is correct        
B.  Only (i) and (ii) are correct
C.  All are correct     
D.        All are incorrect
Answer» B.  Only (i) and (ii) are correct
168.

Direction: Read the following information carefully and answer the questions given below it. (i) A, B, C, D an E are five friends. (ii) B is elder to E, but not as tall as C. (iii) C is younger to A, and is taller to D and E. (iv) A is taller to D, but younger than E. (v) D is elder to A but is shortest in the group. Which of the following pairs of students is elder to D?

A.  BA                   
B.  BC
C.  BE                   
D.  Cannot be determined
Answer» E.
169.

Direction: Read the following information carefully and answer the questions given below it. (i) A, B, C, D an E are five friends. (ii) B is elder to E, but not as tall as C. (iii) C is younger to A, and is taller to D and E. (iv) A is taller to D, but younger than E. (v) D is elder to A but is shortest in the group. Who among the following is the eldest?

A.  A                                
B.  B        
C.  C                    
D.       B or D
Answer» E.
170.

Direction: Read the following statements carefully to answer these questions: I. X is older than L,        II. M and N are of equal age. III. Z is the youngest.       IV. Y is younger than N. V.   Y is older than X. Which two of the above statements indicate that Y is older than L?

A.  I and IV                       
B.  IV and V
C.  I and V               
D.       III and IV
Answer» D.       III and IV
171.

What should be added to \[1+2x-3{{x}^{2}}\]to get\[{{x}^{2}}-x-1?\]

A. \[~2{{x}^{2}}-\text{ }x+2\]        
B.       \[~4{{x}^{2}}-3x-2\]       
C. \[{{x}^{2}}-3x-2\]          
D.         \[2{{x}^{2}}-3x-2\]         
Answer» C. \[{{x}^{2}}-3x-2\]          
172.

Find the value of \[{{(98)}^{2}}.\]

A.  9608                                     
B.  9680                     
C.         9604                     
D.         9898
Answer» D.         9898
173.

Which of the following are NOT polynomials? (i) \[2{{x}^{2}}+12\sqrt{x}-5\] (ii) \[3{{x}^{8}}-10{{x}^{2}}+6{{x}^{5}}-5x-2\] (iii)  \[7{{x}^{4}}-3{{x}^{3}}+\frac{10}{{{x}^{2}}}-6x+4\] (iv) \[8{{x}^{4}}-6{{x}^{2}}+10x-7\]

A.  Only (i) and (ii)                
B.  Only (ii) and (iii)
C.                         Only (i) and (iv)  
D.               Only (ii) and (iv)              
Answer» E.
174.

lf\[x+y=7\]and \[xy=12\]find the value of \[{{x}^{2}}+{{y}^{2}}.\]

A.  24                         
B.         25        
C.         26        
D.         23
Answer» C.         26        
175.

Find the volume of a cuboid \[2{{x}^{2}}y\,m\]long, \[3{{y}^{2}}z\,m\]broad and \[5x{{z}^{2}}m\]high.

A.  \[24{{x}^{2}}{{y}^{2}}{{z}^{2}}\]                              
B.           \[30{{x}^{3}}{{y}^{3}}{{z}^{3}}\]               
C.            \[32{{x}^{2}}{{y}^{2}}{{z}^{2}}\]                              
D.           \[25{{x}^{2}}{{y}^{3}}{{z}^{3}}\]               
Answer» C.            \[32{{x}^{2}}{{y}^{2}}{{z}^{2}}\]                              
176.

What is the simplified form of \[\frac{{{x}^{2}}+8x+16}{x+3}+\frac{2x+8}{{{x}^{2}}-9}?\]

A.  \[\frac{2{{(x+4)}^{2}}}{(x-3){{(x+3)}^{2}}}\]       
B.            \[\frac{2(x+3)(x-3)}{x+4}\]        
C.            \[\frac{(x+4)(x-3)}{2}\]
D.            \[\frac{(x+4){{(x-3)}^{2}}}{2(x+3)}\]
Answer» D.            \[\frac{(x+4){{(x-3)}^{2}}}{2(x+3)}\]
177.

