Explore topic-wise InterviewSolutions in Current Affairs.

This section includes 7 InterviewSolutions, each offering curated multiple-choice questions to sharpen your Current Affairs knowledge and support exam preparation. Choose a topic below to get started.

1.

How temperature affects vitmain c content?

Answer»

The amount of Vitamin C CONTENT of some fresh fruit degradaded with time was INVESTIGATED; PINEAPPLE, Orange, Watermelon and Tomato stored under difference conditions. The juices from the samples were extracted and vitamin C content in the JUICE was analysed at ROOM temperature, 40 0 C and at seven (7) days storage by indophenols titration method. The result revealed that
Effect of Temperature and Storage on...

i hope this helps

2.

Which of the following Will show Tyndall effect? milk and sugar solution.

Answer»

Milk will show tyndall EFFECT......because it is a COLLOIDAL SOLUTION.tyndall effect OCCURS in colloidal solution...

3.

14 g of gas has 3.011 x 10^23 molecule.the molecular weight of gas

Answer» 28 of molecul
ar WEIGHT of GAS
4.

Do question no.9 all parts

Answer»

Hey!

___________________

Here is the answer -

a) When we will remove the filter paper from the water, we will see different colours at different heights.

b) Technique used - Chromatography

c) Application - Used for seperating drugs from HUMAN body, used in industrial process of purifying chemicals.

Furthermore, Chromatography is the technique used for seperating a MIXTURE by passing it in SOLUTION through a MEDIUM, where compounds MOVE at a different rate.

___________________

Hope it helps...!!!

5.

What are homogeneous mixture?

Answer»

A HOMOGENEOUS mixture is simply any mixture that is UNIFORM in composition throughout.. I HOPE this HELPS you

6.

How will be the melting in intramolecular hydroden bonding

Answer»

Intramolecular H-bonding as we KNOW a strong FORCE.. It can be melt with high TEMP in presence of some other SUBSTANCE LIKE acid in absence of air...

7.

Write any one property of suspension.

Answer»

: A suspension is a heterogeneous mixture in which solids are DISPERSED in liquids. The SOLUTE particles insuspension do not DISSOLVE but remain suspended throughout the medium.

8.

How much water should you drink a day maximum

Answer»

We should DRINK 2 to 5 LITERS of water a day

9.

What is the difference in pH for 1/3 and 2/3 stages of neutralisation of 0.1 M CH3COOH with 0.1 M NaOH.

Answer»

CH₃COOH(aq) ⇌ CH₃COO⁻(aq) + H⁺(aq) ….. Ka = 1.8 × 10⁻⁵ 

HENDERSON Hasselbalch equation : 
pH = pKa + log([CH₃COO⁻]/[CH₃COOH]) 

In the 1/3 STAGE of the NEUTRALIZATION
1/3 of CH₃COOH is changed to CH₃COO⁻. 
Hence, [CH₃COO⁻]/[CH₃COOH] = (1/3) / [1 - (1/3)] = 1/2 
pH = pKa + log([CH₃COO⁻]/[CH₃COOH]) 
pH = -log(1.8 × 10⁻⁵) + log(1/2) 
pH = 4.44 
 In the 2/3 stage of the neutralization : 
2/3 of CH₃COOH is changed to CH₃COO⁻. 
Hence, [CH₃COO⁻]/[CH₃COOH] = (2/3) / [1 - (2/3)] = 2 
pH = pKa + log([CH₃COO⁻]/[CH₃COOH]) 
pH = -log(1.8 × 10⁻⁵) + log(2) 
pH = 5.05   ..

10.

Which one of the two solution will scatter light, sugar solution ,or soap solution?

Answer» SUGAR SOLUTION................
11.

When mixture of 30ml of O2 and 30ml of carbon monoxide are sparkled, the volume of the gas after explosion=?

Answer» 2CO. + O2. --> 2CO2

by using GAY Lussac's law
volume of FORMED CO2 = 2 × 30ML = 60 ml

hence , the volume of gas after explosion= 60ml

hope this HELPS......
12.

Define melting an Boiling

Answer»

Hey

Melting - CONVERSION of SOLID to LIQUID.
Boiling - Conversion of Liquid to gas.

Hope HELPED

13.

How we know that this place is rich of oil and gas

Answer» HEY dear !!!!!!!

@@$by FINDING the quality of SOIL and [email protected]

ok....
14.

