Download App

Science [1 Marks Each] M.C.Q.

Changes Around Us · MP Board (MPBSE) STD 6 (Madhya Pradesh - English Medium). 248 questions.

Questions · Page 3 of 5

[1 Marks Each] M.C.Q.

MCQ 1011 Mark
In an experiment the following changes were observed.
  1. It was accompanied by change in colour.
  2. It was accompanied by a change in temperature.
  3. It was accompanied by a change in energy.
The change involved can be classified as a:
  • A
    Periodic change.
  • B
    Non$-$periodic change.
  • C
    Physical change.
  • ✓
    Chemical change.
Answer
Correct option: D.
Chemical change.
Since the change is accompanied by change in colour, temperature and energy. It is a chemical change.
View full question & answer→
MCQ 1021 Mark
Which of the following is a periodic change?
  • A
    Change of season.
  • B
    Phases of moon.
  • C
    Beating of human heart.
  • ✓
    All of these.
Answer
Correct option: D.
All of these.
All these changes are periodic as they occur after regular intervals of time.
View full question & answer→
MCQ 1031 Mark
Karuna wrapped some green gram pulses in a wet cotton cloth. She opened it after a couple of days and found small, white thread like structures on the seeds. What change did the pulses undergo?
  • A
    They have undergone a physical change.
  • B
    They became fresh as usual by washing and drying.
  • ✓
    They have undergone a chemical change.
  • D
    They have undergone a reversible, physical change.
Answer
Correct option: C.
They have undergone a chemical change.
In the presence of moisture and air, pulses germinate. Germination is a chemical change.
View full question & answer→
MCQ 1041 Mark
Rolling of chapati and baking of chapati are the changes that:
  • A
    Can be reversed.
  • B
    Cannot be reversed.
  • ✓
    Can be reversed and cannot be reversed, respectively.
  • D
    Cannot be reversed and can be reversed, respectively.
Answer
Correct option: C.
Can be reversed and cannot be reversed, respectively.
Rolling of chapatti can be reversed and baking of chapatti cannot be reversed.
View full question & answer→
MCQ 1051 Mark
Which of the following is a natural change?
  • A
    Cutting hair.
  • ✓
    Graying hair.
  • C
    Oiling hair.
  • D
    Coloring hair.
Answer
Correct option: B.
Graying hair.
Graying hair.
View full question & answer→
MCQ 1061 Mark
Sawing a piece of wood is which kind of change?
  • A
    Reversible change.
  • ✓
    Irreversible change.
  • C
    Chemical change.
  • D
    Periodic change.
Answer
Correct option: B.
Irreversible change.
Irreversible change.
View full question & answer→
MCQ 1071 Mark
Direction: Read the passage $(s)$ given below and answer the questions that follow Passage Sheetal once preparing evening tea. In the mean while telephone bell rangs and she rushed upto attend telephone call. She got busy on phone and sudden heard a sound from kitchen. When she enter back in kitchen. She saw that tea water was boiling with steal over it and cover of tea container is flew a side with water droplets over it. Water droplets on cover of tea container represents.
  • ✓
    Condensation.
  • B
    Evaporation.
  • C
    Melting.
  • D
    Freezing.
Answer
Correct option: A.
Condensation.
Condensation.
View full question & answer→
MCQ 1081 Mark
Direction: 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 $A$: The change of water from liquid to steam on heating is a physical change.
Reason $R$: Conversion of liquid into steam is called evaporation.
  • A
    Both $A$ and $R$ are true and $R$ is the correct explanation of $A.$
  • ✓
    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
Correct option: B.
Both $A$ and $R$ are true but $R$ is not the correct explanation of $A.$
Both $A$ and $R$ are true but $R$ is not the correct explanation of $A.$
View full question & answer→
MCQ 1091 Mark
Which of the following changes cannot be reversed?
  • ✓
    Hardening of cement
  • B
    Freezing of ice cream
  • C
    Opening a door
  • D
    Melting of chocolate
Answer
Correct option: A.
Hardening of cement
Hardening of cement is an irreversible change. Changes that cannot be reversed are called irreversible changes.
View full question & answer→
MCQ 1101 Mark
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.
  • ✓
    A reversible, physical change.
Answer
Correct option: D.
A reversible, physical change.
The making of a gold ring is only a change in the shape of gold. i.e. a physical change. The ring can once again be melted to form pure gold.
View full question & answer→
MCQ 1111 Mark
Which one of the following is a reversible change?
  • ✓
    Melting of ice cubes.
  • B
    Cooking of food.
  • C
    Burning of petrol.
  • D
    Glooming of flowers.
Answer
Correct option: A.
Melting of ice cubes.
Melting of ice cubes.
View full question & answer→
MCQ 1121 Mark
A list of changes is given below. Identify their type and choose correct option:
  1. Boiling of egg.
  2. Making curd from milk.
  3. Flowering of bud Making.
  4. flour from grain.
  • ✓
    $(i), (ii), (iii)$ and $(iv)$ are irreversible changes.
  • B
    $(ii)$ and $(iv)$ are chemical changes.
  • C
    $(i), (ii),$ and $(iv)$ are natural changes.
  • D
    $(ii), (iii)$ and $(iv)$ are periodic changes.
Answer
Correct option: A.
$(i), (ii), (iii)$ and $(iv)$ are irreversible changes.
View full question & answer→
MCQ 1131 Mark
Name the gas which is produced when washing soda reacts with lemon juice:
  • A
    Oxygen.
  • B
    Nitrogen.
  • C
    Argon.
  • ✓
    Carbon dioxide.
Answer
Correct option: D.
Carbon dioxide.
Carbon dioxide.
View full question & answer→
MCQ 1141 Mark
Which of the following is not a feature of a physical change?
  • A
    It is reversible.
  • B
    It is temporary.
  • C
    No new substance is formed.
  • ✓
    The composition of the substance changes.
Answer
Correct option: D.
The composition of the substance changes.
The composition of a substance changes to form a new substance. Hence, it is not a feature of physical change.
View full question & answer→
MCQ 1151 Mark
The process in which iron is covered with a brown layer due to moisture and oxygen is called:
  • A
    Evaporation.
  • ✓
    Condensation.
  • C
    Rusting.
  • D
    Burning.
Answer
Correct option: B.
Condensation.
Condensation.
View full question & answer→
MCQ 1161 Mark
___________ is a substance in a chemical reaction which does not undergo any change but helps in increasing the rate of chemical reaction.
  • A
    Reactant.
  • B
    Product.
  • C
    Inhibitor.
  • ✓
    Catalyst.
Answer
Correct option: D.
Catalyst.
Catalyst.
View full question & answer→
MCQ 1171 Mark
Find the odd one out:
  • A
    Cutting of nails.
  • B
    Breaking of glass.
  • ✓
    Formation of ash from paper.
  • D
    Tearing of paper.
Answer
Correct option: C.
Formation of ash from paper.
Formation of ash from paper is a chemical change while all other are physical changes.
View full question & answer→
MCQ 1181 Mark
Raveena covered a beaker of boiled water with a metal tray as shown in the diagram.

