datavorous/entrance-exam-dataset huggingface dataset:
Which of the following statement is not correct regarding circulation of cockroaches?

Options:
A Blood vascular system is open type.
B Blood vessels are poorly developed.
C Blood vessels open into haemocoel.
D Visceral organs do not bath in haemolymph.

The correct answer is:
Visceral organs do not bath in haemolymph.

Solution:
Circulatory system in cockroach: It is open type. Blood vessels are poorly developed and the open into haemocoel or open spaces. Body fluid present in haemocoel is also known as haemolymph. Blood is colourless as there is no respiratory pigment. Blood does not perform the function of transporting gases. Circulatory system consists of heart, aorta, haemocoel and haemolymph. The visceral organs bath in the fluid equivalent to blood in most invertebrates called hemolymph.

Topic: Biology, Structural Organisation in Animals, NEET
Which of the following statement is not correct?

Options:
A Ecosystem is an open system
B Ecosystem is self-sustaining and dynamic structure
C Sun is the ultimate source of energy for any ecosystem
D In an artificial ecosystem, flow of energy is not unidirectional

The correct answer is:
In an artificial ecosystem, flow of energy is not unidirectional

Solution:
The pyramid of energy is always upright because the flow of energy is unidirectional from producer to consumer level. The energy content is maximum in producers. The energy decreases at each trophic level of the food chain, as part of the energy is lost as heat and the major part of the energy is liberated during respiration for use in various activities.

Topic: Biology, Ecosystem, NEET
Which of the following statement is not in relation to more selection of pesticide-resistant microbes?

Options:
A It is a stochastic process
B It is accelerated by anthropogenic action
C It has occurred in very less time
D It is a directed process in the sense of determinism

The correct answer is:
It is a directed process in the sense of determinism

Solution:
Evolution is not a directed process in the sense of determinism. It is a stochastic process that is based on chance events in nature and mutation in the organisms.

Topic: Biology, Evolution, NEET
Which of the following statement is not true?

Options:
A Food chains are generally short with few trophic levels as only 10% of the energy is transferred to higher trophic level from lower one.
B The pyramid of biomass in the sea is generally inverted as the biomass of fish far exceeds that of phytoplankton.
C Pyramid of energy is mostly upright but sometimes it may be inverted
D Pyramids of number and biomass may be either upright or inverted

The correct answer is:
Pyramid of energy is mostly upright but sometimes it may be inverted

Solution:
Pyramid of energy is always upright because at every successive trophic level only 10% energy is transferred. Due to this reason number of trophic levels in any food chain is usually 3 â 4 . Pyramid of biomass is always upright, except - In sea ecosystem, pyramid is inverted because biomass of fishes is comparatively more than producers (phytoplanktons). Pyramid of number is always upright, except - tree ecosystem where large tree is single but surviving organisms on it are comparatively more.

Topic: Biology, Ecosystem, NEET
Which of the following statement is not true?

Options:
A Pressure is a vector quality
B Relative density is a scalar quantity
C Coefficient of viscosity is a scalar quantity
D Surface tension is a scalar quantity

The correct answer is:
Pressure is a vector quality

Solution:
Pressure is scalar quantity So, option (1) is the correct answer

Topic: Physics, Mathematics in Physics, NEET, NEET 2023 (Manipur)
Which of the following statement is NOT true about acid rain?

Options:
A It is due to reaction of SO2, NO2 and CO2 with rain water
B Causes no damage to monuments like Taj Mahal.
C It is harmful for plants.
D Its pH is less than 5.6

The correct answer is:
Causes no damage to monuments like Taj Mahal.

Solution:
Acid rain is caused by a chemical reaction that begins when compounds like sulphur dioxide and nitrogen oxides are released into the air. Acid rain causes damaging to monuments like Taj Mahal.

Topic: Chemistry, Environmental Chemistry, NEET, NEET 2020 (Phase 2)
Which of the following statement is not true about glucose?

Options:
A It is an aldohexose.
B It contains five hydroxyl groups.
C It is a reducing sugar.
D It is an aldopentose.

The correct answer is:
It is an aldopentose.

Solution:

Topic: Chemistry, Biomolecules, NEET, NEET 2020 (Phase 2)
Which of the following statement is not true for chylomicrons?

Options:
A Chylomicrons are formed inside the lumen of small intestine.
B Chylomicrons are protein coated fat droplets
C Chylomicron contains triglycerides, cholesterol and phospholipids
D Chylomicron released from epithelial cells of small intestine into lacteals.

