Explore topic-wise MCQs in 6th Class.

This section includes 2267 Mcqs, each offering curated multiple-choice questions to sharpen your 6th Class knowledge and support exam preparation. Choose a topic below to get started.

1751.

DIRECTIONS: Match Column-I with Column-II and select the correct answer using the codes given below the column. Column - I Column - II A. Upper jaw (p) has an outer skeleton B. Ribs (q) has a streamlined body C. Fish (r) is an immovable joint D. Cockroach (s) protect the heart

A. \[A\to (p);B\to (q);C\to (r);D\to (s)\]
B. \[A\to (r);B\to (s);C\to (q);D\to (p)\]
C. \[A\to (q);B\to (s);C\to (r);D\to (p)\]
D. \[A\to (s);B\to (r);C\to (q);D\to (p)\]
Answer» C. \[A\to (q);B\to (s);C\to (r);D\to (p)\]
1752.

Based on the flow chart given below, which of the following is correctly represented by P and Q?     

A. P Q Boiling Evaporation     
B.        P Q Evaporation Boiling     
C.        P Q Boiling Condensation     
D.        P Q Evaporation Condensation
Answer» B.        P Q Evaporation Boiling     
1753.

A balanced diet is one which contain

A. all nutrients that are body needs and that too in right proportions.
B. all nutrients but more of carbo-hydrates and fats.
C. Both (a) and (b)          
D. None of these
Answer» B. all nutrients but more of carbo-hydrates and fats.
1754.

What is a joint?

A.  Framework of the body.
B.  Fluid connective tissue.
C.  The place where two bones are joined.
D.  The place where tendons are fastened together.
Answer» D.  The place where tendons are fastened together.
1755.

Deficiency of which vitamin cause rickets?         

A. Vitamin A    
B.          Vitamin D    
C. Vitamin B    
D. Vitamin C
Answer» C. Vitamin B    
1756.

The change of milk to curd, when we add a small quantity of curd to milk, can be classified as

A. Fast change     
B. slow change
C. periodic change          
D. None of these
Answer» C. periodic change          
1757.

Which of these is not a deficiency disease?

A.  Goitre        
B.      Kwashiorkar
C.      Anaemia   
D.      Dental decay
Answer» E.
1758.

Any change in which the original substance can be obtained by reversing conditions is known as a

A. reversible change        
B. periodic change
C. physical change          
D. Both (a) and (c)
Answer» E.
1759.

A list of changes is given below. Identify their type and choose correct option. Boiling of egg. Making curd from milk Flowering of bud Making flour from grain

A. (i), (ii), (iii) and (iv) are irreversible changes
B. and (iv) are chemical changes
C. (i), (ii), and (iv) are natural changes
D. (ii), (iii) and (iv) are periodic changes
Answer» B. and (iv) are chemical changes
1760.

In an experiment shown by the class teacher, the side of the ruler which holds the inflated balloon dips as compared to the balloon without air. What is the conclusion drawn from this experiment?

A.  Balloon with air has greater force of gravity.
B.      Air has definite mass.
C.      Masses of the balloons are different.
D.      Balloon has more matter than air.
Answer» C.      Masses of the balloons are different.
1761.

During swimming. Fish uses its muscles and they

A. make the front part of its body curve to one side and tail part to the same side
B. make the front part of its body curve to one side and tail part to the opposite site
C. make the whole body straight
D. All of the above
Answer» C. make the whole body straight
1762.

The percentage of which gas is maximum in inhaled air?

A. Nitrogen       
B.          Oxygen
C. Carbon dioxide           
D. Other gases    
Answer» B.          Oxygen
1763.

Which joint moves in the same way as shown in the figure given below?

A.  Gliding joint
B.  Pivot joint
C.  Hinge joint
D.  Ball and socket joint    
Answer» D.  Ball and socket joint    
1764.

Pranav does not like to eat fruits and vegetables which of the following deficiency diseases may Pranav suffer from?

