CLASS 9TH ALL SUBJECT GUESS PAPER 2026
Stop worrying about the 9th Class New Book 2026! Get the ultimate MCQ Guess Paper for BISE Rawalpindi by Fifth-A Academy. Covering Physics, Chemistry, Biology, and Computer Science with 100% target accuracy. Download your success guide now!
To help you prepare effectively for your computer science exams, I have compiled 50 of the most essential and frequently asked MCQs covering fundamental topics such as hardware, software, networking, and security.
50 Most Important Computer Science MCQs
Unit 1: Fundamentals of Computer
- The physical parts of a computer are called:
- A) Software
- B) Hardware
- C) Operating System
- D) Data
- Which of the following is known as the “Brain” of the computer?
- A) RAM
- B) CPU
- C) Hard Disk
- D) Monitor
- The processed data is called:
- A) Input
- B) Information
- C) Raw facts
- D) Memory
- Which generation of computers used Vacuum Tubes?
- A) First Generation
- B) Second Generation
- C) Third Generation
- D) Fourth Generation
- Microprocessors were introduced in which generation?
- A) Second
- B) Third
- C) Fourth
- D) Fifth
- Which of the following is an example of an Input Device?
- A) Printer
- B) Speaker
- C) Scanner
- D) Monitor
- The largest unit of storage among the following is:
- A) Megabyte (MB)
- B) Gigabyte (GB)
- C) Terabyte (TB)
- D) Kilobyte (KB)
- Who is known as the Father of Computers?
- A) Bill Gates
- B) Charles Babbage
- C) Alan Turing
- D) Steve Jobs
Unit 2: Operating Systems & Software
- Which software manages the hardware resources of a computer?
- A) Application Software
- B) Operating System
- C) Utility Program
- D) Language Processor
- Windows is an example of:
- A) GUI (Graphical User Interface)
- B) CLI (Command Line Interface)
- C) Hardware
- D) Open Source Software
- The process of starting or restarting a computer is called:
- A) Loading
- B) Booting
- C) Processing
- D) Formatting
- Which of the following is a System Software?
- A) MS Word
- B) Chrome
- C) Device Driver
- D) Media Player
- The shortcut key to copy selected text is:
- A) Ctrl + V
- B) Ctrl + X
- C) Ctrl + C
- D) Ctrl + Z
- Deleting a file sends it to the:
- A) Control Panel
- B) Recycle Bin
- C) My Documents
- D) Desktop
Unit 3: Computer Networks
- What does LAN stand for?
- A) Large Area Network
- B) Local Area Network
- C) Light Area Network
- D) Link Area Network
- A network that covers a whole city is called:
- A) LAN
- B) WAN
- C) MAN
- D) PAN
- The world’s largest network is:
- A) Intranet
- B) Internet
- C) Ethernet
- D) VPN
- Which device is used to connect multiple computers in a LAN?
- A) Modem
- B) Hub/Switch
- C) Router
- D) Gateway
- The set of rules that governs data communication is called:
- A) Standard
- B) Protocol
- C) Topology
- D) Media
- HTTP stands for:
- A) Hypertext Transfer Protocol
- B) Hyperlink Text Transfer Protocol
- C) High Transfer Text Protocol
- D) Hypertext Terminal Protocol
Unit 4: Data Communication & Security
- Which transmission media uses light pulses to transmit data?
- A) Coaxial Cable
- B) Twisted Pair
- C) Fiber Optic
- D) Radio Waves
- Modem stands for:
- A) Model Demodel
- B) Modulator Demodulator
- C) Mobile Demobile
- D) Monitor Device
- A malicious program that replicates itself is called a:
- A) Adware
- B) Virus
- C) Spyware
- D) Firmware
- To protect a computer from viruses, we use:
- A) Firewall
- B) Antivirus
- C) Password
- D) Backup
- The process of converting readable text into unreadable code is:
- A) Decryption
- B) Encryption
- C) Compression
- D) Conversion
Unit 5: Number Systems & Logic Gates
- The base of the Binary number system is:
- A) 10
- B) 8
- C) 2
- D) 16
- How many bits are in one Byte?
