datavorous/entrance-exam-dataset huggingface dataset:
The bond order in NO is 2.5 while that in NO+ is 3. Which of the following statements is true for these two species?

Options:
A Bond length in NO+ is equal to that in NO
B Bond length in NO+ is greater than in NO
C Bond length in NO is greater than in NO+
D Bond length is unpredictable.

The correct answer is:
Bond length in NO is greater than in NO+

Solution:
Bond length is inversely proportional to bond–order.
Bond order in NO+=3
NO=2.5
So, bond length in NO>NO+

Topic: Chemistry, Chemical Bonding and Molecular Structure, NEET
The bond order of the N−O bonds in NO3- ion is

Options:
A 1.33
B 1.50
C 1.00
D 0.33

The correct answer is:
1.33

Solution:
Bond order =total number of bonds total resonating structures=2+1+13=1.33
Bond Order=1+ π σ =1+ 1 3 =1.33

Topic: Chemistry, Chemical Bonding and Molecular Structure, NEET
The bond present between two nucleotides is known as

Options:
A Phosphoester linkage
B Phosphodiester linkage
C Glycosidic linkage
D Peptide linkage

The correct answer is:
Phosphodiester linkage

Solution:
In a polynucleotide, two nucleotides are joined by phosphodiester bond which is formed between 3' OH of first nucleotide and 5' PO4-3 of second nucleotide. Thus a polynucleotide chain consist of two free ends, 5' PO4-3 and 3' OH.

Topic: Chemistry, Biomolecules, NEET
The bonds present in N2O5(g) are

Options:
A only ionic
B covalent and coordinate
C only covalent
D covalent and ionic

The correct answer is:
covalent and coordinate

Solution:

Topic: Chemistry, Chemical Bonding and Molecular Structure, NEET
The bone matrix consists of

Options:
A 65% inorganic matter and 35% organic matter
B 30% inorganic matter arid 70% organic matter
C 60% inorganic Matter and 40% organic matter
D 40% inorganic matter and 60% Organic matter

The correct answer is:
65% inorganic matter and 35% organic matter

Solution:
65% of bone is made up of inorganic matter and 35% is made up of organic matter.

Topic: Biology, Structural Organisation in Animals, NEET
The bones of forelimbs of whale, bat, cheetah and man are similar in structure, because:

Options:
A one organism has given rise to another
B they share a common ancestor
C they perform the same function
D the have biochemical similarities

The correct answer is:
they share a common ancestor

Solution:
The bones of forelimbs of whale, bat, cheetah and man are similar in structure, because they share a common ancestor and exhibit homology.

Topic: Biology, Evolution, NEET
The Bosch’s process is used for the production of hydrogen gas, which of the given gas is utilised for this

Options:
A Coal gas
B Water gas
C Producer gas
D None of these

The correct answer is:
Water gas

Solution:
CO+H2⏟watergas+H2O→CatalystCO2+2H2

Topic: Chemistry, s Block Elements, NEET
The botanical name of the plant source of colchicine is:

Options:
A Colchicum alpinium
B Sesbania grandiflora
C Colchicum autumnale
D Gloriosa superba

The correct answer is:
Colchicum autumnale

Solution:
The botanical name of the plant source of colchicine is Colchicum autumnale.

Topic: Biology, Morphology of Flowering Plants, NEET
The brain capacities of Homo habilis and Neanderthal man were respectively,

Options:
A 400 - 650 cc, 1100 cc
B 650–800 cc, 1400 cc
C 800 - 1050 cc, 1450 cc
D 1050 - 1400 cc, 1600 cc

The correct answer is:
650–800 cc, 1400 cc

Solution:
Homo habilis is the first human-like (the hominid) organism with cranial capacity of 650–800cc. They probably did not eat meat.
Homo erectus (1.5 mya): Fossils were discovered in Java in 1891. Cranial capacity was 900cc (large brain). They probably ate meat.
Neanderthal man (1,00,000–40,000 years ago): They lived near east and central Asia. Cranial capacity was 1400cc. They used hides to protect their bodies and buried dead individuals.