The beaker and metal tray were then removed from the tripod stand and left on the table. After two minutes, which of the following can be observed?
  • A
    Water droplets are seen on the outer part of metal tray.
  • ✓
    Water droplets are seen on the inner part of tray and inner part of the beaker.
  • C
    Water droplets are seen on the inner part of metal tray and outer part of the beaker.
  • D
    Water droplets are seen on the outer part of beaker only.
Answer
Correct option: B.
Water droplets are seen on the inner part of tray and inner part of the beaker.

When the water vapours strike the cooler walls of container, they condense and form water droplets on the inner surfaces of metal tray and the beaker. This process is called condensation.

View full question & answer→
MCQ 1191 Mark
Do you think we break molecules when we turn chalk into chalk powder?
  • A
    Yes, chalk powder is formed by breaking chalk into small pieces.
  • B
    Yes, because formation of chalk powder is a chemical change.
  • ✓
    No because no new substance is formed molecules of chalk and chalk powder are same.
  • D
    Yes, because chalk is bigger in size than particles of chalk powder.
Answer
Correct option: C.
No because no new substance is formed molecules of chalk and chalk powder are same.

Chalk powder has same molecules as chalk and no new product is formed on breaking chalk into chalk powder.

View full question & answer→
MCQ 1201 Mark
Which of the following are examples of chemical changes?
  1. Cutting of wood.
  2. Burning of wood.
  3. Baking of cake.
  4. Growth in plants and animals.
  • A
    $A$ and $D.$
  • B
    $B$ and $C.$
  • C
    $A, B$ and $C.$
  • ✓
    $B, C$ and $D.$
Answer
Correct option: D.
$B, C$ and $D.$

Cutting of wood is a physical change while all other are chemical change. All results in formation of a new product.