- A) 4
- B) 8
- C) 16
- D) 1024
- Hexadecimal system uses base:
- A) 2
- B) 8
- C) 10
- D) 16
- Which logic gate is known as an Inverter?
- A) AND
- B) OR
- C) NOT
- D) NAND
- The output of an AND gate is High only if:
- A) One input is High
- B) All inputs are High
- C) All inputs are Low
- D) No input is High
Unit 6: Database & MS Office
- In a database, a collection of related records is called a:
- A) Field
- B) Table
- C) Column
- D) File
- Which of the following is used to uniquely identify a record?
- A) Foreign Key
- B) Primary Key
- C) Composite Key
- D) Candidate Key
- MS Word is an example of:
- A) Spreadsheet
- B) Database
- C) Word Processor
- D) Presentation Software
- In MS Excel, a formula always begins with:
- A) +
- B) –
- C) =
- D) *
- The intersection of a row and a column is called a:
- A) Block
- B) Cell
- C) Range
- D) Address
Unit 7: Programming & Web
- A step-by-step procedure to solve a problem is called:
- A) Flowchart
- B) Algorithm
- C) Program
- D) Syntax
- Which language is directly understood by the computer?
- A) High-level language
- B) Assembly language
- C) Machine language
- D) C++
- HTML is used to create:
- A) Operating Systems
- B) Web Pages
- C) Databases
- D) Graphics
- Which of the following is a High-level language?
- A) Machine Language
- B) Python
- C) Assembly Language
- D) Binary Language
- The error in a computer program is called a:
- A) Mistake
- B) Bug
- C) Virus
- D) Fault
Miscellaneous / General Knowledge
- ROM is a ______ memory.
- A) Volatile
- B) Non-volatile
- C) Temporary
- D) Virtual
- RAM stands for:
- A) Read Access Memory
- B) Random Access Memory
- C) Rapid Access Memory
- D) Run Access Memory
- Which key is used to refresh a web page?
- A) F1
- B) F2
- C) F5
- D) F10
- URL stands for:
- A) Uniform Resource Link
- B) Uniform Resource Locator
- C) Universal Resource Locator
- D) United Resource Link
- What is the shortcut for “Undo”?
- A) Ctrl + Y
- B) Ctrl + Z
- C) Ctrl + U
- D) Ctrl + A
- Which of the following is a storage device?
- A) Monitor
- B) Keyboard
- C) Hard Disk
- D) CPU
- ASCII stands for:
- A) American Standard Code for Information Interchange
- B) Australian Standard Code for Information Interchange
- C) American Scientific Code for Information Interchange
- D) All Standard Code for Information Interchange
- A Byte consists of how many nibbles?
- A) 1
- B) 2
- C) 4
- D) 8
- Which device converts digital signals to analog?
- A) Router
- B) Modem
- C) Switch
- D) Bridge
- The first mechanical calculating device was:
- A) Pascaline
- B) Abacus
- C) Difference Engine
- D) Analytical Engine
Since the BISE Rawalpindi Board has shifted towards Student Learning Outcomes (SLOs), these 50 MCQs focus on both core definitions and conceptual application from the latest 9th-grade Physics curriculum.
Unit 1: Physical Quantities & Measurement
- The number of base units in SI is:
- A) 3 B) 6 C) 7 D) 9
- Which of the following is the smallest quantity?
- A) 0.01 g B) 2 mg C) 100 μg D) 5000 ng
- The least count of a Vernier Calliper is:
- A) 0.1 cm B) 0.01 cm C) 0.1 mm D) 0.01 mm
- Which instrument is most suitable to measure the internal diameter of a test tube?
