Everyday Science MCQs

Everyday Science MCQs are an essential component of the academic assessments administered for civilian positions in the Pakistan Air Force, Army, and Navy, including LDC and UDC. The broad science subjects covered by these Everyday Science MCQs include physics, chemistry, and biology. Success on the examinations given during the selection process requires a solid grasp of Everyday Science.

Candidates can improve their knowledge and score well on the general science exams by studying these  Everyday Science MCQs, which will increase their chances of passing.

Everyday Science MCQs (Part-1)

All of the following contain cartilage except:

• A) Bronchioles
• B) Trachea
• C) Intervertebral discs
• D) Epiphyseal plates
• Correct Answer: A) Bronchioles

Gaseous exchange through the skin is known as _____ respiration.

• A) Cutaneous
• B) Pulmonary
• C) Tracheal
• D) Branchial
• Correct Answer: A) Cutaneous

Respiratory distress syndrome is common especially for infants born at:

• A) Less than 7 months
• B) More than 9 months
• C) Exactly 6 months
• D) Full term (around 9 months)
• Correct Answer: A) Less than 7 months

Parabronchi are open at _____ end/s.

• A) Both
• B) One
• C) Neither
• D) Alternate
• Correct Answer: A) Both

In most birds, air sacs are _____ in number.

• A) 9
• B) 4
• C) 2
• D) 12
• Correct Answer: A) 9

Vocal cords are stretched across the _____.

• A) Larynx
• B) Pharynx
• C) Glottis
• D) Epiglottis
• Correct Answer: C) Glottis

A joint formed between humerus, radius, and ulna is an example of _____.

• A) Freely movable joint
• B) Cartilaginous joint
• C) Fibrous joint
• D) Synovial joint
• Correct Answer: D) Synovial joint

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Joint between two parietal bones, which is in fact immovable, is an example of _____.

• A) Synovial joint
• B) Cartilaginous joint
• C) Fibrous joint
• D) Ball and socket joint
• Correct Answer: C) Fibrous joint

Fibrous capsule surrounding synovial joints may be thickened at some places to form:

• A) Ligaments
• B) Tendons
• C) Cartilage
• D) Synovial membrane
• Correct Answer: D) Synovial membrane

Everyday Science MCQs (Part-2)

Higher turgor pressure in a plant cell is maintained by:

• A) Higher ionic concentration inside vacuoles resulting from active pumping of ions at their tonoplastic membrane
• B) Higher osmotic pressure of the cell vacuole
• C) Higher concentration of sugars in the cell wall
• D) Higher water content in the cytoplasm
• Correct Answer: B) Higher osmotic pressure of the cell vacuole

In which of the following joints are muscles arranged in the same plane as that of the joint?

• A) Between femur and tibia
• B) Shoulder joint
• C) Hip joint
• D) Elbow joint
• Correct Answer: A) Between femur and tibia

Which of the following hormones is predominantly responsible for bone weakening in older women?

• A) Testosterone
• B) Oestrogen
• C) Insulin
• D) Thyroxine
• Correct Answer: B) Oestrogen

Secondary cell wall of sclerenchyma cells is impregnated with:

• A) Lignin
• B) Pectin
• C) Cellulose
• D) Hemicellulose
• Correct Answer: A) Lignin

Which of the following is a childhood disease resulting from nutritive Ca2+ deficiency?

• A) Osteoporosis
• B) Scurvy
• C) Rickets
• D) Osteomalacia
• Correct Answer: C) Rickets

Among the following, which is the longest supportive cell?

• A) Tracheids
• B) Vessels
• C) Parenchyma
• D) Fibers
• Correct Answer: A) Tracheids

Which of the following statements about osteoporosis is incorrect?

• A) There is reduction of bone mass and change in chemical composition of the matrix
• B) It primarily affects older individuals
• C) It can lead to increased risk of fractures
• D) It is caused by excessive intake of calcium
• Correct Answer: D) It is caused by excessive intake of calcium

An increase in plant girth due to activity of _____ is called secondary growth.

