2267 + Mcqs in Science Page 38 McqOptions

1851.	Breastbone is also known as:
A.	Sacrum
B.	Sternum
C.	Scapula
D.	sternum
E.	None of these
Answer» C. Scapula

Discussion

1852.	Which type of joint is there between upper arm bone and lower arm bone?
A.	Hinge joint
B.	Fixed joint
C.	Pivot joint
D.	Ball and socket joint
E.	None of these
Answer» B. Fixed joint

Discussion

1853.	Which of the following is correct about function of fats in our body?
A.	They are sources of energy.
B.	They are sources of essential fatty acids
C.	Both the above
D.	None of the above
Answer» D. None of the above

Discussion

1854.	Identify the chemical change from the following.
A.	The melting of ice
B.	The heating of sugar crystals
C.	The freezing of water
D.	The dissolution of salt in water
Answer» C. The freezing of water

Discussion

1855.	Physical changes are usually
A.	periodic changes
B.	a change in state of matter
C.	fast changes
D.	a change in composition
Answer» C. fast changes

Discussion

1856.	Select the function per formed by our skeletal system.
A.	It gives shape and form to our body.
B.	It helps body in performing different body movements.
C.	It protects our delicate internal organs.
D.	It performs all the functions given in (a), (b) and (c).
Answer» E.

Discussion

1857.	DIRECTIONS: The questions in this segment consists of two statements, one labelled as "assertion A?? and the other labelled as "reason R ". You are to examine these two statements carefully and decide if the assertion A and reason R are individually true and if so, whether the reason is a correct explanation of the assertion. Select your answers to these items using codes given below. Assertion (A): Deficiency of calcium causes rickets. Reason (R): In our diet milk and milk products are the major source of calcium.
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.

Discussion

1858.	Softening of iron on heating is: i. Reversible change ii. Chemical change iii. Physical change iv. Irreversible change Which of the following is correct for the above statement?
A.	i and iii
B.	ii and iii
C.	i and iv
D.	iii and iv
E.	None of these
Answer» B. ii and iii

Discussion

1859.	Which of the following statement(s) is/are correct?
A.	Plants and animals are interdependent.
B.	Plants and animals depend on each other for exchange of oxygen.
C.	Plants and animals depend on each other for exchange of carbon dioxide.
D.	All of the above
Answer» E.

Discussion

1860.	Anaerobic bacteria digest animal waste and produce biogas (change-A). The biogas is then burnt as fuel (change-B). The following statements pertain to these changes. Choose the correct one.
A.	Process A is a chemical change
B.	Process B is a chemical change
C.	Both processes A and B are chemical changes
D.	None of these processes is a chemical change.
Answer» D. None of these processes is a chemical change.

Discussion

1861.	The place where two bones meet is:
A.	Ligament
B.	Tendon
C.	Joint
D.	Cartilage
E.	None of these
Answer» D. Cartilage

Discussion

1862.	Select the component that is obtained only from plant sources.
A.	Carbohydrates
B.	Proteins
C.	Roughages
D.	Vitamins
Answer» B. Proteins

Discussion

1863.	How many types of skeleton are present in as nail?
A.	1
B.	2
C.	3
D.	None of these
Answer» B. 2

Discussion

1864.	DIRECTIONS: Read the passage (s) given below and answer the questions that follow Passage - 5 Ravi and Tina were working on a project based on' changes around us?, for which they were observing different changes occurring in their daily life. They went to kitchen where they saw there mother was cooking food on LPG stove. Ravi said that burning of LPG in LPG stove involves chemical change. But Tina argued that both physical and chemical changes are involved this process. Burning of LPG gas is which kind of change?
A.	Chemical change
B.	Physical change
C.	Periodic change
D.	Reversible change
Answer» B. Physical change

Discussion

1865.	Match the column I with column II and choose the correct option from the codes given below: Column I Column II P. Digestion of food in our body (i) Fast change Q. Earthquake (ii) Natural, desirable change R. Falling of stone (iii) Natural, undesirable change S. Change of seasons (iv) Slow change
A.	P-(iv), Q-(ii), R-(iii), S-(i)
B.	P-(iii), Q-(iv), R-(ii), S-(i)
C.	P-(ii), Q-(i), R-(iv), S-(iii)
D.	P-(iv), Q-(iii), R-(i), S-(ii)
Answer» E.

Discussion

1866.	Rita fixed a candle at the bottom of a trough containing water. After lighting the candle, she inverted a gas jar over it. What did she observe?
A.	The flame continued to burn and water rose in the jar.
B.	The flame was put off and water rose in the jar.
C.	The flame continued to burn and water became milky.
D.	The flame was put off and black smoke was deposited on the sides of the jar.
Answer» C. The flame continued to burn and water became milky.

