General Science & GK: Non-Nursing Section Quiz
While Nursing subjects form the core of competitive exams, the Non-Nursing Section (General Science & Aptitude) often decides the merit list. Exams like AIIMS NORCET (20 Marks) and RRB Staff Nurse lay heavy emphasis on General Awareness.
In today's Daily Mock Test, we focus on General Science basics. This quiz covers high-yield questions on Basic Biology (Cell structure, Human Body Facts), Chemistry (pH, Acids, Bases), and Everyday Science. Strengthening this section gives you an edge over other candidates.
General Awareness & Science
Q1.Question:
Which of the following is the longest and strongest bone in the human body?
Which of the following is the longest and strongest bone in the human body?
A. Humerus
B. Tibia
C. Femur
D. Fibula
View Answer & Rationale
Answer: C
Rationale: The Femur (thigh bone) is the longest, heaviest, and strongest bone in the body, supporting the weight of the upper body. Option A (Humerus) is in the arm. Option B and D are bones of the lower leg, smaller than the femur.
Source: www.logyanlo.in
Q2.Question:
Which cell organelle is known as the "Powerhouse of the Cell"?
Which cell organelle is known as the "Powerhouse of the Cell"?
A. Ribosome
B. Mitochondria
C. Lysosome
D. Golgi Apparatus
View Answer & Rationale
Answer: B
Rationale: Mitochondria generate most of the cell's supply of Adenosine Triphosphate (ATP), used as a source of chemical energy. Option A produces proteins. Option C is the "suicide bag" involved in digestion.
Source: www.logyanlo.in
Q3.Question:
The pH value of normal human blood is approximately:
The pH value of normal human blood is approximately:
A. 6.4
B. 7.0
C. 7.4
D. 8.0
View Answer & Rationale
Answer: C
Rationale: Human blood is slightly alkaline, with a strictly regulated pH range of 7.35 to 7.45. Values below this indicate acidosis (Option A), and values significantly higher indicate alkalosis.
Source: www.logyanlo.in
Q4.Question:
Which gland is referred to as the "Master Gland" of the human body?
Which gland is referred to as the "Master Gland" of the human body?
A. Thyroid Gland
B. Adrenal Gland
C. Pituitary Gland
D. Pancreas
View Answer & Rationale
Answer: C
Rationale: The Pituitary Gland regulates the function of many other endocrine glands (thyroid, adrenals, gonads) through its hormones. Option A regulates metabolism. Option B regulates stress response.
Source: www.logyanlo.in
Q5.Question:
The enzyme "Ptyalin" (Salivary Amylase) found in saliva helps in the digestion of:
The enzyme "Ptyalin" (Salivary Amylase) found in saliva helps in the digestion of:
A. Proteins
B. Fats
C. Starch
D. Vitamins
View Answer & Rationale
Answer: C
Rationale: Ptyalin initiates the hydrolysis of starch (carbohydrates) into simpler sugars like maltose in the mouth. Proteins (Option A) are digested by pepsin in the stomach. Fats (Option B) are digested by lipase.
Source: www.logyanlo.in
Q6.Question:
What is the total number of chromosomes in a normal human somatic cell?
What is the total number of chromosomes in a normal human somatic cell?
A. 23
B. 44
C. 46
D. 48
View Answer & Rationale
Answer: C
Rationale: Humans have 23 pairs of chromosomes, making a total of 46. This includes 22 pairs of autosomes and 1 pair of sex chromosomes. Option A is the number in gametes (haploid).
Source: www.logyanlo.in
Q7.Question:
Which is the largest internal organ in the human body?
Which is the largest internal organ in the human body?
A. Skin
B. Liver
C. Heart
D. Lung
View Answer & Rationale
Answer: B
Rationale: The Liver is the largest internal organ and gland. Option A (Skin) is the largest organ overall (external). Option D (Lungs) are large but lighter and smaller in mass than the liver.
Source: www.logyanlo.in
Q8.Question:
Red Blood Cells (RBCs) are formed in which part of the adult human body?
Red Blood Cells (RBCs) are formed in which part of the adult human body?
