CBSE 10 Science Question Paper-2023 Set-2 by Pavan | Practice Test to Test Your Knowledge
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  2. Practice Tests
  3. CBSE 10 Science Question Paper-2023 Set-2
CBSE 10 Science Question Paper-2023 Set-2

CBSE 10 Science Question Paper-2023 Set-2

This mock test includes actual CBSE Class 10 Science board exam questions from the year 2023 set 2, helping students understand exam trends and practice real paper formats

2025-07-30
Pavan Pavan
CBSE Class 10 Science 2023 Grade 10

Duration

30 min

Questions

30

Marking

Negative

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Questions Preview

Select a pair of olfactory indicators from the following:

A
Clove oil and vanilla essence
B
Onion and turmeric
C
Clove oil and litmus solution
D
Vanilla and methyl orange

The balanced chemical equation showing reaction between quicklime and water is:

A
2 CaO + H2O → 2 CaOH + H2 + Heat
B
CaO + H2O → Ca(OH)2 + H2 + Heat
C
CaO + H2O → Ca(OH)2 + Heat
D
2 CaO + 3 H2O → 2 Ca(OH)3 + O2 + Heat

The reducing agent in the following reaction 2 Na (s) + 2 H2O (l) → 2 NaOH (aq) + H2 (g) is:

A
Na
B
H2O
C
NaOH
D
H2

Which of the following statements is true for an amphoteric oxide?

A
It reacts only with acid and does not form water.
B
It reacts with acid as well as base to form salt and hydrogen gas.
C
It reacts with both acid as well as base to form salt and water.
D
It reacts only with base and does not form water.

The correct representation of covalent bonding in an oxygen molecule is:

A
O=O
B
O—O
C
O:O
D
O-O

The pH of fresh milk is 6. To delay its curdling, a chemical substance is added to it, which is:

A
Sodium carbonate
B
Baking powder
C
Sodium hydroxide (Caustic soda)
D
Baking soda (Sodium hydrogen carbonate)

Hydronium ions are formed by the reaction between:

A
Sodium hydroxide and water
B
Calcium chloride and water
C
Hydrogen chloride gas and water
D
Ethanol and water

The part in which gustatory receptors are present in our body is:

A
Inner ear
B
Skin
C
Tongue
D
Inner lining of nose

Which of the following statements is true for an amphoteric oxide?

A
It reacts only with acid and does not form water.
B
It reacts with acid as well as base to form salt and hydrogen gas.
C
It reacts with both acid as well as base to form salt and water.
D
It reacts only with base and does not form water.

The bacterial and viral infections that may be caused due to unsafe sex respectively are:

A
Warts and HIV-AIDS
B
HIV-AIDS and Warts
C
Gonorrhoea and Syphilis
D
Syphilis and Warts

The following reaction takes place in the human body, which of the following best describes the enzyme responsible for this?

A
Amylase
B
Protease
C
Lipase
D
Catalase

Which part of the human body is responsible for filtering blood?

A
Liver
B
Kidneys
C
Lungs
D
Heart

The principle of the law of inertia was proposed by which scientist?

A
Isaac Newton
B
Albert Einstein
C
Galileo Galilei
D
Michael Faraday

What is the main function of the circulatory system in humans?

A
To transport oxygen and nutrients
B
To produce blood cells
C
To regulate body temperature
D
To filter toxins

Which of the following is the most abundant gas in Earth's atmosphere?

A
Oxygen
B
Carbon Dioxide
C
Nitrogen
D
Argon

Which of the following is true about the process of photosynthesis?

A
It occurs in the mitochondria
B
It requires oxygen
C
It produces glucose and oxygen
D
It occurs in the chloroplasts of plant cells

What is the primary function of the roots in plants?

A
Photosynthesis
B
Water and mineral absorption
C
Reproduction
D
Support

Which of the following is a method of asexual reproduction?

A
Binary fission
B
Pollination
C
Cross-fertilization
D
Meiosis

What is the correct order of the organs involved in the human digestive system?

A
Mouth → Esophagus → Stomach → Small intestine → Large intestine
B
Mouth → Large intestine → Small intestine → Stomach → Esophagus
C
Esophagus → Mouth → Small intestine → Stomach → Large intestine
D
Stomach → Mouth → Small intestine → Large intestine → Esophagus

What is the main role of the chlorophyll in plants?

A
To absorb sunlight for photosynthesis
B
To absorb water from the soil
C
To transport nutrients
D
To produce oxygen

What is the function of the red blood cells?

A
To carry oxygen to all parts of the body
B
To produce insulin
C
To fight infections
D
To transport nutrients

The force that pulls objects towards the center of the Earth is called:

A
Magnetic force
B
Frictional force
C
Gravitational force
D
Elastic force

Which gas is primarily responsible for the greenhouse effect?

A
Oxygen
B
Carbon dioxide
C
Nitrogen
D
Hydrogen

The process in which plants lose water through their leaves is known as:

A
Transpiration
B
Respiration
C
Evaporation
D
Absorption

Which part of the brain controls involuntary actions like heartbeat and breathing?

A
Cerebellum
B
Cerebrum
C
Medulla
D
Hypothalamus

Which of the following is the unit of electric current?

A
Volt
B
Ohm
C
Ampere
D
Watt

What type of energy does a moving car have?

A
Potential energy
B
Kinetic energy
C
Chemical energy
D
Thermal energy

Which of the following is the correct unit for energy?

A
Joule
B
Newton
C
Watt
D
Ampere

Which type of chemical bond is formed by the transfer of electrons?

A
Covalent bond
B
Ionic bond
C
Metallic bond
D
Hydrogen bond

Which part of the eye is responsible for focusing light onto the retina?

A
Cornea
B
Pupil
C
Lens
D
Retina