A vessel of volume v = 5 litre contains 1.4 g nitrogen and 0.4 g of h3

Answer» [email protected]

 

 +91-9566306857  (or)  +91-9176170648

 

Ask Questions, Get Answers

 

ASK

Home  >>  JEEMAIN and NEET  >>  Chemistry  >>  STATES of Matter: Liquids and Gases

A vessel of volume 5 litre contains 1.4g of nitrogen at temperature 1800K. Find the pressure of the gas if 30%30%of its molecules are DISSOCIATED into atoms at this temperature.

(a)2.92atm(b)1.92atm(c)3ATM(d)1atm(a)2.92atm(b)1.92atm(c)3atm(d)1atm

jeemain chemistry physical-chemistry class11 unit4 states-of-mattergas-laws medium q68

  

 

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asked Feb 20, 2014 by sharmaaparna1 
retagged Sep 17, 2014 by sharmaaparna1



1 Answer

N2⟺2NN2⟺2N

Initial Moles of N2=1.428N2=1.428

Initial Mole of 2N = 0

Mole after dissociation of N2=1.428×70100N2=1.428×70100

Moles after dissociation of 2N = 1.428×2×301001.428×2×30100

Total Mole = 1.428×70100+1.4×60100×281.428×70100+1.4×60100×28

=1.428×[130100]=1.428×[130100]

P×5=1.4×13028×100×0.0821×1800P×5=1.4×13028×100×0.0821×1800

P = 1.92 atm

15.

What is lussacs law?

Answer»

The LAW of combining volumes states that, when gases REACT together to form other gases, and when all volumes are MEASURED at the same temperature and pressure.
The ratio between the volumes of the REACTANT gases and the gaseous products can be expressed in simple whole numbers.
This is SAID as lussac's law.


This your answer..... friend
Hope it helps you alot......

16.

How many total isomers having molecular formula C4h6

Answer» 2 ISOMERS has MOLECULAR FORMULA C4H6
17.

How many isomer having molecular formula c4h6

Answer»

★ Ello ★


here is FORMULA for finding number of isomer !!

this formula is realrely you found !


now , look

to find the number of Isomers. we use formula

that is

=> 2 ⁿ - ⁴ + 1


here , n represent the number of is carbon atom present in it !!

for example ,

let's TAKE your question

C4 H6


OK !!


so on putting the value of. carbon atom ( n ) in formula we get


2 ⁴ -⁴ + 1

=> 2 ^ 0 + 1

=> 2

hence , the number of. isomer possible is 2 .


but this formula used after 4 carbon atoms !!


so , your answer is there is 2 Isomers possible !!!


hope you. get formula to find number of isomer !


any dougt. inbox me !!


hope it HELPS you dear !!


thanks

18.

Calculate the mass of 112ml hydrogen at stp

Answer» HEY here is your answer

112 cm³ = 112 ML

= 0.112 l

= 0.112/22.4 mol

= 5*10^-3 mol = 5*10^-3*2.016 g

= 0.01 g

hope it will HELP you..
19.

Difference between Polyethylene and poly vinly

Answer»

Polyethylene (PE) and polyvinylchloride (PVC) are the plastic pipes most often used for underground utility construction. ... PE is more flexible than PVC. A primarydifference is the way lengths ofpipe are joined TOGETHER and to other pipe MATERIALS. Compressed air or gases ought to not be INTRODUCED in to PVC pipes.

20.

The ratio of volume of water present in a given point

Answer»

What is the GIVEN for here
is not given

21.

Heightraised by water due to surface tensuoin

Answer»

Hey here is your ANSWER,
the surface tension CLOUD be difined as the property of the surface of a liquid that ALLOWS it to resist an external force due to the cohensive nature of the WATER molecules.
l hope it's help you.

22.

How many atoms are there in 5g of NH3?

Answer»

Here is the ANSWER to your QUESTION.

23.

State two charatersities of matter demostrated by Diffusion Brownian Motion

Answer»

Hey friend ..... :-)

Here is your answer

Diffusion:

Diffusion is nothing but the MOVEMENT of molecules from it's higher concentration to loyer concentration.

Or

The sreading out and mixing of aone substance into another substance due to the motion of its PARTICLES is CALLED diffusion.

Brownian motion :

The zig-zag movement of small particles SUSPENDED in a liquid or a gads is called Brownian motion.Brownian motion tells us that the particles are TINY nature and the particles of a matter are constantly moving.

