Science Grade 10 Midterm Review

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Science Grade 10 Midterm Review - Quiz

Just a quiz to see what u guys know


Questions and Answers
  • 1. 

    The Mitochondrion is the...

    • A.

      Storage for the cell

    • B.

      Power house of the cell

    • C.

      Structual support of the cell

    • D.

      Brain of the cell

    Correct Answer
    B. Power house of the cell
    Explanation
    The mitochondrion is often referred to as the "powerhouse of the cell" because it is responsible for producing energy in the form of ATP through cellular respiration. It contains enzymes and proteins that play a crucial role in the metabolic processes of the cell, converting nutrients into usable energy. This energy is essential for various cellular activities, including growth, movement, and reproduction. Therefore, the mitochondrion is rightly considered the power source or energy generator of the cell.

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  • 2. 

    Anaphase is the thrid phase of mitosis

    • A.

      False

    • B.

      True

    Correct Answer
    B. True
    Explanation
    Anaphase is indeed the third phase of mitosis. During anaphase, the sister chromatids separate and move towards opposite ends of the cell. This is a crucial step in cell division as it ensures that each new cell receives the correct number of chromosomes. Therefore, the statement "Anaphase is the third phase of mitosis" is true.

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  • 3. 

    The Diaphragm of a microscope does...

    • A.

      Seperates the ocular lens from the objective lens

    • B.

      Holds the objective lens

    • C.

      Moves the stage up or down to focus on the specimen

    • D.

      Supplies the lights that passes through the specimen

    • E.

      Allows light to pass through the specimen

    Correct Answer
    E. Allows light to pass through the specimen
    Explanation
    The diaphragm of a microscope allows light to pass through the specimen. This is an important function because it helps to illuminate the specimen, making it easier to view and analyze under the microscope. By adjusting the diaphragm, the amount of light passing through the specimen can be controlled, allowing for better visibility and clarity of the specimen.

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  • 4. 

    Kidney, bladder, ureter urethra and ________ are part of the Exvreatory (urinary) system.

    Correct Answer
    Skin
    skin
    Explanation
    The kidneys, bladder, ureter, urethra, and skin are all part of the excretory (urinary) system. The skin plays a role in excretion by eliminating waste products through sweat glands. It helps regulate body temperature and remove toxins from the body. Therefore, the inclusion of "Skin" as part of the excretory system is accurate.

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  • 5. 

    The Integumentary system if for the purpose of _______?*One word answer

    Correct Answer
    Protection
    protection
    Explanation
    The integumentary system is responsible for protection. It acts as a barrier between the internal organs and the external environment, preventing the entry of harmful substances such as bacteria, viruses, and chemicals. The skin, hair, and nails are the main components of this system, providing physical protection against injuries, UV radiation, and temperature changes. Additionally, the integumentary system also helps regulate body temperature, excrete waste products through sweat, and synthesize vitamin D.

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  • 6. 

    Lysosomes are organelles where ________ takes place.

    Correct Answer
    Digestion
    digestion
    Explanation
    Lysosomes are organelles where digestion takes place. They contain enzymes that break down various molecules, such as proteins, lipids, and carbohydrates, into smaller components that can be used by the cell. This process helps to recycle waste materials, eliminate foreign substances, and provide nutrients for the cell. Lysosomes play a crucial role in maintaining cellular homeostasis and ensuring proper functioning of the cell.

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  • 7. 

    The _______ ______ is a rigid frame around the cell that provides, strength, protection and support.  

    Correct Answer
    Cell wall
    cell wall
    Cell Wall
    Explanation
    The cell wall is a rigid frame that surrounds the cell, providing strength, protection, and support. It acts as a barrier, preventing the cell from bursting under pressure and protecting it from external threats. The cell wall also helps maintain the shape of the cell and provides structural support, allowing the cell to withstand mechanical stress.

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  • 8. 

    This type of tissye allows for movement.*One word answer

    Correct Answer
    Muscle
    muscle
    Muscular
    muscular
    Explanation
    Muscle is the correct answer because it is the type of tissue that allows for movement. Muscles are responsible for generating force and enabling movement in the body. They can contract and relax, allowing for various types of movement such as walking, running, and lifting objects. Muscles are composed of muscle fibers that are capable of contracting and exerting force, making them essential for movement in the body.

