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.

1151.

Suppose you are in a car and it is raining heavily with thunderstorms. Then what is the best way to protect yourself from a possible thunder storm fall?

A. Remain in the car
B. Get out of the car and take cover under the car
C. Run to a nearby tree
D. Get out and stand under an electric pole
Answer» B. Get out of the car and take cover under the car
1152.

This phenomenon is quite frequent in India and it may form within a cyclone. It is a

A. Cyclone                      
B. hurricane
C. Tornado        
D. typhoon
Answer» D. typhoon
1153.

Why does warm air rise up?

A. It is heavier than cold air
B. It is lighter than cold air
C. Warm air occupies less space than cold air
D. None of these
Answer» C. Warm air occupies less space than cold air
1154.

Typhoon is essentially a

A. cyclone           
B. thunderstorm
C. tornado           
D. None of these
Answer» B. thunderstorm
1155.

Which of the following help in development of a cyclone?

A. Wind speed                 
B. Wind direction
C. Humidity                    
D. All of the above
Answer» E.
1156.

Pick the odd one out of the following

A. Monsoon    
B. Typhoon
C. Hurricane                   
D. Cyclone
Answer» B. Typhoon
1157.

__________ causes all the changes in weather?

A. Wind                           
B. Rain
C. Sun            
D. None of these
Answer» D. None of these
1158.

A tornado is

A. uneven heating between two regions
B. a violent, twisting funnel of wind
C. strong circulatory winds in the tropical region
D. None of these
Answer» C. strong circulatory winds in the tropical region
1159.

During a cyclone air moves from

A. region of high pressure to low pressure
B. region of low pressure to high pressure
C. region of low velocity to high velocity
D. region of high pressure to low velocity
Answer» B. region of low pressure to high pressure
1160.

On blowing air into balloon, the size of the balloon increases because

A. air exerts pressure
B. warm air rises up
C. air is stronger than balloon
D. None of these
Answer» B. warm air rises up
1161.

Which of the following is correct about destruction caused by cyclones?

A. Severe loss of life and property
B. Reduces fertility of soil
C. Both of the above
D. None of these
Answer» D. None of these
1162.

A thunderstorm is accompanied by

A. lightning                      
B. sound
C. lightning and sound    
D. cyclone
Answer» D. cyclone
1163.

The safest way to protect yourself from lightning is to __________

A. start running in an open field
B. keep yourself covered with an umbrella
C. take shelter under a tree
D. squat low on the ground
Answer» E.
1164.

The pressure is exerted by air in ________

A. upward direction only
B. downward direction only
C. side ways only
D. All the directions
Answer» E.
1165.

__________is used to measure wind speed?

A. Barometer       
B. Manometer
C. Anemometer   
D. Speedometer
Answer» D. Speedometer
1166.

_________ maximum temperature of the day is observed.

A. At noon
B. In the afternoon
C. Either at noon or in the afternoon
D. None of these
Answer» C. Either at noon or in the afternoon
1167.

DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage-2 A walker follows the path from A to E (figure) over a 80s time interval. Now answer the following questions? What is the walker's average velocity between points B and D?

A. 16 m/s                         
B. 8 m/s
C. 0 m/s         
D. 1 m/s
Answer» D. 1 m/s
1168.

DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage-2 A walker follows the path from A to E (figure) over a 80s time interval. Now answer the following questions? What is the walker's average velocity between A and E?

A. 16 m/s                         
B. 8 m/s
C. m/s                  
D. 1 m/s
Answer» E.
1169.

DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage-2 A walker follows the path from A to E (figure) over a 80s time interval. Now answer the following questions? What is the walker's total displacement between A and E?

A. 160m                          
B. 80m
C. 20m               
D. 40m
Answer» C. 20m               
1170.

DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage-2 A walker follows the path from A to E (figure) over a 80s time interval. Now answer the following questions? What total distance does the walker cover between A and E?

A. 160m        
B. 80m
C. 20m               
D. 40m
Answer» B. 80m
1171.

DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage-1 What is the average speed of die squirrel between 8 s and 10 s.?

A. 0.4 m/s                        
B. 1 m/s
C. 2 m/s                           
D. 4 m/s
Answer» C. 2 m/s                           
1172.

DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage-1 Which of the following describes the motion of the squirrel between 5 s and 8 s?

A. The squirrel's speed increased
B. The squirrel's speed decreased
C. The squirrel's speed did not change
D. The squirrel moved backward
Answer» D. The squirrel moved backward
1173.