A.  Protein deficiency disease.
B.      Carbohydrate deficiency.
C.      Vitamin deficiency disease.
D.      Fat deficiency disease.
Answer» D.      Fat deficiency disease.
1765.

DIRECTIONS: Read the passage (s) given below and answer the questions that follow Passage -1 For changing milk into curd we add a small quantity of curd into milk. The milk is stirred and is set aside for a few hours at a warm place. In a few hours the milk changes into curd. Chemical changes are generally

A. reversible change
B. irreversible change
C. periodic change
D. None of these
Answer» C. periodic change
1766.

DIRECTIONS: Read the passage(s) given below and answer the questions that follow Passage - 3 If in a closed room there is some material that is burning, you may have felt suffocation. This is due to excess carbon dioxide that may be accumulating in the room. Plants and animals consume oxygen for respiration and produce carbon dioxide. Assertion (A): Oxygen helps in burning of substances. Reason (R): Burning of substances is a combustion process.

A. Both A and R are true and R is the correct explanation of A.
B. Both A and R are true but R is not the correct explanation of A.
C. A is true but R is false.
D. A is false but R is true.
Answer» C. A is true but R is false.
1767.

Which of these is NOT a physical change?

A.  Sulphur dissolved in carbon disulphide
B.      Resin dissolved in alcohol
C.      The fermentation of cane juice
D.      The glowing of an electric bulb
Answer» D.      The glowing of an electric bulb
1768.

DIRECTIONS: Match Column-I with Column-II and select the correct answer using the codes given below the column. Column - I Column - II A. Hinge joint (p) Neck joint B. Gliding joint (q) Hip joint C. Pivot joint (r) Knee point D. Ball & Socket joint (s) Wrist point

A. \[A\to (r),B\to (s),C\to (p),D\to (q)\]
B. \[A\to (p),B\to (q),C\to (s),D\to (r)\]
C. \[A\to (s),B\to (p),C\to (r),D\to (q)\]
D. \[A\to (q),B\to (r),C\to (p),D\to (s)\]
Answer» B. \[A\to (p),B\to (q),C\to (s),D\to (r)\]
1769.

DIRECTIONS: Read the passage (s) given below and answer the questions that follow Passage - 2 The X-rays show the shape of bones of our body. We can also have some idea about the number and shape of bones in some parts of our body by feeling them. In which parts of our body can we feel the bones?

A. Knee     
B.          Ankle
C. Fingers            
D. All of these
Answer» E.
1770.

DIRECTIONS: Read the passage(s) given below and answer the questions that follow Passage - 3 If in a closed room there is some material that is burning, you may have felt suffocation. This is due to excess carbon dioxide that may be accumulating in the room. Plants and animals consume oxygen for respiration and produce carbon dioxide. Plants consume which of the following during photosynthesis?

A. Oxygen        
B.          Nitrogen
C. Carbondioxide
D.          All of these
Answer» D.          All of these
1771.

Why do the earthworms come out of soil during heavy rains?

A. They come out of soil so as to stay at some dry place.
B. They come out of soil for respiration.
C. They come out to see the nature when it is raining heavily.
D. None of the above
Answer» C. They come out to see the nature when it is raining heavily.
1772.

On heating, the colour of zinc oxide changes from white to yellow. What type of change is this?

A.  A physical change
B.      A chemical change
C.      A photochemical change
D.      An irreversible change
Answer» B.      A chemical change
1773.

Which organs are protected by the rib cage?

A.  Heart and lungs.
B.  Liver and heart.
C.  Kidney and lungs.
D.  Stomach and intestine.
Answer» B.  Liver and heart.
1774.

Which part of the ear lobe shown in picture has cartilage? 

A. Lower part of ear       
B. Upper part of ear        
C. Middle part of ear     
D. Not present in any part of ear      
Answer» C. Middle part of ear     
1775.

