General Science Class 9 MCQs MCQs - General Science Practice | PakExamPoint
Practise General Science Class 9 MCQs MCQs in General Science. Attempt multiple-choice questions, check answers and revise related subtopics.
General Science Class 9 MCQs MCQs and revision practice
Study General Science Class 9 MCQs through multiple-choice questions in General Science. This subtopic contains 366 practice questions. Read the wording carefully, compare the options and attempt an answer before checking the solution in learning mode.
Use these General Science Class 9 MCQs MCQs to identify the facts, rules or methods you need to revise. Where an explanation is available, work through it and write down why your chosen option was correct or incorrect. Revisit difficult questions after reviewing your notes, then use exam mode for timed practice.
Explanation The mismatched one is : Telophase → Nuclear membrane disappear. In Telophase, the nuclear membrane reforms around each set of chromosomes, not disappears. The nuclear envelope breaks down during Prophase, and reforms in Telophase.
اگر ہم ریت کو پانی میں گھولتے ہیں تو اس مرکب کو _______ کہا جاتا ہے؟
A. Concentrated solution
B. Colloids
C. Solution
D. Suspension
Check answer and explanation
Answer: Suspension
Explanation When sand is added to water, it does not dissolve , but instead forms a mixture where the sand particles settle at the bottom of the container. This type of mixture is called a suspension , where the particles of the solute (sand) do not dissolve in the solvent (water) and instead remain suspended.
Explanation The loss of electrons and protons (H+ ions) is called oxidation. Oxidation is a chemical reaction that involves the loss of electrons or the addition of oxygen. Resulting in a change in the oxidation state of an atom, molecule, or ion.
ایک فارمولہ جو کسی مالیکیول میں ایٹموں کی اصل تعداد اور قسم کی نشاندہی کرتا ہے ____ کہلاتا ہے؟
A. Empirical formula
B. Formula mass
C. Molecular formula
D. Chemical formula
Check answer and explanation
Answer: Molecular formula
Explanation A molecular formula is a chemical formula that shows the actual number and type of atoms in a molecule. It is a way to represent the composition of a molecule using symbols and numbers. For example: Water: H2O ( two hydrogen atoms and one oxygen atom)
کمرے کے درجہ حرارت پر زیادہ تر آئنک مرکبات ______ ہیں؟
A. Amorphous solids
B. Liquids
C. Crystalline solids
D. Gases
Check answer and explanation
Answer: Crystalline solids
Explanation At room temperature , most ionic compounds are crystalline solids, meaning they have a rigid and orderly crystal structure. This is because the strong electrostatic forces between the oppositely charged ions hold them in a fixed position, creating a three-dimensional lattice.
کائینیٹک مالیکیولر تھیوری کے مطابق، گیس کے ذریعے ڈالا جانے والا دباؤ _______ کی وجہ سے ہوتا ہے؟
A. Large distances between gas molecules
B. Bombardment of the gas molecules on the walls of the container
C. Random motion of the gas molecules
D. Collision between gas molecules
Check answer and explanation
Answer: Bombardment of the gas molecules on the walls of the container
Explanation According to the kinetic molecular theory , the pressure exerted by a gas is caused by the bombardment of gas molecules on the walls of the container. The gas molecules are in constant motion , colliding with each other and the container walls, resulting in a force exerted on the walls. This force is what we experience as pressure.
روشنی کی موجودگی میں پانی کے پھٹنے کو _____ کہتے ہیں؟
A. Photolysis
B. None of these
C. Hydrolysis
D. Glycolysis
Check answer and explanation
Answer: Photolysis
Explanation Photolysis is the process by which water (H2O) is split into hydrogen ions (H+), electrons, and oxygen (O2) in the presence of light. This process occurs in the thylakoid membranes of chloroplasts during photosynthesis and is driven by light energy.
خلیے میں موجود کروموسوم جو شکل اور جسامت میں ایک دوسرے سے ملتے جلتے ہیں انہیں ____ کہا جاتا ہے؟
A. Non-homologous pair
B. Sister chromatids
C. Homologous pair
D. Heterologous pair
Check answer and explanation
Answer: Homologous pair
Explanation Homologous pairs are chromosomes that are similar in shape, size, and genetic content, and contain the same genes in the same order. They are pairs of chromosomes that are inherited one from each parent. They are responsible for determining the traits and characteristics of an organism.
کسی مادے کو مائع سے گیس میں تبدیل کرنے کے لیے حرارت کی مقدار کو _____ کہتے ہیں؟
A. Heat of vaporization
B. All of these
C. Specific heat
D. Latent heat of fusion
Check answer and explanation
Answer: Heat of vaporization
Explanation Heat of vaporization is the amount of heat energy required to convert a substance from its liquid state to its gaseous state, without changing its temperature. This energy is used to break the intermolecular forces between the molecules, allowing them to escape into the gas phase.
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