Topic: Biology, Evolution, NEET
The brain of the cockroach is

Options:
A supra-pharyngeal ganglion
B sub-pharyngeal ganglion
C supra-oesophageal ganglion
D sub-oesophageal ganglion

The correct answer is:
supra-oesophageal ganglion

Solution:
The head of the cockroach has a nerve ring made up of supra-oesophageal ganglion, sub-oesophageal ganglion, and circum-oesophageal connectives. Out of this, the supra oesophageal ganglion is the largest and it is also called cerebral ganglia or brain of the cockroach.

Topic: Biology, Structural Organisation in Animals, NEET
The breeding of the unrelated animals, which may be between individuals of the same breed but having no common ancestors for 4-6 generations is called

Options:
A Inbreeding
B Cross-breeding
C Out-crossing
D Inter-specific hybridization

The correct answer is:
Out-crossing

Solution:
Out-breeding is the breeding of unrelated animals, which may be between individuals of the same breed but having no common ancestors for 4-6 generations (out-crossing) or between different breeds (cross-breeding) or different species (inter-specific hybridization).

Topic: Biology, Strategies for Enhancement in Food Production, NEET
The Brewsters angle ib for an interface should be

Options:
A 30o<ib<45o
B 45o<ib<90o
C ib=90o
D 0o<ib<30o

The correct answer is:
45o<ib<90o

Solution:
Brewster's angle is defined as the angle of incidence at which the reflection of particular polarized light is zero, and it perfectly transmitted through a transparent surface.

Brewster's angle(ib) is given by, tanib=μ2μ1=μ21, where μ2 is the refractive index of the dielectric and μ1 is the refractive index of air.
We know that, μ2>1. (refractive index of any dielectric will be greater than refractive index of air.)
⇒∞<tanib>1
⇒90o>ib>45o

Topic: Physics, Wave Optics, NEET, NEET 2020 (Phase 1)
The broglie wavelength of a neutron at 927°C is λ . What will be its wavelength at 27° C?

Options:
A λ2
B λ
C 2λ
D 4λ

The correct answer is:
2λ

Solution:
λ =  h 2m(KE) and KE∝T
Let Î»1 and Î»2 be wavelength at 27 and 927 Â°C
Î»1Î»2=T2T1
=1200300=2
Î»1=2Î»2=2Î»

Topic: Chemistry, Structure of Atom, NEET
The bromination of acetone that occurs in acid solution is represented by this equation.
$\mathrm{CH}_3 \mathrm{COCH}_3(a q)+\mathrm{Br}_2(a q) \longrightarrow \mathrm{CH}_3 \mathrm{COCH}_2 \mathrm{Br}(a q)+\mathrm{H}^{+}(a q)+\mathrm{Br}^{-}(a q)$
These kinetic data were obtained for given reaction concentrations.
$\begin{array}{|l|}
\hline \text {Initial concentrations, } M & \\
\begin{array}{c|l|l|l}
{\left[\mathrm{CH}_3 \mathrm{COCH}_3\right]} & {\left[\mathrm{Br}_2\right]} & {\left[\mathrm{H}^{+}\right]} & \text{Initial rate, disappearance of } \mathrm{Br}_2, \mathrm{Ms}^{-1} \\
\hline 0.30 & 0.05 & 0.05 & 5.7 \times 10^{-5} \\
0.30 & 0.10 & 0.05 & 5.7 \times 10^{-5} \\
0.30 & 0.10 & 0.10 & 1.2 \times 10^{-4} \\
0.40 & 0.05 & 0.20 & 3.1 \times 10^{-4}
\end{array} \\ \hline
\end{array}$
Based on these data, the rate equation is