Discussion

1867.	Which of the following joints work as in the figure given below?
A.	Ankle and knee joints
B.	Hip and shoulder joints.
C.	Neck and wrist joints.
D.	Shoulder and knee joints.
Answer» C. Neck and wrist joints.

Discussion

1868.	Which of the following is correct for earthworm?
A.	Its body is made of many rings joined end to end.
B.	Its body has only very small bones.
C.	It cannot extend or shorten its body using its muscles.
D.	All of the above
Answer» B. Its body has only very small bones.

Discussion

1869.	DIRECTIONS: Read the following two statements carefully and choose the correct option. (i) Change of liquid water to steam, on boiling, is an irreversible change. (ii) Beating of human heart is a non-periodic change.
A.	Statement (i) is correct while statement (ii) is in correct.
B.	Statement (ii) is correct while statement (i) is incorrect.
C.	Both statements are correct.
D.	Both statements are incorrect.
Answer» E.

Discussion

1870.	Iron blade of spade is made slightly smaller than the wooden handle because:
A.	Iron ring contracts on heating.
B.	Iron ring expands on heating.
C.	Iron ring remains the same on heating.
D.	Wooden handle expands on heating.
E.	None of these
Answer» C. Iron ring remains the same on heating.

Discussion

1871.	We consider eating fish to be healthy as compared to flesh of other animals because fish contains
A.	essential vitamins
B.	essential fatty acids
C.	more carbohydrates and proteins
D.	all the nutrients of food
Answer» D. all the nutrients of food

Discussion

1872.	Which activity helps our body to produce vitamin D?
A.	Jogging and exercising.
B.	Standing in the Sun.
C.	Consuming more fruits.
D.	Practising yoga.
Answer» C. Consuming more fruits.

Discussion

1873.	What kind of change is the dissolving of sugar in water?
A.	Periodic change
B.	Reversible change
C.	Irreversible change
D.	Chemical change
Answer» C. Irreversible change

Discussion

1874.	Which one is a periodic change?
A.	Earth-quake
B.	Formation of rainbow in sky
C.	Occurrence of tides in seas
D.	None of these
Answer» D. None of these

Discussion

1875.	The common feature in both me
A.	both can be classified as sea animals.
B.	both can move in water using some fuel.
C.	both have streamlined body
D.	Nothing is common in them.
Answer» D. Nothing is common in them.

Discussion

1876.	Which type of movement is possible for the joint at forearm and knee?
A.	Stretching and folding movement.
B.	Side to side movement.
C.	Gliding movement.
D.	Circular movement.
Answer» B. Side to side movement.

Discussion

1877.	The process in which iron is covered with a brown layer due to moisture and oxygen is called
A.	Evaporation
B.	Condensation
C.	Rusting
D.	Burning
E.	None of these
Answer» D. Burning

Discussion

1878.	Which of the following examples of food under P, Q and R is correct? P: Supplies materials for building cells. Q: Supplies a lot of energy. R: Supplies high dietary fibre.
A.	P Q R Fish Lettuce Palm oil
B.	P Q R Butter Lettuce Fish
C.	P Q R Mutton Utter Bean sprout
D.	P Q R Butter Mutton Palm oil
Answer» D. P Q R Butter Mutton Palm oil

Discussion

1879.	Which one of the following Vitamins deficiency leads to bleeding of gums, slow healing of wounds and aching limbs?
A.	Vitamin A
B.	Vitamin B
C.	Vitamin C
D.	Vitamin D
Answer» D. Vitamin D

Discussion

1880.	What new material is formed when a candle burns?
A.	Melted wax
B.	Water vapour
C.	Carbon dioxide
D.	Both (b) and (c)
Answer» E.

Discussion

1881.	Which joint is present at the knee and arm?
A.	Ball and socket joint.
B.	Pivot joint
C.	Hinge joint
D.	Fixed joint
Answer» D. Fixed joint

Discussion

1882.	The bones are moved
A.	by simultaneous contraction and relaxation of two sets of muscles
B.	by alternate contraction and relaxation of two sets of muscles
C.	by alternate contraction and relaxation of one set of muscles
D.	None of these
Answer» C. by alternate contraction and relaxation of one set of muscles

Discussion

1883.	Which of the following represents X and Y in the figure given below?
A.	X-organ, Y-muscle
B.	X-muscle, Y-joint
C.	X-joint, Y-bone
D.	X-bone, Y-organ
Answer» C. X-joint, Y-bone

Discussion

1884.	Which of the constituents of air on increasing, causes global warming?
A.	Nitrogen
B.	Oxygen
C.	Inert gases
D.	Carbon dioxide
Answer» E.