When water with sugar is stirred with a spoon, sugar is dissolved faster. Why does this happen?

A.  The spoon acts as a catalyst.
B.      On stirring, the temperature increases.
C.      Stirring increases the rate of interaction.
D.      The attraction between the molecules of sugar increases.
Answer» D.      The attraction between the molecules of sugar increases.
1776.

We need a pair of muscles to move a bone, because a muscle

A. can only pull      
B. can only push
C. can push and pull    
D. All of these
Answer» B. can only push
1777.

Which of the following statements is true regarding the properties of air?

A.  Air is a good conductor of electricity.
B.      Air is a good conductor of heat.
C.      Air is translucent in nature.
D.      The composition of air varies from place to place.
Answer» E.
1778.

Which of these changes starch to blue black?

A.  Lime water
B.      Iodine
C.      Methylated solution
D.      Benedict's solution
Answer» C.      Methylated solution
1779.

Select the one that represents a periodic change.

A. Occurrence of tides
B. Opening of a morning glory flower
C. Both the above
D. None of these
Answer» D. None of these
1780.

The proportion of oxygen and carbon dioxide in the atmosphere is maintained by

A.  plants.       
B.      animals.
C.      machines.    
D.      Both (a) and (b).
Answer» E.
1781.

Read the following two statements carefully and choose the correct option. Over-eating makes the body more strong to fight with diseases. (ii). Vitamins do not produce any energy.

A. Statement (i) is correct while statement (ii) is incorrect.
B. Statement (ii) is correct while statement (i) is incorrect.
C. All statements are correct.
D. All statements are incorrect.
Answer» C. All statements are correct.
1782.

DIRECTIONS: Read the passage(s) given below and answer the questions that follow Passage - 1 Carbohydrates mainly provide energy to our body. Fatsal so give us energy. In fact, fats give much more energy as compared to the same amount of carbohydrates. Foods containing fats and carbohydrates are called energy giving foods. Which cereal is called the "carbohydrate rich" source of food?

A. Wheat   
B.          Rice
C. Maize       
D. Barley
Answer» C. Maize       
1783.

Iron, a biological nutrient, is found in human body in

A. bones     
B. blood
C. hair  
D. All of these
Answer» C. hair  
1784.

What kind of change is the making of a ring from pure gold?

A.  An irreversible, chemical change
B.      An irreversible, physical change
C.      A reversible, chemical change
D.      A reversible, physical change
Answer» E.
1785.

DIRECTIONS: Match column-I with Column-II and select the correct answer using the code given below the columns. Column-I Column-II A. On heating iron rod (p) It melts B. On cooling water vapour (q) Expands C. On heating candle wax (r) Salt and Sugar D. Dissolves easily in water (s) It condenses

A. \[A\to (q);B\to (s);C\to (p);D\to (r)\]
B. \[A\to (s),B\to (r),C\to (p),D\to (q)\]
C. \[A\to (r),B\to (s),C\to (q),D\to (p)\]
D. \[A\to (r),B\to (q),C\to (s),D\to (p)\]
Answer» B. \[A\to (s),B\to (r),C\to (p),D\to (q)\]
1786.

The joint shown in pictures below A, B, C, Dare respectively.  

A. Ball and socket, fixed, hinge, pivotal
B. Hinge, pivotal, fixed, ball and socket
C. Hinge, pivotal, ball and socket, fixed
D. Pivotal, hinge, fixed, ball and socket
Answer» D. Pivotal, hinge, fixed, ball and socket
1787.