Options:
A Rate $=k\left[\mathrm{CH}_3 \mathrm{COCH}_3\right]\left[\mathrm{H}^{+}\right]$
B Rate $=k\left[\mathrm{CH}=\mathrm{COCH}_3\right]\left[\mathrm{Br}_2\right]$
C Rate $=k\left[\mathrm{CH}_3 \mathrm{COCH}_3\right]\left[\mathrm{Br}_2\right]\left[\mathrm{H}^{+}\right]^2$
D Rate $=k\left[\mathrm{CH}_3 \mathrm{COCH}_3\right]\left[\mathrm{Br}_2\right]\left[\mathrm{H}^{+}\right]$

The correct answer is:
Rate $=k\left[\mathrm{CH}_3 \mathrm{COCH}_3\right]\left[\mathrm{H}^{+}\right]$

Solution:
Key Idea : By comparing the rate and concentration the order of the reaction can be calculated
Let the rate of the reaction wrt $\left[\mathrm{CH}_3 \mathrm{COCH}_3\right]$, $\left[\mathrm{Br}_2\right]$ and $\left[\mathrm{H}^{+}\right]$are $x, y$ and $z$ respectively. Thus,
$\text {Rate } \propto\left[\mathrm{CH}_3 \mathrm{COCH}_3\right]^x\left[\mathrm{Br}_2\right]^y\left[\mathrm{H}^{+}\right]^z$
$5.7 \times 10^{-5}=[0.30]^x[0.05]^y[0.05]^z$
$5.7 \times 10^{-5}=[0.30]^x(0.10)^y(0.05)^z$
$1.2 \times 10^{-4}=[0.30]^x(0.10)^y(0.10)^z$
$3.1 \times 10^{-4}=[0.40]^x(0.05)^y(0.20)^z$
From Eqs (i) and (ii)
$y=0$
From Eqs (ii) and (iii)
$z=1$
From Eqs (i) and (iv)
$x=1$
Thus, rate law $\propto\left[\mathrm{CH}_3 \mathrm{COCH}_3\right]\left[\mathrm{H}^{+}\right]$
$=k\left[\mathrm{CH}_3 \mathrm{COCH}_3\right]\left[\mathrm{H}^{+}\right]$

Topic: Chemistry, Chemical Kinetics, NEET, NEET 2008 (Screening)
The bromine atom possesses 35 electrons. It contains 6 electrons in 2p orbital, 6 electrons in 3p orbital and 5 electrons in 4p orbital. Which of these electron experiences the lowest effective nuclear charge ?

Options:
A 4p
B 2p
C 3p
D None of them experience any force

The correct answer is:
4p

Solution:
Correct Option is : (A)
4p

Topic: Chemistry, Structure of Atom, NEET
The brood pouch in female cockroach is formed by

Options:
A 7th , 8th and 9th sterna
B 7th tergite, 8th and 9th sterna
C 7th, 8th and 9th terga
D 7th sternite, 8th and 9th terga

The correct answer is:
7th , 8th and 9th sterna

Solution:
In female cockroach, the 7th sternite is largest and boat-shaped. The brood pouch or genital pouch is formed by overlapping of 7th sternite with 8th and 9th sterna, whose anterior part contains female gonopore, spermathecal pores, and collateral glands.

Topic: Biology, Structural Organisation in Animals, NEET
The brown coloured gas is prepared by the action of concentrated nitric acid on copper is an equilibrium mixture of dinitrogen tetraoxide and nitrogen dioxide.
N 2 O 4 g ⇌ 2 NO 2 g
Which one of the following changes would result in a darkening of the colour?

Options:
A Increase in temperature
B Increase in pressure
C Addition of a catalyst
D Removal of dinitrogen tetra oxide by liquefaction

The correct answer is:
Increase in temperature

Solution:
N2O4(g)⇌2NO2(g)
Here brown colour is formed due to NO2 gas. Darkening of colour is possible when more NO2 is formed when temperature is increased the equilibrium shifted to the right side as it is an endothermic process.