Find the value of \[{{(10.1)}^{2}}.\]

A.  102.10                 
B.            120.01                 
C.                         120.10                 
D.            102.01
Answer» E.
178.

When is the expression \[f(x)={{a}_{0}}{{x}^{n}}+{{a}_{1}}{{x}^{n-1}}+{{a}_{2}}{{x}^{n-2}}+....+{{a}_{n-1}}x+{{a}_{n}}\]a polynomial of degree n?

A.  Only when n is a positive integer.
B.            If n is a negative integer and \[{{a}_{n}}\ne 0.\]
C.            If n is a positive integer and\[{{a}_{0}}\ne 0.\]
D.            If n is any integer.
Answer» C.            If n is a positive integer and\[{{a}_{0}}\ne 0.\]
179.

Find the value of \[\frac{pq-{{p}^{3}}q}{1-{{p}^{2}}}.\]

A.  q                                           
B.            \[pq\]                 
C.           \[q(1+p)\]                          
D.           \[1-{{p}^{2}}\]  
Answer» C.           \[q(1+p)\]                          
180.

What is the simplest form of \[1-[1-1-(1-1+x)]?\]

A. \[2-x\]                 
B.           \[~1\text{ }+\text{ }x\]                                
C.           \[~1-x\]                               
D.           \[2+x\]                
Answer» C.           \[~1-x\]                               
181.

Find the quotient when\[64{{a}^{2}}{{b}^{2}}{{c}^{3}}\]is divided by \[-16{{a}^{2}}{{b}^{2}}{{c}^{2}}.\]

A. \[{{a}^{2}}c\]                                    
B.           \[-2{{a}^{2}}c\]                
C.           \[3{{a}^{2}}c\]                                  
D.           \[-4{{a}^{2}}c\]
Answer» E.
182.

Find the remainder obtained when \[{{x}^{3}}-3{{x}^{2}}-2x-5\]is divided by \[x+2.\]

A.  -5                          
B.         5            
C.         0            
D.         -21
Answer» E.
183.

If \[A=5{{x}^{3}}-3{{x}^{2}}+2x-5\]and \[B=3{{x}^{3}}-{{x}^{2}}-x+2,\]find the value of \[A-B.\]

A. \[8{{x}^{3}}-4{{x}^{2}}+x-3\]      
B.           \[2{{x}^{3}}+{{x}^{2}}-3x+7\]     
C.            \[8{{x}^{3}}-4{{x}^{2}}+x-3\]     
D.           \[2{{x}^{3}}-2{{x}^{2}}+3x-7\]
Answer» E.
184.

Find the perimeter of the following triangle.

A. \[6x+3y+2z\]                     
B.           \[4x-y-2z\]                         
C.           \[5x-3y-2z\]                       
D.           \[7x-10y+7z\]                   
Answer» E.
185.

Find the value of\[5{{a}^{2}}(a-2)-8(a+5)+16,\]when \[a=2.\]

A.  40                         
B.            -40                        
C.            0                            
D.            20
Answer» D.            20
186.

In the product\[(x+1)(x+2)(x+3),\] what is the coefficient of\[x?\]

A.  6                            
B.            12                         
C.            11                         
D.            10
Answer» D.            10
187.

The length and width of a rectangle are d cm and (d - 8) cm respectively. What is the perimeter of the rectangle?

A.  4d - 16 cm                          
B.            2d - 8 cm                            
C.            2d + 8 cm                           
D.            8d - 18 cm          
Answer» B.            2d - 8 cm                            
188.

Find the value of \[37\times 43\].

A.  1591                                     
B.            1221                     
C.            3191                                     
D.            2021
Answer» B.            1221                     
189.