A. Liver
B. Heart
C. Red Bone Marrow
D. Kidney
View Answer & Rationale
Answer: C
Rationale: Erythropoiesis (RBC formation) occurs in the Red Bone Marrow of flat and long bones in adults. Option A (Liver) is the site of hematopoiesis in the fetus. Option D produces Erythropoietin which stimulates the process.
Source: www.logyanlo.in
Q9.Question:
The structural and functional unit of the Kidney is called:
The structural and functional unit of the Kidney is called:
A. Neuron
B. Nephron
C. Alveoli
D. Villi
View Answer & Rationale
Answer: B
Rationale: The Nephron is the microscopic unit responsible for filtering blood and forming urine. Option A (Neuron) is the unit of the nervous system. Option C (Alveoli) is the unit of lungs.
Source: www.logyanlo.in
Q10.Question:
Which metal is present in the Hemoglobin of blood?
Which metal is present in the Hemoglobin of blood?
A. Magnesium
B. Calcium
C. Iron
D. Sodium
View Answer & Rationale
Answer: C
Rationale: Iron (Fe) is the central metal ion in the Heme group of Hemoglobin, essential for binding and transporting oxygen. Option A (Magnesium) is found in Chlorophyll.
Source: www.logyanlo.in
Q11.Question:
Which blood group is known as the "Universal Donor"?
Which blood group is known as the "Universal Donor"?
A. Group A
B. Group B
C. Group AB
D. Group O
View Answer & Rationale
Answer: D
Rationale: Blood Group O (specifically O negative) lacks A and B antigens on the red blood cells, allowing it to be transfused into persons of any blood group without triggering an immune reaction. Option C (AB) is the Universal Recipient.
Source: www.logyanlo.in
Q12.Question:
Which part of the human brain is responsible for maintaining posture, balance, and equilibrium?
Which part of the human brain is responsible for maintaining posture, balance, and equilibrium?
A. Cerebrum
B. Cerebellum
C. Medulla Oblongata
D. Hypothalamus
View Answer & Rationale
Answer: B
Rationale: The Cerebellum coordinates voluntary movements and maintains muscle tone and balance. Option A (Cerebrum) handles higher functions like thought and memory. Option C controls involuntary functions like heartbeat.
Source: www.logyanlo.in
Q13.Question:
Which is the hardest substance in the human body?
Which is the hardest substance in the human body?
A. Skull bone
B. Enamel
C. Dentine
D. Femur
View Answer & Rationale
Answer: B
Rationale: Tooth Enamel, made of calcium phosphate (hydroxyapatite), is the hardest and most highly mineralized substance in the body, protecting the teeth. Option C (Dentine) is hard but softer than enamel.
Source: www.logyanlo.in
Q14.Question:
What is the average life span of Red Blood Cells (RBCs) in humans?
What is the average life span of Red Blood Cells (RBCs) in humans?
A. 60 days
B. 90 days
C. 120 days
D. 150 days
View Answer & Rationale
Answer: C
Rationale: Healthy RBCs circulate for approximately 120 days before being destroyed/recycled by the spleen (the graveyard of RBCs).
Source: www.logyanlo.in
Q15.Question:
In the human eye, the image of an object is formed on the:
In the human eye, the image of an object is formed on the:
A. Cornea
B. Iris
C. Pupil
D. Retina
View Answer & Rationale
Answer: D
Rationale: The Retina contains light-sensitive cells (rods and cones) where the lens focuses light to form a real and inverted image. Option A (Cornea) refracts light but does not capture the image.
Source: www.logyanlo.in
Q16.Question:
Which part of the eye is transplanted during "Eye Donation"?
Which part of the eye is transplanted during "Eye Donation"?
A. Whole Eye
B. Retina
C. Cornea
D. Lens
View Answer & Rationale
Answer: C
Rationale: The Cornea is an avascular tissue (no blood supply), making it easy to transplant with very low risk of rejection. The whole eye or retina cannot be transplanted to restore vision.
