Indian National Science Olympiad (NSO)

Description: This quiz is based on the Indian National Science Olympiad (NSO), a prestigious competition for students in India. The questions cover various topics in science, including physics, chemistry, biology, and mathematics.
Number of Questions: 15
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Tags: nso science olympiad physics chemistry biology mathematics
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Which of the following is not a fundamental force in physics?

  1. Gravitational force

  2. Electromagnetic force

  3. Strong nuclear force

  4. Weak nuclear force

  5. Centrifugal force


Correct Option: E
Explanation:

Centrifugal force is not a fundamental force in physics. It is an inertial force that arises due to the rotation of a reference frame.

What is the chemical formula for water?

  1. H2O

  2. CO2

  3. NaCl

  4. CH4

  5. NH3


Correct Option: A
Explanation:

The chemical formula for water is H2O, which means that each molecule of water contains two hydrogen atoms and one oxygen atom.

Which of the following is not a part of the cell membrane?

  1. Phospholipids

  2. Proteins

  3. Carbohydrates

  4. Nucleic acids

  5. Cholesterol


Correct Option: D
Explanation:

Nucleic acids are not a part of the cell membrane. They are found in the nucleus of the cell and are responsible for storing and transmitting genetic information.

What is the largest planet in our solar system?

  1. Jupiter

  2. Saturn

  3. Uranus

  4. Neptune

  5. Mars


Correct Option: A
Explanation:

Jupiter is the largest planet in our solar system, with a mass that is more than twice the mass of all the other planets combined.

What is the name of the mathematical operation that is the inverse of addition?

  1. Subtraction

  2. Multiplication

  3. Division

  4. Exponentiation

  5. Logarithm


Correct Option: A
Explanation:

Subtraction is the mathematical operation that is the inverse of addition. When you add two numbers, you are combining them to get a total. When you subtract one number from another, you are taking away a part of the total to get the difference.

Which of the following is not a type of chemical bond?

  1. Ionic bond

  2. Covalent bond

  3. Metallic bond

  4. Hydrogen bond

  5. Van der Waals bond


Correct Option: D
Explanation:

Hydrogen bonds are not a type of chemical bond. They are a type of intermolecular force that occurs between molecules that have a hydrogen atom bonded to a highly electronegative atom, such as oxygen or nitrogen.

What is the name of the process by which plants convert sunlight into energy?

  1. Photosynthesis

  2. Cellular respiration

  3. Fermentation

  4. Glycolysis

  5. Krebs cycle


Correct Option: A
Explanation:

Photosynthesis is the process by which plants convert sunlight into energy. This process takes place in the chloroplasts of plant cells, where chlorophyll molecules absorb sunlight and use it to convert carbon dioxide and water into glucose and oxygen.

Which of the following is not a type of electromagnetic radiation?

  1. Visible light

  2. Ultraviolet radiation

  3. Infrared radiation

  4. X-rays

  5. Gamma rays


Correct Option: E
Explanation:

Gamma rays are not a type of electromagnetic radiation. They are a type of ionizing radiation that is produced by the decay of atomic nuclei.

What is the name of the mathematical operation that is the inverse of multiplication?

  1. Division

  2. Subtraction

  3. Addition

  4. Exponentiation

  5. Logarithm


Correct Option: A
Explanation:

Division is the mathematical operation that is the inverse of multiplication. When you multiply two numbers, you are combining them to get a product. When you divide one number by another, you are finding out how many times the second number goes into the first number.

Which of the following is not a part of the human digestive system?

  1. Stomach

  2. Small intestine

  3. Large intestine

  4. Pancreas

  5. Liver


Correct Option: E
Explanation:

The liver is not a part of the human digestive system. It is a vital organ that performs a variety of functions, including filtering toxins from the blood, producing bile, and storing energy.

What is the name of the mathematical operation that is the inverse of exponentiation?

  1. Logarithm

  2. Division

  3. Multiplication

  4. Subtraction

  5. Addition


Correct Option: A
Explanation:

Logarithm is the mathematical operation that is the inverse of exponentiation. When you exponentiate a number, you are raising it to a power. When you take the logarithm of a number, you are finding out what power you need to raise the base number to in order to get the given number.

Which of the following is not a type of chemical reaction?

  1. Synthesis reaction

  2. Decomposition reaction

  3. Single-replacement reaction

  4. Double-replacement reaction

  5. Combustion reaction


Correct Option: E
Explanation:

Combustion reactions are not a type of chemical reaction. They are a type of exothermic reaction in which a substance reacts with oxygen to produce heat and light.

What is the name of the mathematical operation that is the inverse of taking the square root?

  1. Squaring

  2. Cubing

  3. Taking the fourth root

  4. Taking the fifth root

  5. Taking the sixth root


Correct Option: A
Explanation:

Squaring is the mathematical operation that is the inverse of taking the square root. When you take the square root of a number, you are finding out what number you need to multiply by itself to get the given number. When you square a number, you are multiplying it by itself.

Which of the following is not a part of the human respiratory system?

  1. Lungs

  2. Trachea

  3. Bronchi

  4. Bronchioles

  5. Alveoli


Correct Option: E
Explanation:

Alveoli are not a part of the human respiratory system. They are a part of the human circulatory system.

What is the name of the mathematical operation that is the inverse of taking the cube root?

  1. Cubing

  2. Taking the fourth root

  3. Taking the fifth root

  4. Taking the sixth root

  5. Taking the seventh root


Correct Option: A
Explanation:

Cubing is the mathematical operation that is the inverse of taking the cube root. When you take the cube root of a number, you are finding out what number you need to multiply by itself three times to get the given number. When you cube a number, you are multiplying it by itself three times.

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