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  • 9. 

    All plant tissues are formed from the group of ___________ tissues.

    Correct Answer
    Meristematic
    meristematic
    Explanation
    Plant tissues are formed from meristematic tissues. Meristematic tissues are undifferentiated cells that have the ability to divide and differentiate into various types of plant tissues. These tissues are responsible for the growth and development of plants. They are found in the growing regions of plants such as the tips of roots and shoots. Meristematic tissues give rise to other types of plant tissues including dermal, ground, and vascular tissues.

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  • 10. 

    ________ transports the sugar produced during photosynthesis from the leaves to other parts of the plant.

    Correct Answer
    Phloem
    phloem
    Explanation
    Phloem is the tissue responsible for transporting the sugar produced during photosynthesis from the leaves to other parts of the plant. It acts as a transportation system, allowing the sugars to be distributed to areas where they are needed for growth, energy storage, or other metabolic processes. The phloem consists of specialized cells called sieve elements, which form long tubes that allow for the movement of sugars and other organic molecules. These tubes are connected end-to-end, forming a continuous pathway throughout the plant. Therefore, the correct answer is Phloem.

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  • 11. 

    The skin is made up of two layers of tissues.The ________ and the _________*In your answer put each word together and seperate them with a comma no space

    Correct Answer
    Epidermis,Dermis
    Dermis,Epidermis
    epidermis,dermis
    dermis ,epidermis
    Explanation
    The correct answer is "Epidermis,Dermis". The skin is made up of two layers of tissues: the epidermis, which is the outermost layer, and the dermis, which is the inner layer.

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  • 12. 

    The epidermis prevents _________ from entering your body.

    Correct Answer
    bacteria
    Bacteria
    viruses
    Viruses
    Explanation
    The epidermis is the outermost layer of the skin and acts as a protective barrier. It prevents both bacteria and viruses from entering the body. Bacteria are single-celled microorganisms that can cause infections, while viruses are even smaller infectious agents that can also cause various diseases. The epidermis acts as a physical barrier, preventing these harmful microorganisms from penetrating into the body and causing infections or illnesses.

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  • 13. 

    The lungs are a pair of organs involved in ___________.

    Correct Answer
    respiration
    Respiration
    Explanation
    The lungs are a pair of organs involved in respiration. Respiration refers to the process of inhaling oxygen and exhaling carbon dioxide. The lungs play a crucial role in this process by facilitating the exchange of gases between the air and the bloodstream. Oxygen is taken in through inhalation and transported to the cells of the body, while carbon dioxide, a waste product, is removed from the cells and expelled through exhalation. Therefore, the lungs are directly involved in the important physiological process of respiration.

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  • 14. 

    Alveoli are surrounded by thin-walled blood vessels called _____________.

    Correct Answer
    Capillaries
    capillaries
    Explanation
    Alveoli are surrounded by thin-walled blood vessels called capillaries. Capillaries are the smallest blood vessels in the body and they allow for the exchange of gases between the alveoli and the bloodstream. This exchange of oxygen and carbon dioxide is essential for respiration. The thin walls of the capillaries allow for efficient diffusion of gases, ensuring that oxygen is taken up by the blood and carbon dioxide is released from the blood in the alveoli.

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  • 15. 

    Answer in orderfrom top to bottom and separate each answer with a comma no space

    Correct Answer
    Trachea,Stomach,Large Intestine
    trachea,stomach,largeintestine
    trachea,stoamch,large intestine
    Trachea,Stomah,Largeintestine
  • 16. 

    Plant cells contain _________, a pigment that makes photosynthesis possible

    Correct Answer
    chlorophyll
    Chlorophyll
    Explanation
    The correct answer is chlorophyll, which is a pigment found in plant cells. Chlorophyll is responsible for the green color of plants and plays a crucial role in photosynthesis, the process by which plants convert sunlight into energy. It absorbs light energy and uses it to convert carbon dioxide and water into glucose and oxygen. Without chlorophyll, photosynthesis would not be possible, and plants would not be able to produce their own food.