Match the following vitamins and minerals with their sources. Column I Column II (i) Amla (a) Calcium (ii) Carrot (b) Iodine (iii) Milk (c) Vitamin C (iv) Salt (d) Vitamin A

A.  \[\left( i \right)-d,\left( ii \right)-c,\left( iii \right)-b,\left( iv \right)-a\]
B.      \[\left( i \right)-c,\left( ii \right)-d,\left( iii \right)-a,\left( iv \right)-b\]
C.      \[\left( i \right)-a,\left( ii \right)-b,\left( iii \right)-c,\left( iv \right)-d\]
D.      \[\left( i \right)-d,\left( ii \right)-a,\left( iii \right)-c,\left( iv \right)-b\]
Answer» C.      \[\left( i \right)-a,\left( ii \right)-b,\left( iii \right)-c,\left( iv \right)-d\]
1788.

Match the following terms in Column-l with those in Column-II correctly. Column-I Column-II a. Aquatic animals 1. Sail boat b. Mountaineers 2. Soot and dust c. Factories 3. Oxygen cylinders d. Wind 4. Dissolved oxygen

A.  \[a-1,b-2,c-3,d-4\]
B.      \[a-2,b-1,c-4,d-3\]
C.      \[a-3,b-4,c-1,d-2\]
D.      \[a-4,b-3,c-2,d-1\]
Answer» E.
1789.

DIRECTIONS: Read the passage(s) given below and answer the questions that follow Passage - 3 Deficiency of one or more nutrients can cause diseases or disorders in our body. Diseases that occur due to lack of nutrients over a long period are called deficiency diseases. Which of the following is a symptoms of deficiency of vitamin D?

A. Bones became soft and bent
B. Weak bones and tooth decay
C. Bleeding gums, wounds take longer time to heal
D. Poor vision
Answer» B. Weak bones and tooth decay
1790.

Mountaineers carry oxygen cylinders with them because

A.  oxygen supports combustion.
B.      oxygen is less at higher altitudes.
C.      more oxygen is needed to cook food.
D.      oxygen does not support combustion.
Answer» C.      more oxygen is needed to cook food.
1791.

Skull

A. is made up of many bones joined together
B. encloses brain and sense organs
C. consists of cranium and facial bones
D. All of the above
Answer» E.
1792.

In the figures below the change occurring is a

A. physical change 
B. chemical change
C. periodic change 
D. None of these
Answer» C. periodic change 
1793.

When a woolen yam is knitted to get a sweater, the change can be classified as

A. physical change     
B. chemical change
C. exothermic change
D. endothermic change
Answer» B. chemical change
1794.

At which joint can the movement be only like the opening and closing of a door?

A.  Neck       
B.  Knee
C.  Arm        
D.  Both (b) and (c)
Answer» C.  Arm        
1795.

Which organs help a fish to swim in water?

A.  Scales
B.  Stream lined body
C.  Fins
D.  All the above
Answer» E.
1796.

Which of the following options contain a healthy diet?

A.  A variety of foods each day, such as fruits and vegetables, whole grain bread and cereal, meat, dairy products, dry peas, beans, nuts and water.
B.      Fat and cholesterol are found in meat, egg, butter, cream and liver.
C.      Vegetables, deep fried food such as potato chips and alcoholic drinks.
D.      Snacks, candy and soft drinks.
Answer» B.      Fat and cholesterol are found in meat, egg, butter, cream and liver.
1797.

In the given figure, a burning candle is kept in the trough containing water. It is put off after some time when covered by an inverted gas jar. What can be concluded from the above activity?

A.  Oxygen is 1/5th the volume of air.
B.      The ratio of oxygen and nitrogen in air is 1 : 4.
C.      Oxygen is required for burning the candle.
D.      All of the above
Answer» E.
1798.

Which organ helps a snail to move?

A.  Shell        
B.  Wings  
C.  Bristles     
D.  Muscular foot
Answer» E.
1799.

Ghee and butter are major source of

A. protein
B.          fats
C. vitamins    
D. minerals
Answer» C. vitamins    
1800.

In which of the following cases is heat energy released? When ice melts When water freezes to ice When water vapour condenses into liquid water When water evaporate into water vapours

A. A, B and C     
B. B, C and D
C. B and C       
D. All of these
Answer» D. All of these