Source: www.logyanlo.in
Q17.Question:
The smallest bone in the human body, "Stapes", is located in the:
The smallest bone in the human body, "Stapes", is located in the:
A. Nose
B. Ear
C. Finger
D. Toe
View Answer & Rationale
Answer: B
Rationale: The Stapes (stirrup) is one of the three auditory ossicles found in the middle ear, transmitting vibrations. Option A, C, and D contain larger bones like nasal bones or phalanges.
Source: www.logyanlo.in
Q18.Question:
Insulin, a hormone that regulates blood sugar, is secreted by which cells of the Pancreas?
Insulin, a hormone that regulates blood sugar, is secreted by which cells of the Pancreas?
A. Alpha cells
B. Beta cells
C. Delta cells
D. Acinar cells
View Answer & Rationale
Answer: B
Rationale: Beta cells in the Islets of Langerhans produce Insulin to lower blood glucose. Option A (Alpha cells) secrete Glucagon, which raises blood glucose.
Source: www.logyanlo.in
Q19.Question:
How many pairs of ribs are there in the human thoracic cage?
How many pairs of ribs are there in the human thoracic cage?
A. 10 pairs
B. 12 pairs
C. 14 pairs
D. 6 pairs
View Answer & Rationale
Answer: B
Rationale: Humans typically have 12 pairs of ribs (24 total). The first 7 are "true ribs", the next 3 are "false ribs", and the last 2 are "floating ribs".
Source: www.logyanlo.in
Q20.Question:
Accumulation of which substance in muscles causes fatigue after strenuous exercise?
Accumulation of which substance in muscles causes fatigue after strenuous exercise?
A. Pyruvic Acid
B. Lactic Acid
C. Uric Acid
D. Carbon Dioxide
View Answer & Rationale
Answer: B
Rationale: During anaerobic respiration (lack of oxygen), glucose breaks down into Lactic Acid in muscles, causing cramps and fatigue. Option C (Uric Acid) causes Gout.
Source: www.logyanlo.in
Q21.Question:
Which organ is known as the "Voice Box"?
Which organ is known as the "Voice Box"?
A. Pharynx
B. Larynx
C. Trachea
D. Epiglottis
View Answer & Rationale
Answer: B
Rationale: The Larynx contains the vocal cords that vibrate to produce sound. Option A (Pharynx) is the throat passage. Option C (Trachea) is the windpipe.
Source: www.logyanlo.in
Q22.Question:
The membrane covering the heart is called:
The membrane covering the heart is called:
A. Pleura
B. Pericardium
C. Peritoneum
D. Meninges
View Answer & Rationale
Answer: B
Rationale: The Pericardium is the double-walled sac containing the heart. Option A (Pleura) covers the lungs. Option C (Peritoneum) covers abdominal organs. Option D (Meninges) covers the brain/spine.
Source: www.logyanlo.in
Q23.Question:
The pigment responsible for the color of human skin is:
The pigment responsible for the color of human skin is:
A. Keratin
B. Melanin
C. Hemoglobin
D. Myoglobin
View Answer & Rationale
Answer: B
Rationale: Melanin is produced by melanocytes and determines skin, hair, and eye color while protecting against UV radiation. Option A (Keratin) is a structural protein in hair/nails.
Source: www.logyanlo.in
Q24.Question:
Which part of the brain regulates body temperature, hunger, and thirst?
Which part of the brain regulates body temperature, hunger, and thirst?
A. Thalamus
B. Hypothalamus
C. Hippocampus
D. Cerebellum
View Answer & Rationale
Answer: B
Rationale: The Hypothalamus is the body's thermostat and homeostasis center, linking the nervous system to the endocrine system. Option C (Hippocampus) is involved in memory.
Source: www.logyanlo.in
Q25.Question:
Which vein carries oxygenated blood from the lungs to the heart?
Which vein carries oxygenated blood from the lungs to the heart?
A. Pulmonary Vein
B. Pulmonary Artery
C. Superior Vena Cava
D. Renal Vein
View Answer & Rationale
Answer: A
Rationale: The Pulmonary Vein is the only vein that carries oxygen-rich blood (from lungs to left atrium). Option B (Pulmonary Artery) carries deoxygenated blood.