- A) Meter rule B) Vernier Callipers C) Screw gauge D) Measuring tap
- Significant figures in 0.00580 are:
- A) 5 B) 4 C) 3 D) 2
Unit 2: Kinematics
- A body has translatory motion if it moves along a:
- A) Straight line B) Circle C) Line without rotation D) Curved path
- The slope of a distance-time graph gives:
- A) Acceleration B) Speed C) Velocity D) Displacement
- A ball is thrown vertically upward. Its velocity at the highest point is:
- A) $10 \, ms^{-1}$ B) Zero C) $9.8 \, ms^{-1}$ D) Double
- Which of the following is a vector quantity?
- A) Speed B) Distance C) Displacement D) Power
- Change in velocity per unit time is called:
- A) Speed B) Acceleration C) Momentum D) Force
Unit 3: Dynamics
- Inertia depends upon:
- A) Force B) Net force C) Mass D) Velocity
- The SI unit of momentum is:
- A) $Nm$ B) $kgms^{-1}$ C) $Ns^{-1}$ D) $kgm^2s^{-1}$
- Newton’s first law of motion is valid only in the absence of:
- A) Force B) Net force C) Friction D) Momentum
- Centripetal force is always directed:
- A) Towards the tangent B) Towards the center C) Away from center D) Upwards
- Which of the following reduces friction?
- A) Increasing roughness B) Using ball bearings C) Increasing mass D) Increasing area
Unit 4: Turning Effect of Forces
- Two equal but opposite parallel forces having different lines of action produce:
- A) Torque B) A couple C) Equilibrium D) Neutral axis
- A body is in equilibrium when its acceleration is:
- A) Maximum B) Minimum C) Zero D) Uniform
- The center of gravity of a uniform rod is at:
- A) One end B) Its center C) Outside the rod D) Any point
- $\sin \theta$ is equal to:
- A) $Base/Hyp$ B) $Perp/Hyp$ C) $Perp/Base$ D) $Hyp/Base$
- Torque is calculated by the formula:
- A) $F \times v$ B) $F \times L$ C) $m \times a$ D) $P \times t$
Unit 5: Gravitation
- The value of $G$ is:
- A) $6.673 \times 10^{-11} \, Nm^2kg^{-2}$ B) $6.673 \times 10^{11} \, Nm^2kg^{-2}$ C) $9.8 \, ms^{-2}$ D) $6.4 \times 10^6 \, m$
- The mass of Earth is approximately:
- A) $6 \times 10^{24} \, g$ B) $6 \times 10^{24} \, kg$ C) $6 \times 10^{22} \, kg$ D) $60 \times 10^{24} \, kg$
- As we go high above the Earth’s surface, the value of $g$:
- A) Increases B) Decreases C) Remains same D) Becomes zero
- The orbital speed of a low orbit satellite is:
- A) Zero B) $8000 \, ms^{-1}$ C) $11.2 \, kms^{-1}$ D) $9.8 \, ms^{-1}$
- The distance of geostationary satellite from the surface of Earth is:
- A) $42,300 \, km$ B) $36,000 \, km$ C) $6,400 \, km$ D) $1000 \, km$
Unit 6: Work and Energy
- The work done is zero when the angle between Force and Displacement is:
- A) $0^\circ$ B) $45^\circ$ C) $90^\circ$ D) $180^\circ$
- Kinetic Energy of a body of mass $m$ and velocity $v$ is:
- A) $mgh$ B) $mv^2$ C) $\frac{1}{2} mv^2$ D) $Fav$
- The energy stored in a dam is:
- A) Kinetic B) Potential C) Solar D) Thermal
- Einstein’s mass-energy equation is:
- A) $E = mc^2$ B) $E = mgh$ C) $E = \frac{1}{2} mv^2$ D) $W = Fd$
- The rate of doing work is called:
- A) Energy B) Torque C) Power D) Momentum
Unit 7: Properties of Matter
- Density is defined as:
- A) $m \times v$ B) $m/v$ C) $v/m$ D) $F/A$
- The SI unit of pressure is Pascal, which is equal to:
- A) $Nm^{-2}$ B) $Nm^2$ C) $kgm^{-3}$ D) $N$
- According to Archimedes principle, upthrust is equal to:
- A) Weight of displaced liquid B) Mass of object C) Volume of object D) Density of liquid
- The state of matter that exists at very high temperatures (in stars) is:
- A) Gas B) Liquid C) Plasma D) Solid
- Hooke’s Law is applicable within:
- A) Melting point B) Elastic limit C) Plastic limit D) Boiling point
Unit 8: Thermal Properties of Matter
- Water freezes at:
- A) $0 \, K$ B) $273 \, K$ C) $373 \, K$ D) $-273 \, K$
- Specific heat of water is:
- A) $2100 \, Jkg^{-1}K^{-1}$ B) $4200 \, Jkg^{-1}K^{-1}$ C) $1000 \, Jkg^{-1}K^{-1}$ D) $900 \, Jkg^{-1}K^{-1}$
- The process of solid changing directly into gas is:
- A) Evaporation B) Melting C) Sublimation D) Condensation
- Evaporation causes:
- A) Heating B) Cooling C) No change D) Radiation
- Which of the following has the highest specific heat?