The correct answer is:
Chylomicrons are formed inside the lumen of small intestine.

Solution:
Due to the action of pancreatic lipase or steapsin and intestinal lipase, the emulsified fats are broken into fatty acids, glycerol and monoglycerides in lumen of the small intestine. These compounds, along with water and bile salts, incorporate to form small vesicles called micelles in the lumen of small intestine. These micelles are released into intestinal epithelial cells, where they again join to form small fat droplets or triglycerides covered by a protein layer and called as chylomicrons. These are ultimately released from epithelial cells to lacteals/lymphatic vessels.

Topic: Biology, Digestion and Absorption, NEET
Which of the following statement is not true for cocaine?

Options:
A It is commonly called coke or crack and is usually snorted.
B It is obtained from coca plant Erythroxylum coca.
C It has potent suppressing action on central nervous system.
D It interferes with the transport of dopamine neurotransmitter.

The correct answer is:
It has potent suppressing action on central nervous system.

Solution:
Cocaine belongs to CNS stimulant drugs; it has potent stimulating action on central nervous system which produces a sense of euphoria and increased energy. It interferes with the transport of dopamine neurotransmitter.

Topic: Biology, Human Health and Diseases, NEET
Which of the following statement is not true for the long form of the periodic table?

Options:
A It reflects the sequence of filling the electrons in the order of sub-energy levels s, p, d and f
B It helps to predict the stable oxidation states of the elements
C It reflects trends in physical and chemical properties of the elements
D It helps to predict the relative ionicity of the bonds between any two elements

The correct answer is:
It helps to predict the stable oxidation states of the elements

Solution:
It reflects the sequence of filling the electrons in the sub shells. It reflects trends in physical and chemical properties of the elements.

Topic: Chemistry, Classification of Elements and Periodicity in Properties, NEET
Which of the following statement is not true regarding ribs in humans?

Options:
A Rib is a flat bone connected dorsally to vertebral column
B Ribs are ventrally connected to sternum through hyaline cartilage
C Vertebro- chondral ribs directly articulate with sternum with the help of hyaline cartilage.
D In humans ribs are bicephalic

The correct answer is:
Vertebro- chondral ribs directly articulate with sternum with the help of hyaline cartilage.

Solution:
Ribs are a type of a thin flat bone. Ribs are also termed as bicephalic because it has two articulation surfaces on its dorsal end (towards vertebra). Ribs are of 3 types:
I. True ribs (First 7 pairs): Dorsally attached to the thoracic vertebrae and ventrally connected to the sternum with thehelp of hyaline cartilage.
II. Vertebrochondral or False ribs (8th , 9th and 10th pairs): These ribs do not articulate directly with the sternum but join the 7th rib with the help of hyaline cartilage.
III. Floating ribs (11th and 12th pairs): These ribs are not connected ventrally.

Topic: Biology, Locomotion and Movement, NEET
Which of the following statement is relation to the hydrogen atom is correct?

Options:
A 3s, 3p and 3d-orbitals all have the same energy
B 3s and 3p-orbitals is lower energy than 3d-orbital
C 3p-orbital is lower in energy than 3d-orbital
D 3s-orbital is lower in energy than 3p-orbital

The correct answer is:
3s, 3p and 3d-orbitals all have the same energy

Solution:
Hydrogen atom is in 1s1 and these 3s, 3p and 3d-orbitals will have same energy with respect to 1s-orbital.

Topic: Chemistry, Structure of Atom, NEET
Which of the following statement is true?

Options:
A A is formed by anti-addition and is meso
B A is formed by syn addition and is meso
C A is formed by anti-addition and is racemic
D A is formed by syn addition and is racemic

The correct answer is:
A is formed by anti-addition and is meso

Solution:
Anti addition of Br2 to trans-2-butene gives meso compound.

Topic: Chemistry, Hydrocarbons, NEET
Which of the following statement is true?

Options:
A Piezo-electricity is due to net dipole moment
B Ferro-electricity is due to alignment of dipoles in same direction
C Pyro-electricity is due to heating polar crystals
D All of the above

The correct answer is:
All of the above

Solution:
All these are characteristics facts related to these terms
Piezo-electricity is due to net dipole moment
Ferro-electricity is due to alignment of dipoles in same direction
Pyro-electricity is due to heating polar crystals

Topic: Chemistry, Solid State, NEET
Which of the following statement is true?

