Explore topic-wise InterviewSolutions in Current Affairs.

Answer:

because in molarity volume of the SOLUTION is CONSIDERED which DEPENDS UPON temperature...volume can increase or decrease with RISE and down in temp

Answer:

A volatile substance EVAPORATES or sublimates at room TEMPERATURE or below. Volatile substances have HIGHER vapor pressures versus non-volatile substances at the same temperature. Examples of volatile substances INCLUDE alcohol, mercury, and gasoline.

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Explanation:

2kcl+3o2---->2KCLO3,,

because ch4 is SYMMETRICAL so 4 dipole moment cancels and NET dipole is ZERO

Answer:

0.52 M

Explanation:

Moles of GLUCOSE dissolved

• n = 2.82 G / (180 g/mol)
• n = (47/3000) mol

Volume of 30 g water

• V = Mass / Density
• V = 30 g / (1 g/ml)
• V = 30 ml
• V = 30 × 10^(-3) Litres

Molarity = Moles of SOLUTE / Litres of solution

= (47/3000 mol) / (30 × 10^-3 L)

= 47/90 M

= 0.52 M

EXPLANATION:

it's C, GAS,,,,,,,,,,

ANSWER:

So that we can get an EXACT rounded off VALUE. Which is EASIER to understand, and easier to SOLVE

ANSWER:

IUPAC NAME:-

PROPIONALDEHYDE PROPANAL

ANSWER:

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The EXPERIMENT:-

Take some pollen grains n take a big beaker and LET the pollen grains float on the SURFACE of WATER. This shows that particulates nature of matter exist.

Answer:

1. X SHARES the electrons with other therefore it forms covalent bonds and no ionic bond.
2. Y forms Anion as it's outer orbit contains 7 electrons.(GAINS 1 electron)
3. Z forms the Cation as it's outer orbit contains only 2 electrons.( donates 2 electrons).

Y and Z will form The Ionic bond as the contain ions Y(non-metal) and Z(metal)

Atomic NUMBER of Y= 9 (given)

According to periodic table the this element is Flourine(F) which is HIGHLY reactive and has tendency to gain electron.

Atomic number of Z= 12 (given)

According To the periodic table this element is magnesium(Mg) and it is a metal and donates 2 electrons to flourine

THEREFORE, Molecular formula will be MGF2 or YZ2

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Explanation:

Suspension particles settle if the GIVEN suspension is LEFT STILL. their particles show tyndall effect.

SOLUTION particles do not settle if the given solution is left still. Their particles do not shows tyndall effect s

ANSWER:

CONCENTRATION = MASS of SOLUTE ÷ Mass of SOLUTION ×100

Answer:

The TRUE solution is the homogenous mixture, while Colloidal solution and Suspension are the heterogeneous mixtures of two or more substances. Another difference between these three TYPES of solution is that the True solution is transparent, while the Colloidal solution is TRANSLUCENT and Suspension is OPAQUE.

Answer:

If saturated solution is HEATED it will BECOME unsaturated

If saturated solution is COOLED then some of its dissolved SOLUTE will separate in the form of solid crystals

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Answer:

The ΔH is a positive change in endothermic reactions, and NEGATIVE in heat-releasing EXOTHERMIC PROCESSES. This means that the change in enthalpy under such conditions is the heat absorbed or released by the system through a chemical reaction or by external heat TRANSFER.

Answer:

tyndall effect

Explanation:

becoz it PASSES from a small PORES

Answer:

Their outermost shell has 8 ELECTRONS . They COMPLETE their octet electronic CONFIGURATION

ANSWER:

This RESULT in MOTION of an OBJECT in same DIRECTION.

Answer:

For a strong acid-strong base titration, the equivalence point is at PH 7. The pH range of PHENOLPHTHALEIN is about 8.3 to 10.0, but the titration curve is so STEEP at the equivalence point that phenolphthalein makes a good INDICATOR. For a strong base-weak acid titration, the equivalence point is probably near pH 9.

ANSWER:

TINCTURE IODINE is a HOMOGENEOUS Mixture.

Solvent of Tincture Iodine - Alcohol

Solute of Tincture Iodine - Iodine

➡️➡️The number of moles of solute PRESENT in 1 kg of a solvent is CALLED its :

A) Molality.✔️✔️

because water is MADE up of ATOMS from different SPECIES but oxygen is made up of only oxygen atoms

Answer:

Mataji ke SONE Se Pahle a Sheela Apna PAATH Kyon NAHIN Yad kar CHUKI GI

ANSWER:

The OXIDATION state of carbon in CO is+2.

The oxidation state of oxygen in Co is -2.

Co has total oxidation state as 0.

Co=+2-2=0.

Hence Co oxidation state is zero

Answer:

The nucleus of an ATOM contains

C. Protons & Neurons

because.....

Electrons are found in shells.....

But protons(+ve) and neutrons(neutral) are ENCLOSED in the nucleus of an atom.

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EXPLANATION:

At 20 0C a WATER SOLUTION with a sodium chloride CONCENTRATION higher than 36,09 g/100 ML is a saturated solution.

ANSWER:

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Answer:

Hii FRIEND your answer is....