- A) Copper B) Ice C) Water D) Mercury
Unit 9: Transfer of Heat
- In solids, heat is transferred mainly by:
- A) Conduction B) Convection C) Radiation D) Absorption
- Convection of heat occurs in:
- A) Solids and Liquids B) Liquids and Gases C) Solids and Gases D) Vacuum
- Land breeze blows during:
- A) Day B) Night C) Summer D) Winter
- Which color is a good absorber of heat?
- A) White B) Red C) Black D) Green
- Thermal conductivity of Silver is:
- A) High B) Low C) Zero D) Moderate
- Global warming is primarily caused by:
- A) Greenhouse effect B) Conduction C) Land breeze D) Evaporation
- The transfer of heat from the Sun to Earth is by:
- A) Conduction B) Convection C) Radiation D) Insulation
- A clinical thermometer has a range from:
- A) $0$ to $100^\circ C$ B) $35$ to $42^\circ C$ C) $32$ to $212^\circ C$ D) $20$ to $50^\circ C$
- Double glass windows are used for:
- A) Decoration B) Insulation C) Cooling D) Better view
- The unit of thermal conductivity is:
- A) $Wm^{-1}K^{-1}$ B) $JK^{-1}$ C) $Jkg^{-1}$ D) $W$
Unit 1: Fundamentals of Chemistry
- The branch of chemistry that deals with the study of hydrocarbons is:
- A) Industrial – B) Inorganic – C) Organic – D) Physical
- A piece of matter in pure form is termed as:
- A) Mixture – B) Substance – C) Element – D) Compound
- The atomic mass of an element expressed in grams is called:
- A) Atomic number – B) Formula mass – C) Gram atomic mass – D) Molecular mass
- Which of the following is a triatomic molecule?
- A) $H_2$ – B) $O_2$ – C) $H_2O$ – D) $He$
- The number of particles in one mole of a substance is:
- A) $6.02 \times 10^{22}$ – B) $6.02 \times 10^{23}$ – C) $6.02 \times 10^{24}$ – D) $10^{23}$
Unit 2: Structure of Atoms
- Cathode rays are actually:
- A) Protons – B) Electrons – C) Neutrons – D) Alpha particles
- The $p$ subshell can accommodate a maximum of ______ electrons:
- A) 2 – B) 6 – C) 10 – D) 14
- Who discovered the Proton?
- A) Thomson – B) Rutherford – C) Goldstein – D) Bohr
- Isotopes are atoms of the same element with different number of:
- A) Protons – B) Electrons – C) Neutrons – D) Positrons
- The isotope used for the treatment of cancer is:
- A) Iodine-131 – B) Cobalt-60 – C) Carbon-14 – D) Uranium-235
Unit 3: Periodic Table & Periodicity
- The horizontal rows in the periodic table are called:
- A) Groups – B) Periods – C) Families – D) Blocks
- Which element has the highest electronegativity?