• A) Cork cambium
• B) Epidermis
• C) Xylem
• D) Phloem
• Correct Answer: A) Cork cambium

Everyday Science MCQs for UDC and LDC with Answers

Everyday Science MCQs for UDC and LDC with answers are quite helpful for anyone who want to join the civilian branches of the Army, Navy, and Pakistan Air Force. Important general science topics, such as scientific concepts, discoveries, and applications, are covered in these Everyday Science MCQs.

Candidates who have mastered these courses will be well-prepared for evaluation and able to confidently take the general science examinations that are administered during the selection process.

General Science MCQ(Part-3)

Which of the following statements about fractures in old age is incorrect?

• A) Due to good blood supply it results in quick healing
• B) It primarily affects bone density
• C) Healing may be slower due to reduced bone metabolism
• D) It can increase the risk of complications like infections
• Correct Answer: A) Due to good blood supply it results in quick healing

If two ends of fractured bone are opened and kept united via screws and wires drilled in bone substance. This step in fracture repair is called _____.

• A) Closed reduction
• B) Open reduction
• C) External fixation
• D) Internal fixation
• Correct Answer: B) Open reduction

Vascular Cambium initially appears as actively dividing cells between _____.

• A) Primary xylem and primary phloem
• B) Secondary xylem and secondary phloem
• C) Cortex and pith
• D) Epidermis and cortex
• Correct Answer: A) Primary xylem and primary phloem

A fracture hematoma has _____.

• A) Live cells
• B) Active bacteria
• C) Dead cell
• D) White blood cells only
• Correct Answer: C) Dead cell

Sperms of liverworts, mosses, ferns move towards archegonia, in response to uncleic acid released by the ovum. This is an example of _____.

• A) Chemotactic movement
• B) Phototactic movement
• C) Thermotactic movement
• D) Gravitactic movement
• Correct Answer: A) Chemotactic movement

Which of the following cells are involved in soft callus formation?

• A) Fibroblast and osteoblast
• B) Chondrocyte and adipocyte
• C) Osteoclast and erythrocyte
• D) Lymphocyte and macrophage
• Correct Answer: A) Fibroblast and osteoblast

Everyday Science MCQs (Part-4)

Bony callus formation completes in _____.

• A) 1-2 weeks
• B) 2-3 months
• C) 6-8 months
• D) 1 year
• Correct Answer: B) 2-3 months

The place of attachment of leaf with the shoot is called _____.

• A) Pulvinus
• B) Node
• C) Internode
• D) Petiole
• Correct Answer: D) Petiole

Which of the following is a uni-nucleated cell?

• A) A smooth muscle cell
• B) Cardiac muscle cell
• C) Skeletal muscle cell
• D) Osteoclast
• Correct Answer: A) A smooth muscle cell

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Rapid movement of leaves of mimosa on touching is an example of _____.

• A) Turgor movement
• B) Thigmotropism
• C) Phototropism
• D) Gravitropism
• Correct Answer: B) Thigmotropism

The contraction of which of the following muscle fibers, is controlled by hormones _____.

• A) A smooth muscle
• B) Cardiac muscle
• C) Skeletal muscle
• D) Striated muscle
• Correct Answer: A) A smooth muscle

Roots of a plant show _____.

• A) Negative phototropism and positive geotropism
• B) Positive phototropism and negative geotropism
• C) Positive phototropism and positive geotropism
• D) Negative phototropism and negative geotropism
• Correct Answer: A) Negative phototropism and positive geotropism

Everyday Science MCQs

Everyday Science MCQs are very important for anyone who want to enlist in the civilian branches of the Army, Navy, and Pakistan Air Force. These Everyday Science MCQs cover a range of subjects, including environmental science, astronomy, and technological developments.

Candidates can improve their general scientific knowledge and show that they comprehend the material by practicing these Everyday Science MCQs.

Everyday Science MCQs (Part-5)

If a cross section of a sarcomere is seen, each myosin is surrounded by how many actin molecules?