Discussion

1885.	DIRECTIONS: Read the passage (s) given below and answer the questions that follow Passage - 3 Which of the following represent ?C??
A.	Solar eclipse
B.	Raining
C.	Formation of rainbow
D.	Growth of a plant
Answer» B. Raining

Discussion

1886.	Study the flowchart carefully. (i) Melting of ice(i) Cutting of paper(ii) Blowing of balloon(ii) Flowering of bud Which of the following is correct?
A.	PQ Reversible changeReversible change
B.	PQ Irreversible changeReversible change
C.	PQ Irreversible changeIrreversible change
D.	PQ Reversible changeIrreversible change
Answer» E.

Discussion

1887.	Rohan tore a sheet of paper into pieces and then burnt them. Identify the irreversible change taking place in the process.
A.	Tearing the sheet into pieces.
B.	Burning the pieces
C.	Both tearing and burning the pieces
D.	None of these.
Answer» D. None of these.

Discussion

1888.	Observe the two figures given below. In figure I, a solution of sugar in water is heated and in figure II, only sugar is being heated. What is the correct sequence of changes taking place?
A.	In figure I, physical change is taking place while in figure II a chemical change is taking place.
B.	In figure I, a chemical change is taking place while in figure II a physical change is taking place.
C.	In both figures, physical changes are taking place.
D.	In both figures, chemical changes are taking place.
Answer» B. In figure I, a chemical change is taking place while in figure II a physical change is taking place.

Discussion

1889.	Carefully observe the figures A and B below and choose the correct option. A. B.
A.	Both 'A' and 'B' are periodic changes
B.	Both 'A' and ' B ' are non-periodic change
C.	'A' is periodic and 'B' is non-periodic change
D.	'B' is periodic and 'A' is non-periodic change
Answer» C. 'A' is periodic and 'B' is non-periodic change

Discussion

1890.	Read the given passage and fill in the blanks by choosing an appropriate option. Iron nails when new are grey and bright. When exposed to ___(i)___, they get covered with a ___(ii)___ coating. This process is called ___(iii)___ and it is a ___(iv)___ change.
A.	(i)(ii)(iii)(iv)Moist airGreyCorrosionChemical, reversible
B.	(i)(ii)(iii)(iv)Air and waterReddish brownRustingChemical, irreversible
C.	(i)(ii)(iii)(iv)Oxygen in airGreenRancidityPhysical, irreversible
D.	(i)(ii)(iii)(iv)Nitrogen in airReddish brownGalvanisationChemical, irreversible
Answer» C. (i)(ii)(iii)(iv)Oxygen in airGreenRancidityPhysical, irreversible

Discussion

1891.	The burning of magnesium in air is accompanied by production of heat and light. This can be classified as
A.	physical and exothermic change
B.	chemical and exothermic change
C.	physical and endothermic change
D.	chemical and endothermic change
Answer» C. physical and endothermic change

Discussion

1892.	DIRECTIONS: The questions in this segment consists of two statements, one labelled as "Assertion A" and the other labelled as "Reason R". You are to examine these two statements carefully and decide if the Assertion A and Reason R are individually true and if so, whether the reason is a correct explanation of the assertion. Select your answers to these items using codes given below Assertion A: Burning of paper is a physical change. Reason R: The products formed on burning of paper cannot be easily converted back to paper.
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» E.

Discussion

1893.	On lowering the temperature, a liquid turns into a solid. What is this process called?
A.	Condensation
B.	Melting
C.	Freezing
D.	Sublimation
Answer» D. Sublimation

Discussion

1894.	In birds
A.	the breast bones are modified to hold muscles of flight
B.	the bony parts of fore limbs are modified as wings
C.	the bones of hind limbs are typical for walking and perching
D.	All of the above
Answer» E.

Discussion

1895.	Observe the venn diagram given below. Which of the following processes could ?X? be?
A.	The rusting of iron
B.	The burning of wood
C.	The melting of wax
D.	Milk changing to curd
Answer» D. Milk changing to curd

Discussion

1896.	The joint used in nodding of the head.
A.	Ball and socket Joint
B.	Hinge Joint
C.	Pivot Joint
D.	Gliding Joint
E.	None of these
Answer» D. Gliding Joint

Discussion

1897.	A person takes more food than his requirement. He is too fat. He may be suffering from which one of the following diseases?
A.	Anaemia
B.	Beri-beri
C.	Scurvy
D.	Obesity
Answer» E.

