datavorous/entrance-exam-dataset huggingface dataset:
Compare the ionization enthalpies of the first series of the transition metals with those of the second and third series metals

Options:
A The first ionization enthalpies of the third transition series are higher than those of the first and second transition series.
B The ionization enthalpies of all three series of transition metals are identical.
C The ionization enthalpies of the second series of transition metals are generally lower than those of the first and third series metals.
D The ionization enthalpies of the third series of transition metals are generally lower than those of the first and second series metals.

The correct answer is:
The first ionization enthalpies of the third transition series are higher than those of the first and second transition series.

Solution:
Correct Option is : (A)
The first ionization enthalpies of the third transition series are higher than those of the first and second transition series.

Topic: Chemistry, d and f Block Elements, NEET
Compare the magnetic properties of O2+, O2, and O2–

Options:
A O2+is diamagnetic, O2is paramagnetic, and O2–is diamagnetic.
B O2+is paramagnetic, O2is paramagnetic, and O2–is paramagnetic.
C O2+is paramagnetic, O2is diamagnetic, and O2–is diamagnetic.
D O2+is diamagnetic, O2is diamagnetic, and O2–is paramagnetic.

The correct answer is:
O2+is paramagnetic, O2is paramagnetic, and O2–is paramagnetic.

Solution:
Correct Option is : (B)
O2+is paramagnetic, O2is paramagnetic, and O2–is paramagnetic.

Topic: Chemistry, Chemical Bonding and Molecular Structure, NEET
Compare the oxidation state of actinoids with that of the lanthanoids

Options:
A Lanthanoids exhibit a wider range of oxidation states compared to actinoids.
B Actinoids and lanthanoids exhibit similar ranges of oxidation states.
C Both actinoids and lanthanoids are primarily monovalent in their oxidation states.
D Lanthanoids show only +2,+3,+4 oxidation states due to large energy gap between 4f and 5d subshells but actinoids show a large number of oxidation states due to small energy gap between 5f and 6d subshell.

The correct answer is:
Lanthanoids show only +2,+3,+4 oxidation states due to large energy gap between 4f and 5d subshells but actinoids show a large number of oxidation states due to small energy gap between 5f and 6d subshell.

Solution:
Correct Option is : (D)
Lanthanoids show only +2,+3,+4 oxidation states due to large energy gap between 4f and 5d subshells but actinoids show a large number of oxidation states due to small energy gap between 5f and 6d subshell.

Topic: Chemistry, d and f Block Elements, NEET
Compare the oxidation states of the first series of the transition metals with those of the second and third series metals

Options:
A The first series of transition metals generally exhibit higher oxidation states than the second and third series metals.
B The oxidation states of all three series of transition metals are identical.
C +2 and +3 oxidation states are more common for elements in the first transition series, while higher oxidation states are more common for the heavier elements
D The third series of transition metals generally exhibit lower oxidation states than the first and second series metals.

The correct answer is:
+2 and +3 oxidation states are more common for elements in the first transition series, while higher oxidation states are more common for the heavier elements

Solution:
Correct Option is : (C)
+2 and +3 oxidation states are more common for elements in the first transition series, while higher oxidation states are more common for the heavier elements

Topic: Chemistry, d and f Block Elements, NEET
Compare the relative stability of the following species: O2+,O2,O2–

Options:
A O2+is the most stable, followed by O2, and O2–is the least stable.
B O2is the most stable, followed by O2–, and O2+is the least stable.
C O2–is the most stable, followed by O2, and O2+is the least stable.
D The relative stability of these species cannot be determined without additional information.

The correct answer is:
O2+is the most stable, followed by O2, and O2–is the least stable.

Solution:
Correct Option is : (A)
O2+is the most stable, followed by O2, and O2–is the least stable.

Topic: Chemistry, Chemical Bonding and Molecular Structure, NEET
Compare the solubility and thermal stability of carbonates of alkali metals and alkaline earth metals.