- A) Cesium – B) Fluorine – C) Iodine – D) Oxygen
- The shield effect increases as we move:
- A) Down the group – B) Left to right in a period – C) Right to left – D) Up the group
- Noble gases are placed in group:
- A) 1 – B) 7 – C) 17 – D) 18
- Atomic radius ______ across a period from left to right:
- A) Increases – B) Decreases – C) Remains same – D) First increases then decreases
Unit 4: Structure of Molecules
- The bond formed by the complete transfer of electrons is:
- A) Ionic – B) Covalent – C) Coordinate – D) Metallic
- How many covalent bonds are in a $C_2H_2$ (Ethyne) molecule?
- A) 2 – B) 3 – C) 5 – D) 4
- Ice floats on water because its density is ______ than water:
- A) Higher – B) Lower – C) Equal – D) Zero
- Triple covalent bond involves the sharing of ______ electrons:
- A) 3 – B) 4 – C) 6 – D) 8
- Which molecule has a polar covalent bond?
- A) $H_2$ – B) $Cl_2$ – C) $HCl$ – D) $O_2$
Unit 5: Physical States of Matter
- Diffusion is fastest in:
- A) Gases – B) Liquids – C) Solids – D) Plasma
- The boiling point of water at sea level is:
- A) $0^\circ C$ – B) $273 \, K$ – C) $373 \, K$ – D) $100 \, K$
- Which of the following is an amorphous solid?
- A) Diamond – B) Sodium Chloride – C) Plastic/Glass – D) Graphite
- The pressure of air at sea level is exactly:
- A) $1 \, atm$ – B) $760 \, Pa$ – C) $14.7 \, atm$ – D) $100 \, torr$
- Evaporation is a ______ process:
- A) Heating – B) Cooling – C) Chemical – D) Equilibrium
Unit 6: Solutions
- A solution containing a small amount of solute is called:
- A) Dilute – B) Concentrated – C) Saturated – D) Supersaturated
- Brass is a solid solution of:
- A) Zinc and Copper – B) Zinc and Iron – C) Tin and Copper – D) Gold and Silver
- Molarity is the number of moles of solute dissolved in:
- A) $1 \, kg$ of solvent – B) $1 \, dm^3$ of solution – C) $100 \, g$ of solution – D) $1 \, g$ of solute
- Tyndall effect is shown by:
- A) True solution – B) Colloids – C) Suspensions – D) Pure water
- Which of the following is a “Universal Solvent”?
- A) Alcohol – B) Benzene – C) Water – D) Ether
Unit 7: Electrochemistry
- The oxidation number of Hydrogen in $NaH$ is:
- A) $+1$ – B) $-1$ – C) $0$ – D) $+2$
- Spontaneous chemical reactions take place in:
- A) Galvanic cell – B) Electrolytic cell – C) Nelson’s cell – D) Down’s cell
- During electrolysis of water, Oxygen gas is released at:
- A) Anode – B) Cathode – C) Both – D) Battery
- The process of coating a thin layer of one metal over another is:
- A) Rusting – B) Corrosion – C) Electroplating – D) Alloying
- The formula of Rust is:
- A) $Fe_2O_3$ – B) $Fe_2O_3 \cdot nH_2O$ – C) $FeO$ – D) $Fe(OH)_3$
Unit 8: Chemical Reactivity
- Which of the following is the most reactive metal?
- A) Iron – B) Silver – C) Potassium – D) Gold
- Non-metals are generally ______ in nature:
- A) Reducing agents – B) Oxidizing agents – C) Conductors – D) Basic
- The most abundant non-metal in the Earth’s crust is:
- A) Oxygen – B) Silicon – C) Aluminum – D) Nitrogen
- Which metal is liquid at room temperature?
- A) Sodium – B) Magnesium – C) Mercury – D) Calcium
- Halogens belong to group:
- A) 1 – B) 2 – C) 16 – D) 17
New 2026 Topics: Environmental & Analytical
- The percentage of Nitrogen in air is:
- A) $21\%$ – B) $78\%$ – C) $0.03\%$ – D) $0.9\%$
- Acid rain is mainly caused by oxides of:
- A) Carbon – B) Nitrogen and Sulfur – C) Hydrogen – D) Helium
- Which gas is used in fire extinguishers?
