Explore topic-wise MCQs in 7th Class.

This section includes 2637 Mcqs, each offering curated multiple-choice questions to sharpen your 7th Class knowledge and support exam preparation. Choose a topic below to get started.

1251.

In the fig below the length of the object is;

A. 3.4 units                      
B. 3.5 units
C. 3.6 units                      
D. 3.3 units
Answer» C. 3.6 units                      
1252.

In a 100 m race Revanth and Rohan ran at an average speed of \[8.4\,m\,{{s}^{-1}}\]and \[12.2\,m\,{{s}^{-1}}\]respectively. If 12 seconds is the time taken in school records for 100 metre race, then which of the following can be true?

A.  Revanth broke the record.
B.  Rohan broke the record.
C.  Both Revanth and Rohan broke the record.
D.  Neither Revanth nor Rohan broke the record.
Answer» D.  Neither Revanth nor Rohan broke the record.
1253.

Express a speed of 360 cm \[\text{h}{{\text{r}}^{-\text{1}}}\] in km \[{{\text{s}}^{-\text{1}}}\].

A.  \[\text{1}{{0}^{-\text{6}}}\]              
B.  \[\text{1}{{0}^{-\text{5}}}\]
C.  \[\text{3}.\text{6}\times \text{1}{{0}^{-\text{6}}}\]                     
D.  \[\text{36}0\times \text{1}{{0}^{-\text{5}}}\]
Answer» B.  \[\text{1}{{0}^{-\text{5}}}\]
1254.

Study the data given below. Duration (in hour) 6-8 6-8 Distance covered (in km) ? 240 If the average speed of the journey is \[80\,km\,{{h}^{-1}},\] what is the distance travelled during the first 8 hours?

A.  640 km                                
B.  240 km
C.         400 km                
D.         480 km
Answer» D.         480 km
1255.

Motion along a straight line:

A. Circular motion  
B. Rotational motion
C. Rectilinear motion
D.        Oscillatory motion
E. None of these
Answer» D.        Oscillatory motion
1256.

Average velocity is

A.  \[\frac{\text{Total displacement}}{\text{Total time taken}}\]
B.  \[\text{Total displacement }\times \text{ Total time taken}\]
C.  \[\frac{\text{Total time taken}}{\text{Total displacement }}\]
D.  \[\frac{\text{Total distance}}{\text{Total time taken}}\]
Answer» B.  \[\text{Total displacement }\times \text{ Total time taken}\]
1257.

What is the distance covered by a car in 8 h if it is moving with a speed of\[40\,\,km/h\]?

A. 5 km                            
B. 320 km   
C. 300 km 
D.        50 km
E. None of these
Answer» C. 300 km 
1258.

Mohan takes 20 minutes to cover a distance of 3.2 kilometers due north on a bicycle, his velocity in kilometer/hour is

A. 8.1                 
B. 9.6
C. 1.2                              
D. 7.2
Answer» C. 1.2                              
1259.

A car covered a distance of 3 km in 5 minutes. What is the speed with which the car travelled? (i) \[100\,m{{s}^{-1}}\] (ii)\[136\,km\,\,{{h}^{-1}}\] (iii)\[1000\,cm\,\,{{s}^{-1}}\] (iv) \[600\,m\,\,{{\min }^{-1}}\]

A.  Only (i) and (ii)
B.                  Only (ii) and (iii)
C.                  Only (i), (iii) and (iv)
D.                  Only (ii), (iii) and (iv)
Answer» E.
1260.

A train travels 40 km at a uniform speed of 30 km\[{{\text{h}}^{-\text{1}}}\]. Its average speed after traveling another 40 km is 45 km \[{{\text{h}}^{-\text{1}}}\] for the whole journey. Its speed in the second half of the journey is

A. 45kmh \[{{\text{h}}^{-\text{1}}}\]             
B. 90kmh \[{{\text{h}}^{-\text{1}}}\]
C. 60kmh \[{{\text{h}}^{-\text{1}}}\]             
D. None of these
Answer» C. 60kmh \[{{\text{h}}^{-\text{1}}}\]             
1261.

A cyclist travels at an average speed of \[25\,km\,{{h}^{-1}}.\] How long will it take for him to travel a triangular journey through three places \[{{P}_{1}},{{P}_{2}}\]and\[{{P}_{3}}\] as shown in the figure?  