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET
The brown complex obtained in the detection of nitrate radical is formulated as [Fe(H2O)5NO]SO4 . What is the oxidation number of Fe in this complex?

Options:
A + 1
B + 5
C + 7
D – 8

The correct answer is:
+ 1

Solution:
The brown complex obtained in detection of nitrate radical is
[Fe(H2O)5NO]SO4 or [Fe(H2O)5NO]2+SO42-
The colour of the complex is due to charge transfer. This complex formally contains Fe (+1) and NO+ since Fe (II) gains one electron from NO which changes to NO+ .

Topic: Chemistry, Redox Reactions, NEET
The brown - ring complex compound of iron is formulated as [Fe(H2O)5(NO)]SO4. The oxidation state of iron is :

Options:
A 1
B 2
C 3
D 0

The correct answer is:
1

Solution:
[Fe(H2O)5NO]SO4,
x + 0(5) + 1(1) + 1(-2) = 0
∴ x = +1.
Fe in +1 oxidation state. H2O is neutral ligand. NO+ is in +1 oxidation state.

Topic: Chemistry, Redox Reactions, NEET
The Brownian motion is due to

Options:
A Temperature fluctuation within the liquid phase
B Attraction and repulsion between charges on the colloidal particles
C Impact of the molecules of the dispersion medium on the colloidal particles
D Convectional currents

The correct answer is:
Impact of the molecules of the dispersion medium on the colloidal particles

Solution:
Browniam motion is the random movement of the low weight particles suspended in a fluid.

Topic: Chemistry, Surface Chemistry, NEET
The Brownian motion is due to

Options:
A temperature fluctuations within the liquid phase
B attraction and repulsion between charges on the colloidal particles
C impact of the molecules of the dispersion medium on the colloidal particle
D convection current

The correct answer is:
impact of the molecules of the dispersion medium on the colloidal particle

Solution:
The Brownian motion is due to collision of molecules of dispersion medium changes the direction of motion of colloidal particles.

Topic: Chemistry, Surface Chemistry, NEET
The $B t$ toxin in genetically engineered $B t$ cotton kills the pest by:

Options:
A Creating pores in the midgut
B Damaging the respiratory system
C Degenerating the nervous system
D Altering the pH of body fluids

The correct answer is:
Creating pores in the midgut

Solution:
Option (1) is the correct answer because the activated toxin binds to the surface of midgut epithelial cells and creates pore that cause cell swelling and lysis and eventually cause death of the insect.
$B t$ toxin doesn't kill pest by affecting their respiratory system, nervous system and it doesn't alter the pH of body fluids. So, options (2), (3) and (4) are not the answer.

Topic: Biology, Biotechnology and Its Applications, NEET, NEET 2024 (Re-NEET)
The Bt toxin protein exist as inactive pro-toxins but once an insect ingest the inactive toxin, it is converted into an active form. From the following identify the correct cause of activating the toxin.

Options:
A Acidic condition of the gut
B Optimum plasma osmolality in the gut
C Action of digestive enzymes in the gut
D Alkaline condition of the gut

The correct answer is:
Alkaline condition of the gut

Solution:
Bacillus thuringiensis produces proteins that kill certain insects such as lepidopterans (tobacco budworm, armyworm), coleopterans (beetles), and dipterans (flies, mosquitoes). B. thuringiensis forms protein crystals that contain a toxic insecticidal protein. The Bt toxin protein on ingestion is converted into an active form due to the alkaline pH of the gut of insects which solubilize the crystals.

Topic: Biology, Biotechnology and Its Applications, NEET
The bulk fixation of carbon through photosynthesis, takes place in

Options:
A Crop plants
B Tropical rain forests
C Ocean
D Both Crop plants and Tropical rain forests

The correct answer is:
Ocean

Solution:
Annually, about 75 x 1012 kg of carbon (in the form of CO2) is fixed through photosynthesis. About 90% of it is carried out in the oceans (largely by the phytoplanktons and algae). Only 0.2% of the light energy falling on earth is utilised by photosynthetic organisms.