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  • 17. 

    Homeostasis means/known as?Two word answer.

    Correct Answer
    Steady State
    Steady state
    steady state
    Explanation
    Homeostasis refers to the ability of an organism or system to maintain a stable internal environment despite external changes. The term "steady state" accurately describes this concept as it implies a state of equilibrium or balance in which the internal conditions remain constant. The repetition of the term in different formats ("Steady State," "Steady state," "steady state") suggests that the answer is consistent and emphasizes the importance of this term in understanding homeostasis.

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  • 18. 

    Your blood pressure should be an average of    x/x

    Correct Answer
    120/80
    Explanation
    The correct answer is 120/80 because it is considered a normal blood pressure reading. The top number, 120, represents the systolic pressure, which is the pressure in the arteries when the heart beats and pumps blood. The bottom number, 80, represents the diastolic pressure, which is the pressure in the arteries when the heart is at rest between beats. A blood pressure reading of 120/80 is considered healthy and indicates that the person has a normal blood pressure level.

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  • 19. 

    If you had a bone fracture, what type of imaging would you use.

    • A.

      Fluoroschopy

    • B.

      Ultrasound

    • C.

      PET (Positron Emission Tomography)

    • D.

      X-Ray

    • E.

      Biophotonics

    Correct Answer
    D. X-Ray
    Explanation
    X-ray imaging is commonly used to diagnose bone fractures because it can provide detailed images of the bones. X-rays use a small amount of radiation to create images of the internal structures of the body. In the case of a bone fracture, an X-ray can show the location and extent of the fracture, helping doctors determine the best course of treatment. Other imaging techniques like fluoroscopy, ultrasound, PET, and biophotonics are not typically used for diagnosing bone fractures.

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  • 20. 

    What type of imaging would you use for when looking at the digestive tract?

    • A.

      Fluoroschopy

    • B.

      Ultrasound

    • C.

      PET (Positron Emission Tomography)

    • D.

      Biophotonics

    • E.

      None of the Above

    Correct Answer
    D. Biophotonics
    Explanation
    Biophotonics is the correct answer because it is a field of study that combines biology and photonics to develop imaging techniques for biological systems. It involves the use of light-based technologies to visualize and analyze biological tissues and organs. Biophotonics can be used to examine the digestive tract by using various techniques such as endoscopy, which involves the insertion of a flexible tube with a light source and camera to capture images of the digestive system. This allows for non-invasive and high-resolution imaging of the digestive tract.

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  • 21. 

    Which type of imaging uses angiograms?

    • A.

      Fluroscopy

    • B.

      Ultrasound

    • C.

      PET (Positron Emission Tomography)

    • D.

      X-Ray

    • E.

      None of the Above

    Correct Answer
    A. Fluroscopy
    Explanation
    Fluroscopy is a type of imaging that uses angiograms. Angiograms are X-ray images of blood vessels that are taken after a contrast dye is injected into the blood vessel. This allows the doctor to visualize the blood vessels and detect any abnormalities or blockages. Ultrasound, PET, and X-ray imaging techniques do not typically use angiograms. Therefore, the correct answer is Fluroscopy.

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  • 22. 

    A type of nuclear medicine.

    • A.

      MRI (Magnetic Reasonance Imaging)

    • B.

      CT (Computed Tomography)

    • C.

      X-Rays

    • D.

      Radiotherapy

    • E.

      None of the Above

    Correct Answer
    E. None of the Above
  • 23. 

    Who is the father of vaccination. Both first and last name required and you must capatalize both.

    Correct Answer
    Edward Jenner
    Explanation
    Edward Jenner is considered the father of vaccination because he was the first person to introduce and develop the smallpox vaccine. In the late 18th century, Jenner observed that milkmaids who had contracted cowpox, a less severe disease, seemed to be immune to smallpox. Based on this observation, he conducted experiments and successfully developed a vaccine using cowpox material. Jenner's groundbreaking work laid the foundation for the concept of vaccination and revolutionized the field of medicine, leading to the eventual eradication of smallpox.

