datavorous/entrance-exam-dataset huggingface dataset:
What is the nature of the proposed dual behavior of matter according to de Broglie?

Options:
A Matter exhibits only wavelike properties.
B Matter exhibits only particle-like properties.
C Matter exhibits both particle and wavelike properties.
D Matter does not exhibit any behavior.

The correct answer is:
Matter exhibits both particle and wavelike properties.

Solution:
de Broglie proposed that matter, like radiation, should exhibit dual behavior, meaning both particle and wavelike properties.

Topic: Chemistry, Structure of Atom, NEET
What is the nature of the relationship between the vapor pressure and the mole fraction of the solvent in a binary solution governed by Raoult's law?

Options:
A Exponential
B Linear
C Quadratic
D Inverse

The correct answer is:
Linear

Solution:
The paragraph states that the relationship between the vapor pressure and the mole fraction of the solvent in a binary solution governed by Raoult's law is linear.

Topic: Chemistry, Solutions, NEET
What is the nature of the resulting solution prepared from 100ml of 0.2MH2SO4 added to 100ml of 0.2MNaOH.

Options:
A Neutral
B Acidic
C Basic
D Slightly basic

The correct answer is:
Acidic

Solution:
M.eq. of 0.2M H2SO4=2×0.2M1000×100=0.04
M.eq.of.2MNaOH =0.21000×100=0.02
left [H+]=0.04-0.02=0.02 .
Total volume =200=.02200=.0001=10-4M
pH=4 .

Topic: Chemistry, Ionic Equilibrium, NEET
What is the nature of the space lattice in the case of crystalline solids?

Options:
A Two-dimensional array of points
B One-dimensional array of points
C Three-dimensional array of points
D Random arrangement of points

The correct answer is:
Three-dimensional array of points

Solution:
In the case of crystalline solids, the space lattice is a three-dimensional array of points, as mentioned in the paragraph.

Topic: Chemistry, Solid State, NEET
What is the nature of the strands of the DNA duplex?

Options:
A Anti-parallel and complementary
B Identical and complementary
C Anti-parallel and non-complementary
D Dissimilar and non-complementary

The correct answer is:
Anti-parallel and complementary

Solution:
The two strands of DNA are anti parallel and complementary. One starnd runs in 5' to 3' direction and other strand runs in 3' to 5' direction. The antiparallel nature is for formation of hydrogen bonds between the nitrogen bases. The two strand are complementary, if sequence of one base is known than other can be predicted following base pairing rule.

Topic: Biology, Molecular Basis of Inheritance, NEET
What is the nature of the tri-chlorides, bromides, and iodides of group 13 elements in water?

Options:
A Ionic
B Metallic
C Covalent
D Hydrogen bonded

The correct answer is:
Covalent

Solution:
The tri-chlorides, bromides, and iodides of group 13 elements are covalent in nature when they are hydrolyzed in water.

Topic: Chemistry, p Block Elements (Group 13 & 14), NEET
What is the nature of the wavefronts emerging from the final image when a point is placed at the focal point of a convergent lens and another convergent lens of short focal length is placed on the other side?

Options:
A Spherical
B Planar
C Cylindrical
D Elliptical

The correct answer is:
Spherical

Solution:
Correct Option is : (A)
Spherical

Topic: Chemistry, Wave Optics, NEET
What is the nephron?

Options:
A The functional unit of the bladder
B The functional unit of the renal pelvis
C The functional unit of the urethra
D The functional unit of the kidney

The correct answer is:
The functional unit of the kidney

Solution:
Nephron is the functional unit of kidney.

Topic: Biology, Excretory Products and their Elimination, NEET
What is the net balanced equation for the given redox reaction after canceling electrons on both sides?