Discussion

1898.	Joints are the
A.	places where two parts of our body seem to be joined
B.	the points of contact between two(or more) bones together with tissues that surround it
C.	the points of contact between two(or more) bones
D.	Both (a) and (b)
Answer» E.

Discussion

1899.	Number of bones present in the human skull is:
A.	23
B.	22
C.	14
D.	8
E.	None of these
Answer» C. 14

Discussion

1900.	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. Pelvic bones
A.	are present at all joints
B.	are present only at shoulders
C.	enclose the portion of our body that is below the stomach
D.	enclose the portion of our body that is above the stomach
Answer» D. enclose the portion of our body that is above the stomach

Discussion

Explore topic-wise MCQs in 6th Class.

Breastbone is also known as:

Which type of joint is there between upper arm bone and lower arm bone?

Which of the following is correct about function of fats in our body?

Identify the chemical change from the following.

Physical changes are usually

Select the function per formed by our skeletal system.

Softening of iron on heating is: i. Reversible change ii. Chemical change iii. Physical change iv. Irreversible change Which of the following is correct for the above statement?

Which of the following statement(s) is/are correct?

Anaerobic bacteria digest animal waste and produce biogas (change-A). The biogas is then burnt as fuel (change-B). The following statements pertain to these changes. Choose the correct one.

The place where two bones meet is:

Select the component that is obtained only from plant sources.

How many types of skeleton are present in as nail?

Match the column I with column II and choose the correct option from the codes given below: Column I Column II P. Digestion of food in our body (i) Fast change Q. Earthquake (ii) Natural, desirable change R. Falling of stone (iii) Natural, undesirable change S. Change of seasons (iv) Slow change

Rita fixed a candle at the bottom of a trough containing water. After lighting the candle, she inverted a gas jar over it. What did she observe?

Which of the following joints work as in the figure given below?

Which of the following is correct for earthworm?

DIRECTIONS: Read the following two statements carefully and choose the correct option. (i) Change of liquid water to steam, on boiling, is an irreversible change. (ii) Beating of human heart is a non-periodic change.

Iron blade of spade is made slightly smaller than the wooden handle because:

We consider eating fish to be healthy as compared to flesh of other animals because fish contains

Which activity helps our body to produce vitamin D?

What kind of change is the dissolving of sugar in water?

Which one is a periodic change?

The common feature in both me

Which type of movement is possible for the joint at forearm and knee?

The process in which iron is covered with a brown layer due to moisture and oxygen is called

Which of the following examples of food under P, Q and R is correct? P: Supplies materials for building cells. Q: Supplies a lot of energy. R: Supplies high dietary fibre.

Which one of the following Vitamins deficiency leads to bleeding of gums, slow healing of wounds and aching limbs?

What new material is formed when a candle burns?

Which joint is present at the knee and arm?

The bones are moved

Which of the following represents X and Y in the figure given below?

Which of the constituents of air on increasing, causes global warming?

DIRECTIONS: Read the passage (s) given below and answer the questions that follow Passage - 3 Which of the following represent ?C??

Study the flowchart carefully. (i) Melting of ice(i) Cutting of paper(ii) Blowing of balloon(ii) Flowering of bud Which of the following is correct?

Rohan tore a sheet of paper into pieces and then burnt them. Identify the irreversible change taking place in the process.

Observe the two figures given below. In figure I, a solution of sugar in water is heated and in figure II, only sugar is being heated. What is the correct sequence of changes taking place?

Carefully observe the figures A and B below and choose the correct option. A. B.

Read the given passage and fill in the blanks by choosing an appropriate option. Iron nails when new are grey and bright. When exposed to ___(i)___, they get covered with a ___(ii)___ coating. This process is called ___(iii)___ and it is a ___(iv)___ change.

The burning of magnesium in air is accompanied by production of heat and light. This can be classified as

On lowering the temperature, a liquid turns into a solid. What is this process called?

In birds

Observe the venn diagram given below. Which of the following processes could ?X? be?

The joint used in nodding of the head.

A person takes more food than his requirement. He is too fat. He may be suffering from which one of the following diseases?

Joints are the

Number of bones present in the human skull is:

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. Pelvic bones

Read the given passage and fill in the blanks by choosing an appropriate option. Iron nails when new are grey and bright. When exposed to _(i)_, they get covered with a _(ii)_ coating. This process is called _(iii)_ and it is a _(iv)_ change.