datavorous/entrance-exam-dataset huggingface dataset:
What is the expectation regarding the future usage of dihydrogen as a common source of energy?

Options:
A It will replace all other sources of energy
B It will remain limited to a few specialized applications
C Economically viable and safe sources of dihydrogen will be identified
D It will only be used in hydrogen fuel cells

The correct answer is:
Economically viable and safe sources of dihydrogen will be identified

Solution:
The expectation regarding the future usage of dihydrogen as a common source of energy is that economically viable and safe sources of dihydrogen will be identified in the years to come.

Topic: Chemistry, Hydrogen, NEET
What is the expected trend in electron gain enthalpy as you go down a group in the periodic table?

Options:
A It becomes more negative.
B It becomes less negative.
C It remains constant.
D It fluctuates randomly.

The correct answer is:
It becomes less negative.

Solution:
Electron gain enthalpy is expected to become less negative as you go down a group in the periodic table because the size of the atom increases, and the added electron would be farther from the nucleus.

Topic: Chemistry, Classification of Elements and Periodicity in Properties, NEET
What is the fate of over half of e-waste generated in developed countries?

Options:
A Buried in landfills in developed countries
B Incinerated in developed countries
C Exported to developing countries
D Recycled in developed countries

The correct answer is:
Exported to developing countries

Solution:
Over half of e-waste generated in developed countries is exported to developing countries, mainly to China, India, and Pakistan.

Topic: Biology, Environmental Issues, NEET
What is the feature of the vascular bundles in monocot leaves?

Options:
A They are surrounded by a layer of thick-walled bundle sheath cells
B They are of similar sizes except in main veins
C They have reticulate venation
D They have a large number of large spaces and air cavities between the cells

The correct answer is:
They are of similar sizes except in main veins

Solution:
The parallel venation in monocot leaves is reflected in the near similar sizes of vascular bundles (except in main veins) as seen in vertical sections of the leaves.

Topic: Biology, Anatomy of Flowering Plants, NEET
What is the final product (major) 'A' in the given reaction?

Major product among the following is?

Options:
A
B
C
D

The correct answer is:

Solution:

Topic: Chemistry, Alcohols Phenols and Ethers, JEE Main, JEE Main 2021 (24 Feb Shift 1)
What is the final product of following reactions?

Options:
A
B
C
D

The correct answer is:

Solution:
Here the final product formed is Hept-4-yn-1-oic acid as follows

Topic: Chemistry, Carboxylic Acid Derivatives, JEE Main
What is the final step in genetically modifying an organism?

Options:
A Identification of DNA with desirable genes
B Introduction of the identified DNA into the host
C Maintenance of introduced DNA in the host and transfer to its progeny
D Cloning of the desired genes in E. coli

The correct answer is:
Maintenance of introduced DNA in the host and transfer to its progeny

Solution:
The final step in genetically modifying an organism is the maintenance of introduced DNA in the host and transfer to its progeny.

Topic: Biology, Biotechnology - Principles and Processes, NEET
What is the first kind of PGR to be discovered among the gibberellins?

Options:
A GA1
B GA2
C GA3
D GA4

The correct answer is:
GA3

Solution:
Gibberellic acid (GA3) was one of the first gibberellins to be discovered and remains the most intensively studied form.

Topic: Biology, Plant - Growth and Development, NEET
What is the first step in genetically modifying an organism?

Options:
A Identification of DNA with desirable genes
B Introduction of the identified DNA into the host
C Maintenance of introduced DNA in the host and transfer to its progeny
D Cloning of the desired genes in E. coli

The correct answer is:
Identification of DNA with desirable genes

Solution:
The first step in genetically modifying an organism is the identification of DNA with desirable genes.

Topic: Biology, Biotechnology - Principles and Processes, NEET
What is the food habit of the original variety of Darwin's finches from which many other varieties are developed?

Options:
A Seed eater
B Cactus eater
C Wood pecker
D Fruit eater

The correct answer is:
Seed eater

Solution:
Darwin studied the flora and fauna of Galapagos Islands, a chain of islands on the west coast of South America. There he found an amazing range of creatures existing. He found that there were many varieties of small blackbirds in these islands which differed mainly in the shape of beaks and feeding habits. These varieties of small blackbirds were later called Darwin’s Finches. After analyzing them, he realized that all of these varieties evolved on the same island itself and were not from separate areas. He conjectured that these varieties evolved from the original seed-eating ancestor bird which was present in South America. Some of them flew to these islands and according to the needs of different environments, they developed different shapes of beaks and feeding habits. Some became insect-eating, some fruit-eating, some cactus eating, etc.