Topic: Biology, Photosynthesis in Higher Plants, NEET
The Bulk modulus for an incompressible liquid is

Options:
A Zero
B Unity
C Infinity
D Between 0 and 1

The correct answer is:
Infinity

Solution:
The Bulk modulus is given by
B=-pVâV
If liquid is incompressible, so
âV=0
Hence, B=-pV0=∞â¹B=∞(infinity)

Topic: Physics, Mechanical Properties of Solids, NEET
The bulk modulus of a spherical object is B. If it is subjected to uniform pressure p, the fractional decrease in radius is

Options:
A pB
B B3p
C 3pB
D p3B

The correct answer is:
p3B

Solution:
V=Volume of sphere=43πr3
⇒∆VV=3∆rr
also, bulk modulus, B=-p∆VV
-∆VV=pB
3Δrr=pB
Δrr=p3B

Topic: Physics, Mechanical Properties of Solids, NEET, NEET 2017
The bulk modulus of water is 2Ã109â¡Nm-2. The change in pressure required to increase the density of water by 0.1% is

Options:
A 2×109⁡N⁡m-2
B 2×108⁡N⁡m-2
C 2×106⁡N⁡m-2
D 2×104⁡N⁡m-2

The correct answer is:
2×106⁡N⁡m-2

Solution:
The density would increase by 0.1% if the volume decrease by 0.1% .
K=ÎPÎVV
âÎP=KÎVV
âÎP=2Ã109Ã0.1100
âÎP=2Ã106 N m-2

Topic: Physics, Mechanical Properties of Solids, NEET
The bulk modulus of water is 2Ã109 N m-2. The change in pressure required to increase the density of water by 0.1% is -

Options:
A 2Ã109 N m-2
B 2Ã108 N m-2
C 2Ã106 N m-2
D 2Ã104 N m-2

The correct answer is:
2Ã106 N m-2

Solution:
The density would increase by 0.1% if the volume decrease by 0.1%,
K=ÎPÎVV
âÎP=KÎVV=2Ã109Ã0.1100=2Ã106 N m-2

Topic: Physics, Mechanical Properties of Solids, NEET
The C4 plants are different from C3 plants with reference to the

Options:
A Primary CO2 acceptor
B End product of photosynthesis
C Types of pigments involved in photosynthesis
D Both end products of photosynthesis and types of photosynthetic pigments

The correct answer is:
Primary CO2 acceptor

Solution:
In C4 plants, the primary CO2 acceptor is phosphoenol pyruvate (PEP), and in C3 plants, it is ribulose 1-5 biphosphate (RuBP) which is a 5 carbon compound forming an unstable 6 carbon intermediate. This intermediate splits into two molecules of 3 carbon compound called as 3-phosphogylceric acid.

Topic: Biology, Photosynthesis in Higher Plants, NEET
The $\mathrm{C}_4$-plants are photosynthetically more efficient than $\mathrm{C}_3$-plants because

Options:
A the $\mathrm{CO}_2$ compensation point is more
B $\mathrm{CO}_2$ generated during photorespiration is trapped and recycled through PEP carboxylase
C the $\mathrm{CO}_2$ efflux is not prevented
D they have more chloroplasts