Source: www.logyanlo.in
Q26.Question:
Digestion of proteins begins in which organ?
Digestion of proteins begins in which organ?
A. Mouth
B. Stomach
C. Small Intestine
D. Esophagus
View Answer & Rationale
Answer: B
Rationale: The enzyme Pepsin in the stomach begins breaking down proteins into peptides. In the mouth (Option A), only carbohydrates are digested.
Source: www.logyanlo.in
Q27.Question:
How many pairs of Spinal Nerves are found in humans?
How many pairs of Spinal Nerves are found in humans?
A. 12
B. 31
C. 33
D. 10
View Answer & Rationale
Answer: B
Rationale: There are 31 pairs of spinal nerves (8 cervical, 12 thoracic, 5 lumbar, 5 sacral, 1 coccygeal). Option A (12) is the number of Cranial Nerve pairs.
Source: www.logyanlo.in
Q28.Question:
Which is the largest type of White Blood Cell (WBC)?
Which is the largest type of White Blood Cell (WBC)?
A. Neutrophil
B. Lymphocyte
C. Monocyte
D. Basophil
View Answer & Rationale
Answer: C
Rationale: Monocytes are the largest leukocytes with a kidney-shaped nucleus, later maturing into macrophages. Option B (Lymphocytes) are the smallest.
Source: www.logyanlo.in
Q29.Question:
The "Islets of Langerhans" are located in:
The "Islets of Langerhans" are located in:
A. Liver
B. Spleen
C. Pancreas
D. Stomach
View Answer & Rationale
Answer: C
Rationale: The Islets of Langerhans are the endocrine patches within the Pancreas containing Alpha and Beta cells. Option B (Spleen) filters blood.
Source: www.logyanlo.in
Q30.Question:
Bile is produced by the liver but stored in the:
Bile is produced by the liver but stored in the:
A. Pancreas
B. Gallbladder
C. Stomach
D. Duodenum
View Answer & Rationale
Answer: B
Rationale: The Gallbladder concentrates and stores bile produced by the liver until it is needed for fat digestion in the small intestine. Option A (Pancreas) produces digestive enzymes.
Source: www.logyanlo.in
Q31.Question:
Which of the following hormones is known as the "Emergency Hormone" or "Fight or Flight Hormone"?
Which of the following hormones is known as the "Emergency Hormone" or "Fight or Flight Hormone"?
A. Thyroxine
B. Adrenaline (Epinephrine)
C. Insulin
D. Estrogen
View Answer & Rationale
Answer: B
Rationale: Adrenaline is secreted by the adrenal medulla during stress, increasing heart rate and blood flow to muscles to prepare the body for action. Option A regulates metabolism.
Source: www.logyanlo.in
Q32.Question:
The normal diastolic blood pressure in a healthy adult human is:
The normal diastolic blood pressure in a healthy adult human is:
A. 120 mmHg
B. 80 mmHg
C. 100 mmHg
D. 60 mmHg
View Answer & Rationale
Answer: B
Rationale: Normal blood pressure is 120/80 mmHg. The lower value (80) is the diastolic pressure (when the heart rests), and the higher value (120) is systolic pressure.
Source: www.logyanlo.in
Q33.Question:
Which of the following vitamins is water-soluble?
Which of the following vitamins is water-soluble?
A. Vitamin A
B. Vitamin D
C. Vitamin C
D. Vitamin K
View Answer & Rationale
Answer: C
Rationale: Vitamins B and C are water-soluble and must be replenished daily. Vitamins A, D, E, and K are fat-soluble and stored in the body.
Source: www.logyanlo.in
Q34.Question:
The "Suicide Bag" of the cell is:
The "Suicide Bag" of the cell is:
A. Ribosome
B. Lysosome
C. Vacuole
D. Centrosome
View Answer & Rationale
Answer: B
Rationale: Lysosomes contain hydrolytic enzymes capable of digesting the cell itself if it is damaged or old (autolysis). Option A (Ribosome) synthesizes proteins.
Source: www.logyanlo.in
Q35.Question:
Which part of the human alimentary canal is the longest?