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  • 24. 

    Each section of DNA that codes for a particular protein is called a ______.Do not capatalize.

    Correct Answer
    gene
    Explanation
    A gene is a section of DNA that contains the instructions for making a specific protein. It is the basic unit of heredity and plays a crucial role in determining an organism's traits and characteristics. Genes are responsible for the production of proteins, which are essential for various biological processes and functions within the body. They are passed down from parents to offspring and can undergo mutations that contribute to genetic diversity.

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  • 25. 

    _________ __________ involvesinserting healthy genes so that the cells in the lung function normally. Capatalize both words

    Correct Answer
    Gene Therapy
    Explanation
    Gene therapy involves inserting healthy genes into the cells in the lung to restore normal functioning. By doing so, the therapy aims to correct genetic abnormalities or mutations that may be causing the lung cells to malfunction. This can potentially treat or prevent certain genetic disorders or diseases that affect the lungs. Gene therapy holds promise as a potential treatment option for various lung-related conditions and continues to be an area of active research.

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  • 26. 

    Cloning cannot create a copy of an organism.

    • A.

      True

    • B.

      False

    Correct Answer
    B. False
    Explanation
    Cloning is a process that can create an exact genetic copy of an organism. Through cloning, scientists can replicate the DNA of an organism and create a new individual with the same genetic makeup as the original. Therefore, the statement that cloning cannot create a copy of an organism is false.

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  • 27. 

    ____________ _____________ contain the genes from other species.Capatalize both words

    Correct Answer
    Transgenic Organisms
    Transgenic Organism
    Explanation
    Transgenic organisms refer to organisms that have genes from other species incorporated into their genome. These genes can be artificially introduced through genetic engineering techniques. Transgenic organisms are created for various purposes, such as producing medicines or improving crop yield. The term "Transgenic Organisms" is plural, indicating that it refers to multiple organisms, while "Transgenic Organism" is singular, referring to a single organism.

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  • 28. 

    IVF stands for....Capatalize all

    Correct Answer
    In Vitro Fertilization
    Explanation
    IVF stands for In Vitro Fertilization. In this process, eggs are fertilized by sperm outside the body, in a laboratory dish. The fertilized eggs, or embryos, are then transferred to the woman's uterus, where they can implant and develop into a pregnancy. IVF is a widely used fertility treatment for couples who are struggling with infertility or have certain medical conditions that make it difficult to conceive naturally.

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  • 29. 

    In IVF, sperm and eggs are collected and placed in a test tube or petri dish so that fertilization occurs.

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    In IVF (In Vitro Fertilization), the process involves collecting both sperm and eggs and placing them in a test tube or petri dish. This allows for fertilization to occur outside of the body. Therefore, the statement that sperm and eggs are collected and placed in a test tube or petri dish for fertilization in IVF is true.

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  • 30. 

    AI stands for....Capatalize both

    Correct Answer
    Artificial Insemination
    Explanation
    AI stands for Artificial Insemination. This is a reproductive technology used in both humans and animals to achieve pregnancy by directly introducing sperm into the reproductive tract. It is a common technique used in cases of infertility or to improve breeding in livestock.

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  • 31. 

    What is the male reproductive organ in a plant?Capatalize all

    Correct Answer
    Stamen
    stamen
    Explanation
    The male reproductive organ in a plant is called the stamen. It is responsible for producing and releasing pollen, which contains the plant's male gametes. The stamen typically consists of a filament, which holds up the anther. The anther is the part of the stamen where pollen is produced. The correct answer is "Stamen" because it is the capitalized form of the word, while "stamen" is not capitalized.

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  • 32. 

    Which set of elements makes up the most reactive group of all metals?

    • A.

      Halogens

    • B.

      Alkali metals

    • C.

      Alkaline earth metals

    Correct Answer
    B. Alkali metals
    Explanation
    Alkali metals make up the most reactive group of all metals. This is because alkali metals have only one valence electron, which they readily lose to form a positive ion. This loss of an electron results in a stable electron configuration, similar to that of a noble gas. Due to the low ionization energy and electronegativity of alkali metals, they have a strong tendency to react with other elements, especially non-metals, in order to achieve a more stable electron configuration. This high reactivity is why alkali metals are stored in oil or inert gases to prevent them from reacting with moisture or oxygen in the air.

