Explore topic-wise MCQs in Science.

This section includes 57 Mcqs, each offering curated multiple-choice questions to sharpen your Science knowledge and support exam preparation. Choose a topic below to get started.

51.

Which change among the following changes is not included in a reversible change?

A. Change it state.
B. Change of position.
C. Biological change
D. Change of colour.
E. None of these
Answer» D. Change of colour.
Discussion
52.

Which of these changes does a burning match stick undergo? (i) Endothermic reaction (ii) Exothermic reaction (iii) Chemical change

A.  Only (i) and (ii)
B.  Only (ii) and (iii)
C. Chemical change
D.  (i), (ii) and (iii)
Answer» C. Chemical change
Discussion
53.

A change is called physical change because in it

A. only change in physical properties takes place
B. transfer of energy takes place
C.  Over ripening of fruits
D. All of the above
Answer» B. transfer of energy takes place
Discussion
54.

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. Which one of the following examples in volves both chemical and physical changes?

A. Cutting of wood
B. Melting of ice
C. a change in state of matter
D. Burning of paper
Answer» D. Burning of paper
Discussion
55.

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

A. Making tea
B. Burning of sulphur
C. Cooking of food.
D. Burning of coal
Answer» D. Burning of coal
Discussion
56.

Rusting of iron is an example of:

A. Reversible change   
B. Irreversible change
C. Reversible 
D. No change
E. None of these
Answer» C. Reversible 
Discussion
57.

Which of the following' is incorrect about physical changes?

A. No new substance is formed.
B. Are reversible changes.
C.  a slow, irreversible and desirable, chemical change.
D. Are irreversible changes.
E. None of these
Answer» E. None of these
Discussion