Options:
A 6I-(aq) + 2MnO4- (aq) + 4H2O(l) → 3I2(s) + 2MnO2(s) + 8OH-(aq)
B 6I-(aq) + 2MnO4- (aq) + 4H2O(l) → 3I2(s) + 2MnO2(s) + 4OH-(aq)
C 6I-(aq) + MnO4- (aq) + 4H2O(l) → 3I2(s) + 2MnO2(s) + 8OH-(aq)
D 3I-(aq) + MnO4- (aq) + 2H2O(l) → 3I2(s) + MnO2(s) + 4OH-(aq)

The correct answer is:
6I-(aq) + 2MnO4- (aq) + 4H2O(l) → 3I2(s) + 2MnO2(s) + 8OH-(aq)

Solution:
The passage provides this equation as the net balanced equation for the given redox reaction after canceling electrons on both sides.

Topic: Chemistry, Redox Reactions, NEET
What is the net charge inside the black box if careful measurement of the electric field at the surface of the box indicates that the net outward flux through the surface of the box is 8.0 × ${{10}^{3}}$N${{m}^{2}}$/C?

Options:
A 0.7 uC
B 2.1 uC
C 4.2 uC
D 16 uC

The correct answer is:
0.7 uC

Solution:
Correct Option is : (A)
0.7 uC

Topic: Chemistry, Electrostatics, NEET
What is the net charge on the conducting sphere with a radius of 10 cm, when the electric field 20 cm from the center of the sphere is 1.5 × ${{10}^{3}}$ N/C and points radially inward?

Options:
A 6.67 nC
B –6.67 nC
C –7.67 nC
D –3.67 nC

The correct answer is:
–6.67 nC

Solution:
Correct Option is : (B)
–6.67 nC

Topic: Chemistry, Electrostatics, NEET
What is the net displacement of the cyclist who starts from the center O of a circular park with a radius of 1 km, reaches the edge P, cycles along the circumference, and returns to the center along QO, if the round trip takes 10 minutes?

Options:
A 0 km
B 1.414 km
C 1.57 km
D 6.28 km

The correct answer is:
1.414 km

Solution:
Correct Option is : (B)
1.414 km

Topic: Chemistry, Motion In Two Dimensions, NEET
What is the net electric field on the Cl atom due to eight Cs atoms in the crystal unit of cesium chloride, CsCl, represented in Fig. 1.10?

Options:
A 0.40 N/C
B 0.20 N/C
C Zero
D 0.80 N/C

The correct answer is:
Zero

Solution:
Correct Option is : (C)
Zero

Topic: Chemistry, Electrostatics, NEET
What is the net electric flux through a cubic Gaussian surface with an edge length of 9.0 cm, placed at the center of a point charge of 2.0 mC?

Options:
A 0 Nm²/C
B 4.0 × ${{10}^{5}}$Nm²/C
C 1.9 × ${{10}^{5}}$ Nm²/C
D 2.7 × ${{10}^{5}}$ Nm²/C

The correct answer is:
1.9 × ${{10}^{5}}$ Nm²/C

Solution:
Correct Option is : (C)
1.9 × ${{10}^{5}}$ Nm²/C

Topic: Chemistry, Electrostatics, NEET
What is the net enthalpy change of a reaction?

Options:
A The enthalpy change when all bonds in the reactant molecules are broken.
B The enthalpy change when all bonds in the product molecules are broken.
C The enthalpy change when all bonds in both reactant and product molecules are broken.
D The enthalpy change when the reaction occurs at constant pressure.

The correct answer is:
The enthalpy change when all bonds in both reactant and product molecules are broken.

Solution:
The net enthalpy change of a reaction considers the energy required to break all bonds in both reactant and product molecules.

Topic: Chemistry, Thermodynamics (C), NEET
What is the net gain of ATP in glycolysis?

Options:
A four
B three
C two
D six

The correct answer is:
two

Solution:
Glycolysis produces four ATP as a gross gain, out of which 2 ATP are used as compensation for the used ATP. Two ATP are consumed in the preparatory phase of glycolysis. One ATP is used in the conversion of glucose to glucose-6-phosphate and other ATP is used in conversion of fructose-6-phosphate to fructose-1,6-biphosphate. Hence, the actual ATP gain from this reaction is 2 ATP.