Topic: Biology, Evolution, NEET
What is the formula for the preparation of soaps?

Options:
A vegetable oil or Animal fat \( + \) Sodium hydroxide \( \frac{\text { Saponification }}{\Delta} \) Glycerol \( + \) Sodium salt of fatty acid (Soap)
B vegetable oil or Animal fat \( + \) Sodium dihydroxide \( \frac{\text { Saponification }}{\Delta} \) Glycerol \( + \) Sodium salt of fatty acid \( ( \) Soap \( ) \)
C retable oil or Animal fat \( + \) Sodium hydroxide \( \frac{\text { Saponification }}{\Delta} \) Glyceraldehyde \( + \) Sodium salt of fatty acid (Soap)
D All of the above

The correct answer is:
vegetable oil or Animal fat \( + \) Sodium hydroxide \( \frac{\text { Saponification }}{\Delta} \) Glycerol \( + \) Sodium salt of fatty acid (Soap)

Solution:
Soaps are made from animal fats or vegetable oils. They contain glyceryl esters of long chain fatty acids. When the glycerides are heated with a solution of sodium hydroxide they become soap and glycerol. We have already learnt this reaction under the preparation of glycerol by saponification. Common salt is added to the reaction mixture to decrease the solubility of soap and it helps to precipitate out from the aqueous solution. Soap is then mixed with desired colours, perfumes and chemicals of medicinal importance.vegetable oil or Animal fat + Sodium hydroxide→∆SaponificationGlycerol + Sodium salt of fatty acid (Soap)

Topic: Chemistry, Chemistry in Everyday Life, JEE Main
What is the freezing point of a solution containing 8.1 g HBr in 100 g water, assuming that the acid to be 90% ionized KfH2O=1.86 Kkgmol-1 .

Options:
A 0.85°C
B +3.53°C
C 0°C
D -3.5°C

The correct answer is:
-3.5°C

Solution:
HBrâH++Brâ

i=1âÎ±+nx

n=2

i=1+Î±

ÎÎ¤g=i kgÃm

ÎÎ¤g=1âÎ±1.86Ã8.181Ã1000100

ÎÎ¤g=1+9Ã1.86Ã8.181Ã10

ÎÎ¤g=3.56

Tgo=0Â°C

ÎÎ¤g=TgoâTg

Tg= - 3.534Â°C

Topic: Chemistry, Solutions, JEE Main
What is the frequency of tuning fork B when not loaded in the scenario where a tuning fork A, marked 512 Hz, produces 5 beats per second when sounded with tuning fork B, and the number of beats remains at 5 per second when tuning fork B is loaded with wax?

Options:
A 507 Hz
B 509 Hz
C 511 Hz
D 517 Hz

The correct answer is:
517 Hz

Solution:
Correct Option is : (D)
517 Hz

Topic: Chemistry, Waves and Sound, NEET
What is the function described to Eustachian tube?

Options:

None

Solution:
The eustachian tube forms connection between the middle ear cavity with the pharynx. It helps in equalising the pressure on either sides of the ear drum. At the pharyngeal opening of the eustachian tube there is a valve which normally remains closed.
The valve opens during yawning, swallowing and during an abrupt change in altitude, when air enters or leaves the tympanic cavity to equalise the pressure of air on the two sides of the tympanic membrane.

Topic: Biology, Neural Control and Coordination
What is the function of albumins in the plasma?

Options:
A Involved in defense mechanisms of the body
B Help in osmotic balance
C Needed for clotting or coagulation of blood
D Glucose metabolism

The correct answer is:
Help in osmotic balance

Solution:
Albumins are a type of protein found in plasma and play an important role in maintaining osmotic balance in the body.

Topic: Biology, Body Fluids and Circulation, NEET
What is the function of androgens secreted by the testis?

Options:
A Maturation and functions of male accessory sex organs
B Development of female accessory sex organs
C Maintenance of pregnancy
D Stimulation of digestive juices secretion

The correct answer is:
Maturation and functions of male accessory sex organs

Solution:
Androgens secreted by the testis stimulate the development, maturation, and functions of the male accessory sex organs, appearance of male secondary sex characters, spermatogenesis, male sexual behavior, anabolic pathways, and erythropoiesis.

Topic: Biology, Chemical Coordination and Integration, NEET
What is the function of diakinesis stage?

