CBSE 10 Science Question Paper-2017 by Pavan | Practice Test to Test Your Knowledge
Students

Academic Programs

AI-powered learning for grades 8-12, aligned with major curricula

Engineering Courses
Professional

Professional Courses

Industry-relevant training in Business, Technology, and Design

Certifications
Games

Interactive Games

Fun games to boost memory, math, typing, and English skills

  2. Practice Tests
  3. CBSE 10 Science Question Paper-2017
CBSE 10 Science Question Paper-2017

CBSE 10 Science Question Paper-2017

This mock test includes actual CBSE Class 10 Science board exam questions from the year 2016, helping students understand exam trends and practice real paper formats.

2025-07-26
Pavan Pavan
CBSE Class 10 Science 2017 Grade 10

Duration

30 min

Questions

20

Marking

Negative

You've not yet enrolled in this practice test. Please login to start practice test.

Questions Preview

What is the molecular formula of the first two members of the homologous series with the functional group –OH?

A
C2H5OH, C3H7OH
B
C2H4OH, C3H6OH
C
CH3OH, C2H5OH
D
C3H7OH, C4H9OH

How does Planaria reproduce? Is this method sexual or asexual?

A
By binary fission, asexual
B
By budding, asexual
C
By spore formation, asexual
D
By sexual reproduction

Why is a lake considered to be a natural ecosystem?

A
Because it is a self-sustaining system with biotic and abiotic components.
B
Because it is artificially constructed.
C
Because it only contains biotic components.
D
Because it has no interactions with the environment.

What are the four characteristics of the image formed by a concave mirror when an object is placed 40 cm in front of it?

A
Inverted, real, diminished, and formed between F and P.
B
Erect, virtual, enlarged, and formed beyond C.
C
Inverted, real, enlarged, and formed beyond C.
D
Erect, real, diminished, and formed at F.

Why is sustainable management of natural resources necessary? Why is reuse better as compared to recycling?

A
It prevents depletion of resources and reduces environmental impact. Reuse requires less energy compared to recycling.
B
It reduces resource extraction. Reuse leads to more waste generation compared to recycling.
C
It prevents environmental pollution. Recycling is always better than reuse.
D
It helps in increasing the resource base. Reuse is less effective than recycling.

What is meant by wildlife? How is it important for us?

A
Wildlife refers to undomesticated animals and plants. It is important for maintaining biodiversity and ecosystem balance.
B
Wildlife is only about animals. It is important for food and medicinal purposes.
C
Wildlife includes only endangered species. It helps in aesthetic and recreational purposes.
D
Wildlife refers to natural resources. It is important for tourism and income generation.

Complete the following chemical equations: (i) C2H5OH + NaOH → ? (ii) CH3COOH + NaOH → ? (iii) C6H5OH + NaOH → ?

A
Ethanol, Acetic acid, Phenol react to form respective salts.
B
Ethanol reacts with sodium to form sodium ethoxide.
C
Acetic acid and sodium hydroxide form sodium acetate.
D
Phenol forms sodium phenoxide with sodium hydroxide.

The molecular formula of two carbon compounds are C4H8 and C3H6. Which one of these is most likely to show an addition reaction? Justify your answer.

A
C3H6, as it is an alkene and can undergo an addition reaction.
B
C4H8, as it is an alkene and can undergo an addition reaction.
C
Both can undergo addition reactions.
D
Neither of them can undergo addition reactions.

Write the names given to the vertical columns and horizontal rows in the Modern Periodic Table. How does the metallic character of elements vary on moving down a vertical column?

A
Groups and Periods. Metallic character increases down a group.
B
Columns and Rows. Metallic character decreases down a group.
C
Columns and Rows. Metallic character remains constant.
D
Periods and Groups. Metallic character increases from top to bottom.

An element P (atomic number 20) reacts with an element Q (atomic number 17) to form a compound. Write the position of P and Q in the Modern Periodic Table and the molecular formula of the compound formed when P reacts with Q.

A
P is in Group 2, Q is in Group 17. The formula is P2Q.
B
P is in Group 1, Q is in Group 17. The formula is PQ.
C
P is in Group 2, Q is in Group 17. The formula is PQ2.
D
P is in Group 2, Q is in Group 16. The formula is P2Q.

How did Mendel’s experiments show that different traits are inherited independently?

A
By using pea plants and observing the inheritance of distinct traits in different generations.
B
By observing the variation in a single trait across different species.
C
By combining dominant traits to show the inheritance patterns.
D
By using artificial selection to combine traits.

What happens when Planaria gets cut into many pieces?

A
Each piece regenerates into a new organism.
B
The pieces decompose and do not regenerate.
C
The pieces fuse to form one organism.
D
Only the head regenerates.

What is the difference between acquired and inherited traits?

A
Inherited traits are passed down from parents, while acquired traits are developed during an organism's lifetime.
B
Inherited traits are environmental, while acquired traits are genetic.
C
Acquired traits are passed down from parents, while inherited traits are learned.
D
There is no difference; they are the same.

How do homologous organs provide evidence for evolution?

A
They show that different species evolved from a common ancestor.
B
They suggest that species have not evolved.
C
They demonstrate that traits are acquired through natural selection.
D
They show similarities in the environmental adaptation of species.

How does the distance of an object from the human eye affect the eye's accommodation?

A
The eye lens becomes more convex to focus on near objects and flatter for distant objects.
B
The eye lens becomes more concave to focus on near objects and convex for distant objects.
C
The lens thickens for distant objects and thins for near objects.
D
The lens always remains at a fixed shape regardless of object distance.

What is the focal length of a concave mirror when the image is formed at 60 cm and the object is placed at 30 cm?

A
Focal length = 20 cm
B
Focal length = 10 cm
C
Focal length = 15 cm
D
Focal length = 30 cm

What happens when sporangia of Rhizopus bursts?

A
It releases spores into the air, starting new growth.
B
The spores die and no new growth occurs.
C
It begins to form new sporangia immediately.
D
It regenerates from the spores.

Why do soaps not form lather in hard water?

A
Because hard water contains calcium and magnesium ions that react with soap.
B
Because soaps are not effective in hard water.
C
Because hard water contains high levels of soap.
D
Because soap dissolves too quickly in hard water.

What is the importance of ozone layer protection for the environment?

A
To protect living organisms from harmful UV radiation.
B
To increase atmospheric temperatures.
C
To allow for more sunlight to reach the Earth.
D
To support the greenhouse effect.

What is the difference between soaps and detergents?

A
Soaps are made from natural fats, while detergents are synthetic.
B
Soaps work better in hard water than detergents.
C
Soaps contain more chemicals than detergents.
D
Soaps are less effective in water than detergents.