Options:
A Alkali metal carbonates are generally more soluble and thermally stable compared to alkaline earth metal carbonates.
B Alkaline earth metal carbonates are generally more soluble and thermally stable compared to alkali metal carbonates.
C Both alkali metal and alkaline earth metal carbonates have similar solubility and thermal stability properties.
D Alkali metal carbonates are generally more soluble but less thermally stable compared to alkaline earth metal carbonates.

The correct answer is:
Alkaline earth metal carbonates are generally more soluble and thermally stable compared to alkali metal carbonates.

Solution:
Correct Option is : (B)
Alkaline earth metal carbonates are generally more soluble and thermally stable compared to alkali metal carbonates.

Topic: Chemistry, s Block Elements, NEET
Compare the solubility and thermal stability of nitrates of alkali metals and alkaline earth metals.

Options:
A Alkali metal nitrates are generally more soluble and thermally stable compared to alkaline earth metal nitrates.
B Alkaline earth metal nitrates are generally more soluble and thermally stable compared to alkali metal nitrates.
C Both alkali metal and alkaline earth metal nitrates have similar solubility and thermal stability properties.
D Alkali metal nitrates are generally more soluble but less thermally stable compared to alkaline earth metal nitrates.

The correct answer is:
Alkali metal nitrates are generally more soluble and thermally stable compared to alkaline earth metal nitrates.

Solution:
Correct Option is : (A)
Alkali metal nitrates are generally more soluble and thermally stable compared to alkaline earth metal nitrates.

Topic: Chemistry, s Block Elements, NEET
Compare the solubility and thermal stability of sulphates of alkali metals and alkaline earth metals.

Options:
A Alkali metal sulphates are generally more soluble and thermally stable compared to alkaline earth metal sulphates.
B Alkaline earth metal sulphates are generally more soluble and thermally stable compared to alkali metal sulphates.
C Both alkali metal and alkaline earth metal sulphates have similar solubility and thermal stability properties.
D Alkali metal sulphates are generally more soluble but less thermally stable compared to alkaline earth metal sulphates.

The correct answer is:
Alkaline earth metal sulphates are generally more soluble and thermally stable compared to alkali metal sulphates.

Solution:
Correct Option is : (B)
Alkaline earth metal sulphates are generally more soluble and thermally stable compared to alkali metal sulphates.

Topic: Chemistry, s Block Elements, NEET
Compare the statements A and B.
Statements A: RNA produced during transcription in eukaryotic cells cannot be straight away used in photosynthesis.
Statement B: RNA splicing phenomena help in the removal of exons.

Choose the correct description.

Options:
A Both the statements A and B are wrong
B Both the statements A and B are correct
C Statement A is correct and B is wrong
D Statement A is correct and B is correct

The correct answer is:
Both the statements A and B are wrong

Solution:
In eukaryotic cells, RNA is produced by transcription and processed before getting transported to the cytoplasm where they are used as a template for protein synthesis. RNAs do not play a role in photosynthesis.
Eukaryotic mRNA requires processing to become active since in eukaryotes the genes have interrupted coding sequences called introns. It occurs in the nucleus of eukaryotic cells and involves removal of the non-coding stretches (introns) and splicing together of the discontinuous coding sequences (exons).

Topic: Biology, Molecular Basis of Inheritance, NEET
Compared to a bull a bullock is docile because of:

Options:
A higher levels of cortisone
B lower levels of blood testosterone
C lower levels of adrenaline/ noradrenaline in its blood
D higher levels of thyroxine.

The correct answer is:
lower levels of blood testosterone

Solution:
Testis is degenerated in bullock because of which the testosterone level in blood is reduced. This hormone promotes the growth of many body tissues such as muscles. However, in bull, it is active, thereby adding greater musculature; bulls are not docile like bullocks.

Topic: Biology, Chemical Coordination and Integration, NEET, NEET 2007
Compared to alcohols, how does water's acidity (ability to donate a proton) compare?

Options:
A Water is a weaker acid than alcohol.
B Water is a stronger acid than alcohol.
C Water has the same acidity as alcohol.
D Water's acidity depends on the specific alcohol.