Topic: Biology, Respiration in Plants, NEET
What is the net gain of ATP molecules during aerobic respiration of one molecule of glucose?

Options:
A 8 ATP molecules
B 18 ATP molecules
C 28 ATP molecules
D 38 ATP molecules

The correct answer is:
38 ATP molecules

Solution:
The net gain of ATP molecules during aerobic respiration of one molecule of glucose is 38.

Topic: Biology, Respiration in Plants, NEET
What is the net gain of ATP when each molecule of glucose is converted to two molecules of pyruvic acid?

Options:
A Six
B Two
C Eight
D Four

The correct answer is:
Eight

Solution:
Glycolysis is the step-wise breakdown of glucose into 3-carbon pyruvic acid. There are many enzymatically controlled steps. There are 2 ATP molecules which are consumed. The net gain of ATP in glycolysis is 8 ATP.

Topic: Biology, Respiration in Plants, NEET, NEET 2022 (Phase 1)
What is the net ionic equation for the oxidation of Fe2+ ions to Fe3+ ions in the presence of Cr2O72- ions in acidic medium?

Options:
A 6Fe2+(aq) +Cr2O72-(aq) → 6 Fe3+(aq) + 2Cr3+(aq) + 7H2O(l)
B 6Fe2+(aq) +Cr2O72-(aq) + 14H+(aq) → 6Fe3+(aq) + 2Cr3+(aq) + 7H2O(l)
C Fe2+(aq) +Cr2O72-(aq) → Fe3+(aq) + Cr3+(aq)
D Fe2+(aq) +Cr2O72-(aq) + 6e- →Fe3+(aq) + 2Cr3+(aq) + 7H2O(l)

The correct answer is:
6Fe2+(aq) +Cr2O72-(aq) + 14H+(aq) → 6Fe3+(aq) + 2Cr3+(aq) + 7H2O(l)

Solution:
This is the net ionic equation provided in the passage.

Topic: Chemistry, Redox Reactions, NEET
What is the net power consumed by a 100 W resistor connected to a 220 V, 50 Hz AC supply over a full cycle?

Options:
A 100 W
B 220 W
C 484 W
D 5000 W

The correct answer is:
484 W

Solution:
Correct Option is : (C)
484 W

Topic: Chemistry, Alternating Current, NEET
What is the net primary productivity (NPP) in an ecosystem?

Options:
A Gross primary productivity minus respiration losses
B Gross primary productivity plus respiration losses
C Gross primary productivity only
D Neither A) nor B)

The correct answer is:
Gross primary productivity minus respiration losses

Solution:
Gross primary productivity minus respiration losses (R) is the net primary productivity (NPP). GPP – R = NPP

Topic: Biology, Ecosystem, NEET
What is the net result of the lanthanoid contraction on the second and third d series?

Options:
A It causes a decrease in radii.
B It causes an increase in radii.
C It has no effect on radii.
D It causes a significant increase in radii.

The correct answer is:
It has no effect on radii.

Solution:
The net result of the lanthanoid contraction is that the second and third d series exhibit similar radii.

Topic: Chemistry, d and f Block Elements, NEET
What is the net work done by the system when changing the state of a gas from equilibrium state A to equilibrium state B via a process in which the net heat absorbed by the system is 9.35 cal, given that 1 cal is equal to 4.19 J?

Options:
A 16.88 J
B 22.31 J
C 9.35 J
D 4.19 J

The correct answer is:
16.88 J

Solution:
Correct Option is : (A)
16.88 J

Topic: Chemistry, Thermodynamics, NEET
What is the network of hyphae called?

Options:
A Pseudohyphae
B Hyphae
C Mycelium
D Coenocytic hyphae

The correct answer is:
Mycelium

Solution:
The network of hyphae is known as mycelium.

Topic: Biology, Biological Classification, NEET
What is the neural organization like in Hydra?