The correct answer is:
they have more chloroplasts

Solution:
$\mathrm{C}_4$-plants show Kranz anatomy. In the leaves of $\mathrm{C}_4$-plants, the vascular bundles are surrounded by bundle sheath of parenchymatous cells, which in turn are surrounded by mesophyll cells. Chloroplasts in bundle sheath cells are larger and always contain grana whereas chloroplasts in mesophyll cells are smaller. The $\mathrm{C}_4$-plants are photosynthetically more efficient than $\mathrm{C}_3$-plants because they have more chloroplasts.
Photorespiration takes place only in $\mathrm{C}_3$-plants. It occurs in chlorophyllous tíssue. At high temperature and high oxygen concentration the affinity of RuBP carboxylase for $\mathrm{CO}_2$ decrease and for $\mathrm{O}_2$ increases.
Photosynthesis takes $\mathrm{CO}_2$ and release $\mathrm{O}_2$, while respiration utilizes $\mathrm{O}_2$ and release $\mathrm{CO}_2$. If the light factor is saturating, there will be certain concentration of $\mathrm{CO}_2$ in the atmosphere at which the rate of photosynthesis will be equal to rate of respiration. This is called carbon dioxide compensation point. $\mathrm{C}_4$-plants have very low $\mathrm{CO}_2$ compensation point

Topic: Biology, Photosynthesis in Higher Plants, NEET, NEET 2008 (Screening)
The CN- ion and N2 are isoelectronic. But in contrast to CN-,N2 is chemically inert because of

Options:
A Low bond energy
B Absence of bond polarity
C Unsymmetrical electron distribution
D Presence of more number of electrons in bonding orbital

The correct answer is:
Absence of bond polarity

Solution:
N2 is almost chemically inert because it has very high bond energy and absence of bond polarity.

Topic: Chemistry, Chemical Bonding and Molecular Structure, NEET
The C-O-H bond angle in alcohols is slightly less than the tetrahedral angle whereas the C-O-C bond angle in ether is slightly greater because

Options:
A of repulsion between the two bulky R groups
B O atom in both alcohols and ethers is sp3 -hybridised
C lone pair-lone pair repulsion is greater than bond pair-bond pair repulsion
D None of these

The correct answer is:
of repulsion between the two bulky R groups

Solution:
The C-O-H bond angle in alcohols is slightly less than the tetrahedral angle whereas the C-O-C bond angle in ether is slightly greater because of repulsion between the two bulky R groups.

Topic: Chemistry, Chemical Bonding and Molecular Structure, NEET
The calculated spin only magnetic moment of Cr2+ ion is

Options:
A 4.90 BM
B 5.92 BM
C 2.84 BM
D 3.87 BM

The correct answer is:
4.90 BM

Solution:
Cr+2=3d4

n = number of unpaired electrons.

μ=n(n+2) B.M. =4(6)=24 B.M.

=4.90 B.M.

Topic: Chemistry, Structure of Atom, NEET, NEET 2020 (Phase 1)
The callus culture and suspension culture are used to produce plantlets. They are distinguished by

Options:
A Callus culture is in vitro while suspension is in vivo
B In callus culture, shoots are organised whereas in suspension culture somatic embryo is organised
C In callus culture hormone is present but in suspension culture hormone is absent
D None of the above

The correct answer is:
In callus culture, shoots are organised whereas in suspension culture somatic embryo is organised

Solution:
The callus culture and suspension culture both are in vitro technique. The callus is the group of an undifferentiated mass of cells whereas in suspension culture somatic embryo is differentiated.

Topic: Biology, Strategies for Enhancement in Food Production, NEET
The Cannizzaro reaction of PhCOCHO forms the product(s)

Options:
A PhCOCH2OH+PhCOCOO-
B PhCHOHCOO-
C PhCOO-+PhCOCH2OH
D Both A and C

The correct answer is:
PhCHOHCOO-

Solution:
In internal crossed-Cannizzaro reaction, -CHO is oxidised (because it has aldehydic H needed for hydride transfer). Keto group can only be reduced, and not oxidised in corssed-Cannizzaro reaction.

Topic: Chemistry, Aldehydes and Ketones, NEET
The capacitance of a capacitor with charge $q$ and a potential difference $V$ depends on

Options:
A both $q$ and $V$
B the geometry of the capacitor
C q only
D V only

The correct answer is:
the geometry of the capacitor

Solution:
Capacitance of capacitor $C=\frac{A \varepsilon_0}{d}$
so capacitance of capacitor is independent of charge $(q)$ and potential $(V)$, it depends on geometry of the capacitor and medium between plates of the capacitor.