The correct answer is:
Water is a stronger acid than alcohol.

Solution:
Water is a stronger acid than alcohols, as demonstrated by its ability to donate protons.

Topic: Chemistry, Alcohols Phenols and Ethers, NEET
Compared to blood our lymph has

Options:
A no plasma
B plasma without proteins
C more WBCs and no RBCs
D more RBCs and less WBCs

The correct answer is:
more WBCs and no RBCs

Solution:
Lymph can be defined as blood minus RBCs. Lymph is a clear, colourless fluid, similar to plasma but with less protein. It is a mobile connective tissue like, blood and is fomed by the filtration of blood. Microscopic examination of lymph depicts that it contains a large number of leucocytes (mostly lymphocytes), ranging from 500 to 75,000 per cubic mm. No blood platelets present.

Topic: Biology, Body Fluids and Circulation, NEET, NEET 2009 (Screening)
Compared to those of humans, the erythrocytes in frog are

Options:
A without nucleus but with haemoglobin
B nucleated and with haemoglobin
C very much smaller and fewer
D nucleated and without haemoglobin

The correct answer is:
nucleated and without haemoglobin

Solution:
RBCs or erythrocytes of frog are oval, disc like biconvex, have centrally placed nucleus and with haemoglobin. Usually in mammals (including human), RBCs are circular and non-nucleated except those of family Camilladae (camels, llamas, etc), which have nucleated RBCs.

Topic: Biology, Structural Organisation in Animals, NEET, NEET 2012 (Screening)
Compared with the gametophytes of the bryophytes, the gametophytes of vascular plants tends to be

Options:
A larger but to have smaller sex organs
B larger and to have large sex organs
C smaller and to have smaller sex organs
D smaller but to have larger sex organs

The correct answer is:
smaller and to have smaller sex organs

Solution:
As we proceed from thallophyta to angiosperms, there is gradual reduction in gametophyte with reduced size of sex organs. From thallophyta to angiosperms, there is progressive elaboration of sporophytes.

Topic: Biology, Plant Kingdom, NEET, NEET 2011 (Screening)
Compensation point means

Options:
A No photosynthesis.
B Beginning of photosynthesis.
C Equal rate of photosynthesis and respiration.
D Excess of respiration to compensate O2 production.

The correct answer is:
Equal rate of photosynthesis and respiration.

Solution:
When the rate of photosynthesis i.e. process of converting solar energy into chemical energy is same as that of respiration i.e. utilization of the stored energy it is referred to as compensation point.

Topic: Biology, Photosynthesis in Higher Plants, NEET
Competent cells have the ability to :

Options:
A Take up dna through transduction
B Take up dna through conjugation
C Take up dna from the surroundings through cell wall
D Cleave foreign dna.

The correct answer is:
Take up dna from the surroundings through cell wall

Solution:
Competent cell refers to the capability of the cell wall of bacteria to uptake hydrophilic DNA fragments when treated with divalent ions through the cell membrane.

Topic: Biology, Biotechnology - Principles and Processes, NEET
Competition for food, light and space is most severe between two

Options:
A Distantly related species growing in different habitat
B Distantly related species growing in the same habitat
C Closely related species growing in different habitat
D Closely related species growing in the same area

The correct answer is:
Closely related species growing in the same area

Solution:
Closely related species have the same desire of food, light and space and in the same area these all requirements are found in a limited amount or quota. Hence competition for food, light and space is most severe between two closely related species growing in the same area.

Topic: Biology, Organisms and Populations, NEET
Competition is a rivalry between two or more organisms for obtaining the same resources. It is a type of

Options:
A positive interaction
B negative interaction
C neither positive nor negative interaction
D parasitic relationship

The correct answer is:
negative interaction

Solution:
Competition is an interaction between organisms or species in which both the organisms or species are harmed. Limited supply of at least one resource (such as food, water, and territory) used by both can be a factor.

Topic: Biology, Organisms and Populations, NEET
Competition is most fierce between

Options:
A unrelated species in the same environment.
B two or more closely related species in the same environment.
C two or more closely related species in a different environment.
D none of the above

The correct answer is:
two or more closely related species in the same environment.