View full question & answer→
MCQ 1211 Mark
What happens to the metals on heating:
  • ✓
    They expand.
  • B
    They contract.
  • C
    They remains unaffected.
  • D
    None of these.
Answer
Correct option: A.
They expand.
Metals expand on heating.
View full question & answer→
MCQ 1221 Mark
Which of the following is not a man-made change?
  • A
    Burning of fuels.
  • ✓
    Change of day and night.
  • C
    Drying of clothes.
  • D
    Formation of curd from milk.
Answer
Correct option: B.
Change of day and night.
Change of day and night.
View full question & answer→
MCQ 1231 Mark
Directions: Read the passages given below and answer the questions that follow Passage Copper statues exposed to carbon dioxide and water in the air become coated with patina. The patina is not copper, it is not carbon dioxide, and not water. It is a new substance formed by the reaction of these chemicals with one another. The change described above is a:
  • A
    Reversible change.
  • ✓
    Irreversible change.
  • C
    Expansion.
  • D
    Contraction.
Answer
Correct option: B.
Irreversible change.

It is a chemical change so it is irreversible change.

View full question & answer→
MCQ 1241 Mark
Direction: Read the passages given below and answer the questions that follow Passage.

Which of the following represents $'A':$
  • A
    Solar eclipse.
  • B
    Formation of rainbow.
  • C
    Occurrence of season.
  • ✓
    Both $(a)$ and $(c).$
Answer
Correct option: D.
Both $(a)$ and $(c).$

Occurrence of season is a physical and periodic change. As seasons repeat themselves every year.

View full question & answer→
MCQ 1251 Mark
Look at the following figures and choose the correct option
  • A
    $(i), (ii)$ and $(iii)$ represent exothermic change.
  • ✓
    $(ii), (iv)$ and $(v)$ represent endothermic change.
  • C
    $(i), (iii)$ and $(v)$ represent exothermic change.
  • D
    Only $(ii)$ and $(iv)$ represent endothermic change.
Answer
Correct option: B.
$(ii), (iv)$ and $(v)$ represent endothermic change.
Cooking food $(ii),$ photosynthesis $(iv)$ and melting of ice represents endothermic change.
View full question & answer→
MCQ 1261 Mark
Which of the following is a reversible change?
  • A
    Change of raw egg to boiled egg.
  • ✓
    Change of stretched rubber band to its normal size.
  • C
    Change of bud to flower.
  • D
    None of these.
Answer
Correct option: B.
Change of stretched rubber band to its normal size.
The rubber band can be stretched again by applying force. It is a reversible change.
View full question & answer→
MCQ 1271 Mark
If we suspend a weight using a spring, it stretches.

What type of a change is this?
  • A
    Man-made.
  • B
    Reversible.
  • C
    Irreversible.
  • ✓
    Both $(a)$ and $(b).$
Answer
Correct option: D.
Both $(a)$ and $(b).$

 When weight is removed, the spring comes to its original shape. It is man-made and a reversible change.

View full question & answer→
MCQ 1281 Mark
Direction: Read the passages given below and answer the questions that follow Passage. 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. According to you what is the physical change involved as mentioned by Tina$?$
  • A
    Burning of $LPG$ gas.
  • ✓
    Conversion of liquid form of $LPG$ into gaseous form.
  • C
    Cooking of food.
  • D
    There is no physical change.
Answer
Correct option: B.
Conversion of liquid form of $LPG$ into gaseous form.
When nob of stove is opened liquid form of $LPG$ gets converted into gaseous form that is used for cooking food.
View full question & answer→
MCQ 1291 Mark
In the figures below the change occurring is a:
  • A
    Physical change.
  • ✓
    Chemical change.
  • C
    Periodic change.
  • D
    None of these.
Answer
Correct option: B.
Chemical change.
Both the changes explosion and burning as shown in figures are chemical change, (i.e., new substances are formed).
View full question & answer→
MCQ 1301 Mark
Which one of the following is not an undesirable change?
  • A
    The spoiling of food.
  • B
    The growth of weeds.
  • C
    Over ripening of fruits.
  • ✓
    The curdling of milk.
Answer
Correct option: D.
The curdling of milk.
The curdling of milk is a desirable change.
View full question & answer→
MCQ 1311 Mark
Carefully observe the figures below and choose the correct:
  • A
    Both the changes show in 'A' and $'B'$ are irreversible.
  • ✓
    Both the changes $'A'$ and $'B'$ are reversible.
  • C
    $'A'$ is reversible but $'B'$ is irreversible.
  • D
    $'A'$ is irreversible but $'B'$ is reversible.
Answer
Correct option: B.
Both the changes $'A'$ and $'B'$ are reversible.