Options:
A Simple
B Complex
C Moderately developed
D Not mentioned

The correct answer is:
Simple

Solution:
The neural organization is very simple in lower invertebrates such as Hydra, and is composed of a network of neurons.

Topic: Biology, Neural Control and Coordination, NEET
What is the neural system like in insects?

Options:
A Simple
B Complex
C Moderately developed
D Not mentioned

The correct answer is:
Moderately developed

Solution:
The neural system is better organized in insects, where a brain is present along with a number of ganglia and neural tissues, making it moderately developed.

Topic: Biology, Neural Control and Coordination, NEET
What is the neural system of all animals composed of?

Options:
A A network of nerves.
B A network of muscles.
C Highly specialised cells called neurons.
D Hormones.

The correct answer is:
Highly specialised cells called neurons.

Solution:
The neural system of all animals is composed of highly specialized cells called neurons, which can detect, receive, and transmit different kinds of stimuli.

Topic: Biology, Neural Control and Coordination, NEET
What is the new pattern followed beginning with scandium (Sc) in the filling of orbitals?

Options:
A The 4p orbital is filled first.
B The 2s orbital is filled first.
C The 3d orbital is filled first.
D The 4s orbital is filled first.

The correct answer is:
The 3d orbital is filled first.

Solution:
"The 3d orbital, being lower in energy than the 4p orbital, is filled first."

Topic: Chemistry, Structure of Atom, NEET
What is the next event after formation of gametes in Human Reproduction?

Options:
A Transfer of sperms
B Fusion of gametes
C Embryonic development
D Delivery of the baby

The correct answer is:
Transfer of sperms

Solution:
The next event after the formation of gametes in Human Reproduction is the transfer of sperms into the female genital tract, known as insemination.

Topic: Biology, Human Reproduction, NEET
What is the next part of the renal tubule after the Henle's loop?

Options:
A Distal Convoluted Tubule (DCT)
B Collecting Duct
C Proximal Convoluted Tubule (PCT)
D Medullary Pyramid

The correct answer is:
Distal Convoluted Tubule (DCT)

Solution:
The ascending limb of the Henle's loop continues as another highly coiled tubular region called the distal convoluted tubule (DCT).

Topic: Biology, Excretory Products and their Elimination, NEET
What is the next part of the renal tubule after the proximal convoluted tubule (PCT)?

Options:
A Distal Convoluted Tubule (DCT)
B Henle's Loop
C Collecting Duct
D Medullary Pyramid

The correct answer is:
Henle's Loop

Solution:
A hairpin shaped Henle's loop is the next part of the tubule after the proximal convoluted tubule (PCT).

Topic: Biology, Excretory Products and their Elimination, NEET
What is the non-reducing end of a polysaccharide chain?

Options:
A The right end
B The left end
C The helical portion
D The reducing end

The correct answer is:
The left end

Solution:
The left end of a polysaccharide chain is defined as the non-reducing end.

Topic: Biology, Biomolecules (B), NEET
What is the normal cardiac output of a healthy individual?

Options:
A 10 litres
B 5 litres
C 2 litres
D 7 litres

The correct answer is:
5 litres

Solution:
The normal cardiac output of a healthy individual averages 5000 mL or 5 litres.

Topic: Biology, Body Fluids and Circulation, NEET
What is the normal range of glomerular filtration rate (GFR) in a healthy individual?

Options:
A 50-60 ml/minute
B 100-110 ml/minute
C 125-135 ml/minute
D 180-190 litres per day

The correct answer is:
125-135 ml/minute

Solution:
A healthy individual has a GFR of approximately 125 ml/minute.

Topic: Biology, Excretory Products and their Elimination, NEET
What is the normal range of platelets counted in the blood?

Options:
A 20,000-30,000/mm³
B 1,500,00-3,500,00/mm³
C 5,000-8,000/mm³
D 100,000-150,000/mm³

The correct answer is:
1,500,00-3,500,00/mm³

Solution:
Blood normally contains 1,500,00-3,500,00 platelets/mm³

Topic: Biology, Body Fluids and Circulation, NEET
What is the normal reading of blood pressure?