A. 1
B. 3
C. 6
D. 12

Correct answer: C. 6

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Which one of the following forms the bulk of the exoskeleton of an arthropod?

A. Epicuticle
B. Procuticle
C. Endocuticle
D. Exocuticle

Correct answer: B. Procuticle

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What happens during muscle contraction to the length of each myosin and actin filament?

A. Myosin contracts, actin expands
B. Myosin lengthens, actin shortens
C. Myosin and actin both contract
D. Z-lines get closer

Correct answer: D. Z-lines get closer

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Which of the following steps occurs immediately after binding of Ca2+ with troponin molecule during muscle contraction?

A. Actin binds with myosin
B. Tropomyosin gets removed from the binding sites of actin filaments
C. ATP hydrolysis
D. Myosin heads bind with actin

Correct answer: B. Tropomyosin gets removed from the binding sites of actin filaments

Everyday Science MCQs (Part-6)

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Exoskeleton of a marine snail is composed of:

A. Chitin
B. Keratin
C. CaCO3
D. Cellulose

Correct answer: C. CaCO3

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Rigor mortis i.e., stiffening of the body after death results from:

A. Accumulation of lactic acid
B. Breakdown of muscle proteins
C. Unavailability of ATP, which is necessary to break the link between actin and myosin
D. Excessive calcium release

Correct answer: C. Unavailability of ATP, which is necessary to break the link between actin and myosin

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Which of the following statements about an arthropod exoskeleton is incorrect?

A. It contains joints, for the same purpose as present in the human skeletal system
B. It is composed primarily of chitin
C. It provides protection and support
D. It undergoes molting to grow

Correct answer: A. It contains joints, for the same purpose as present in the human skeletal system

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Ecdysone is:

A. A hormone that regulates moulting in arthropods
B. A neurotransmitter
C. A digestive enzyme
D. A structural protein

Correct answer: A. A hormone that regulates moulting in arthropods

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Endoskeleton is secreted by:

A. Ectoderm
B. Mesoderm
C. Endoderm
D. Exoderm

Correct answer: B. Mesoderm

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Tetany is caused by:

A. Hypercalcemia
B. Hypocalcemia
C. Hyperkalemia
D. Hypokalemia

Correct answer: B. Hypocalcemia

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Collagen fibers of bone are hardened by deposition of:

A. Fe
B. Zn
C. Ca & PO4
D. Mg

Correct answer: C. Ca & PO4

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Which one of the following is an example of a non-elastic connective tissue?

A. Tendon
B. Ligament
C. Cartilage
D. Bone

Correct answer: A. Tendon

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Which one of the following is an avascular structure?

A. Muscle
B. Nerve
C. Cartilage
D. Bone

Correct answer: C. Cartilage

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Which of the following muscles is an antagonistic member of Biceps brachii?

A. Deltoid
B. Triceps
C. Pectoralis major
D. Brachialis

Correct answer: B. Triceps

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Which of the following bones is not present in the hind-limb?

A. Femur
B. Radius
C. Tibia
D. Fibula

Correct answer: B. Radius

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Insertion of Biceps is on:

A. Ulna
B. Radius
C. Humerus
D. Scapula

Correct answer: B. Radius

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How many bones are present in the wrist?

A. 4 bones
B. 6 bones
C. 8 bones
D. 10 bones

Correct answer: C. 8 bones

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Which of the following statements is incorrect regarding locomotion in Euglena?

A. Flagellum whipping backwards moves the organism forward, and when it moves forward, the organism moves backward
B. Contractile vacuole helps in osmoregulation
C. Euglena can perform both autotrophic and heterotrophic nutrition
D. Euglena lacks a cell wall

Correct answer: A. Flagellum whipping backwards moving the organism forward, and when it moves forward the organism moves backward

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Which of the following bones are present in the palm of the hand?

