CBSE 10 Science Question paper-2020 Set-4 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-2020 Set-4
CBSE 10 Science Question paper-2020 Set-4

CBSE 10 Science Question paper-2020 Set-4

This mock test includes actual CBSE Class 10 Science board exam questions from the year 2020 Set 4, helping students understand exam trends and practice real paper formats.

2025-07-28
Pavan Pavan
CBSE Class 10 Science 2020 Grade 10

Duration

30 min

Questions

30

Marking

Negative

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

Questions Preview

Why are covalent compounds generally poor conductors of electricity?

A
Because they do not have free electrons or ions
B
Because they have a high boiling point
C
Because they are non-polar
D
Because they only exist in solid form

What is the common characteristic of Boron, Silicon, Germanium, and Arsenic?

A
They are metalloids
B
They are metals
C
They are non-metals
D
They are alkali metals

What is the Periodic Law on which the Modern Periodic Table is based?

A
The physical and chemical properties of elements are periodic functions of their atomic numbers.
B
The atomic mass of elements determines their properties.
C
The atomic radius increases across a period.
D
The valency of elements is the defining characteristic.

What is the primary function of the thyroid stimulating hormone (TSH)?

A
To stimulate the thyroid gland to produce thyroxine
B
To regulate the heartbeat
C
To control the release of insulin
D
To regulate calcium levels in the blood

What is the function of a solar cell?

A
To convert light energy into electrical energy
B
To store electrical energy
C
To convert mechanical energy into light energy
D
To regulate energy production in power plants

Why is it important to monitor TSH levels during pregnancy?

A
Because high TSH levels can affect the chances of miscarriage
B
Because TSH levels increase the chances of twins
C
Because low TSH levels cause excessive hair growth
D
Because high TSH levels are essential for a healthy pregnancy

What is the correct full form of TSH?

A
Thyroid Stimulating Hormone
B
Testosterone Stimulating Hormone
C
Thymus Stimulating Hormone
D
Triiodothyronine Stimulating Hormone

What is the role of a solar cell in energy generation?

A
Solar cells convert sunlight directly into electricity
B
Solar cells store sunlight and release it when needed
C
Solar cells convert mechanical energy into electrical energy
D
Solar cells regulate the temperature of electrical devices

How much electricity can be produced by one typical solar cell when exposed to the Sun?

A
Around 1.5 watts
B
Around 5 watts
C
Around 10 watts
D
Around 15 watts

What is the future outlook for solar energy in India?

A
The future is bright because of abundant sunlight and government support
B
The future is uncertain due to the high cost of solar panels
C
Solar energy production will decrease as fossil fuels become cheaper
D
India's solar energy production will be limited to remote areas only

Which of the following is the main disadvantage of solar cells?

A
High cost of installation
B
They cannot store energy
C
They require high maintenance
D
They only work at night

How does solar energy compare to other forms of energy in terms of environmental impact?

A
Solar energy has a minimal environmental impact compared to fossil fuels
B
Solar energy produces more waste than nuclear energy
C
Solar energy requires significant deforestation for large installations
D
Solar energy requires the burning of fossil fuels to generate electricity

What is one advantage of using solar energy in India?

A
Solar energy is sustainable and abundant in India
B
Solar energy is cheaper than all other forms of energy
C
Solar energy can generate electricity even during the monsoon season
D
Solar energy reduces the need for fossil fuels in India

Which of the following is NOT a characteristic of metalloids?

A
They are good conductors of electricity
B
They are found between metals and non-metals in the periodic table
C
They have properties of both metals and non-metals
D
They are used in semiconductors

What is the main advantage of wind energy over solar energy?

A
Wind energy can be generated 24 hours a day, unlike solar energy
B
Wind energy is more affordable than solar energy
C
Wind energy is easier to maintain than solar energy
D
Wind energy is more environmentally friendly

What is the primary use of nuclear energy?

A
To generate electricity
B
To power automobiles
C
To heat homes
D
To power mobile phones

What is the primary function of the pancreas in the human body?

A
To regulate blood sugar levels by secreting insulin
B
To help with digestion by producing digestive enzymes
C
To produce red blood cells
D
To store bile for digestion

What is the typical range of TSH levels in a normal pregnant woman during the first trimester?

A
0.2 – 2.5 mU/L
B
0.3 – 3.0 mU/L
C
0.8 – 5.2 mU/L
D
1.0 – 3.5 mU/L

What is the main reason for monitoring TSH levels during pregnancy?

A
To prevent miscarriage and regulate thyroid function
B
To avoid complications related to blood pressure
C
To ensure proper calcium levels in the blood
D
To monitor the development of the fetus

What is the full form of TSH?

A
Thyroid Stimulating Hormone
B
Testosterone Stimulating Hormone
C
Toxin Stimulating Hormone
D
Toxic Substance Hormone

What is the ideal temperature for solar cells to operate most efficiently?

A
20°C to 25°C
B
50°C to 60°C
C
10°C to 15°C
D
30°C to 40°C

How does a nuclear reactor generate electricity?

A
By using uranium to produce heat, which is then used to generate steam
B
By using wind turbines to generate power
C
By using solar panels to convert sunlight into electricity
D
By converting chemical energy into electrical energy

What is the primary drawback of using wind energy?

A
Wind turbines are noisy and can be a threat to bird populations
B
Wind turbines are not efficient in areas with little wind
C
Wind energy produces high amounts of carbon emissions
D
Wind turbines require large amounts of water to operate

What is the first step in the process of nuclear fission?

A
A neutron strikes a uranium atom, causing it to split
B
Energy from the sun is absorbed by the nuclear reactor
C
The uranium atom undergoes fusion
D
A chemical reaction releases energy from uranium

What is the advantage of using nuclear energy compared to fossil fuels?

A
Nuclear energy produces less pollution and greenhouse gases
B
Nuclear energy is cheaper to produce than coal or oil
C
Nuclear energy is renewable
D
Nuclear energy requires no infrastructure

What is a key limitation of wind energy?

A
Wind turbines are not reliable in areas with little wind
B
Wind energy is too expensive to generate
C
Wind turbines produce a lot of noise
D
Wind turbines do not work at night

What does solar power generation depend on?

A
The amount of sunlight available during the day
B
The temperature of the environment
C
The air quality in the area
D
The wind speed

What material is most commonly used in solar cells?

A
Silicon
B
Copper
C
Lead
D
Aluminum

What is the main issue with using coal as an energy source?

A
It causes significant air pollution and greenhouse gas emissions
B
Coal is too expensive to mine
C
Coal is too difficult to transport
D
Coal is not readily available

How can we reduce the negative environmental impact of fossil fuels?

A
By using cleaner energy sources like solar, wind, and hydropower
B
By increasing the use of natural gas
C
By using coal more efficiently
D
By using more oil