Options:
A To prepare the homologous chromosomes for separation
B To pair the chromosomes together
C To form the tetrads
D To form the synaptonemal complex

The correct answer is:
To prepare the homologous chromosomes for separation

Solution:
The main function of diakinesis stage is to prepare the homologous chromosomes for separation.

Topic: Biology, Cell Cycle and Cell Division, NEET
What is the function of Distal Convoluted Tubule (DCT) in urine formation?

Options:
A Reabsorption of essential nutrients
B Maintenance of osmolarity of medullary interstitial fluid
C Conditional reabsorption of Na⁺ and water
D Maintenance of pH and sodium-potassium balance in blood

The correct answer is:
Maintenance of pH and sodium-potassium balance in blood

Solution:
The DCT performs conditional reabsorption of Na⁺ and water and is also capable of reabsorbing HCO₃⁻ and selectively secreting hydrogen and potassium ions and NH₃ to maintain the pH and sodium-potassium balance in blooD)

Topic: Biology, Excretory Products and their Elimination, NEET
What is the function of eosinophils in the human body?

Options:
A Secretion of histamine and serotonin
B Destruction of foreign organisms
C Resistance of infections and involvement in allergic reactions
D Maintenance of osmotic balance

The correct answer is:
Resistance of infections and involvement in allergic reactions

Solution:
Eosinophils are a type of agranulocytes which are responsible for resisting infections and are also associated with allergic reactions.

Topic: Biology, Body Fluids and Circulation, NEET
What is the function of erythropoietin produced by the kidney?

Options:
A Stimulation of erythropoiesis
B Stimulation of digestion
C Decrease in blood Ca²⁺ levels
D Maintenance of pregnancy

The correct answer is:
Stimulation of erythropoiesis

Solution:
The kidney produces erythropoietin which stimulates erythropoiesis.

Topic: Biology, Chemical Coordination and Integration, NEET
What is the function of germ pore?

Options:
A Emergence of radicale
B Absorption of water for seed germination
C Initiation of pollen tube
D Release of male gametes

The correct answer is:
Initiation of pollen tube

Solution:
The pollen grain has two layers-outer exine and inner intine. Exine is made up of highly resistant sporopollenin while intine is pectocellulosic. At certain places exine is thin or absent called germpore or germinal furrow. After reaching on stigma the pollen grain absorbs water and nutrients from the stigmatic secretion through its germ pore. The tube or vegetative cell enlarges. It comes out of the pollen grain through one of the germ pores or germinal furrows to form a pollen tube.

Topic: Biology, Sexual Reproduction in Flowering Plants, NEET, NEET 2012 (Mains)
What is the function of goblet cells in the intestinal mucosa?

Options:
A To secrete enzymes
B To secrete mucus
C To digest carbohydrates
D To digest nucleic acids

The correct answer is:
To secrete mucus

Solution:
Goblet cells are present in the intestinal mucosa and secrete mucus, which helps to lubricate and protect the mucosa from acid. The mucus along with the bicarbonates from the pancreas also helps to maintain a neutral pH for enzymatic activities.

Topic: Biology, Digestion and Absorption, NEET
What is the function of insulin in the body?

Options:
A Decrease glucose levels in blood
B Increase glucose levels in blood
C Enhance glucose utilisation
D Decrease glucose utilisation

The correct answer is:
Decrease glucose levels in blood

Solution:
Insulin acts mainly on hepatocytes and adipocytes, and enhances cellular glucose uptake and utilisation. As a result, there is a rapid movement of glucose from blood to these cells, resulting in decreased blood glucose levels (hypoglycemia).

Topic: Biology, Chemical Coordination and Integration, NEET
What is the function of Kupffer's cells?

Options:
A Bile secretion
B Digestion of lipid
C Phagocytosis
D Digestion of protein

The correct answer is:
Phagocytosis

Solution:
The main function of Kupffer's cells is phagocytosis. They are specialised macrophages located in the liver, lining the walls of the sinusoids. Kupffer's cell activation is responsible for early ethanol induced liver injury, common in chronic alcoholics.

Topic: Biology, Digestion and Absorption, JIPMER, JIPMER 2018
What is the function of LH in males?

Options:
A Stimulation of androgens from the testis
B Regulation of spermatogenesis
C Induction of ovulation of fully mature follicles
D Maintenance of the corpus luteum

The correct answer is:
Stimulation of androgens from the testis

Solution:
In males, LH stimulates the synthesis and secretion of hormones called androgens from testis.

Topic: Biology, Chemical Coordination and Integration, NEET
What is the function of mucus in the intestinal juice?