Both are reversible. We can get back paper sheet from the ship shaped toy of paper and the lightening bulb can also be changed to its original position by switching off the current.

View full question & answer→
MCQ 1321 Mark
Directions: Match Column$-I$ with column$-II$ and select the correct answer using the codes given below the column.
S.No.
Column$-I$
 
Column$-II$
$A.$
Crushing of an ice cube.
$(p)$
periodic change.
$B.$
Making of curd.
$(q)$
Slow change.
$C.$
Germination of seed into plant.
$(r)$
Physical change.
$D.$
Formation of day and night.
$(s)$
Chemical change.
  • A
    $A\rightarrow (s), B\rightarrow (r), C\rightarrow (q), D\rightarrow (p)$
  • ✓
    $A\rightarrow (r), B\rightarrow (s), C\rightarrow (q), D\rightarrow (p)$
  • C
    $A\rightarrow (s), B\rightarrow (r), C\rightarrow (p), D\rightarrow (q)$
  • D
    $A\rightarrow (r), B\rightarrow (p), C\rightarrow (q), D\rightarrow (s)$
Answer
Correct option: B.
$A\rightarrow (r), B\rightarrow (s), C\rightarrow (q), D\rightarrow (p)$
$A\rightarrow (r), B\rightarrow (s), C\rightarrow (q), D\rightarrow (p)$
View full question & answer→
MCQ 1331 Mark
Exothermic change is:
  • ✓
    Accompanied by release of energy.
  • B
    Accompanied by absorption of energy.
  • C
    A change in which heat energy is neither released nor absorbed.
  • D
    All the above.
Answer
Correct option: A.
Accompanied by release of energy.
Exothermic change is accompanied by release of energy in the form of heat and light.
View full question & answer→
MCQ 1341 Mark
Salt can be separated from its solution (salt dissolved in water), because:
  • A
    Mixing of salt in water is a change that can be reversed by heating and melting of salt.
  • B
    Mixing of salt in water is a change that cannot be reversed.
  • C
    Mixing of salt in water is a permanent change.
  • ✓
    Mixing of salt in water is a change that can be reversed by evaporation.
Answer
Correct option: D.
Mixing of salt in water is a change that can be reversed by evaporation.
Mixing of salt in water is a change that can be reversed by evaporation.
The common salt dissolved in water can be separated by the process of evaporation.
View full question & answer→
MCQ 1351 Mark
The germination of a seed is:
  • A
    A physical, reversible change in which energy is produced.
  • B
    A fast, desirable chemical reaction in which energy is released.
  • ✓
    A slow, irreversible and desirable, chemical change.
  • D
    A fast, irreversible and undesirable chemical change.
Answer
Correct option: C.
A slow, irreversible and desirable, chemical change.
The germination of seed is a slow, irreversible and desirable, chemical change.
View full question & answer→
MCQ 1361 Mark
Which of the following is an example of chemical change?
  • A
    Filling up a balloon with hot air.
  • B
    Taking a glass of water and freezing it by placing it in the freezer.
  • ✓
    A plant collecting sunlight and turning it into food.
  • D
    None of these.
Answer
Correct option: C.
A plant collecting sunlight and turning it into food.
Photosynthesis is a chemical change.
View full question & answer→
MCQ 1371 Mark
Expansion of iron on heating is which kind of change?
  • A
    Chemical.
  • B
    Desirable.
  • C
    Reversible.
  • ✓
    Both $(a)$ and $(b).$
Answer
Correct option: D.
Both $(a)$ and $(b).$
Both $(a)$ and $(b).$
View full question & answer→
MCQ 1381 Mark
An iron ring is heated. Which of the following statement about it is incorrect?
  • A
    The ring expands
  • B
    The ring almost comes to the same size on cooling
  • C
    The change in this case is reversed
  • ✓
    The ring changes its shape and the change cannot be reversed
Answer
Correct option: D.
The ring changes its shape and the change cannot be reversed
The correct statement is that when an iron ring is heated the ring expands and the change can be reversed.
View full question & answer→
MCQ 1391 Mark
A Sheela cooked rice in a rice cooker. What kind of change took place?
  1. Irreversible change.
  2. Endothermic change.
  3. Natural change.
  • ✓
    Only $(i)$ and $(ii)$
  • B
    Only $(ii)$ and $(iii)$
  • C
    Only $(i)$ and $(iii)$
  • D
    $(i), (ii)$ and $(iii)$
Answer
Correct option: A.
Only $(i)$ and $(ii)$

The cooking of rice requires heat. Once rice is cooked, we cannot get back the original raw rice. So, it is an irreversible, endothermic change.

