CBSE Class 6 Science Changes Around Us MCQs Set A

CBSE Class 6 Science Changes Around Us MCQs Set A with answers available in Pdf for free download. The MCQ Questions for Class 6 Science with answers have been prepared as per the latest 2021 syllabus, NCERT books and examination pattern suggested in Standard 6 by CBSE, NCERT and KVS. Multiple Choice Questions for important part of exams for Grade 6 Science and if practiced properly can help you to get higher marks. Refer to more Chapter wise MCQs for NCERT Class 6 Science and also download more latest study material for all subjects

Changes Around Us

 

1. _____ is an irreversible change.

Class 6 Science MCQs-Changes around us

a. Burning of coal  

b. Melting of wax

c. Melting of ice

d. Formation of ice

 

2. Which of the following is an irreversible change:

a. A toy aeroplane made by folding paper

Class 6 Science MCQs-Changes around us

b. A roti

Class 6 Science MCQs-Changes around us

c. A balloon changes its size and shape on blowing air into it

d. Melting of wax

 

3. Which of the following is not an example of the changes that occur by mixing two substances?

a. Salt dissolved in water

b. Mixing sand and water

c. Sugar dissolved in water

d. Burning of a matchstick


4. A bag of cement lying in the open gets wet due to rain during the night. The next day the sun shines brightly. Do you think the changes, which have occurred in the cement, could be reversed?

a. Yes

b. No

c. Can’t say

d. All of theabove

 

More Questions...................

 

Question: Physical chemical changes are a result of absorption of

  • a) some kind of energy
  • b) light energy only
  • c) heat energy only
  • d) sound energy only

Answer: some kind of energy


Question: A chemical change involves

  • a) change of state as well as composition
  • b) change of state only
  • c) change of colour only
  • d) None of these

Answer: change of state as well as composition


Question: A physical change is a/an :

  • a) temporary change
  • b) irreversible change
  • c) permanent change
  • d) None of these

Answer: temporary change


Question: An example of a physical change is

  • a) magnetisation of iron
  • b) photosynthesis by plants
  • c) burning of wood
  • d) digestion of food

Answer: magnetisation of iron


Question: An example of a chemical change is

  • a) exposure of a photographic plate
  • b) melting of sulphur
  • c) tearing of paper
  • d) formation of dew

Answer: exposure of a photographic plate


Question: An example of an undesirable change is

  • a) earthquake
  • b) melting of snow on mountains
  • c) evaporation of water
  • d) flowering of plants

Answer: earthquake


Question: An example of a periodic change is

  • a) swinging of a clock pendulum
  • b) rusting of iron
  • c) landslides during rains
  • d) sneezing

Answer: swinging of a clock pendulum


Question: During physical and chemical changes

  • a) energy is either absorbed or released
  • b) energy is always released
  • c) energy is always absorbed
  • d) no energy is absorbed or released

Answer: energy is either absorbed or released


Question: A change is an alteration in the physical and chemical properties of matter due to the effect of :

  • a) some kind of energy
  • b) light
  • c) heat
  • d) pressure

Answer: some kind of energy


Question: Physical changes are

  • a) temparary and can be reversed
  • b) irreversible
  • c) permanent
  • d) temporary and irreversible

Answer: temparary and can be reversed

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