Options:
A Silicon exhibits 4 coordination numbers in its compound
B Bond energy of $\mathrm{F}_2$ is less than $\mathrm{Cl}_2$
C $\mathrm{Mn}$ (III) oxidation state is more stable than $\mathrm{Mn}(\mathrm{II})$ in an aqueous state
D Elements of 15 th group show only +3 and +5 oxidation states

The correct answer is:
Bond energy of $\mathrm{F}_2$ is less than $\mathrm{Cl}_2$

Solution:
Fluorine is an exception due to its extremely small size. The F-F bond length is so short that the lone pairs of electrons on the fluorine atoms repel each other and weakens the F-F bond.
The order of Bond energy is, $\mathrm{Cl}_2>$ $\mathrm{Br}_2>\mathrm{F}_2>\mathrm{I}_2$

Topic: Chemistry, Classification of Elements and Periodicity in Properties, NEET, NEET 2002
Which of the following statement is true?

Options:
A Vessels are multicellular and with wide lumen.
B Tracheids are multicellular and with narrow lumen.
C Vessels are unicellular and with narrow lumen.
D Tracheids are unicellular and with wide lumen.

The correct answer is:
Vessels are multicellular and with wide lumen.

Solution:
Vessels are multicellular with wide lumen. They are made up of vessel elements lying one above the other. The wall of vessels is hard but not thick having wide lumen. Whereas tracheids are unicellular with narrow lumen.

Topic: Biology, Anatomy of Flowering Plants, NEET, NEET 2002
Which of the following statement is true about cockroach?

Options:
A There are three ganglia in thorax and nine in abdomen
B Each eye consists of about 6000 hexagonal ommatidia
C Fat body, nephrocytes and uricose glands help in excretion
D Respiratory system consists of network of trachea that open through 8 pairs of spiracles

The correct answer is:
Fat body, nephrocytes and uricose glands help in excretion

Solution:
Cockroaches consist of nine ganglia. Out of these three are present in the thorax and six are in the abdomen. Cockroaches consist of compound eyes and these contain small units known as ommatidia. which is around 2000 in number. Respiratory system consists of ten pairs of spiracles. Excretion is done with the help of Fat bodies, nephrocytes and uricose glands.

Topic: Biology, Structural Organisation in Animals, NEET
Which of the following statement is true for â 6 14 C, â 7 15 Nâand â 8 16 O

Options:
A They have equal number of protons
B They have equal number of electrons
C They have equal number of neutrons
D They have equal mass number

The correct answer is:
They have equal number of neutrons

Solution:
The statement is true 614C, 715N and 816O . They have equal number of neutrons

Topic: Physics, Nuclear Physics, NEET
Which of the following statement is true for colour blindness?

Options:
A It is due to a mutation in certain genes present on 21st pair of the chromosome.
B It occurs more in female as compared to male.
C The son of the carrier woman has 50% chances of being colour blind.
D It is an autosomal linked genetic disorder.

The correct answer is:
The son of the carrier woman has 50% chances of being colour blind.

Solution:
Colour blindness is X linked recessive genetic disorder, in which due to recessive allele present on X chromosome pigments are not synthesized by cones cells of eye thus the person is unable to distinguish between the primary colour red and green. It occurs more in males than in females and a carrier female can transfer the defective allele to 50% of its son.

Topic: Biology, Principles of Inheritance and Variation, NEET
Which of the following statement is true for lymph?

Options:
A All components of blood except WBCs and serum
B All components of blood except RBCs and some proteins
C RBCs, WBCs and plasma
D RBCs proteins and platelets

The correct answer is:
All components of blood except RBCs and some proteins

Solution:
Lymph is a colorless vascular connective tissue derived from tissue fluid. RBCs and platelets are absent. Only leukocytes and floating amoeboid lymphocytes are present.

Topic: Biology, Body Fluids and Circulation, NEET
Which of the following statement is true with respect to inert-pair effect?

Options:
A Sn2+ is oxidising agent while Pb4+ is reducing agent
B Sn2+ and Pb4+ are both oxidising agent and reducing agent
C Sn2+ is reducing agent while Pb2+ is oxidising agent
D Sn2+ is reducing agent while Pb4+ is oxidising agent

The correct answer is:
Sn2+ is reducing agent while Pb4+ is oxidising agent

Solution:
Due to inert-pair effect,stability of +2 oxidation state increases down the group in carbon family.
Sn 2+ âunstable[good reducing agent] Pb 4+ âunstable[good oxdising agent]

Topic: Chemistry, Classification of Elements and Periodicity in Properties, NEET
Which of the following statement is true?