Explanation:

Let us take CARBON as X ..

Oxidation number of hydrogen = +1

Oxidation number of oxygen = -2

So,

=6x +12 (+1) +6 (-2)

= 6x + 12 -12

6x = 0

X=0

So the oxidation state of carbon is 0 .

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diamminesilver(I) HEXACYANOFERRATE(II)

ANSWER:

METHYL orange

Phenolphthalein

ANSWER:

A balanced chemical EQUATION is an equation for chemical reaction in which the number of atoms for each element in the reaction and the total CHARGE for the same for both the REACTANTS and products.

The chemical equation needs to be balanced so that it follows the law of conservation of mass. A balanced chemical equation occurs when the number of the DIFFERENT atoms of elements in the reactants side is equal to that of the products side.

Answer

Because some AMOUNT of water VAPOUR is already present in atmosphere (humidity) THUS preventing EVAPORATION.

Answer:

Hola MATE,

ur answer is :

When an acid reacts with a base, such a reaction is CALLED neutralization reaction.

They are called so because when they react, they become NEUTRAL that is they are neither bace nor acid.

Explanation:

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ANSWER:

ch4

ch3-ch3

ch3-ch2-ch3

ch3-ch2-ch2-ch3

ch3-ch2-ch2-ch2-ch3

ch3-ch2-ch2-ch2-ch2-ch3

Answer:

The SI base UNIT for distance is the meter, according to the International System of Units . From this base unit, using a system of equations, a number of derived QUANTITIES are obtained, such as area, VOLUME, SPEED and acceleration.

Answer:

the CHANGE that TAKES PLACE at particular intervals is called a

PERIODIC change............

ANSWER:

pseudo-order REACTION

ANSWER:

STRUCTURE of tert-alkyl HALIDE having molecular formula C5H11Br

Answer

CH4N2O + NaHCO3 + H2O = NaNO3 + NH4 + CO2 =>

9 CH4N2O + 2 NaHCO3 + 13 H2O = 2 NaNO3 + 16 NH4 + 11 CO2

Ag + Cl = AgCl =>

Ag + Cl = AgCl

Al + Cr2O3 = Al2O3 + Cr =>

2 Al + Cr2O3 = Al2O3 + 2 Cr

CuCO3 = CuO + CO2 =>

CuCO3 = CuO + CO2

C2H6 + O2 = C2H6O2 =>

C2H6 + O2 = C2H6O2

Cu + AgNO3 = Cu(NO3)2 + Ag =>

Cu + 2 AgNO3 = Cu(NO3)2 + 2 Ag

Al(OH)3 + HCl = AlCl3 + H2O =>

Al(OH)3 + 3 HCl = AlCl3 + 3 H2O

CuO + HCl = CuCl2 + OH2 =>

CuO + 2 HCl = CuCl2 + OH2

Al + CuSO4 = Cu + Al2(SO4)3 =>

2 Al + 3 CuSO4 = 3 Cu + Al2(SO4)3

Fe + Cl2 = FeCl3 =>

2 Fe + 3 Cl2 = 2 FeCl3

C12H22O11 + KNO3 = KNO2 + CO2 + H2O =>

C12H22O11 + 24 KNO3 = 24 KNO2 + 12 CO2 + 11 H2O

NH4NO3 = NH4 + NO3 =>

NH4NO3 = NH4 + NO3

NH4CNO = NH4 + CNO =>

NH4CNO = NH4 + CNO

Pb{OOCCH3}2 + K2CrO4 = PbCrO4 + K2{OOCCH3}2 =>

Pb{OOCCH3}2 + K2CrO4 = PbCrO4 + K2{OOCCH3}2

Pb{OOCCH3}2 + K2CrO4 = PbCrO4 + K{OOCCH3}2 =>

Pb{OOCCH3}2 + K2CrO4 = PbCrO4 + 2 K{OOCCH3}2

CH4 + O2 = CO2 + H2O =>

CH4 + 2 O2 = CO2 + 2 H2O

Fe + Cl2 = FeCl3 =>

2 Fe + 3 Cl2 = 2 FeCl3

Cu + O2 = Cu2O =>

4 Cu + O2 = 2 Cu2O

C + HNO3 = CO2 + NO2 + H2O =>

C + 4 HNO3 = CO2 + 4 NO2 + 2 H2O

AlBr3 + Cl = AlCl3 + Br =>

AlBr3 + 3 Cl = AlCl3 + 3 Br

Fe + Cl2 = FeCl3 =>

2 Fe + 3 Cl2 = 2 FeCl3

(NH4)2CO3 = NH3 + CO2 + H2O =>

(NH4)2CO3 = 2 NH3 + CO2 + H2O

Zn + H2O = ZnO2 + H =>

Zn + 2 H2O = ZnO2 + 4 H

N + O2 = NO =>

2 N + O2 = 2 NO

Zn + H2SO4 = ZnSO4 + H2 =>

Zn + H2SO4 = ZnSO4 + H2

P2O5 + H2O = H3PO4 =>

P2O5 + 3 H2O = 2 H3PO4

Cu + O2 = Cu2O =>

4 Cu + O2 = 2 Cu2O

C + HNO3 = CO2 + NO2 + H2O =>

C + 4 HNO3 = CO2 + 4 NO2 + 2 H2O

AlBr3 + Cl = AlCl3 + Br =>

AlBr3 + 3 Cl = AlCl3 + 3 Br

N + O2 = NO =>

2 N + O2 = 2 NO

Zn + H2O = ZnO2 + H =>

Zn + 2 H2O = ZnO2 + 4 H

Zn + FeSO4 = ZnSO4 + Fe =>

Zn + FeSO4 = ZnSO4 + Fe

NH4Cl + NAOH = NaCl + H2O + NH3 =>

NH4Cl + NaOH = NaCl + H2O + NH3

Zn + Fe2SO4 = ZnSO4 + Fe =>

Zn + Fe2SO4 = ZnSO4 + 2 Fe

NaPO4 + CaNO3 = NaNO3 + CaPO4 =>

NaPO4 + CaNO3 = NaNO3 + CaPO4

LiOH + H2SO4 = Li2SO4 + H2O =>

2 LiOH + H2SO4 = Li2SO4 + 2 H2O

Mg + HCl = MgCl + H =>

Mg + HCl = MgCl + H

H2O + SO2 = H2SO3 =>

H2O + SO2 = H2SO3

ZnO + H3PO4 = Zn3(PO4)2 + H2O =>

3 ZnO + 2 H3PO4 = Zn3(PO4)2 + 3 H2O

Fe2O3 + HCl = FeCl3 + H2O =>

Fe2O3 + 6 HCl = 2 FeCl3 + 3 H2O

Mg + H2SO4 = MgSO4 + H =>

Mg + H2SO4 = MgSO4 + 2 H

Cr(OH)3 = Cr2O3 + H2O =>

2 Cr(OH)3 = Cr2O3 + 3 H2O

Cu2O + O2 = CuO =>

2 Cu2O + O2 = 4 CuO

Mg(OH)2 + P2O5 = Mg3(PO4)2 + H2O =>

3 Mg(OH)2 + P2O5 = Mg3(PO4)2 + 3 H2O

Mg(OH)2 + P2O5 = Mg3(PO4)2 + H2O =>

3 Mg(OH)2 + P2O5 = Mg3(PO4)2 + 3 H2O

Al + HCl = AlCl3 + H2 =>

2 Al + 6 HCl = 2 AlCl3 + 3 H2

NaNO3 = NaNO2 + O2 =>

2 NaNO3 = 2 NaNO2 + O2

LIH + H2O = LiOH + H2 =>

LiH + H2O = LiOH + H2

LiH + H2O = LiOH + H2 =>

LiH + H2O = LiOH + H2

KCLO3 = KCL + O2 =>

2 KCLO3 = 2 KCL + 3 O2

<P>Answer:

740 mm

Explanation:

Given Vapour pressure of a MOIST gas at 100 °C is 750 mm and aqueous tension at that temperature is 10mm

Then vapour pressure of the dry gas is

Given vapour pressure = 750 mm at temperature = 100 degree Celsius

 Aqueous tension = 10 mm

P (moist gas) = p(dry gas) + aqueous tension

P (dry gas) = p (moist gas) – aqueous tension

P (dry gas) = 750 – 10  

P (dry gas) = 740 mm

Answer:

Answer:KINDLY REFER TO GIVEN ATTACHMENT...

EXPLANATION:

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Explanation:

2) 2.99 ×10-23...the SOL. is we KNEW,n=m(mass)÷M(molar mass=18) and also n=no. given÷avogadro's no. therefore m÷M=N÷avag.no. and we knew M=1 therefore 'm' will be equal to M÷avag.no. i.e 18÷avag.no. which will be approx. equal to OPTION C.

Answer:

18

Explanation:

.......................

Answer:

https://goo.gl/search/Give+one+example+on+HOMOGENEOUS+mixture

Heterogeneous and Homogeneous Mixtures with Examples What are some examples of homogeneous mixtures? LIQUID examples INCLUDE pure water, white VINEGAR, sugar water, corn oil, and blood plasma. Surprisingly, homogeneous mixtures are not limited to liquids, they can also be gases and solids. ... ANOTHER type of homogeneous mixture is called a colloid.

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EXPLANATION:

it could be WATER as it is the only COLOURLESS and odourless liquid

Pb

ELECTRONIC CONFIGURATION -[Kr]4d10

have EXCEPTIONAL electronic configuration DUE to achieving stable nearest noble configuration.

energy of completely filled >half filled >patially filled.

less energy, greater stability

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Answer:

Explanation:

It is called king of acid because of its DIRECT and indirect applications in manufacture of many CHEMICALS including fertilisers. SULPHURIC acid is used to clean up rust from steel rolls and soap. ... It is ideal to call sulphuric acid as king of chemicals .It is corrosive acts as GOOD dehydrant.

ANSWER:

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Answer:

we want separate mixture because we can separate the solution very GOOD solution BECOMES a true solution for two example for this is we can separate sand from the sulphur and SECOND example is we can separate sand from the water or the IMPURITIES from the water