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  • 33. 

    The prefix in chemical nomenclature for 5Do not capatalize

    Correct Answer
    penta
    Explanation
    The given correct answer is "penta". In chemical nomenclature, the prefix "penta" indicates the presence of five atoms or groups of atoms in a compound. This prefix is commonly used to name compounds that contain five of a particular element or functional group. It is important to note that the prefix should not be capitalized as per the question's instructions.

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  • 34. 

    Which of these are monovalent? There are two possible answers, click both.

    • A.

      Zinc

    • B.

      Nickel

    • C.

      Antimony

    • D.

      Ammonium

    • E.

      None of the Above

    Correct Answer(s)
    A. Zinc
    D. Ammonium
    Explanation
    Zinc and ammonium are both monovalent. Zinc is a monovalent cation, meaning it has a charge of +1. Ammonium is a monovalent polyatomic ion, consisting of one nitrogen atom and four hydrogen atoms, with a charge of +1. Nickel and antimony are not monovalent, as nickel can have multiple oxidation states and antimony is typically trivalent. Therefore, the correct answers are zinc and ammonium.

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  • 35. 

    What is the formula for dinitrogen tetroxide

    Correct Answer(s)
    N2O4
    Explanation
    The formula for dinitrogen tetroxide is N2O4. This compound is formed by the combination of two nitrogen atoms (N) and four oxygen atoms (O). The subscript numbers indicate the number of each element present in the molecule. Therefore, N2O4 represents a molecule consisting of two nitrogen atoms and four oxygen atoms bonded together.

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  • 36. 

    Formula for diphosphorus trioxide

    Correct Answer(s)
    P2O3
    Explanation
    Diphosphorus trioxide is represented by the chemical formula P2O3. The prefix "di-" indicates that there are two phosphorus atoms in the compound. The subscript "3" indicates that there are three oxygen atoms. Therefore, the correct answer is P2O3.

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  • 37. 

    Formula for phosphorus pentabromide

    Correct Answer(s)
    PBr5
    Explanation
    Phosphorus pentabromide is represented by the chemical formula PBr5. This means that it is composed of one phosphorus atom bonded to five bromine atoms. The prefix "penta-" indicates the presence of five bromine atoms, while the symbol "P" represents the phosphorus atom. Therefore, PBr5 is the correct formula for phosphorus pentabromide.

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  • 38. 

    Formula for carbon monoxide

    Correct Answer(s)
    CO
    Explanation
    The given answer "CO" is the correct formula for carbon monoxide. Carbon monoxide is a compound composed of one carbon atom (C) and one oxygen atom (O). The formula CO represents the combination of these two elements, with the carbon atom bonded to the oxygen atom. This formula is widely recognized and accepted in chemistry to represent carbon monoxide.

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  • 39. 

    Name for ionic formula CO2

    Correct Answer(s)
    carbon dioxide
    Explanation
    The name for the ionic formula CO2 is carbon dioxide. This is because CO2 consists of one carbon atom bonded to two oxygen atoms. In this compound, carbon is in the +4 oxidation state, while oxygen is in the -2 oxidation state. The prefix "di-" indicates that there are two oxygen atoms present. Therefore, the correct name for the ionic formula CO2 is carbon dioxide.

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  • 40. 

    Name for ionic formula CH4

    Correct Answer(s)
    methane
    Explanation
    The correct answer is methane because CH4 is the chemical formula for methane. Methane is a colorless and odorless gas that is the primary component of natural gas. It is composed of one carbon atom bonded to four hydrogen atoms. Methane is the simplest hydrocarbon and is commonly used as a fuel source.

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  • 41. 