A.  20 minutes        
B.  36 minutes        
C.         1 hour                 
D.         1 hour 20 minutes
Answer» C.         1 hour                 
1262.

Negative value of acceleration signifies

A. the velocity is increasing
B. the velocity is decreasing
C. the velocity remains the same
D. the object comes to rest
Answer» C. the velocity remains the same
1263.

Magnitude of average speed of an object is equal to its average velocity if

A. it is moving in a definite direction
B. its initial and final positions are same
C. it is a uniform motion
D. None of these
Answer» B. its initial and final positions are same
1264.

        The speed of a train is \[20\,m\,{{s}^{-1}}.\]What is the speed in km\[km\,{{h}^{-1}}?\]

A. \[60\text{ }km\text{ }{{h}^{-1}}\]            
B. \[40\text{ }km\text{ }{{h}^{-1}}\]            
C.        \[~72\text{ }km\text{ }{{h}^{-1}}\]     
D.        \[20\text{ }km\text{ }{{h}^{-1}}\]                            
Answer» D.        \[20\text{ }km\text{ }{{h}^{-1}}\]                            
1265.

Study the given distance-time graph for three cars P, Q and R in a race. Which of the three cars win the race?

A.  Car P                    
B.  Car Q   
C.  Car R                    
D.  Both Q and R    
Answer» B.  Car Q   
1266.

If an object covers equal distances in equal intervals of time, it is said to be in

A. circular motion
B. uniform motion
C. oscillatory motion
D. non-uniform motion
Answer» C. oscillatory motion
1267.

A person is seated in a train under motion. With reference to which of the following surroundings is he at rest?

A.  Person watching him from the front seat
B.  Person watching him from the ground
C.  Trees on the ground
D.  A car moving in the opposite direction to the train
Answer» B.  Person watching him from the ground
1268.

The rate of change of displacement with time is called

A. Speed                         
B. Velocity
C. Both of these    
D. None of these
Answer» C. Both of these    
1269.

Sunil and Rohit start at one end of a street, the origin and run to the other end, then head back. On the way back, Sunil is ahead of Rohit. Which statement is correct about the distances run and the displacements from the origin before reaching the origin?

A. Sunil has run a greater distance and his displacement is greater than Rohit's.                          
B. Rohit has run a greater distance and his displacement is greater than Sunil's.                         
C. Sunil has run a greater distance but his displacement is lesser than Rohit's.
D. Rohit has run a greater distance but his displacement is lesser than Sunil's.
Answer» D. Rohit has run a greater distance but his displacement is lesser than Sunil's.
1270.

A simple pendulum takes 55 s to complete 50 oscillations. What is the time- period of this pendulum?

A. 3.2 s                            
B. 2.1 s
C. 1.1 s                
D.        0.9 s
E. None of these
Answer» D.        0.9 s
1271.

An object has travelled 10 km in 15 minutes, its displacement will be

A. 10 km                         
B. zero
C. Less than 10 km         
D. All of the above
Answer» E.
1272.

The diagram below shows some passengers sitting in the moving bus and a person, a tree and a house standing outside. With reference to the diagram, choose the correct option. (i)  Fora passenger sitting within the bus, the tree and house appear to be moving in backward direction relative to a co-passenger.                       (ii) For a person standing on the road, the bus seems to be moving in the forward direction relative to tree and house. (iii) For a passenger sitting within the bus, a person standing on the road seems to be moving in forward direction relative to a co-passenger.

A.                       Only (i) and (ii)            
B. Only (ii) and (iii)
C. Only (i) and (iii)
D. All (i), (ii) and (iii)
Answer» B. Only (ii) and (iii)
1273.

Which of the following travels the fastest?

A.  Cheetah                             
B.  Wind   
C.         Sound                 
D.         Light
Answer» E.
1274.

Displacement is the

A. shortest distance between initial and final positions
B. actual distance between initial and final positions
C. distance traveled by the object
D. distance traveled by the object in a unit time
Answer» B. actual distance between initial and final positions
1275.

Which of the following defines number of vibration per second?

A. Speed               
B. Distance
C. Frequency         
D.        Motion
E. None of these
Answer» D.        Motion
1276.

A velocity-time graph gives (i) the distance (ii) the displacement (iii) the acceleration (iv) the speed

A. (i) and (ii) only            
B. (ii) and (iii) only
C. (i) and (iii) only           
D. (i), (ii) and (iii)
Answer» C. (i) and (iii) only           
1277.