DIRECTION: Match column-I with Column-II and select the correct answer using the code given below the columns.   Column - I Column - II (A) Decreasing acceleration at steady rate (p)   (B) A body at rest (q) (C) Uniform velocity (r) (D) Constant motion (s) (t)

A. A\[\to \](p, q), B\[\to \](r), C\[\to \](t), D\[\to \](s)
B. A\[\to \](p), B\[\to \](q, r), C\[\to \](s), D\[\to \](t)
C. A\[\to \](r), B\[\to \](q), C\[\to \](p, s), D\[\to \](t)
D. A\[\to \](s), B\[\to \](q), C\[\to \](p), D\[\to \](r, t)
Answer» B. A\[\to \](p), B\[\to \](q, r), C\[\to \](s), D\[\to \](t)
1174.

All of the following is a unit of speed except

A. km/h
B. m/s
C. miles per hour
D. Pounds per square inch
Answer» E.
1175.

Study the graph given below. What can be concluded about the speed in the above graph?                

A.                                          It goes on increasing.                
B.                  It decreases first and then becomes zero.                
C.  It increases first and then becomes constant but not zero.
D.  It decreases first and then becomes constant but not zero.
Answer» C.  It increases first and then becomes constant but not zero.
1176.

DIRECTION: Match column-I with Column-II and select the correct answer using the code given below the columns.                                            Column - I Column - II (A) Physical quantity whose unit is cm \[{{s}^{-2}}\] in CGS system (p)  Linear motion (B) Negative acceleration (q)   Zero Motion exhibited by body moving in a straight line (r)   Distance (D) Area under a speed time graph (s)   Acceleration (E) Velocity of an upward throwing body at the pick point (t)   Retardation

A. A\[\to \] (q), B\[\to \] (s), C\[\to \] (t), D\[\to \] (p), E\[\to \] (r)
B. A\[\to \] (s), B\[\to \] (t), C\[\to \] (p), D\[\to \] (r), E\[\to \] (q)
C. A\[\to \] (t), B\[\to \] (q), C\[\to \] (s), D\[\to \] (t), E\[\to \] (r)
D. A\[\to \] (r), B\[\to \] (s), C\[\to \] (q), D\[\to \] (p), E\[\to \] (r)
Answer» C. A\[\to \] (t), B\[\to \] (q), C\[\to \] (s), D\[\to \] (t), E\[\to \] (r)
1177.

DIRECTION: Match column-I with Column-II and select the correct answer using the code given below the columns. Column - I Column - II (A) Days (p) Second (B) Months (q) m/s (C) Time (r) Meter (D) Speed (s) The time from one sunrise to the next (E) Distance (t) One new moon to the next.

A. A\[\to \] (q), B\[\to \] (p), C\[\to \] (s), D\[\to \] (t), E\[\to \] (r)
B. A\[\to \] (p), B\[\to \] (s), C\[\to \] (r), D\[\to \] (q), E\[\to \] (t)
C. A\[\to \] (s), B\[\to \] (t), C\[\to \] (p), D\[\to \] (q), E\[\to \] (r)
D. A\[\to \] (r), B\[\to \] (q), C\[\to \] (t), D\[\to \] (s), E\[\to \] (p)
Answer» D. A\[\to \] (r), B\[\to \] (q), C\[\to \] (t), D\[\to \] (s), E\[\to \] (p)
1178.

If a train takes 5 hours to travel a distance of 250 km from Delhi to Jaipur, the average speed of the train is A x 10 km/h, where A is

A. 1                                 
B. 2
C. 3                                 
D. 5
Answer» E.
1179.

The time taken to complete 20 oscillations by a second?s pendulum is

A. 20s   
B. 50s
C. 40s                              
D. 5s
Answer» B. 50s
1180.

A man walks on a straight road from his home to market 2.5km away with a speed of 5 km/h. Finding the market closed, he instantly turns and walks back home with a speed of 7.5 km/h. The average speed of the man over the interval of time 0 to 40 min. is equal to -

A. 5 km/h                        
B. 25/4 km/h
C. 30/4 km/h      
D. 45/8 km/h
Answer» E.
1181.

Harish runs faster than Suresh in a given length. To compare the Harish and Suresh the physical quantities involved are:

A. Length only
B. Time only
C. Length and time
D. Neither length nor time
Answer» D. Neither length nor time
1182.

The time-displacement graph shows

A. An object moving with a uniform velocity
B. An object moving with a non-uniform speed
C. A uniformly accelerated motion
D. No information
Answer» C. A uniformly accelerated motion
1183.

If the velocity of a body does not change with time, its acceleration is

A. zero        
B. infinite
C. unity                           
D. None of these
Answer» B. infinite
1184.

In velocity-time graphs

A. Velocity is taken along the Y-axis and Time is taken along the X-axis
B. Straight line indicates uniform acceleration
C. Straight line parallel to x-axis indicates uniform motion
D. All of the above
Answer» E.
1185.

A man runs 10 km in 30 min. What is his speed per hour?