    Polyatomic Compounds Formula for aluminum phosphate

    Correct Answer(s)
    AlPO4
    Explanation
    AlPO4 is the correct formula for aluminum phosphate. In this compound, aluminum (Al) has a +3 charge and phosphate (PO4) has a -3 charge. To balance the charges, one aluminum ion combines with one phosphate ion to form AlPO4. The subscript 4 indicates that there are four oxygen atoms in the phosphate ion. Therefore, AlPO4 is the correct formula for aluminum phosphate.

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  • 42. 

    Polyatomic Compounds Formula for phosphoric acid

    Correct Answer(s)
    H3PO4
    Explanation
    The correct answer is H3PO4 because the formula for phosphoric acid is derived from the valency of the elements involved. Phosphoric acid is composed of one phosphorus atom (P) with a valency of 5, and three hydrogen atoms (H) with a valency of 1 each. The valency of oxygen is 2, so it takes four oxygen atoms to balance the charges. Therefore, the formula for phosphoric acid is H3PO4.

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  • 43. 

    Polyatomic Compound for magnesium hydroxide

    Correct Answer(s)
    MgOH2
    Explanation
    The correct answer is MgOH2 because magnesium hydroxide is a polyatomic compound composed of one magnesium ion (Mg2+) and two hydroxide ions (OH-). The chemical formula for magnesium hydroxide is Mg(OH)2, where the Mg ion has a +2 charge and the OH ion has a -1 charge. Therefore, the correct formula is MgOH2, indicating the presence of one magnesium ion and two hydroxide ions in the compound.

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  • 44. 

    Name of the compound K2SO4

    Correct Answer(s)
    potassium sulfate
    Explanation
    The name of the compound K2SO4 is potassium sulfate.

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  • 45. 

    Tin (II) chlorate

    Correct Answer(s)
    Sn(ClO3)2
    Explanation
    The correct answer is Sn(ClO3)2. This is because the chemical formula "Sn(ClO3)2" represents tin (II) chlorate. In this compound, the tin ion has a +2 charge, indicated by the Roman numeral II. The chlorate ion (ClO3-) has a -1 charge, so two of them are needed to balance the +2 charge of the tin ion. Therefore, the correct formula for tin (II) chlorate is Sn(ClO3)2.

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  • 46. 

    Sodium hydroxide

    Correct Answer(s)
    NaOH
    Explanation
    NaOH is the chemical formula for sodium hydroxide. Sodium hydroxide is a strong base that is commonly used in various industries and applications. It is a white solid, highly soluble in water, and has a caustic and corrosive nature. NaOH is often used in the production of soaps, detergents, and various chemical processes. It is also used in the treatment of water, as a pH adjuster, and in the manufacturing of paper and textiles. Therefore, NaOH is the correct answer for the given chemical formula.

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  • 47. 

    A + B = AB is known as

    • A.

      DD

    • B.

      Decomp

    • C.

      SD

    • D.

      Syn

    • E.

      None of the Above

    Correct Answer
    D. Syn
    Explanation
    The equation A + B = AB represents the operation of concatenation or joining together of two variables or values A and B. This operation is commonly referred to as "concatenation" or "string concatenation". Therefore, the term "Syn" is an abbreviation for "concatenation" or "string concatenation", making it the correct answer.

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  • 48. 

    This type of chemical reaction contains an acid and a base and a salt and water  

    • A.

      DD

    • B.

      Combustion

    • C.

      Syn

    • D.

      SD

    • E.

      None of the Above

    Correct Answer
    E. None of the Above
    Explanation
    The given statement describes a neutralization reaction, which involves the reaction between an acid and a base to form a salt and water. This type of reaction is not combustion, synthesis, or any of the above options.

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  • 49. 

    Which one of these would be required for a combustion?

    • A.

      Hydrocarbon

    • B.

      Oxygen

    • C.

      Carbon dioxide

    • D.

      Water

    • E.

      All of the Above

    Correct Answer
    E. All of the Above
    Explanation
    For a combustion to occur, all of the above substances are required. A hydrocarbon, such as methane or gasoline, serves as the fuel source. Oxygen is necessary for the combustion process to take place, as it is the oxidizer that reacts with the fuel. Carbon dioxide and water are the byproducts of the combustion reaction. Thus, all of these substances are essential components for a combustion to happen.

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