Hoping it helps

Thanks :D

24.

Define melting point of substance ? What is the melting point of ice ?

Answer» MELTING point is the TEMPERATURE at which a SUBSTANCE becane to melt.

Melting point of ICE is 0°.
25.

An oxide of a metal which is amphoteric in nature ?? OPTIONS _ (Pb0,Pb3o4,Pb02

Answer» HEY MATE!!

I THINK PB02 is the ANSWER...
26.

Find the equilibrium constant for equilibriumHCOO– + H2O HCOOH + OH–In a solution of 0.1 M HCOONa.Ka(HCOOH) = 1.8 × 10–4

Answer»

ANSWER:

I think this answer 6

Explanation:

please MARK me BRAIN list

27.

Calculate the number of water vapour molecules present in 1ml of water vapour at STP

Answer» HOPE this'll HELP you....
28.

Atomic radius increases down the group. give reason

Answer»

This is CAUSED by the INCREASE in the number of protons and ELECTRONS across a period. One PROTON has a greater effect than one electron; THUS, electrons are pulled towards the nucleus, resulting in a smallerradius.Atomic radius increases from top to bottom within a group. This is caused by electron shielding.

29.

What types of impurity atoms are added to increase the number of conduction-band electrons in intrinsic silicon?

Answer»

The ANSWER is : Pentavelent atoms.
hope this answer HELP you.
thanks!

30.

Why does steam cause more serve burns than boling water ?

Answer»

This is COZ it has LATENT HEAT too.

31.

Repeatable entity of a crystal structure is called as

Answer»

Hii FRIEND!

The repeatable ENTITY of a CRYSTAL structure is known as the UNIT cell.

hope it helps!

32.

Why does tbe temperatur remain cinstant during the melting of ice even though heat is supplied continuously?

Answer» HOLA !!

------------------
------------------

Due to latent heat of vaporisation the ICE even on HEATING doesn't change the TEMPERATURE.

----------------------------
----------------------------

HOPE U UNDERSTAND
33.

Please solve this question. Will mark as brainliest

Answer» II: 0.2
III: 8.0×10-2
IV: 0.0
34.

Define the term uniform motion, non uniform motion

Answer»

The term uniform MOTION the BODY is at REST to remains same and non uniform motion the body is at rest as WELL as motion and that body is not STATIONARY of a same place is known as non uniform motion.

please mark the brainleast answer .

Hurrah!!!!.☺☹

35.

Different things made out of the same element

Answer» DIAMOND and COAL MADE out from CARBON
36.

Law of proportion of combination of elements

Answer»

This is the LAW which STATES that the reactants and the PRODUCT will have equal PROPORTION of combination

37.

Bhors's theory of atom

Answer»

\huge{\textbf{\underline{\underline{Bohr's\;atomic\;theory}}}}

  • An atom consists of a nucleus at the center at the center and electrons are REVOLVE around the nucleus in a definite CIRCULAR PATH known as orbit.
  • Each orbit will have definite amount of energy, therefore these levels are also known as stationary states.
  • As long as the electron revolve in the particular orbit it doesn't loss or gain the energy.
  • The angular momentum of the electron should be equal to integral multiple of \frac{h}{2 \pi}.
  • If an electron JUMPS lower energy to higher level, it absorbs the energy, similarly when the electron jumps from higher energy level to lower energy level,it emits the energy.
  • Energy released or absorbed is equal to different in the energy or 2 orbit and it is equal to frequency of the radiation.
  • \Delta E  = h \nu \\ E_2 - E_1 =  \Delta E
  • With the HELP of these postulates Bhor was able to derive the energy and radius of the orbit of hydrogen atom.
  • \gamma _n =  {n}^{2} a_o \: \:  (hydrogen \: atom)

_________________________________________

38.

Effet of contat time on dye concentration

Answer» HOPE it HELPS you
MARK me as BRAINLIEST
39.

How to calculate reaction rate with temperature kp

Answer»

During the course of the reaction shown below, reactants A and B are consumed while the CONCENTRATION of PRODUCT AB increases. The reaction RATE can be determined by measuring how FAST the concentration of A or B decreases, or by how fast the concentration of AB increases.

40.

What do you mean by saying that the molality of solution is 0.1

Answer»

molality of a SOLUTION is DEFINED as the number of MOLES of solute per kilogram of solvent.