A. Carpals
B. Metacarpals
C. Phalanges
D. Tarsals

Correct answer: B. Metacarpals

Everyday Science MCQs Objective Question

A strong background in general science is essential for anyone hoping to seek UDC or LDC positions in the civilian branches of the Army, Navy, and Pakistan Air Force. Chemical reactions, biological concepts, and physics principles are only a few of the topics covered in Everyday Science MCQs .

Candidates can perform very well on the general science exams given throughout the selection process by being familiar with these  Everyday Science MCQs.

Everyday Science MCQs (Part-7)

Which of the following animals uses setae and muscles for their locomotion?

A. Earthworm
B. Fish
C. Bird
D. Spider

Correct answer: A. Earthworm

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How many vertebrae are present in the vertebral column of man?

A. 24 vertebrae
B. 26 vertebrae
C. 33 vertebrae
D. 42 vertebrae

Correct answer: C. 33 vertebrae

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Which of the following vertebrates has a fish-like body?

A. Mammals
B. Birds
C. Amphibians
D. Reptiles

Correct answer: C. Amphibians

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How many vertebrae are present in the coccyx?

A. 3
B. 5
C. 7
D. 9

Correct answer: C. 7

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Which of the following pairs of fins in a fish body are paired?

A. Dorsal and Anal
B. Pectoral and Pelvic
C. Caudal and Anal
D. Dorsal and Pectoral

Correct answer: B. Pectoral and Pelvic

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How many vertebrae are present in the thoracic region?

A. 10
B. 12
C. 14
D. 16

Correct answer: B. 12

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Among the following organisms, which shows the best adaptations for locomotion?

A. Fish
B. Amphibians
C. Reptiles
D. Birds

Correct answer: C. Reptiles

Everyday Science MCQs (Part-8)

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How many vertebrae are in the sacrum?

A. 3
B. 5
C. 7
D. 9

Correct answer: B. 5

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Which of the following is the swiftest form of locomotion?

A. Brachiation
B. Cursorial
C. Fossorial
D. Unguligrade

Correct answer: D. Unguligrade

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S-band locomotion is characteristically seen in:

A. Birds
B. Mammals
C. Cartilaginous fish
D. Amphibians

Correct answer: C. Cartilaginous fish

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How many vertebrae are present in the lumbar region?

A. 3
B. 5
C. 7
D. 9

Correct answer: B. 5

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Which of the following bones are present in the pectoral girdle?

A. Clavicle
B. Scapula
C. Femur
D. Tibia

Correct answer: A. Clavicle, B. Scapula

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There are _____ types of nutrients needed by plants besides light to carry out photosynthesis.

A. Two
B. Three
C. Four
D. Five

Correct answer: B. Three

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The site(s) where most of the uptake of water and minerals take place is/are:

A. Stomata
B. Xylem vessels
C. Root hairs
D. Phloem sieve tubes

Correct answer: C. Root hairs

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The uptake of water in plants involves:

A. Active transport
B. Passive transport
C. Osmosis
D. Diffusion

Correct answer: C. Osmosis

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The membrane of vacuoles is known as:

A. Tonoplast
B. Cell membrane
C. Nucleus
D. Endoplasmic reticulum

Correct answer: A. Tonoplast

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The diffusion of ions along with water also takes place by mass flow system along the ______ path.

A. Symplast
B. Apoplast
C. Vacuolar
D. Xylem

Correct answer: B. Apoplast

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Active transport is dependent on:

A. Photosynthesis
B. Respiration
C. Transpiration
D. Germination

Correct answer: B. Respiration

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In plants, the neighboring cells are connected with one another by:

A. Cell walls
B. Tonoplast
C. Chloroplasts
D. Plasmodesmata

Correct answer: D. Plasmodesmata

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In the root cells, the _____ pathway becomes discontinuous in the endodermis due to the presence of a casparian strip.

A. Symplast
B. Apoplast
C. Vacuolar
D. Xylem

Correct answer: A. Symplast

Everyday Science Mcqs

In all military forces, including the Army, Navy, and Pakistan Air Force, Everyday Science MCQs constitute a crucial component of the academic assessments administered for UDC and LDC jobs. The Everyday Science MCQs topics covered in these  include energy sources, environmental concerns, and scientific developments.