Options:
A 120/80 mm Hg
B 140/90 mm Hg
C 150/100 mm Hg
D 160/90 mm Hg

The correct answer is:
120/80 mm Hg

Solution:
A normal reading of blood pressure is considered to be 120/80 mm Hg, where 120 mm Hg is the systolic pressure and 80 mm Hg is the diastolic pressure.

Topic: Biology, Body Fluids and Circulation, NEET
What is the notochord replaced by in the adult members of Vertebrata subphylum?

Options:
A Cartilaginous
B Bony
C Muscular
D None of the above

The correct answer is:
Bony

Solution:
In the Vertebrata subphylum, the notochord is replaced by a cartilaginous or bony vertebral column in the adult.

Topic: Biology, Animal Kingdom, NEET
What is the number of all individual atoms in the structure of 2-Hydroxy Cyclopentanecarbaldehyde?

Options:
A 6 Carbon, 12 Hydrogen and 2 Oxygen atoms
B 6 Carbon, 10 Hydrogen and 2 Oxygen atoms
C 6 Carbon, 10 Hydrogen and 1 Oxygen atoms
D 5 Carbon, 10 Hydrogen and 2 Oxygen atoms

The correct answer is:
6 Carbon, 10 Hydrogen and 2 Oxygen atoms

Solution:
Correct Option is : (B)
6 Carbon, 10 Hydrogen and 2 Oxygen atoms

Topic: Chemistry, Aldehydes and Ketones, NEET
What is the number of all individual atoms in the structure of 4-Nitropropiophenone?

Options:
A 8 Carbon, 9 Hydrogen, 1 Nitrogen and 3 oxygen atoms
B 9 Carbon, 9 Hydrogen, 1 Nitrogen and 2 oxygen atoms
C 9 Carbon, 11 Hydrogen, 1 Nitrogen and 3 oxygen atoms
D 9 Carbon, 9 Hydrogen, 1 Nitrogen and 3 oxygen atoms

The correct answer is:
9 Carbon, 9 Hydrogen, 1 Nitrogen and 3 oxygen atoms

Solution:
Correct Option is : (D)
9 Carbon, 9 Hydrogen, 1 Nitrogen and 3 oxygen atoms

Topic: Chemistry, Aldehydes and Ketones, NEET
What is the number of all individual atoms in the structure of Phenyl acetaldehyde?

Options:
A 8 Carbon, 8 Hydrogen and 1 Oxygen atom
B 8 Carbon, 9 Hydrogen and 1 Oxygen atom
C 8 Carbon, 7 Hydrogen and 1 Oxygen atom
D 7 Carbon, 8 Hydrogen and 1 Oxygen atom

The correct answer is:
8 Carbon, 8 Hydrogen and 1 Oxygen atom

Solution:
Correct Option is : (A)
8 Carbon, 8 Hydrogen and 1 Oxygen atom

Topic: Chemistry, Aldehydes and Ketones, NEET
What is the number of all individual items present in 1-Bromo-4-sec. butyl-2-methylbenzene?

Options:
A 13 carbon, 15 hydrogen and 1 bromine atoms
B 11 carbon, 15 hydrogen and 1 bromine atoms
C 11 carbon, 16 hydrogen and 1 bromine atoms
D 11 carbon, 15 hydrogen and 2 bromine atoms

The correct answer is:
11 carbon, 15 hydrogen and 1 bromine atoms

Solution:
Correct Option is : (B)
11 carbon, 15 hydrogen and 1 bromine atoms

Topic: Chemistry, Haloalkanes and Haloarenes, NEET
What is the number of all individual items present in 1-Chloro-4-ethylcyclohexane?