Which is the correct factorization of \[{{x}^{2}}-5x-14?\]

A. \[(x-2)(x-7)\]                    
B.           \[(x-2)(x+7)\]                   
C.           \[(x+2)(x-7)\]                   
D.           \[(x-1)(x+14)\]
Answer» D.           \[(x-1)(x+14)\]
190.

Find the area of a rectangular field (a + 7) m long and (a - 2) m wide.

A. \[\text{(}{{a}^{2}}-5a-14\text{) }sq.\text{ }m\]         
B. \[\text{(}{{a}^{2}}+9a+14\text{) }sq.\text{ }m\]
C. \[\text{(}{{a}^{2}}-9a-14\text{) }sq.\text{ }m\]
D.           \[({{a}^{2}}+5a-14)\text{ }sq.\text{ }m\]
Answer» E.
191.

What is the simplified form of \[\frac{4}{11}(66f+44)+\frac{3}{11}(33f-33)?\]

A.  22f + 8                                 
B.  11f - 3                  
C.  33f + 7                 
D.         44f + 8                 
Answer» D.         44f + 8                 
192.

Simplify \[(1+x)(1+{{x}^{2}})(1+{{x}^{4}})(1+{{x}^{8}})(1-x).\]

A. \[1+{{x}^{16}}\]                               
B. \[1-{{x}^{16}}\]
C.        \[{{x}^{16}}-1\]
D.        \[{{x}^{8}}+1\]
Answer» C.        \[{{x}^{16}}-1\]
193.

What should be taken away from \[3{{x}^{2}}-4{{y}^{2}}+5xy+20\]to get \[-{{x}^{2}}-{{y}^{2}}+6xy-20?\]

A. \[2{{x}^{2}}-5{{y}^{2}}+11xy+40\]           
B.  \[4{{x}^{2}}-3{{y}^{2}}-xy+40\]
C. \[2{{x}^{2}}-3{{y}^{2}}-xy+20\]
D. \[4{{x}^{2}}-3{{y}^{2}}-11xy-40\]
Answer» C. \[2{{x}^{2}}-3{{y}^{2}}-xy+20\]
194.

Name a polynomial containing two terms.

A.  Monomial                         
B.  Binomial
C.  Trinomial            
D.         Biquadratic polynomial
Answer» C.  Trinomial            
195.

Find the factors A and B of \[{{x}^{2}}+10x+21\]in the form AB.

A.  (x - 3) (x - 7)        
B.           (x + 3) (x + 7)                    
C.  (x - 3) (x + 7)       
D.            (x + 3) (x,-7)                     
Answer» C.  (x - 3) (x + 7)       
196.

Find the value of \[\frac{{{(469+174)}^{2}}-{{(469-174)}^{2}}}{469\times 174}.\]

A.  2                            
B.  4            
C.  295      
D.         643
Answer» C.  295      
197.

Find the value of \[{{(175+125)}^{2}}-4\times 175\times 125.\]

A.  1225                                     
B.  2500                     
C.         1600                     
D.         2025                     
Answer» C.         1600                     
198.

A rectangular field is 120 m in length and 60 m in breadth. Two paths of 10 m width each and parallel to the length and breadth are laid in its centre. What is the total area of the path?

A. 1.7 area
B. \[1700\,{{m}^{2}}\]
C. \[1.7\,m{{m}^{2}}\]
D. \[1800\,{{m}^{2}}\]
Answer» C. \[1.7\,m{{m}^{2}}\]
199.

If the perimeter of an isosceles right triangle is \[(6+3\sqrt{2})m,\] find its area.

A. \[3.2\text{ }{{m}^{2}}\]
B. \[4.8\text{ }{{m}^{2}}\]
C. \[~4.5\text{ }{{m}^{2}}\]
D. \[~6.4\text{ }{{m}^{2}}\]
Answer» D. \[~6.4\text{ }{{m}^{2}}\]
200.

The radius of a wheel is 0.25 m. How many revolutions does it make to travel a distance of 11 km?

A. 8000
B. 9000
C. 7000
D. 6000
Answer» D. 6000