Solution:
Competition is most fierce between two or more closely related species in the same environment as they depend on the same resource. If resources are limited then competition cannot occur for long and eventually inferior one gets eliminated.

Topic: Biology, Organisms and Populations, NEET
'Competitive release' refers to

Options:
A Inability of two species to co-exist indefinitely and eventual elimination of the competitively inferior species
B Avoidance of competition between species competing for same resource by figuring a compromise
C Expansion of distribution of a species restricted to a small area due to a competitively superior species being experimentally eliminated
D Evolutionary success in devising a mechanism to counter and neutralize competition

The correct answer is:
Expansion of distribution of a species restricted to a small area due to a competitively superior species being experimentally eliminated

Solution:
Sometimes a species is restricted to smaller area due to another species which is superior. If the superior species is removed, the competition of the inferior species decreases and they increases in number and covers a wider area. This is called competitive release.

Topic: Biology, Organisms and Populations, NEET
Complete hydrolysis of cellulose gives –

Options:
A D-ribose
B D-glucose
C L-glucose
D D-fructose

The correct answer is:
D-glucose

Solution:
Cellulose is a linear polymer of Î²âDâ glucose in which C 1 of one glucose unit is connected to C 4 of the other through Î²âDâ glucosidic linkage. It does not undergo hydrolysis easily. However on heating with dilute H 2 S O 4 under pressure. It does undergo hydrolysis to give only D- glucose.
( C 6 H 10 O 5 ) n + nH 2 O → H + nC 6 H 12 O 6 D−Glucose

Topic: Chemistry, Polymers, NEET
Complete lactation could help as a natural method of contraception.

Options:
A True
B False
C Maybe
D Cannot be defined.

The correct answer is:
False

Solution:
Lactation amenorrhea or complete Lactation can help as a natural method of contraception. But it is limited until the completion of the Lactation period only, which is until six month after Parturition.

Topic: Biology, Reproductive Health, NEET
Complete the analogy:

Ectoderm: Somatotropin : : Endoderm:

Options:
A Estrogen
B Thyroxine
C Epinephrine
D Cortisol

The correct answer is:
Thyroxine

Solution:
Somatotropin also called as growth hormone or protein hormones which are secreted in the anterior pituitary glands. The endocrine glands that arise from ectoderm produce protein hormones. Hence, Somatotropin is derived from ectoderm and thyroxine from endoderm. Epinephrine, cortisol and estrogen all are derived from the ectoderm.

Topic: Biology, Chemical Coordination and Integration, NEET
Complete the analogy

Humans: DNA:: Viroids:: ?

Options:
A DNA
B RNA
C DNA or RNA
D Proteins

The correct answer is:
RNA

Solution:
DNA is the genetic material in humans. T.O. Diener discovered a new infectious agent called viroids. It was smaller than viruses and caused potato spindle tuber disease. It has free low molecular weight RNA but does not have a protein coat. Thus, the genetic material in viroids is RNA.

Topic: Biology, Biological Classification, NEET
Complete the equation.

Nucleic acids â Nucleases Nucleotides ââ¦â¦â¦.

Options:
A Monoglycerides
B Diglycerides
C Disaccharides
D Nucleosides

The correct answer is:
Nucleosides

Solution:
Nucleases in the pancreatic juice act on nucleic acids to form nucleotides and further nucleosides.

Topic: Biology, Digestion and Absorption, NEET
Complete the flow chart on central dogma.

Options:
A (a)-Replication; (b)-Transcription;
(c)-Transduction; (d)-Protein
B (a)-Translation; (b)-Replication;
(c)-Transcription; (d)-Transduction
C (a)-Replication; (b)-Transcription;
(c)-Translation; (d)-Protein
D (a)-Transduction; (b)-Translation;
(c)-Replication; (d)-Protein

The correct answer is:
(a)-Replication; (b)-Transcription;
(c)-Translation; (d)-Protein

Solution:
Francis Crick proposed the Central dogma in molecular biology, which states that genetic information flows from DNA to RNA and to Protein.