Topic: Physics, Capacitance, NEET, NEET 2024 (Re-NEET)
The capacitance of a parallel plate capacitor with air as medium is 3 Î¼F. With the introduction of a dielectric medium between the plates, the capacitance becomes 15 Î¼F. The permittivity of the medium is

Options:
A 5 C2 N-1 m-2
B 15 C2 N-1 m-2
C 0.44Ã10-10 C2 N-1 m-2
D 8.854Ã10-11 C2 N-1 m-2

The correct answer is:
0.44Ã10-10 C2 N-1 m-2

Solution:
The capacitance of air capacitor
C0=AÎµ0d=3 Î¼F ...(i)
When a dielectric of permittivity Îµr or dielectric constant K is introduced between the plates of the capacitor, then its capacitance
C =KAÎµ0d=15 Î¼F ...(ii)
Dividing Eq. (ii) by Eq. (i)
CC0= KAÎµ0dAÎµ0d=153
â´ K=5
Permittivity of the medium
Îµ= Îµ0K
=8.854Ã10-12Ã5
=44.27Ã10-12
=0.44Ã10-10 C2 N-1 m-2

Topic: Physics, Electrostatics, NEET
The capacitance of a parallel plate capacitor with air as medium is 6 μF.
With the introduction of a dielectric medium, the capacitance becomes 30 μF. The permittivity of the medium is:
ε0=8.85×10−12 C2 N−1 m−2

Options:
A 1.77×10−12 C2 N−1 m−2
B 0.44×10−10 C2 N−1 m−2
C 5.00 C2 N−1 m−2
D 0.44×10−13 C2 N−1 m−2

The correct answer is:
0.44×10−10 C2 N−1 m−2

Solution:
Cm=∈rC0

∈r=306=5

∈=∈0.∈r=8.85×10−12×5

∈=0.44×10−10

Topic: Physics, Capacitance, NEET, NEET 2020 (Phase 1)
The capacitance of a parallel plate condenser does not depend upon

Options:
A the distance between the plates
B area of the plates
C medium between the plates
D metal of the plates

The correct answer is:
metal of the plates

Solution:
The capacitance of a parallel plate condenser is, C=ε0kAd
Therefore capacitance does not depend on the metal of the plates.

Topic: Physics, Electrostatics, NEET
The capacitive reactance in an A.C. circuit is

Options:
A effective resistance due to capacitor
B effective wattage
C effective voltage
D none of the above

The correct answer is:
effective resistance due to capacitor

Solution:
Capacitive reactance in an A.C. circuit is XC=1ωC Ω, where C is the capacitance of the capacitor and ω=2πn (n is the frequency of the A.C. source).

Topic: Physics, Alternating Current, NEET
The capacity for generating an entirely new individual from a piece of tissue is called

Options:
A sporulation
B budding
C encystation
D fragmentation

The correct answer is:
fragmentation

Solution:
Reproduction is the process of producing a fertile offspring of its own kind.
Asexual reproduction is a mode of reproduction where offspring is produced by a single parent without the requirement of gamete formation and fertilization.
Fragmentation is a type of asexual reproduction where the body of the organism breaks into pieces and each piece gives rise to whole new organism.
In certain organisms, small buds are produced attached to the parent organism which grow and eventually separate to develop into new organism.
In unfavourable condition organism like amoeba secretes a three-layered hard covering around itself and this phenomenon is called as encystation. During favourable condition the encysted organism multiplies by multiple fission.
Certain organism reproduces by formation of small-seed like structures called spore which develops into new individual under favourable condition. Such phenomenon is called sporulation. Many bacteria follow this process.

Topic: Biology, Reproduction in Organisms, NEET