- A) $O_2$ – B) $CO_2$ – C) $N_2$ – D) $H_2$
- The mass of one molecule of water is:
- A) $18 \, amu$ – B) $18 \, g$ – C) $1.8 \, g$ – D) $8 \, amu$
- Bohr’s atomic model was presented in:
- A) 1911 – B) 1913 – C) 1920 – D) 1897
- Mendeleev arranged elements on the basis of:
- A) Atomic mass – B) Atomic number – C) Density – D) Color
- Water of crystallization is found in:
- A) Blue Vitriol – B) Sugar – C) Sodium – D) Benzene
- An example of a suspension is:
- A) Salt in water – B) Milk – C) Paints – D) Jelly
- Strongest intermolecular forces are:
- A) Dipole-dipole – B) Hydrogen bonding – C) London forces – D) Ion-dipole
- The unit of Molarity is:
- A) $mol/dm^3$ – B) $g/dm^3$ – C) $mol/kg$ – D) $unitless$
Unit 1: Introduction to Biology
- The study of functions of different parts of living organisms is:
- A) Morphology – B) Anatomy – C) Physiology – D) Histology
- Who is known as the “Founder of Medicine”?
- A) Jabir Bin Hayyan – B) Bu Ali Sina – C) Abdul Malik Asmai – D) Aristotle
- The level of organization that is less definite in plants than in animals is:
- A) Tissue level – B) Organ system level – C) Organ level – D) Individual level
- Members of the same species living in the same place at the same time form a:
- A) Community – B) Population – C) Ecosystem – D) Biosphere
- Which bio-element accounts for $65\%$ of the total human body mass?
- A) Carbon – B) Hydrogen – C) Oxygen – D) Nitrogen
Unit 2: Solving a Biological Problem
- A tentative explanation of observations is called:
- A) Theory – B) Law – C) Hypothesis – D) Deduction
- Which of these is used for the treatment of Malaria?
- A) Aspirin – B) Quinine – C) Paracetamol – D) Penicillin
- The actual cause of Malaria is:
- A) Plasmodium – B) Mosquito – C) Contaminated water – D) Bad air
- Deductions are logical consequences of:
- A) Observations – B) Hypotheses – C) Results – D) Laws
- Scientific names of organisms are usually in which language?
- A) English – B) Latin – C) French – D) German
Unit 3: Biodiversity
- The basic unit of classification is:
- A) Genus – B) Family – C) Species – D) Order
- According to the Five Kingdom system, Fungi are:
- A) Autotrophic – B) Absorptive Heterotrophs – C) Ingestive Heterotrophs – D) Prokaryotic
- Prions are composed of:
- A) DNA – B) RNA – C) Protein only – D) Both DNA and RNA
- The scientific name of the Starfish is:
- A) Homo sapiens – B) Rana tigrina – C) Asterias rubens – D) Allium cepa
- Deforestation leads to:
- A) Increased soil erosion – B) Increased rainfall – C) Decreased $CO_2$ – D) Increased biodiversity
Unit 4: Cells and Tissues
- Which organelle is responsible for protein synthesis?
- A) Mitochondria – B) Ribosomes – C) Golgi apparatus – D) Lysosomes
- The cell wall of fungi is made of:
- A) Cellulose – B) Chitin – C) Peptidoglycan – D) Lignin
- The “Powerhouse” of the cell is:
- A) Mitochondria – B) Nucleus – C) Chloroplast – D) Vacuole
- Movement of molecules from lower to higher concentration using energy is:
- A) Diffusion – B) Osmosis – C) Active Transport – D) Facilitated diffusion
- Which tissue provides support and flexibility to plant parts like petioles?
- A) Sclerenchyma – B) Collenchyma – C) Xylem – D) Phloem
Unit 5: Cell Cycle
- The phase of the cell cycle where DNA is duplicated is:
- A) G1 phase – B) S phase – C) G2 phase – D) M phase
- In which stage of Mitosis do chromosomes align at the equator?