Topic: Biology, Molecular Basis of Inheritance, NEET, NEET 2021
Complete the following acid-base reaction and name the product: (C2H5)3N + HCl →

Options:
A (C2H5)3NH2
B (C2H5)3(NH)+Cl-
C (C2H5)3Cl
D (C2H5)3NH3-Cl+

The correct answer is:
(C2H5)3(NH)+Cl-

Solution:
Correct Option is : (B)
(C2H5)3(NH)+Cl-

Topic: Chemistry, Amines, NEET
Complete the following acid-base reaction and name the product: CH3CH2CH2NH2+ HCl →

Options:
A CH3CH2CH2NH3+Cl-
B CH3CH2CH2Cl
C CH3CH2CH2NH3-Cl+
D CH3CH2CH3

The correct answer is:
CH3CH2CH2NH3+Cl-

Solution:
Correct Option is : (A)
CH3CH2CH2NH3+Cl-

Topic: Chemistry, Amines, NEET
Complete the following equations: (i) PbS (s) + H2O2(aq) → ?

Options:
A PbSO4(s) + H2O (l)
B PbSO3(s) + H2O (l)
C PbSO4(s) + H2O2(aq)
D PbSO3(s) + H2O2(aq)

The correct answer is:
PbSO4(s) + H2O (l)

Solution:
Correct Option is : (A)
PbSO4(s) + H2O (l)

Topic: Chemistry, Hydrogen, NEET
Complete the following paragraph by selecting the correct option for the blanks A, B, and C.

The thymus gland is located between the lungs behind the sternum on the .........A........ side of the aorta. .............B.......... secreted by the gland plays a major role in the differentiation of T-lymphocytes which provide ........C............ They also promote antibody production which provides.......D.........

Options:
A A: dorsal, B: Thymic humoral factor, C: humoral immunity, D: cell-mediated immunity
B A: ventral, B: Thymopoietin, C: humoral immunity, D: cell-mediated immunity
C A: ventral, B: Thymosin, C: cell-mediated immunity, D: humoral immunity
D A: dorsal, B: Thymic humoral factor, C: cell-mediated immunity, D: humoral immunity

The correct answer is:
A: ventral, B: Thymosin, C: cell-mediated immunity, D: humoral immunity

Solution:
The thymus gland is located between the lungs behind the sternum on the ventral side of the aorta. Thymosins secreted by the gland play a major role in the differentiation of T-lymphocytes which provide cell-mediated immunity. They also promote antibody production which provides humoral immunity.

Topic: Biology, Chemical Coordination and Integration, NEET
Complete the following paragraph by selecting the correct options for the blanks A, B, and C from the options given below.

Cells of the human body exhibit three types of movements namely amoeboid, ciliary, and muscular. Macrophages and leucocytes present in blood exhibit .........A..........movement. ..........B............movement is seen in our internal tubular organs. Movements of our limbs, jaws, etc. require ............C...........movement.

Options:
A A: amoeboid, B: muscular, C: ciliary
B A: muscular, B: ciliary, C: amoeboid
C A: amoeboid, B: ciliary, C: muscular
D A: ciliary, B: amoeboid, C: muscular

The correct answer is:
A: amoeboid, B: ciliary, C: muscular

Solution:
Macrophages and leucocytes present in blood exhibit amoeboid movement, with the help of pseudopodia formed by the streaming of protoplasm.
The internal tubular organs, lined by ciliated epithelium show ciliary movement, e.g., the passage of ova through the female reproductive tract. The movement of limbs, jaws, etc. require muscular movement brought about by contractile property of muscles.

Topic: Biology, Locomotion and Movement, NEET
Complete the following paragraph by selecting the correct options for the blanks A, B, and C from the options given below:

The most infectious human ailment of .......I........is caused by a group of viruses known as rhinoviruses. They infect the nose and the respiratory tract, but not the .......II..........The droplets from an infected person are either .......III...... directly, or spread via contaminated objects.