Which part of the human alimentary canal is the longest?
A. Stomach
B. Large Intestine
C. Small Intestine
D. Esophagus
View Answer & Rationale
Answer: C
Rationale: The Small Intestine is roughly 6-7 meters long (but narrow in diameter), providing a large surface area for nutrient absorption. The Large Intestine is shorter (1.5 m) but wider.
Source: www.logyanlo.in
Q36.Question:
"Dialysis" is used for the treatment of patients with:
"Dialysis" is used for the treatment of patients with:
A. Heart Failure
B. Kidney Failure
C. Liver Failure
D. Lung Failure
View Answer & Rationale
Answer: B
Rationale: Dialysis artificially removes waste and excess water from the blood, performing the function of the kidneys when they fail (ESRD).
Source: www.logyanlo.in
Q37.Question:
The main function of White Blood Cells (WBCs) is to:
The main function of White Blood Cells (WBCs) is to:
A. Transport Oxygen
B. Act as an infection barrier and fight disease
C. Help in blood clotting
D. Transport nutrients
View Answer & Rationale
Answer: B
Rationale: Leukocytes (WBCs) are the immune system's primary defense against pathogens. Option A is the function of RBCs. Option C is the function of Platelets.
Source: www.logyanlo.in
Q38.Question:
Which instrument is used to measure Blood Pressure?
Which instrument is used to measure Blood Pressure?
A. Thermometer
B. Barometer
C. Sphygmomanometer
D. Glucometer
View Answer & Rationale
Answer: C
Rationale: A Sphygmomanometer (BP cuff) is the standard device for measuring arterial blood pressure. Option B measures atmospheric pressure. Option D measures blood sugar.
Source: www.logyanlo.in
Q39.Question:
The "Pacemaker" of the heart is:
The "Pacemaker" of the heart is:
A. AV Node
B. SA Node
C. Bundle of His
D. Purkinje Fibers
View Answer & Rationale
Answer: B
Rationale: The Sinoatrial (SA) Node initiates the electrical impulses that set the rhythm of the heart contraction. Option A acts as a gatekeeper/delayer.
Source: www.logyanlo.in
Q40.Question:
Which gland disappears or shrinks significantly during old age?
Which gland disappears or shrinks significantly during old age?
A. Thyroid
B. Thymus
C. Parathyroid
D. Pituitary
View Answer & Rationale
Answer: B
Rationale: The Thymus gland is active in childhood for T-cell maturation but undergoes involution (shrinks and turns to fat) after puberty.
Source: www.logyanlo.in
Q41.Question:
The breakdown of glucose to pyruvate during respiration takes place in the:
The breakdown of glucose to pyruvate during respiration takes place in the:
A. Mitochondria
B. Cytoplasm
C. Nucleus
D. Endoplasmic Reticulum
View Answer & Rationale
Answer: B
Rationale: Glycolysis (the first step of respiration) occurs in the Cytoplasm and does not require oxygen. Further breakdown (Krebs cycle) happens in Mitochondria (Option A).
Source: www.logyanlo.in
Q42.Question:
Which component of blood is responsible for clotting?
Which component of blood is responsible for clotting?
A. RBC
B. WBC
C. Platelets
D. Plasma
View Answer & Rationale
Answer: C
Rationale: Platelets (Thrombocytes) aggregate at the site of injury and release factors to form a clot. Option D (Plasma) contains clotting proteins but Platelets trigger the plug.
Source: www.logyanlo.in
Q43.Question:
The dental formula for permanent teeth in humans is:
The dental formula for permanent teeth in humans is:
A. 2123/2123
B. 2102/2102
C. 2122/2122
D. 2233/2233
View Answer & Rationale
Answer: A
Rationale: In each quadrant: 2 Incisors, 1 Canine, 2 Premolars, 3 Molars. Total = 32 teeth. Option B is for deciduous (milk) teeth (2102).
Source: www.logyanlo.in
Q44.Question:
Which acid is produced in the human stomach to aid digestion?
Which acid is produced in the human stomach to aid digestion?