Study the distance-time graph of a toy car given here and choose the incorrect statement from the following.           

A. The toy car is fastest during first 10 seconds.                     
B. The toy car is slowest in between 10 and 20 seconds.
C. Distance travelled during last 10 seconds is 3 m.              
D. Total distance covered by the toy car is 10 m.                        
Answer» E.
1278.

Which of the following is given incorrectly

A.  Speedometer   : Speed
B.  Odometer          : Odour
C.  Anemometer   : Wind speed
D.  Stopwatch         : Time
Answer» C.  Anemometer   : Wind speed
1279.

Which of the following is correct for measuring time by using stopwatch?

A. Used to measure total distance travelled.
B. Used to measure total speed.
C. Used to measure correct time.
D. Used to measure exact time during the event.
E. None of these
Answer» E. None of these
1280.

The acceleration of a car that speeds up from 12 meters per second to 30 meters per second in 15 seconds is

A.  \[\text{2}.\text{4 m}/{{\text{s}}^{\text{2}}}\]                  
B.  \[\text{1}.\text{2 m}/{{\text{s}}^{\text{2}}}\]
C.  \[\text{2 m}/{{\text{s}}^{\text{2}}}\]                    
D.  \[\text{5}.\text{2 m}/{{\text{s}}^{\text{2}}}\]
Answer» C.  \[\text{2 m}/{{\text{s}}^{\text{2}}}\]                    
1281.

Which of the following shows motion in a straight line?

A.  A bullet shot from a gun
B.  A tree swaying
C.  Child on a merry-go-round
D.  The motion of strings in a guitar
Answer» B.  A tree swaying
1282.

____ is the rate of change of position of an object.

A. Acceleration                  
B. Speed
C. Motion 
D.        Distance
E. None of these
Answer» C. Motion 
1283.

A graph is plotted showing the velocity of a car as a function of time. If the graph is a straight line, it means that

A. the car started at rest
B. acceleration was constant
C. acceleration was increasing
D. velocity was constant
Answer» E.
1284.

Match the column I with column II and select the correct option from the codes given below. Column I Column II (a) Object moving with variable speed               (i) (b) Object moving is at rest            (ii) (c) The graph which is not possible              (iii) (d) Object moving with constant speed                     (iv)

A. (a)-(i),   (b)-(ii),   (c)-(iii),  (d)-(iv)
B. (a)-(ii),  (b)-(iii),  (c)-(iv),  (d)-(i)
C. (a)-(iii),  (b)-(ii),  (c)-(i),    (d)-(iv)
D. (a)-(iv),  (b)-(i),   (c)-(ii),   (d)-(iii)
Answer» D. (a)-(iv),  (b)-(i),   (c)-(ii),   (d)-(iii)
1285.

In a marathon, Varun runs 800 metres in 2 minutes 40 seconds. What is his speed in metres per second?

A. \[4\,m\,{{s}^{-1}}\]                        
B. \[5\,m\,{{s}^{-1}}\]        
C.        \[200\,m\,{{s}^{-1}}\]                   
D.        \[1600\,m\,{{s}^{-1}}\]
Answer» C.        \[200\,m\,{{s}^{-1}}\]                   
1286.

Which of the following is an advantage of distance-time graph?

A. Variation of distance travelled by an object with time can be seen easily.
B. We can find distance moved by the object at any point of time.
C. We can find speed of an object.
D. All the above
E. None of these
Answer» E. None of these
1287.

Why is the average speed of a moving object same as the actual speed of the moving object in case of uniform motion in a straight line?

A. The object covers equal distances in same intervals of time
B. The object covers equal distances even in very small intervals of time
C. Both the above are correct
D. None of the above is correct.
Answer» B. The object covers equal distances even in very small intervals of time
1288.

Which of the following is the most suitable device for measuring the time the runners take in a 100 m marathon?                        

A.  Hourglass                          
B.  Stopwatch        
C.         Pendulum         
D.         Sun dial                              
Answer» C.         Pendulum         
1289.

Which one of the following is an example of uniform motion?

A. A car is moving on road having traffic,
B. A train entering a railway station.       
C. Motion of a butterfly.   
D. An aeroplane flying at a speed of \[750\text{ }km\text{ }{{h}^{-1}}\] towards north,         
Answer» E.
1290.