Candidates can improve their general scientific knowledge and comprehension by practicing these Everyday Science MCQs, which will help them succeed on the general science exams.

Everyday Science MCQs (Part-9)

Cytoplasmic strands that extend through pores in adjacent cell walls are known as _____.

• A) Plasmalemma
• B) Plastids
• C) Plasmodesmata
• D) Plastoglobuli (Correct answer: C) Plasmodesmata

In plants, water potential is determined by major factors _____.

• A) Temperature and pressure
• B) Solutes and pressure
• C) Temperature and solutes
• D) Solutes and gravity (Correct answers: B) Solutes and pressure

The pressure generated when water enters & inflates plant cells is called _____ potential.

• A) Osmotic
• B) Turgor
• C) Pressure
• D) Gravitational (Correct answer: B) Turgor

The movement of water molecules from a region of higher water potential to a region of lower water potential (through a membrane) is called _____.

• A) Diffusion
• B) Osmosis
• C) Active transport
• D) Filtration (Correct answer: B) Osmosis

_____ component of cell wall has great affinity with water.

• A) Lignin
• B) Cellulose
• C) Pectin
• D) Cutin (Correct answer: B) Cellulose

Commonly in other plants than tall ones the speed of upward movement of water is _____.

• A) 1 cm/h
• B) 10 cm/h
• C) 1 m/h
• D) 10 m/h (Correct answer: C) 1 m/h

Exceptionally the positive hydrostatic pressure generated by root pressure is about _____.

• A) 80 kPa
• B) 800 kPa
• C) 8 MPa
• D) 80 MPa (Correct answer: B) 800 kPa

Cuticular transpiration is _____ of total transpiration.

• A) 1-2%
• B) 5-7%
• C) 10-12%
• D) 20-25% (Correct answer: B) 5-7%

All plants do not possess _____.

• A) Stomata
• B) Lenticels
• C) Guard cells
• D) Trichomes (Correct answer: B) Lenticels

Lenticular transpiration is _____ of total transpiration.

• A) 1-2%
• B) 5-7%
• C) 10-12%
• D) 20-25% (Correct answer: A) 1-2%

Introduction of vaccine within the body to produce immunity is an example of _____.

• A) Artificially induced active immunity
• B) Naturally acquired passive immunity
• C) Naturally acquired active immunity
• D) Artificially induced passive immunity (Correct answer: A) Artificially induced active immunity

The flow of lymph is maintained by _____.

• A) Movement of viscera
• B) Breathing movements
• C) Valves
• D) Muscular contraction (Correct answer: C) Valves

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It is the discharge of blood from blood vessels?

• A) Embolism
• B) Hemorrhage
• C) Ischemia
• D) Thrombosis (Correct answer: B) Hemorrhage

Everyday Science MCQs (Part-10)

All of the following are blood clots except _____.

• A) Atheroma
• B) Embolus
• C) Thrombus
• D) Thrombosis (Correct answer: A) Atheroma

It is the measure of force with which blood pushes up against the walls of blood vessels.

• A) Blood pressure
• B) Heart rate
• C) Cardiac output
• D) Pulse rate (Correct answer: A) Blood pressure

Which of the following have thickest walls?

• A) Capillaries
• B) Veins
• C) Arterioles
• D) Arteries (Correct answer: D) Arteries

QRS complex represents _____.

• A) Atrial systole
• B) Ventricular diastole
• C) Atrial diastole
• D) Ventricular systole (Correct answer: D) Ventricular systole

Tricuspid valve is present _____.

• A) Between left atrium and left ventricle
• B) Between right atrium and right ventricle
• C) Between left atrium and right ventricle
• D) Between right atrium and left ventricle (Correct answer: B) Between right atrium and right ventricle

Cooley’s anemia is another name used for _____.

• A) Hemochromatosis
• B) Thalassaemia
• C) Sickle cell anemia
• D) Polycythemia (Correct answer: B) Thalassaemia

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