A. Sulfuric Acid
B. Nitric Acid
C. Hydrochloric Acid
D. Acetic Acid
View Answer & Rationale
Answer: C
Rationale: Parietal cells secrete Hydrochloric Acid (HCl), creating an acidic environment (pH 1.5-2) essential for pepsin activation and killing bacteria.
Source: www.logyanlo.in
Q45.Question:
"Goitre" is caused by the deficiency of:
"Goitre" is caused by the deficiency of:
A. Iron
B. Calcium
C. Iodine
D. Potassium
View Answer & Rationale
Answer: C
Rationale: Iodine is required for Thyroid hormone synthesis. Deficiency causes the Thyroid gland to enlarge (Goitre) in an attempt to capture more iodine.
Source: www.logyanlo.in
Q46.Question:
Which of the following is a "Vestigial Organ" in the human body?
Which of the following is a "Vestigial Organ" in the human body?
A. Spleen
B. Appendix
C. Gallbladder
D. Pancreas
View Answer & Rationale
Answer: B
Rationale: The Vermiform Appendix is considered a vestigial remnant of the cecum, having lost its original digestive function in humans. Options A, C, and D are vital functional organs.
Source: www.logyanlo.in
Q47.Question:
The normal gestation period (duration of pregnancy) in humans is approximately:
The normal gestation period (duration of pregnancy) in humans is approximately:
A. 250 days
B. 280 days
C. 300 days
D. 365 days
View Answer & Rationale
Answer: B
Rationale: The standard gestation is 40 weeks or 280 days from the Last Menstrual Period (LMP).
Source: www.logyanlo.in
Q48.Question:
Which protein constitutes the main component of hair and nails?
Which protein constitutes the main component of hair and nails?
A. Collagen
B. Keratin
C. Elastin
D. Myosin
View Answer & Rationale
Answer: B
Rationale: Keratin is a tough, fibrous structural protein found in hair, nails, and the outer layer of skin. Option A (Collagen) is in connective tissue.
Source: www.logyanlo.in
Q49.Question:
The smallest functional unit of the nervous system is:
The smallest functional unit of the nervous system is:
A. Brain
B. Spinal Cord
C. Neuron
D. Nerve
View Answer & Rationale
Answer: C
Rationale: The Neuron (nerve cell) is the fundamental unit responsible for transmitting electrical signals.
Source: www.logyanlo.in
Q50.Question:
Universal Recipient blood group is:
Universal Recipient blood group is:
A. A+
B. O-
C. AB+
D. B+
View Answer & Rationale
Answer: C
Rationale: AB+ individuals have both A and B antigens on RBCs and no antibodies in plasma, plus the Rh antigen, allowing them to receive blood from any group (A, B, AB, O, +/-).
Source: www.logyanlo.in
Q51.Question:
Which of the following tissues connects muscle to bone?
Which of the following tissues connects muscle to bone?
A. Ligament
B. Tendon
C. Cartilage
D. Areolar tissue
View Answer & Rationale
Answer: B
Rationale: A Tendon is the fibrous connective tissue that attaches muscle to bone. Option A (Ligament) connects bone to bone. Option C (Cartilage) cushions joints.
Source: www.logyanlo.in
Q52.Question:
"Osteoporosis" is a condition primarily associated with the deficiency of:
"Osteoporosis" is a condition primarily associated with the deficiency of:
A. Iron
B. Calcium and Vitamin D
C. Potassium
D. Iodine
View Answer & Rationale
Answer: B
Rationale: Calcium and Vitamin D are essential for bone density. Deficiency leads to porous, brittle bones (Osteoporosis), especially in post-menopausal women and the elderly.
Source: www.logyanlo.in
Q53.Question:
The normal resting heart rate for a healthy adult is approximately:
The normal resting heart rate for a healthy adult is approximately:
A. 40-50 beats/min
B. 60-100 beats/min
C. 100-120 beats/min
D. 120-140 beats/min
View Answer & Rationale
Answer: B
Rationale: The standard normal range for resting heart rate is 60 to 100 bpm. <60 is Bradycardia, >100 is Tachycardia. Athletes may have lower rates (40-60).
