Science Quiz For Class 9
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In this class, we covered matters and what it entails. The Science quiz for class 9 below includes questions ranging from easy, medium, and hard levels that will help you get conceptual clarity. Dive into the intriguing world of science with our thoughtfully curated Class 9 Science Quiz. Designed to spark curiosity and challenge young minds, this quiz encompasses a broad spectrum of scientific disciplines.
Each question serves as a gateway to understanding fundamental concepts and their practical applications. Tailored for Class 9 students, this quiz is a captivating blend of education and assessment. Test your knowledge, stimulate critical thinking, Read moreand unravel the mysteries that science holds.
With a focus on enriching learning experiences, this quiz is not just a test but a voyage through the captivating realms of scientific inquiry. Join us on this intellectual exploration, and let the quest for knowledge illuminate your scientific path. Give them a try and see how high you score. If you like this quiz, share it with your friends. All the best!
Science For Class 9 Questions and Answers
- 1.
Distance is a ________________ quantity.
- A.
Scalar
- B.
Vector
Correct Answer
A. ScalarExplanation
Distance is a scalar quantity because it only has magnitude and no directional component. Scalars are quantities that can be completely described by their magnitude alone, such as temperature or mass. In contrast, vectors have both magnitude and direction, like velocity or displacement. Since distance is simply the length between two points, it does not have a specific direction associated with it, making it a scalar quantity.Rate this question:
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- 2.
Displacement is a ________________ quantity.
- A.
Vector
- B.
Scalar
Correct Answer
A. VectorExplanation
Displacement is a vector quantity because it has both magnitude and direction. It represents the change in position of an object from its initial position to its final position. Magnitude refers to the length or size of the displacement, while direction indicates the path or angle of the displacement. Scalars, on the other hand, only have magnitude and no direction.Rate this question:
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- 3.
Speed is a ________________ quantity.
- A.
Vector
- B.
Scaler
Correct Answer
B. ScalerExplanation
Speed is a scalar quantity because it only has magnitude and no direction. Scalar quantities are described by a single value, such as speed, temperature, or mass, without any information about the direction in which they occur. In contrast, vector quantities have both magnitude and direction, like velocity or force. Since speed only represents the magnitude of motion without specifying a direction, it is considered a scalar quantity.Rate this question:
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- 4.
Displacement can be 0.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
The statement "Displacement = 0" is true because displacement is a vector quantity that measures the change in position of an object from its initial position to its final position. When the displacement is zero, it means that the object has not moved or has returned to its original position.Rate this question:
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- 5.
Which non-metal is the most reactive?
- A.
Fluorine
- B.
Oxygen
- C.
Carbon
- D.
Lead
Correct Answer
A. FluorineExplanation
Fluorine is the most reactive element. It is the most electronegative element, meaning it has a strong tendency to gain electrons from other elements. Fluorine's high reactivity is due to its small atomic size coupled with a high effective nuclear charge, which strongly attracts electrons from other substances.Rate this question:
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- 6.
If a body covers a full circle, then the displacement is:
- A.
1
- B.
0
- C.
Distance
- D.
Not sufficient data
Correct Answer
B. 0Explanation
If a body covers a full circle, it means that it returns to its original position. Displacement refers to the change in position from the initial to the final position. In this case, since the body ends up at the same position where it started, there is no change in position and therefore the displacement is zero.Rate this question:
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- 7.
Which of the following is the most ductile element?
- A.
Iron
- B.
Copper
- C.
Gold
- D.
Carbon
Correct Answer
C. GoldExplanation
Gold is widely recognized as the most ductile element. Ductility refers to the ability of a material to be stretched into a thin wire without breaking. Gold's remarkable ductility stems from its atomic structure, which allows its atoms to slide past each other easily under stress without losing their cohesive bonds.Rate this question:
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- 8.
What state of matter is ice found in?
- A.
Solid
- B.
Liquid
- C.
Gas
- D.
Plasma
Correct Answer
A. SolidExplanation
Ice is a solid because it is the frozen form of water. At temperatures below zero degrees Celsius, water molecules slow down and form a rigid, crystalline structure, resulting in the solid state of ice. In this state, the molecules are closely packed together and have a fixed shape and volume.Rate this question:
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- 9.
Plasma consists _________ particles.
- A.
Energetic/excited
- B.
Dull
- C.
Tightly packed
- D.
Loosely packed
Correct Answer
A. Energetic/excitedExplanation
Plasma consists of energetic/excited particles. Plasma is the fourth state of matter, in which atoms are ionized, and their electrons are free to move. These free electrons gain energy and become excited, leading to the presence of highly energetic particles in plasma.Rate this question:
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- 10.
What is the latent heat of fusion of ice?
Correct Answer
336 kJ/kg, 33600 J/kgExplanation
The latent heat of fusion of ice is the amount of heat energy required to convert a unit mass of ice at its melting point into water at the same temperature, without any change in temperature. In this case, the correct answer is 333.55 kJ/kg, which means that 333.55 kilojoules of heat energy are needed to convert 1 kilogram of ice into water at its melting point.Rate this question:
- 11.
Which of the following is not a noble gas?
- A.
Neon
- B.
Argon
- C.
Krypton
- D.
Chlorine
Correct Answer
D. ChlorineExplanation
Noble gases are a group of chemical elements with very similar properties; they are all odorless, colorless, monatomic gases with very low chemical reactivity. The noble gases include helium, neon, argon, krypton, xenon, and radon, and they are located in the far right column (Group 18) of the periodic table. Chlorine, on the other hand, is not a noble gas. It is a halogen, which belongs to Group 17 of the periodic table. Chlorine is a highly reactive element, commonly used in the production of disinfectants and plastics. Unlike noble gases, chlorine forms various compounds through its ability to gain an electron, achieving a stable electronic configuration.Rate this question:
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- 12.
ER helps in detoxification:
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
ER stands for endoplasmic reticulum, which is an organelle found in cells. The endoplasmic reticulum plays a crucial role in detoxification processes within the cell. It is responsible for the synthesis and modification of lipids and proteins, as well as the detoxification and metabolism of drugs and toxins.Rate this question:
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- 13.
Golgi apparatus helps in cell division.
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
The Golgi apparatus does not aid in cell division. The Golgi apparatus is primarily involved in the processing, packaging, and distribution of proteins and lipids within the cell. It plays a crucial role in the secretion of these molecules to their appropriate destinations. However, cell division is primarily controlled by other organelles, such as the nucleus, centrosomes, and the spindle apparatus. These organelles are responsible for processes such as DNA replication, chromosome segregation, and cytokinesis, which are essential for cell division.Rate this question:
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- 14.
Ribosomes make __________.
- A.
Lipids
- B.
Fats
- C.
Proteins
- D.
Starch
Correct Answer
C. ProteinsExplanation
Ribosomes are responsible for protein synthesis. They are small organelles found in cells that read the genetic code from the DNA and use it to assemble amino acids into proteins. Proteins are essential for various cellular functions, including cell structure, enzymes, and signaling molecules.Rate this question:
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- 15.
SER involves Storage.
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
The statement that SER involves storage is false. SER stands for Single Event Upset, which refers to the phenomenon where a single particle or energy pulse can cause a temporary change in the state of a storage element, such as a flip-flop or memory cell, leading to an error in the stored data. However, SER itself does not involve storage directly, but rather the susceptibility of storage elements to external disturbances.Rate this question:
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Current Version
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Apr 29, 2024Quiz Edited by
ProProfs Editorial Team
Expert Reviewed by
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Jun 03, 2012Quiz Created by
Ritick
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