Options:
A 8 carbon, 17 hydrogen and 1 chlorine atoms
B 9 carbon, 15 hydrogen and 1 chlorine atoms
C 8 carbon, 15 hydrogen and 1 chlorine atoms
D 8 carbon, 14 hydrogen and 1 chlorine atoms

The correct answer is:
8 carbon, 15 hydrogen and 1 chlorine atoms

Solution:
Correct Option is : (C)
8 carbon, 15 hydrogen and 1 chlorine atoms

Topic: Chemistry, Haloalkanes and Haloarenes, NEET
What is the number of all individual items present in 2-Chloro-3-methylpentane?

Options:
A 6 carbon, 13 hydrogen and 1 chlorine atoms
B 6 carbon, 15 hydrogen and 1 chlorine atoms
C 6 carbon, 13 hydrogen and 2 chlorine atoms
D 7 carbon, 13 hydrogen and 1 chlorine atoms

The correct answer is:
6 carbon, 13 hydrogen and 1 chlorine atoms

Solution:
Correct Option is : (A)
6 carbon, 13 hydrogen and 1 chlorine atoms

Topic: Chemistry, Haloalkanes and Haloarenes, NEET
What is the number of all individual items present in 4-tert.Butyl-3-iodoheptane?

Options:
A 11 carbon, 25 hydrogen and 1 iodine atoms
B 11 carbon, 23 hydrogen and 1 iodine atoms
C 10 carbon, 23 hydrogen and 1 iodine atoms
D 11 carbon, 23 hydrogen and 2 iodine atoms

The correct answer is:
11 carbon, 23 hydrogen and 1 iodine atoms

Solution:
Correct Option is : (B)
11 carbon, 23 hydrogen and 1 iodine atoms

Topic: Chemistry, Haloalkanes and Haloarenes, NEET
What is the number of all individual items present in 1,4-Dibromobut-2-ene?

Options:
A 4 carbon, 9 hydrogen and 2 bromine atoms
B 5 carbon, 6 hydrogen and 2 bromine atoms
C 4 carbon, 8 hydrogen and 2 bromine atoms
D 4 carbon, 6 hydrogen and 2 bromine atoms

The correct answer is:
4 carbon, 6 hydrogen and 2 bromine atoms

Solution:
Correct Option is : (D)
4 carbon, 6 hydrogen and 2 bromine atoms

Topic: Chemistry, Haloalkanes and Haloarenes, NEET
What is the number of ATP and NADPH required for every CO₂ molecule entering the Calvin cycle?

Options:
A 1 ATP and 1 NADPH
B 2 ATP and 1 NADPH
C 3 ATP and 2 NADPH
D 4 ATP and 2 NADPH

The correct answer is:
3 ATP and 2 NADPH

Solution:
For every CO₂ molecule entering the Calvin cycle, 3 molecules of ATP and 2 of NADPH are required.

Topic: Biology, Photosynthesis in Higher Plants, NEET
What is the number of carbon atoms which the palmitic acid and arachidonic acid contain (including carboxyl carbon)?

Options:
A 16, 19
B 15, 19
C 16, 20
D 18, 20

The correct answer is:
16, 20

Solution:
Palmitic acid and Arachidonic acid are fatty acid. Fatty acids are compounds which consists of a carboxylic acid group and an R group, in which number of carbon atom varies from 1 to 19. Palmitic acid consists of 16 carbon and Arachidonic acid consists of 20 carbons including carboxylic carbon.

Topic: Chemistry, Biomolecules, NEET
What is the number of cardiac cycles per minute in a healthy person?

Options:
A 72
B 70
C 60
D 80

The correct answer is:
72

Solution:
A healthy person shows 72 cardiac cycles per minute, meaning the heart beats 72 times in a minute.

Topic: Biology, Body Fluids and Circulation, NEET
What is the number of chamber in mammal's heart?

Options:
A Three
B Two
C Four
D Five

The correct answer is:
Four

Solution:
Mammals have a four-chambered heart, which means it has two atria and two ventricles.

Topic: Biology, Animal Kingdom, NEET
What is the number of chromosomes in a spermatogonium?