- A) Prophase – B) Metaphase – C) Anaphase – D) Telophase
- Crossing over occurs during:
- A) Prophase I – B) Metaphase II – C) Prophase II – D) Anaphase I
- Programmed cell death is known as:
- A) Necrosis – B) Apoptosis – C) Mitosis – D) Meiosis
- Tumors that remain in their original location are called:
- A) Benign – B) Malignant – C) Metastatic – D) Cancerous
Unit 6: Enzymes
- The minimum energy required to start a chemical reaction is:
- A) Potential energy – B) Kinetic energy – C) Activation energy – D) Thermal energy
- Enzymes are chemically made of:
- A) Lipids – B) Carbohydrates – C) Proteins – D) Nucleic acids
- The part of the enzyme where the substrate binds is the:
- A) Active site – B) Allosteric site – C) Co-factor – D) Apoenzyme
- Which vitamin acts as a co-enzyme?
- A) Vitamin A – B) Vitamin B complex – C) Vitamin D – D) Vitamin E
- Enzymes work best at a specific temperature called:
- A) Minimum temp – B) Maximum temp – C) Optimum temp – D) Critical temp
Unit 7: Bioenergetics
- The “Energy Currency” of the cell is:
- A) DNA – B) NADP – C) ATP – D) Glucose
- In Photosynthesis, Oxygen is released as a byproduct from:
- A) Water – B) Carbon dioxide – C) Glucose – D) Chlorophyll
- The dark reaction of photosynthesis takes place in the:
- A) Thylakoids – B) Stroma – C) Mitochondria – D) Ribosomes
- The end product of Anaerobic respiration in humans is:
- A) Ethanol – B) Lactic Acid – C) Pyruvic Acid – D) Methanol
- The number of ATP molecules produced in the Krebs cycle (per glucose) is:
- A) 2 – B) 4 – C) 36 – D) 38
Unit 8: Nutrition
- Which mineral is essential for the synthesis of Chlorophyll?
- A) Iron – B) Magnesium – C) Calcium – D) Nitrogen
- Night blindness is caused by a deficiency of:
- A) Vitamin A – B) Vitamin C – C) Vitamin D – D) Vitamin K
- The wave-like contraction of muscles in the alimentary canal is:
- A) Peristalsis – B) Digestion – C) Absorption – D) Assimilation
- The largest gland in the human body is:
- A) Pancreas – B) Liver – C) Thyroid – D) Salivary gland
- Gastric juice contains which acid?
- A) $H_2SO_4$ – B) $HNO_3$ – C) $HCl$ – D) $CH_3COOH$
Unit 9: Transport
- Transpiration is the loss of water from plant surfaces in the form of:
- A) Liquid – B) Vapors – C) Ice – D) Droplets
- Universal blood donor group is:
- A) A – B) B – C) AB – D) O
- The lifespan of a Red Blood Cell is about:
- A) 10 days – B) 60 days – C) 120 days – D) 1 year
- Which vessels have valves to prevent the backflow of blood?
- A) Arteries – B) Capillaries – C) Veins – D) Arterioles
- The instrument used to measure blood pressure is:
- A) Thermometer – B) Sphygmomanometer – C) Barometer – D) Microscope
New 2026 Topics: Health & Environment
- What percentage of water is found in the human plasma?
- A) $70\%$ – B) $80\%$ – C) $90-92\%$ – D) $50\%$
- Stomata cover only ______ percent of the leaf surface:
- A) 1-2% – B) 5-10% – C) 20% – D) 50%
- In the human heart, the Bicuspid valve is found between:
- A) Left atrium and Left ventricle – B) Right atrium and Right ventricle – C) Left and Right atria – D) Aorta and Ventricle
- Which component of blood is responsible for clotting?
- A) RBCs – B) WBCs – C) Platelets – D) Plasma proteins
- The normal pH of human blood is:
- A) 6.4 – B) 7.0 – C) 7.4 – D) 8.0