Options:
A To aid in the digestion of carbohydrates
B To aid in the digestion of proteins
C To lubricate and protect the mucosa
D To maintain a neutral pH for enzymatic activities

The correct answer is:
To lubricate and protect the mucosa

Solution:
Mucus is a thick, slippery substance that is secreted by goblet cells in the intestinal mucosa and the submucosal glands. It helps to lubricate the mucosa and protect it from acid, as well as provide an alkaline medium for enzymatic activities.

Topic: Biology, Digestion and Absorption, NEET
What is the function of nephridia in annelids?

Options:
A Ionic and fluid volume regulation
B Nitrogenous waste removal
C Maintaining fluid and ionic balance
D Both nitrogenous waste removal and osmoregulation

The correct answer is:
Nitrogenous waste removal

Solution:
Nephridia in annelids help to remove nitrogenous wastes and maintain a fluid and ionic balance.

Topic: Biology, Excretory Products and their Elimination, NEET
What is the function of phloem parenchyma?

Options:

None

Solution:
The main function of phloem parenchyma is to store food and other substances like resins, latex and mucilage. They help in transport of food as well.

Topic: Biology, Anatomy of Flowering Plants
What is the function of photosynthesis in the atmosphere?

Options:
A Absorbs oxygen
B Releases carbon dioxide
C Releases oxygen
D Absorbs carbon dioxide

The correct answer is:
Releases oxygen

Solution:
Photosynthesis is responsible for the release of oxygen into the atmosphere by green plants, making it an important factor in maintaining life on earth.

Topic: Biology, Photosynthesis in Higher Plants, NEET
What is the function of Proximal Convoluted Tubule (PCT) in urine formation?

Options:
A Maintenance of high osmolarity of medullary interstitial fluid
B Reabsorption of essential nutrients, electrolytes and water
C Conditional reabsorption of Na⁺ and water
D Maintenance of pH and ionic balance of body fluids

The correct answer is:
Maintenance of pH and ionic balance of body fluids

Solution:
The PCT is lined by simple cuboidal brush border epithelium, which increases the surface area for reabsorption. Nearly all of the essential nutrients and 70-80% of electrolytes and water are reabsorbed by this segment, and it helps to maintain the pH and ionic balance of the body fluids by selective secretion of hydrogen ions and ammonia into the filtrate and by absorbing HCO₃⁻ from it.

Topic: Biology, Excretory Products and their Elimination, NEET
What is the function of Proximal Convoluted Tubule (PCT)?

Options:
A Reabsorb essential nutrients
B Secrete hydrogen ions and ammonia into the filtrate
C Absorb HCO₃⁻ from the filtrate
D All of the above

The correct answer is:
All of the above

Solution:
The PCT is lined by simple cuboidal brush border epithelium which increases the surface area for reabsorption. It helps in reabsorbing nearly all of the essential nutrients, and 70-80 percent of electrolytes and water. PCT also helps to maintain the pH and ionic balance of the body fluids by selective secretion of hydrogen ions and ammonia into the filtrate and by absorption of HCO₃⁻ from it.

Topic: Biology, Excretory Products and their Elimination, NEET
What is the function of sub-mucosal glands in the intestinal mucosa?

Options:
A To secrete enzymes
B To secrete mucus
C To protect the mucosa from acid
D To maintain a neutral pH for enzymatic activities

The correct answer is:
To protect the mucosa from acid

Solution:
Sub-mucosal glands, such as Brunner's glands, are present in the intestinal mucosa and secrete mucus and bicarbonates, which helps to protect the mucosa from acid and maintain a neutral pH for enzymatic activities

Topic: Biology, Digestion and Absorption, NEET
What is the function of the cell wall in bacteria?

Options:
A To provide structural support
B To act as a barrier against harmful substances
C To aid in nutrient absorption
D To aid in movement

The correct answer is:
To provide structural support

Solution:
The cell wall in bacteria provides a strong structural support to prevent the bacteria from bursting or collapsing, maintaining the shape of the cell.

Topic: Biology, Cell - The Unit of Life, NEET
What is the function of the epididymis in the male reproductive system?

Options:
A To store and transport sperms
B To facilitate insemination
C To secrete hormones
D To produce sperms

The correct answer is:
To store and transport sperms

Solution:
The epididymis is a duct located along the posterior surface of each testis. The vasa efferentia, which transport sperm from the testis, open into the epididymis. The epididymis then leads to the vas deferens which ascends to the abdomen and loops over the urinary bladder. The main function of the epididymis is to store and transport sperms from the testis to the outside through the urethra.