A. \[5\,km\,{{h}^{-1}}\]                     
B.        \[10\,km\,{{h}^{-1}}\]   
C.        \[15\,km\,{{h}^{-1}}\]                   
D.         \[20\text{ }km\text{ }{{h}^{-1}}\]                           
Answer» E.
1186.

The velocity of an object can be changed by (i) Changing the speed (ii) Changing the direction of motion (iii) Changing both the speed and direction of motion (iv) None of the above

A. (i) and (ii) only
B. (ii) and (iii) only
C. (i) and (iii) only           
D. (i), (ii) and (iii)
Answer» E.
1187.

A body having zero speed (i) Is always under rest (ii) Has zero acceleration (iii) Has uniform acceleration (iv) Always under motion

A. (i) and (ii) only
B. (ii) and (iii) only
C. (i) and (iii) only           
D. (i), (ii) and (iii)
Answer» B. (ii) and (iii) only
1188.

The direction of motion of a body is decided by________ of the body (i) Velocity                   (ii) acceleration (iii) Displacement        (iv) speed

A. (i) and (ii) only
B. (ii) and (iii) only
C. (i) and (iii) only           
D. (i), (ii) and (iii)
Answer» B. (ii) and (iii) only
1189.

If a car is traveling north on a straight road and its brakes are applied, it will

A. Have no acceleration
B. Accelerate to the south
C. Accelerate to the north
D. Accelerate either east or west
Answer» C. Accelerate to the north
1190.

If a body is moving at constant speed in a circular path, its

A. Velocity is constant and its acceleration is zero
B. Velocity and acceleration are both changing direction only
C. Velocity and acceleration are both increasing
D. Velocity is constant and acceleration is changing direction
Answer» C. Velocity and acceleration are both increasing
1191.

If a student rides his bicycle on a straight road and does not speed up or slow down, he is travelling with a

A. Constant acceleration
B. Constant velocity
C. Positive acceleration
D. Negative acceleration
Answer» C. Positive acceleration
1192.

The Sun appears to move across the sky during the day. The best explanation for this apparent motion is that Earth is

A. Rotating on its axis
B. Revolving around the Sun
C. Much smaller than the Sun
D. Tilted on its axis
Answer» C. Much smaller than the Sun
1193.

Raghu and Ram have to reach point C from point B. They started movies: together from point B and reached point C at the same time but by taking two different paths. If the distance travelled by Ram is greater than that o: Raghu then which of the following statements is correct?

A. Speed of Raghu is greater than speed of Ram.
B. Speed of Ram is greater than speed of Raghu.
C. Both Ram and Raghu were moving with equal speed.
D. Both Ram and Raghu were at rest.
E. None of these
Answer» B. Speed of Ram is greater than speed of Raghu.
1194.

A body has an acceleration of\[\text{4m}{{\text{s}}^{-\text{2}}}\]. What is its retardation?

A.  \[-\text{ 4m}{{\text{s}}^{\text{2}}}\]
B.  \[\text{4m}{{\text{s}}^{-\text{2}}}\]
C. zero
D. cannot be decided
Answer» B.  \[\text{4m}{{\text{s}}^{-\text{2}}}\]
1195.

The object starts from 0 having a straight line motion along the path OPQRS is represented by the distance-time graph shown in figure. Match the given statements to the different parts of the graph correctly. (i) Object is moving with maximum speed. (ii) Object starts moving in reversed direction. (iii) Object is at rest. (iv) Average velocity of object is zero.

A. (i) (ii) (iii) (iv) OS OP RS PQ
B. (i) (ii) (iii) (iv) OP RS QR OS
C. (i) (ii) (iii) (iv) PQ RS OP QR
D. (i) (ii) (iii) (iv) QR PQ OS OP
Answer» C. (i) (ii) (iii) (iv) PQ RS OP QR
1196.

The bob of a simple pendulum is set in motion (to and fro motion). In the beginning its time period was Is. After 30 oscillations, the bob appears to have slowed down; the time of one complete oscillation then would be

A. 1.5s                             
B. 2s
C. 1 s                   
D. can't predict
Answer» D. can't predict
1197.

Which of the following cannot be obtained from a given distance-time graph of a moving object?

A. Speed of the object
B. Time taken by object
C. Change in position of object
D. Change in Weight of object
Answer» E.
1198.

Select the one that was used as a basis for measurement of time in earlier times.

A. occurrence of periodic events
B. Movement of a compass needle
C. Reading an odometer
D. None of these
Answer» B. Movement of a compass needle
1199.

The time taken by Renu to reach her school from her home was 15 minutes. If her speed is 2 m/s, then the distance between her home and her school is

A. 1.8km      
B. 1km
C. 3km                            
D. 2.5km
Answer» B. 1km
1200.

An early device used for measuring time was

A. Watch with balance wheel
B. Pendulum clock
C. Sundial
D. Sand glasses
Answer» D. Sand glasses