Options:
A The positive hydrostatic pressure is called turgor pressure.
B Diffusion pressure deficit equals osmotic pressure of a solution plus wall pressure.
C Diffusion is more rapid in liquids than in gases.
D Diffusion of water through a semi-permeable membrane is called imbibition.

The correct answer is:
The positive hydrostatic pressure is called turgor pressure.

Solution:
Turgor pressure is exerted by the fluid inside the cell on the cell wall. It pushes the plasma membrane against the cell wall due to the osmotic flow of water through the permeable membrane. As it acts inside the cell to outside it is positive hydrostatic pressure, which is opposed by equal and opposite wall pressure (negative pressure). Diffusion is the movement of particles of gases, liquids, and solids from a region of higher free energy to a region of lower free energy. It is more rapid in gases, as compared to liquids as the density of gases is lower than that of liquids. Imbibition is the absorption of water by solid particles of an adsorbent substance without forming a solution.

Topic: Biology, Transport in Plants, NEET
Which of the following statement is wrong?

Options:
A Two sulphur atoms in the thiosulphate ions occupy equivalent positions
B Ice results from cooling of water whereas snow results from cooling of vapours to solid
C Formation of ice is solidification whereas formation of snow is Hoar frost
D Ice sublimes on moon

The correct answer is:
Two sulphur atoms in the thiosulphate ions occupy equivalent positions

Solution:
16 35 S+ SO 3 2− → [ 16 35 SSO 3 ] 2− →  2 H +   16 34 S+ H 2 O+ SO 2
The tagging technique confirms that two S atoms in S2O32- ions do not occupy equivalent positions.
Also, water→solidificationice
ice → sublimation vapour → Hoarfrost snow
ice→vapour
when ext. pressure is reduced on ice. Pext at moon = 0.

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET
Which of the following statement is wrong regarding a p - n junction diode

Options:
A Diode may illuminate light
B Diodes are rectifying devices
C Diodes are unidirectional devices
D Diodes have three terminals

The correct answer is:
Diodes have three terminals

Solution:
Diode is a two terminal device, anode & cathode are the two terminals.

Topic: Physics, Semiconductors, NEET
Which of the following statement is wrong regarding the rules of nomenclature?

Options:
A The first word denoting the genus starts with a capital letter.
B The specific epithet starts with a small letter.
C Biological names are printed in italics to indicate their Latin origin.
D In the biological name - Mangifera indica L., 'L' denotes the language 'Latin'.

The correct answer is:
In the biological name - Mangifera indica L., 'L' denotes the language 'Latin'.

Solution:
Rules for naming organism are specified according to specific set of rules. According to binomial nomenclature name of the genus starts with capital letter and name of the species starts with small letter. Scientific names are written in latin language and italics font is used to specific latin origin.

Topic: Biology, The Living World, NEET
Which of the following statement is/are correct with respect to remedy for plastic waste?

A. Polyblend is a fine mixture of recycled modified plastic.

B. It is a zero-waste procedure.

C. It was due to the collaboration of town people of Arcata and biologists of Humboldt State University.

D. A blend of polyblend and bitumen enhances bitumen’s water–repellent properties and helps to increase road life.

Options:
A (a) and (b)
B (a) and (c)
C (a) and (d)
D Only (a)

The correct answer is:
(a) and (d)

Solution:
In Bangalore, a plastic sac manufacturer (Ahmed Khan) found solution to accumulating plastic waste. They form Polyblend, which is a fine powder of modified plastic waste. This polyblend is used to lay roads along with bitumen and due to this water repellent property of bitumen is increased by about three times. Water repellent property of bitumen was proved by Ahmed Khan in collaboration with R. V. College of Engineering and Bangalore City Corporation.

Zero Waste is a set of principles focused on waste prevention that encourages the redesign of resource life cycles so that all products are reused. The goal is for no trash to be sent to landfills, incinerators, or the ocean. Currently, only 9% of plastic is actually recycled.

Town people of Arcata collaborated with the biologists of Humboldt State University and created an ‘Integrated wastewater treatment system’. This included-
1. The conventional method of sedimentation, filtering, and chlorine treatment.
2. The development of a series of 6- connected Marshes (over 60 hectares of marshland).