Topic: Biology, Human Reproduction, NEET
What is the function of the gallbladder?

Options:
A To produce bile
B To store and concentrate bile
C To transport bile
D To regulate blood sugar levels

The correct answer is:
To store and concentrate bile

Solution:
The gallbladder is a small, pear-shaped organ that is located just beneath the liver. Its main function is to store and concentrate bile, which is produced by the liver. When food is consumed, the gallbladder releases bile into the small intestine, where it helps to digest fats and absorb fat-soluble vitamins.

Topic: Biology, Digestion and Absorption, NEET
What is the function of the Glisson's capsule?

Options:
A To produce bile
B To store bile
C To cover the hepatic lobules
D To transport bile

The correct answer is:
To cover the hepatic lobules

Solution:
The Glisson's capsule is a thin connective tissue sheath that covers each lobule of the liver. Its main function is to cover and protect the hepatic lobules.

Topic: Biology, Digestion and Absorption, NEET
What is the function of the inter-atrial septum in the human heart?

Options:
A To separate the right and left ventricles
B To separate the right and left atria
C To initiate and maintain rhythmic contractile activity
D To divide into right and left bundle

The correct answer is:
To separate the right and left atria

Solution:
The inter-atrial septum is a thin, muscular wall that separates the right and left atria in the human heart.

Topic: Biology, Body Fluids and Circulation, NEET
What is the function of the Islets of Langerhans in the pancreas?

Options:
A Secrete hormones
B Regulate glucose metabolism
C Both A) and B)
D None of the above

The correct answer is:
Both A) and B)

Solution:
The Islets of Langerhans in the pancreas function as both endocrine and exocrine glands. They secrete hormones, such as insulin and glucagon, which regulate glucose metabolism and play a role in maintaining normal blood glucose levels.

Topic: Biology, Chemical Coordination and Integration, NEET
What is the function of the Loop of Henle in the excretory system?

Options:
A To regulate osmotic pressure
B To store urine
C To filter blood
D To secrete electrolytes

The correct answer is:
To regulate osmotic pressure

Solution:
The Loop of Henle primarily helps to maintain osmolar gradient within the kidney interstitium and regulate osmotic pressure.

Topic: Biology, Excretory Products and their Elimination, NEET
What is the function of the micropyle in a seed?

Options:
A To protect the ovules
B To store food reserves
C To facilitate the entry of oxygen and water into the seed
D To enter a state of dormancy

The correct answer is:
To facilitate the entry of oxygen and water into the seed

Solution:
The micropyle remains as a small pore in the seed coat and facilitates the entry of oxygen and water into the seed during germination.

Topic: Biology, Sexual Reproduction in Flowering Plants, NEET
What is the function of the mucosa layer?

Options:
A To protect the alimentary canal
B To control the movement of food
C To aid in absorption of nutrients
D To produce hormones

The correct answer is:
To aid in absorption of nutrients

Solution:
The mucosa layer is the innermost layer of the alimentary canal and its main function is to aid in the absorption of nutrients. This layer contains tiny finger-like projections called villi and microvilli, which increase the surface area for absorption.

Topic: Biology, Digestion and Absorption, NEET
What is the function of the mucosa layer?

Options:
A To protect the alimentary canal
B To control the movement of food
C To aid in absorption of nutrients
D To produce hormones

The correct answer is:
To aid in absorption of nutrients

Solution:
The mucosa layer is the innermost layer of the alimentary canal and it's main function is to aid in the absorption of nutrients. This layer contains tiny finger-like projections called villi and microvilli, which increase the surface area for absorption.

Topic: Biology, Digestion and Absorption, NEET
What is the function of the oesophagus?

Options:
A To transport food to the stomach
B To transport air to the lungs
C To transport waste to the colon
D To transport blood to the heart

The correct answer is:
To transport food to the stomach

Solution:
The oesophagus is a thin, long tube which extends posteriorly passing through the neck, thorax and diaphragm and leads to a ‘J’ shaped bag like structure called stomach. The oesophagus's main function is to transport food to the stomach.

Topic: Biology, Digestion and Absorption, NEET
What is the function of the scrotum?

Options:
A To store sperms
B To provide nutrition to germ cells
C To maintain the low temperature necessary for spermatogenesis
D To facilitate insemination

The correct answer is:
To maintain the low temperature necessary for spermatogenesis

Solution:
The scrotum helps in maintaining the low temperature of the testes necessary for spermatogenesis.

Topic: Biology, Human Reproduction, NEET