Options:
A I: common cold, II: lungs, C: absorbed
B I: common cold, II: lungs, C: inhaled
C I: pneumonia, II: lungs, C: inhaled
D I: pneumonia, II: lungs, C: absorbed

The correct answer is:
I: common cold, II: lungs, C: inhaled

Solution:
Rhinoviruses are a group of viruses responsible for causing the most common infectious ailment in humans i.e. common cold. They infect the nose and the respiratory tract, but not the lungs. The droplets from an infected person are either inhaled directly or spread via contaminated objects like tables, pens, etc.

Topic: Biology, Human Health and Diseases, NEET
Complete the following reaction-

Options:
A p-Hydroxy azobenzene
B Azobenzene
C p-Hydroxy Phenol
D m-Hydroxy azobenzene

The correct answer is:
p-Hydroxy azobenzene

Solution:
Correct Option is : (A)
p-Hydroxy azobenzene

Topic: Chemistry, Amines, NEET
Complete the following reaction :

Options:
A
B
C
D

The correct answer is:

Solution:
Cyclohexanone undergo nucleophilic addition reaction with hydrogen cyanide to give cyclohexanone cyanohydrin.

The cyclohexanone cyanohydrin reacts with Con.H2SO4 followed by heating gives cyclohexene carboxylic acid.

Topic: Chemistry, Aldehydes and Ketones, NEET, NEET 2023 (All India)
Complete the following reaction and balance it: C3H8(g) + 3H2O(g) →

Options:
A C3H8(g) + 3H2O(g) → 3CO(g) + 7H2(g)
B 2C3H8(g) + 4H2O(g) → 6CO(g) + 5H2(g)
C C3H8(g) + H2O(g) → 3CO2(g) + 8H2(g)
D 2C3H8(g) + 3H2O(g) → 2CO(g) + H2(g)

The correct answer is:
C3H8(g) + 3H2O(g) → 3CO(g) + 7H2(g)

Solution:
Correct Option is : (A)
C3H8(g) + 3H2O(g) → 3CO(g) + 7H2(g)

Topic: Chemistry, Hydrogen, NEET
Complete the following reaction and balance it: CO(g) + H2(g) →

Options:
A CO(g) + 2H2(g) → CH3OH(l)+H2(g)
B 3CO(g) + 5H2(g) → 4CH3OH(l)
C CO(g) + 2H2(g) → CH3OH(l)
D 2CO(g) + H2(g) → CH3OH(l)

The correct answer is:
CO(g) + 2H2(g) → CH3OH(l)

Solution:
Correct Option is : (C)
CO(g) + 2H2(g) → CH3OH(l)

Topic: Chemistry, Hydrogen, NEET
Complete the following reaction and balance it: H2(g) + MmOo(s) →

Options:
A mH2(g) + MmOo(s) → oM(s) + H2O(l)
B oH2(g) + MmOo(s) → oMO(s) + oH2O(l)
C oH2(g) + MmOo(s) → mM2O(s) + mH2(g)
D oH2(g) + MmOo(s) → mM(s) + oH2O(l)

The correct answer is:
oH2(g) + MmOo(s) → mM(s) + oH2O(l)

Solution:
Correct Option is : (D)
oH2(g) + MmOo(s) → mM(s) + oH2O(l)

Topic: Chemistry, Hydrogen, NEET
Complete the following reaction and balance it: Zn(s) + NaOH(aq) →

Options:
A Zn(s) + NaOH(aq) →Na2ZnO(aq) + 2H2(g)
B Zn(s) + NaOH(aq) →NaZn(aq) + H2O(g)
C 2Zn(s) + 3NaOH(aq) →3Na2ZnO2(aq) + H2(g)
D Zn(s) + NaOH(aq) →Na2ZnO2(aq) + H2(g)

The correct answer is:
Zn(s) + NaOH(aq) →Na2ZnO2(aq) + H2(g)

Solution:
Correct Option is : (D)
Zn(s) + NaOH(aq) →Na2ZnO2(aq) + H2(g)

Topic: Chemistry, Hydrogen, NEET