Molality = moles of solute / kilograms of solvent

SI units of molality are: mol/kg

So in your case the molality is 0.1 mol/kg, so 0.1 moles of solute per kilogram of solvent.

Please do not confuse Molality with Molarity. Molarity is something different which TAKES into consideration the VOLUME of the solution instead of the mass.

41.

0.5faraday current flows in 1 mole NaCl. How many gms Cl will be produced

Answer»

1 FARADAY GIVES 1MOL CL. That is,35.5g. So 0.5 faraday gives 35.5/2=17.75g .I THINK this will help
.If I am wrong I am sorry

42.

A base which is not an alkali (KOH,Cu(OH)2,NH4OH)

Answer» CU{oh}2 is not SOLUBLE in WATER so it is not an ALKALI
43.

Oxidation state of nitrogen in H-N=-C

Answer»

1+(-3)+X =0
x= 2 is your ANSWER here...

44.

Define globulars protein in biochemistry

Answer»

Globular proteins play MANY biological roles, including acting as enzymes, hormones, immunoglobulins, and transport molecules. Hemoglobin is a globular PROTEIN found in red blood cells. It is made of four polypeptide CHAINS, each CONTAINING a heme group that binds and transports OXYGEN through the blood stream.

45.

What happens when we dissolve oxygen in water?

Answer»

It BECOMES more CLEAN

46.

Calculate the relative molecular masses of : (a). (NH4)2Cr2O7(b). CuSO4.5H2O(c). (NH4)2SO4(d). CH3COONa(e). Potassium chlorate

Answer» Hello Dear.

Here is the answer---

→→→→→→→→→→

For calculating the Relative Molecular mass, we need to know the atomic masses the of the ELEMENTS mentioned in the given Chemical Formula.

Thus, the atomic masses of some of  the elements which are in the question are----

Atomic Mass of NITROGEN = 14 
----------------------------Hydrogen = 1 .
------------------------------ CR = 52 
-----------------------------Oxygen = 16 
-------------------------------Copper = 64 
-------------------------------Sulphur = 32 
-----------------------------------Sodium = 23
---------------------------------Potassium = 40 
-------------------------------Chlorine = 35.5
-------------------------------CARBON = 14

Now, the Relative atomic masses of the given compounds are---- 

(a)

For Relative Molecular Mass,
 (NH₄)₂Cr₂O₇ = 2(14 + 4 × 1) + 2 × 52 + 7 × 16
                       = 2 × 18 + 104 + 112
                      = 36 + 216
                      = 252 

(b) CuSO₄.5H₂O = 64 + 32 + 16 × 4 + 5(2 × 1 + 16)
                            = 96 + 64 + 90
                            = 160 + 90
                            = 250 


(c) (NH₄)₂SO₄ = 2(14 + 4 × 1) + 32 + 4 × 16
                       = 2 × 18 + 32 + 64
                       = 36 + 96
                       = 132 

(d) CH₃COONa = 14 + 3 × 1 + 14 + 16 + 16 + 23
                          = 28 + 3 + 32 + 23
                          = 60 + 26
                          = 86

(e) Potassium Chlorate.
Chemical Formula of Potassium Chlorate = KClO₃

KClO₃ = 40 + 35.5 + 3 × 16
           = 75.5 + 48
           = 123.5


→→→→→→→→→→→

Hope it helps.

Have a Nice day.
47.

Different factor on which fluorescence depends

Answer»

Fluroescence DEPENDS UPON NATURE of the gas and the VOLTAGE supplied to it and the atomspheric pressure

48.

How 99% Na is prepared

Answer»

Solid sodium HYDROXIDE is obtained from this solution by the EVAPORATION of water. Principle — In castner-kellner method NAOH is prepared by the electrolysis of AQUEOUS solution of NaCl (Brine)

49.

Sunlight and groundwater and both renewable resources what is the difference between them?

Answer»

Their is LIMITED AMOUNT of groundwater PRESENT on the earth whereas SUNLIGHT has TREMENDOUS amount of energy.

50.

State the type of reaction represented by the following equation

Answer»

The FIRST one is a double displacement reaction because TWO ELEMENTS exchanged their places
second one is a displacement reaction because only Na occupied hydrogen's place
third one is a displacement reaction as well
fourth one is a combination reaction where two reactants combined to form a SINGLE PRODUCT