It is a part of wall clock and performs oscillatory motion. Its time period is fixed. It is

A. a pendulum                 
B. bob of a pendulum
C. pendulum clock
D. None of these
Answer» B. bob of a pendulum
1291.

In the given figure, two cars coming from town P are traveling with a speed of\[65\text{ }km\text{ }{{h}^{-1}}\]. When they reach the cross road, one of the car turns towards town Q whereas the other continues forward towards town R. Both continue to move with the same speed of \[65\text{ }km\text{ }{{h}^{-1}}\].  Which of the following options is correct for given statements?(i) Both cars have same velocities even if the car turns towards town 0.(ii) Two bodies have same velocities if they are moving with same speed in different directions, 

A. Both (i) and (ii) are correct and (ii) is the correct explanation of (i).   
B. Both (i) and (ii) are correct but (ii) is not the correct explanation of (i).          
C. Only (i) is correct.       
D. Neither (i) nor (ii) is correct.   
Answer» E.
1292.

A graph is shown below. What does the area of the shaded portion in the graph represent?

A.  Distance                             
B.  Speed 
C.         Time                    
D.         Uniform motion                             
Answer» B.  Speed 
1293.

DIRECTIONS: On the basis of following diagram/picture answer the questions given below: Look at the distance-time graphs of two moving vehicles and select the correct statement     

A. Both the vehicles are moving with same constant speed
B. (i) is moving with constant speed and (ii) is moving non-uniformly
C. (ii) is moving with constant speed and (i) is moving non-uniformly
D. None of the above is correct
Answer» E.
1294.

DIRECTIONS: On the basis of following diagram/picture answer the questions given below: A racing car is fitted with an electronic monitoring system. Data from the car are used to plot a speed-time graph for part of the race. The graph is displayed on a computer screen. The graph covers a period of time when the car is first at rest, then

A. Moving with uniform speed and then moving with uniform acceleration.
B. Moving with uniform speed and then moving with non-uniform acceleration.
C. Moving with uniform acceleration and then moving with non-uniform acceleration.
D. Moving with non-uniform acceleration and then moving with uniform acceleration.
Answer» E.
1295.

DIRECTIONS: On the basis of following diagram/picture answer the questions given below: In the picture is shown a time-distance graph of two moving bodies A and B. Select the correct statement.

A. A is moving faster than B
B. A is moving slower than B
C. B is always 20 m behind A
D. B is always 20 m ahead of A
Answer» E.
1296.

DIRECTIONS: On the basis of following diagram/picture answer the questions given below: Study the graph below showing the position of 3 runners, Pooja, Mayur and Hemant at two different times.                      Who has run the fastest in between the 2nd and the 4th minute?

A. Pooja
B. Mayur
C. Hemant
D. Both Pooja and Hemant
Answer» B. Mayur
1297.

In the given figures, there are two watches X and Y. Watch X represents an hour and a minute hand and watch Y represents an hour, a minute and a second hand.Which of the following statements is/are incorrect for these two watches?            (i) Time interval of 1h 15 min can be measured by watch X only.(ii) Time interval of 2 min 2 s can be measured by watch Y only.(iii) Time 3:15:20 can be shown by both the watches X and Y. 

A. Only (i) and (ii) 
B. Only (i) and (iii)
C. Only (iii)        
D. Only (ii)
Answer» C. Only (iii)        
1298.

A car travels with a speed of \[50\,km\,{{h}^{-1}}\]in the 1st hour and \[100\,km\,{{h}^{-1}}\] in the 2nd hour. What is the total distance covered by the car in the two hours?

A.  50km                                   
B.  100km 
C.         150 km                
D.         200 km                
Answer» D.         200 km                
1299.

DIRECTIONS: On the basis of following diagram/picture answer the questions given below: The graph given here shows the motion of four runners- P, Q, R and S in a 5 km marathon. Whose motion is the fastest?

A. P                     
B. Q   
C. R                                 
D. S
Answer» B. Q   
1300.

DIRECTIONS: On the basis of following diagram/picture answer the questions given below: One oscillation of a swinging pendulum occurs when the bob moves from X to Y and back to X again. Using a stopwatch, which would be the most accurate way to measure the time for one oscillation of the pendulum?

A. Time 20 oscillations and multiply by 20.
B. Time 20 oscillations and divide by 20.
C. Time one oscillation.
D. Time the motion from X to Y, and double it.
Answer» C. Time one oscillation.