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Medical
3 hours, 33 minutes ago
20190221_102052.jpg A gas is allowed to expand at constant temperature from a volume of 400 ml to a volume of one litre. The final pressure of gas is 100mm of Hg. The initial pressure of the gas in nm is 1) 100 2) 200 3) 2504) 500

S santhosh
Answered 3 hours, 33 minutes ago
PV=constant P1V1=P2V2 P1*400=100*1000 P1= 250 option 3) is correct.
Medical
3 days, 2 hours ago
the temperature gradient in rod of 0.5m long is 80 degree centigrade per metre.if the temp.of hotter end of rod is 30 degree cntgrades,then the temperature of the colder end is? @vijay

S safeer
Answered 3 days, 2 hours ago

Medical
5 days, 5 hours ago
Screenshot_729.png

In a diffraction pattern due to a single slit of width 'a', the first minimum is observed at an angle 30° when light of wavelength   is incident on the slit. The first secondary maximum is observed at an angle of:

S safeer
Answered 5 days, 5 hours ago
For first minima;  since  For  secondary maxima
Medical
1 week, 4 days ago

Which one of the following pairs of structures is correctly matched with their correct description

• Option 1)

1

• Option 2)

2

• Option 3)

3

• Option 4)

4

K kashimalla sravankumar
Answered 5 days, 5 hours ago

4

Medical
1 week, 4 days ago

Fastest distribution of some injectible material / medicine and with no risk of any kind can be achieved by injecting it into the

• Option 1)

arteries

• Option 2)

veins

• Option 3)

lymph vessels

• Option 4)

muscles

S solutionqc
Answered 1 week, 3 days ago
Option 1) arteries Option 2) veins Option 3) lymph vessels Option 4) muscles
Medical
1 week, 4 days ago

Identify the components labelled A, B, C and D in the diagram below from the list (i) to (viii) given along with

Components : (i) Cristae of mitochondria (ii) Inner membrane of mitochondria (iii) Cytoplasm (iv) Smooth endoplasmic reticulum (v) Rough endoplasmic reticulum (vi) Mitochondrial matrix (vii) Cell vacuole (viii) Nucleus The correct components are

• Option 1)

A - (i) , B-(iv) , C-(viii) , D-(vi)

• Option 2)

A-(vi), B-(v),C-(iv), D-(vii)

• Option 3)

A-(v), B-(i), C-(iii), D-(ii)

• Option 4)

A-(v), B-(iv) ,C-(viii), D-(iii)

S solutionqc
Answered 1 week, 3 days ago
Option 1) A - (i) , B-(iv) , C-(viii) , D-(vi) Option 2) A-(vi), B-(v),C-(iv), D-(vii) Option 3) A-(v), B-(i), C-(iii), D-(ii) Option 4) A-(v), B-(iv) ,C-(viii), D-(iii)
Medical
1 week, 4 days ago

Which of the following is correctly matched

• Option 1)

Aerenchyma-Opuntia

• Option 2)

Age pyramid-Biome

• Option 3)

Parthenium hysterophorus-Threat to biodiversity

• Option 4)

Stratification-Population

S solutionqc
Answered 1 week, 3 days ago
Option 1) Aerenchyma-Opuntia Option 2) Age pyramid-Biome Option 3) Parthenium hysterophorus-Threat to biodiversity Option 4) Stratification-Population
Medical
1 week, 4 days ago

select the wrong statement

• Option 1)

Bacterial cell wall is made up of peptidoglycan

• Option 2)

Pili and fimbriae are mainly involved in motility of bacterial cells

• Option 3)

Cyanobacteria lack flagellated cells.

• Option 4)

Mycoplasma is a wall-less microorganism

S solutionqc
Answered 1 week, 3 days ago
Option 1) Bacterial cell wall is made up of peptidoglycan Option 2) Pili and fimbriae are mainly involved in motility of bacterial cells Option 3) Cyanobacteria lack flagellated cells. Option 4) Mycoplasma is a wall-less microorganism
Medical
1 week, 4 days ago

select the mismatch

• Option 1)

Gas vacuoles-Green bacteria

• Option 2)

Large central vacuoles – Animal cells

• Option 3)

Protists – Eukaryotes

• Option 4)

Methanogens –Prokaryotes

S solutionqc
Answered 1 week, 3 days ago
Option 1) Gas vacuoles-Green bacteria Option 2) Large central vacuoles – Animal cells Option 3) Protists – Eukaryotes Option 4) Methanogens –Prokaryotes
Medical
2 weeks ago

The dimension of are :

• Option 1)

• Option 2)

• Option 3)

• Option 4)

S solutionqc
Answered 1 week, 6 days ago
Option 1) Option 2) Option 3) Option 4)
Medical
2 weeks, 1 day ago

A rod of weight w is supported by two parallel knife edges A and B and is in equilibrium in a horizontal position. The knives are at a distance d from each other. The centre of mass of the rod is at distance x from A. The normal reaction on A is:

• Option 1)

• Option 2)

• Option 3)

• Option 4)

S solutionqc
Option 1) Option 2) Option 3) Option 4)
Medical
2 weeks, 1 day ago

what are alpha-1-antitrypsin

S Sonika
Alpha 1 antitrysin is a glycoprotein that inactivates certain proteases and maintains the protease-antiprotease equillibrium in liver.
Medical
3 weeks, 6 days ago
s.PNG The number of electrons in the penultimate shell of S is:-

A Ankit
Answered 3 weeks, 6 days ago
The shell which is before the valence shell is called the penultimate shell. If 'n' is the valence shell then (n-1) is the penultimate shell.  Electronic configuration of S(sulphur) = 2. 8. 6. so,  Number of e- in valence shell=6 Number of e- in penultimate shell=8
Medical
4 weeks ago
My_Snapshot_11.jpg 10 mL of gaseous hydrocarbon on combustion give 40 mL of C02(g) and 50 mL of H20 (vap.). The hydrocarbon is -

A Ankit
Question 60-   first solution is - 10 mL of gaseous hydrocarbon on combustion gives 40 mL of CO2 The number of C atoms in the formula unit is 40/10×1=4 and 10 mL of gaseous hydrocarbon on combustion gives 50 mL of H2O 50/10×2 =10  The hydrocarbon is C4H10   Second solution is:- the ratio of volumes is  10 : 40 : 50  1 : 4 : 5  all the Carbon from the hydrocarbon is in the CO2  10 ml of...
Medical
4 weeks ago
Screenshot_2019-01-23_at_4.51.17_PM.png A mixture of 2.3 g formic acid and 4.5 g oxalic acid is treated with conc. H2SO4. The evolved gaseous mixture is passed through KOH pellets. Weight (in g) of the remaining product at STP will be

A Ankit
Number of Moles - No of moles = given mass of substance/ molar mass of substance                                        (H2O is absorbed by H2SO4)                              (CO2 is absorbed by KOH and H2O   by H2SO4) Total moles of CO is 0.1 mole i.e. 2.8 gm.
Medical
4 weeks ago
Screenshot_2019-01-23_at_4.56.18_PM.png What is the mass of the precipitate formed when 50 mL of 16.9% solution of AgNO3 is mixed with 50 mL of 5.8% NaCl solution ?(Ag = 107.8, N = 14, O = 16, Na = 23, CI = 35.5)

A Ankit
Mass percent of the solution - Mass percent = ((mass of solute)/(mass of solution) ) X 100  it is a mass of solute present in 100-gram solution. 16.9% solution of AgNO3 means 16.9g AgNO3 in 100ml solution.     50ml of solution contains Similarly, 100ml of other solution contains 5.8g NaCl 50ml of other solution contains 2.9g NaCl Mol of AgNO3 = Mol of NaCl = AgNO3    +      NaCl          ...
Medical
4 weeks ago
Screenshot_2019-01-23_at_4.55.28_PM.png In an experiment it showed that 10 ml of 0.05M solution of chloride required 10 mL of 0.1 M solution of AgNO3 ,Â which of the following will be the formula of the chloride (X stands for the symbol of the element other than chlorine):

A Ankit

Stoichiometry -

Stoichiometry deals with measurements of reactants and products in a chemical reaction.

- wherein

aA (g) + bB (g) → cC (g) + dD (g)

Here, ‘a’ moles of A(g) reacts with ‘b’ moles of B(g) to give ‘c’ mole of C(g) and ‘d’ moles of D(g)

No. of moles of AgNO3=10-3 mol

No. of moles the chloride= 0.5 x 10-3 mol

Suppose the formula for the chloride is XCln then moles of chloride ion=n x 0.5 x 10-3

Reaction goes as follows:

$Ag^{+} \: +\: \: Cl^{-} \: \: \rightarrow AgCl$

Then, going by stoichiometry we get

n x 0.5 x 10-3= 10-3

$\Rightarrow$ n=2

Therefore, formula is XCl2

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Medical
1 month, 2 weeks ago
WhatsApp_Image_2018-08-21_at_5.18.22_PM.jpeg consider the arrangement of three plates X, Y and Z each of area A and separation d. The energy stored when the plates are fully charged is

S safeer
Answered 1 month, 2 weeks ago

both capacitors are in parallel.

$C=\frac{2\epsilon_0A}{d}$

energy stored

$=\frac{1}{2}CV^2=\frac{\epsilon_0AV^2}{d}$

Medical
1 month, 2 weeks ago
Can you Please share important 16% syllabus of Neet ug
Medical
63 Views   |   2 months, 3 weeks ago

Fusion reaction takes place at high temperature because:

• Option 1)

Molecules break up at high temperature

• Option 2)

Nuclei break up at high temperature

• Option 3)

Atoms get ionized at high temperature

• Option 4)

Kinetic energy is high enough to overcome the coulomb repulsion between nuclei