Source: www.logyanlo.in
Q54.Question:
Which gland controls the "Circadian Rhythm" (sleep-wake cycle) by secreting Melatonin?
Which gland controls the "Circadian Rhythm" (sleep-wake cycle) by secreting Melatonin?
A. Pituitary Gland
B. Pineal Gland
C. Thyroid Gland
D. Adrenal Gland
View Answer & Rationale
Answer: B
Rationale: The Pineal Gland (located in the brain) produces Melatonin in response to darkness, regulating biological clocks. Option A controls growth/hormones.
Source: www.logyanlo.in
Q55.Question:
Which part of the blood carries the majority of Carbon Dioxide (CO2) from tissues to lungs?
Which part of the blood carries the majority of Carbon Dioxide (CO2) from tissues to lungs?
A. RBCs (as Carbaminohemoglobin)
B. Plasma (as Bicarbonate ions)
C. WBCs
D. Platelets
View Answer & Rationale
Answer: B
Rationale: About 70% of CO2 is transported dissolved in plasma as Bicarbonate ions (HCO3-). Only about 20-25% binds to Hemoglobin (Option A).
Source: www.logyanlo.in
Q56.Question:
What is the name of the fluid found between the joints that reduces friction?
What is the name of the fluid found between the joints that reduces friction?
A. Spinal Fluid
B. Synovial Fluid
C. Amniotic Fluid
D. Pericardial Fluid
View Answer & Rationale
Answer: B
Rationale: Synovial Fluid is the viscous lubricant found in synovial cavities (moveable joints) like the knee and elbow. Option A is in the spine. Option C surrounds a fetus.
Source: www.logyanlo.in
Q57.Question:
The "Power of Accommodation" of the eye is the ability of the lens to change its:
The "Power of Accommodation" of the eye is the ability of the lens to change its:
A. Color
B. Focal Length
C. Size
D. Position
View Answer & Rationale
Answer: B
Rationale: The ciliary muscles modify the curvature of the lens, changing its focal length to focus on near or distant objects.
Source: www.logyanlo.in
Q58.Question:
Which of the following is the largest lymphatic organ in the human body?
Which of the following is the largest lymphatic organ in the human body?
A. Tonsils
B. Thymus
C. Spleen
D. Lymph Node
View Answer & Rationale
Answer: C
Rationale: The Spleen is the largest organ of the lymphatic system, acting as a blood filter and storage for immune cells. Option B (Thymus) is largest in children but shrinks later.
Source: www.logyanlo.in
Q59.Question:
Deficiency of Vitamin C causes which disease?
Deficiency of Vitamin C causes which disease?
A. Rickets
B. Beri-Beri
C. Scurvy
D. Night Blindness
View Answer & Rationale
Answer: C
Rationale: Scurvy (bleeding gums, weak collagen) is the classic deficiency disease of Vitamin C (Ascorbic Acid). Option A is Vit D. Option B is Vit B1. Option D is Vit A.
Source: www.logyanlo.in
Q60.Question:
In the human body, urea is produced in the:
In the human body, urea is produced in the:
A. Kidney
B. Liver
C. Urinary Bladder
D. Spleen
View Answer & Rationale
Answer: B
Rationale: The Liver converts toxic Ammonia (a byproduct of protein metabolism) into Urea via the Urea Cycle. The Kidneys (Option A) then filter and excrete it.
Source: www.logyanlo.in
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Frequently Asked Questions (Gen. Science)
Q1: What is the normal pH of human blood?
Ans: The normal pH of human blood is slightly alkaline, ranging from 7.35 to 7.45. A value below 7.35 is Acidosis, and above 7.45 is Alkalosis.
Q2: Which organ is known as the "Powerhouse of the Cell"?
Ans: The Mitochondria is known as the powerhouse of the cell because it generates most of the cell's supply of Adenosine Triphosphate (ATP), used as a source of chemical energy.
Q3: Which gas is most abundant in the Earth's atmosphere?
Ans: Nitrogen is the most abundant gas, making up about 78% of the Earth's atmosphere. Oxygen is second at about 21%.
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