Options:
A 46
B 23
C 92
D 69

The correct answer is:
46

Solution:
A spermatogonium contains 46 chromosomes.

Topic: Biology, Human Reproduction, NEET
What is the number of degrees of freedom of molecules of hydrogen in 1 cc of hydrogen gas at NTP?

Options:
A 1.344 × 10²⁰
B 1.344 × 10¹⁹
C 1.344 × 10²¹
D 1.344 × 10¹⁸

The correct answer is:
1.344 × 10²⁰

Solution:
Correct Option is : (A)
1.344 × 10²⁰

Topic: Chemistry, Kinetic Theory of Gases, NEET
What is the number of different isomeric alkyl groups corresponding to the molecular formula C5H11?

Options:
A 10
B 8
C 6
D 12

The correct answer is:
8

Solution:
Correct Option is : (B)
8

Topic: Chemistry, Hydrocarbons, NEET
What is the number of different isomeric amines corresponding to the molecular formula, C4H11N?

Options:
A 4
B 9
C 6
D 8

The correct answer is:
8

Solution:
Correct Option is : (D)
8

Topic: Chemistry, Amines, NEET
What is the number of different isomers corresponding to the 5th member of alkyne series and what type of isomerism is exhibited by different pairs of isomers?

Options:
A 7 different isomers , Position and Chain isomerism shown by different pairs
B 7 different isomers , No isomerism shown by different pairs
C 6 different isomers , Position and Chain isomerism shown by different pairs
D 8 different isomers , Position and Chain isomerism shown by different pairs

The correct answer is:
7 different isomers , Position and Chain isomerism shown by different pairs

Solution:
Correct Option is : (A)
7 different isomers , Position and Chain isomerism shown by different pairs

Topic: Chemistry, Hydrocarbons, NEET
What is the number of different isomers corresponding to the molecular formula, C3H9N.

Options:
A 6
B 5
C 3
D 4

The correct answer is:
4

Solution:
Correct Option is : (D)
4

Topic: Chemistry, Amines, NEET
What is the number of electrons and holes in a pure Si crystal doped by 1 ppm concentration of pentavalent As, given that the crystal has a concentration of 5 × 1028atoms m–3and ni=1.5×1016m–3?

Options:
A 6.5 × 109m–3
B 5.5 × 109m–3
C 3.5 × 109m–3
D 4.5 × 109m–3

The correct answer is:
4.5 × 109m–3

Solution:
Correct Option is : (D)
4.5 × 109m–3

Topic: Chemistry, Semiconductors, NEET
What is the number of extinct animals documented by the IUCN Red List (as per 2004) in the last 500 years?

Options:
A 338
B 359
C 2000
D 784

The correct answer is:
784

Solution:
The IUCN Red List (2004) documents the extinction of 784 species (including 338 vertebrates, 359 invertebrates and 87 plants) in the last 500 years.

Topic: Biology, Biodiversity and its Conservation, NEET
What is the number of fungi species in the world compared to the combined total of species of fishes, amphibians, reptiles and mammals?

Options:
A Less
B Same
C More
D Much more

The correct answer is:
More

Solution:
The number of fungi species in the world is more than the combined total of species of fishes, amphibians, reptiles and mammals.

Topic: Biology, Biodiversity and its Conservation, NEET
What is the number of hormones found in invertebrates?

Options:
A A large number of hormones
B Few hormones
C No hormones
D A moderate number of hormones

The correct answer is:
Few hormones

Solution:
Invertebrates possess very simple endocrine systems with few hormones.

Topic: Biology, Chemical Coordination and Integration, NEET
What is the number of kJ of heat necessary to raise the temperature of 60.0 g of aluminium from 35°C to 55°C? (Molar heat capacity of Al is 24 J mol–1K–1)

Options:
A 1.854 kJ
B 1.567 kJ
C 1.067 kJ
D 0.854 kJ

The correct answer is:
1.067 kJ

Solution:
Correct Option is : (C)
1.067 kJ

Topic: Chemistry, Thermodynamics (C), NEET