View full question & answer→
MCQ 1401 Mark
Who of the following is correct?
Mukesh: Melting of a copper plate is a reversible change.
Rajesh: Growth in a plant is a reversible change.
  • ✓
    Mukesh.
  • B
    Rajesh.
  • C
    Both are correct.
  • D
    Both are incorrect.
Answer
Correct option: A.
Mukesh.
Mukesh.
View full question & answer→
MCQ 1411 Mark
Given below is a change that occurs in butter.

Identify $X$ and $Y$ that cause change in the state of butter.
  • A
    $X -$ Heat lost, $Y -$ Heat gained.
  • ✓
    $X -$ Heat gained, $Y -$ Heat lost.
  • C
    $X -$ Release of energy, $Y -$ Absorption of energy.
  • D
    $X -$ Decrease in temperature, $Y -$ Increase in temperature.
Answer
Correct option: B.
$X -$ Heat gained, $Y -$ Heat lost.

 Butter changes its state when it gains or loses heat.

View full question & answer→
MCQ 1421 Mark
Condensation is a physical change, why?
  • A
    Vapour turns into liquid.
  • B
    No heat is required.
  • C
    It happens automatically.
  • ✓
    No new substance is formed.
Answer
Correct option: D.
No new substance is formed.
No new substance is formed.
View full question & answer→
MCQ 1431 Mark
Directions: Read the passages given below and answer the questions that follow Passage.

What is the term used to describe the phase change of a liquid to a gas?
  • ✓
    Boiling.
  • B
    Condensation.
  • C
    Melting.
  • D
    None of the above.
Answer
Correct option: A.
Boiling.
Boiling.
View full question & answer→
MCQ 1441 Mark
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$?$
  • ✓
    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
Correct option: A.
In figure $I,$ physical change is taking place while in figure $II$ a chemical change is taking place.

In figure $I,$ evaporation of water from sugar solution is a physical change because there is only change in state of matter from liquid (sugar solution) to solid state (crystals of sugar). In figure $II,$ when sugar is heated, it turns black due to the formation of a new substance and it cannot be reversed. Therefore, it is a chemical change.

View full question & answer→
MCQ 1451 Mark
Find the odd one out:
  • A
    Permanent change.
  • ✓
    Reversible.
  • C
    Change in composition.
  • D
    Formation of new substance.
Answer
Correct option: B.
Reversible.
Permanent change, change in composition and formation of new substance all these are characteristics of a chemical changes while reversibility is not a characteristic of chemical changes.
View full question & answer→
MCQ 1461 Mark
Carefully observe the figures $A$ and $B$ below and choose the correct option.
  • A
    Both $'A'$ and $'B'$ are periodic changes.
  • ✓
    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
Correct option: B.
Both $'A'$ and $'B'$ are non-periodic change.

 Both change in phases of moon and movement of needle of clock are periodic changes.

View full question & answer→
MCQ 1471 Mark
Which one of the following is an example of chemical change?
  • ✓
    Burning of wax.
  • B
    Stretching a metal spring.
  • C
    Breaking of glass.
  • D
    All of these.
Answer
Correct option: A.
Burning of wax.
Burning of wax.
View full question & answer→
MCQ 1481 Mark
Which of the following does not take place during the tearing of a paper?
  • A
    Change of shape.
  • B
    Change of size.
  • ✓
    Change of substance.
  • D
    All of the above.
Answer
Correct option: C.
Change of substance.
The tearing of a paper shows a change in its shape and size but there is no change in the substance. Hence, it is a physical change.
View full question & answer→
MCQ 1491 Mark
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.
  • ✓
    Both tearing and burning the pieces.
  • D
    None of these.
Answer
Correct option: C.
Both tearing and burning the pieces.
Both tearing and burning the pieces.
View full question & answer→
MCQ 1501 Mark
The dissolution of salt in water is a:
  • A
    Reversible change.
  • B
    Irreversible change.
  • ✓
    Chemical change.
  • D
    Periodic change.
Answer
Correct option: C.
Chemical change.
It is a reversible change as we can get back salt from its solution by evaporating off water.
View full question & answer→
Generate Paper FreeAll Changes Around Us topics
[1 Marks Each] M.C.Q. - Page 3 - Science STD 6 Questions - Vidyadip