Topic: Biology, Environmental Issues, NEET
Which of the following statement is/are true -
(I) Borazine is aromatic
(II) There are four isotopic disubstituted borazine molecules B3N3H4X2
(III) Borazine is more reactive towards addition reactions than benzene
(IV) Banana bonds in B2H6 are longer but stronger than normal B-H bonds

Options:
A I,II and III
B I,II and IV
C I, II, III and IV
D Only II

The correct answer is:
I, II, III and IV

Solution:
Borazine is inorganic benzene

Topic: Chemistry, p Block Elements (Group 13 & 14), NEET
Which of the following statement regarding forebrain is correct?

Options:
A Forebrain consists of hypothalamus, thalamus and cerebellum.
B The layer of cells covering the cerebral hemispheres is referred to as white matter.
C The lobe involved in regulation of sexual behaviour and expression of emotional reaction is also a part of the forebrain.
D Association areas of the forebrain are sensory in function.

The correct answer is:
The lobe involved in regulation of sexual behaviour and expression of emotional reaction is also a part of the forebrain.

Solution:
The lobe involved in the regulation of sexual behaviour and expression of emotional reaction is the 'limbic lobe'. It is formed by the inner part of the cerebral hemispheres and structures like the amygdala, hippocampus, etc. Hence, it is a part of the forebrain.
The forebrain consists of the hypothalamus, thalamus, and cerebrum.
The layer of cells covering cerebral hemispheres is the cerebral cortex, also called grey matter.
Association areas of the forebrain are neither motor nor sensory in function.

Topic: Biology, Neural Control and Coordination, NEET
Which of the following statement related to Kreb's cycle is not correct?

Options:
A There is only one reaction in Kreb's cycle where FAD+ is reduced to FADH2
B During conversion of succinyl CoA to succinic acid, a molecule of GTP is synthesized.
C The cycle starts with reaction of acetyl CoA with pyruvic acid to form 6C citric acid.
D There are three reactions in the cycle where NAD+ is reduced to NADH+H+ .

The correct answer is:
The cycle starts with reaction of acetyl CoA with pyruvic acid to form 6C citric acid.

Solution:
Kreb's cycle also known as citric acid cycle in which first reactant oxalo acetic acid (4C) reacts with Acetyl CoA (2C) to form first stable compound citric acid which is 6 carbon compound. Total 4 dehydrogenation reaction occurs in Kreb's cycle in which NAD+ is hydrogen acceptor in 3 reaction and FAD+ is hydrogen acceptor in one reaction.

Topic: Biology, Respiration in Plants, NEET
Which of the following statements about adiabatic processes is correct?

Options:
A Adiabatic processes involve heat transfer without work done.
B Adiabatic processes are always isothermal.
C Adiabatic processes result in a change in internal energy without heat transfer.
D Adiabatic processes are in constant thermal equilibrium with the surroundings.

The correct answer is:
Adiabatic processes result in a change in internal energy without heat transfer.

Solution:
In adiabatic processes, there is no heat transfer between the system and surroundings, so any change in internal energy is solely due to work done.

Topic: Chemistry, Thermodynamics (C), NEET
Which of the following statements about adsorption from solution phase is correct?

Options:
A The extent of adsorption increases with a decrease in temperature.
B The extent of adsorption is independent of the concentration of the solute.
C The extent of adsorption is not affected by the nature of the adsorbent.
D The extent of adsorption depends on the concentration of the solute in solution.

The correct answer is:
The extent of adsorption depends on the concentration of the solute in solution.

Solution:
The paragraph mentions that the extent of adsorption from the solution phase depends on the concentration of the solute in the solution.

Topic: Chemistry, Surface Chemistry, NEET
Which of the following statements about anhydrous aluminium chloride is correct?

Options:
A it sublimes at 100 oC under vacuum
B it exists as AlCl3 molecules
C it is a strong Lewis base
D it is not easily hydrolysed

The correct answer is:
it sublimes at 100 oC under vacuum

Solution:
AlCl3 exists as a dimmer (Al2Cl6) . It is a strong Lewis acid as Al has an incomplete octet and has a tendency to gain electrons. AlCl3 undergoes hydrolysis easily and forms an acidic solution.
AlCl3+3H2O→Al(OH)3+3HCl
i.e., AlCl3 sublimes at 100oC under vaccum.

Topic: Chemistry, p Block Elements (Group 13 & 14), NEET