Explore topic-wise InterviewSolutions in Current Affairs.

ANSWER:

Chromatography is USED in separation of

1. Ink from BLACK ink
2. PIGMENTS of blood

Answer:

the ionic CONDUCTANCE in HCL is more than acetic acid

Explanation:

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Answer:

CARBON Monoxide

Explanation:

This Gas remains the longest duration in the earths ATMOSPHERE because most of the TIME it is RELEASED by several vehicles

ANSWER:

Average residence time of carbon DIOXIDE is 30-95 YEARS, METHANE 12 years, CFC is 45 years and nitrous OXIDES is 114 years.

ANSWER:

Hydrogen

Explanation:

Generally METALS react with acids to form SALTS (NaCl) and Hydrogen (H)

Example

Zn + H2SO4 -------GIVES rise to ZnSO4 + H2

Non POLAR MOLECULES LIKE H2, O2, N2 and also nonpolar monoatomic molecules such as noble GASES like He, Ne, Se which has dispersion forces or London forces i.e, intermolecular forces and no bonding at all has the lowest intermolecular force of attraction.

Answer:

CL2 GAS, due to PRESENCE of LONDON force.

ANSWER:

HAPPY JANMASHTAMI TO ALL OF YOU.....

ANSWER:

may help

EXPLANATION:

substance is matter which has a specific COMPOSITION and specific properties.

Every pure element is a substance. Every pure compound is a substance.

Examples of substances: Iron is an element and hence is also a substance. METHANE is a compound and hence is also a substance.

Examples of non-substances: SALT water is not a substance. It is a mixture of two substances - sodium chloride and water. Its composition and therefore its properties are not fixed. Gasoline is not a substance. It is a mixture of hydrocarbons and, depending on the composition of the gasoline mixture, gasoline's properties can vary.

ANSWER:

IRON is USED for it

CORRECT

Answer:

Weight is 0.2452g

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Answer:before we heated copper sulphate CRYSTAL it's COLOUR is blue .

After hitting it turn into white

Explanation: cuso4•5h20---------->cuso4 +5h20

The water DROPLETS is FORMED because the water is RELEASED in reaction .

Answer:

It is called as Vark , is super FINE filigure FOIL sheet of pure metals, USED to decorate SWEETS and food to make those look more appetising.

The silver is edible, though flavorless.

the raw MATERIALS for RAYON is WOODPULP whereas for nylon it is water CO2

Answer:

a. The solid or liquid PHASE of a chromatography SYSTEM on which the MATERIAL are to be seperated or selectively absorbed is known as staionary phase.

b. When no more solute can be DISSOLVED in a SOLUTION at a given temperature, it is called a saturated solution.

Or

At any particular temperature, a solution that had dissolved asa much solute as it capable of dissolving, is said to be a saturated solution.

ANSWER:

i thinknits CLONING DONE for DOLLY SHEEPS

Answer:

hey mate :

sodium HYDROXIDE( base) + hydrogen CHLORIDE( ACID)=== Sodium chloride ( salt)+ water.

thank you !!!!!

ANSWER:

Usually this is a system of two immiscible solvents, called two phases, with a polar (usually water) phase and a nonpolar phase (ORGANIC SOLVENT like diethyl ether, MTBE (methyl term-butyl ether), dichloromethane, ethyl acetate).

ANSWER:

h2so4+hcooh_co+h2so4.h2o

Explanation:

Sulfuric acid react with FORMIC acid to produce carbon MONOXIDE and hydrate sulfuric acid.

It has been shown that there is a very highly SIGNIFICANT correlation COEFFICIENT between the WORK function of metals and the ACTIVATION energy for OXIDATION .

ANSWER:

Both salts are soluble, but the product of their REACTION, SILVER chloride AgCl is a SALT that is insoluble in water, which precipitates after reaction in a white curd-like sediment: NaCl + AgNO₃ = NaNO₃ + AgCl.

Explanation:

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Answer:

10.58

EXPLANATION:

r1=0.529×n^2/z=0.529×4^2=0.529×16=0.8464

r2=0.529×n^2/z=0.529×6^2=0.529×36=1.9044

therefore,

r2-r1=1.9044-0.8464

=10.58A

TOTAL PRESSURE = 0.4 BAR + 1.4 bar = 1.8 bar.

ANSWER:

12.6cm is the CORRECT answer for this QUESTION

Answer:

So, each UNIT cell has 4 ATOMS of each Na+ and Cl-. Hence there are total 4 molecules of NaCl in each unit cell. As the MASS of -Avogadro number of molecules- of NaCl is 58.5g. So, 2.575×10^21 unit CELLS contains 1gm of NaCl molecules

Explanation:

hole this answer HELP you

Answer:

change DIRECTLY into VAPOUR when HEATED, typically forming a solid deposit again on COOLING.

ANSWER:

EXPLANATION:

Condenser are used in a distillation process because condenser helps to get BACK liquid from VAPOUR by cooling the temperature

Condensers are used in distillation to COOL the hot vapors, condensing them into liquid for separating two substances

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Answer:

Phosphorus is insoluble in water. Phosphorus react vigorously with Oxygen present in AIR. So it is kept in water as in water hydrogen content is GREATER than oxygen. As it is dangerously REACTIVE in air, it should be handle with forceps, as contact with skin may CAUSE severe BURNS..

ANSWER:

(C6H6O·CH2OH)n

Explanation:

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Answer:

Plaster of Paris in contact with moisture (water) changes to solid hard mass, gypsum. THEREFORE, it gets wasted. HENCE it should be stored in moisture proof CONTAINERS

The ratio of weights of OXYGEN = 2 : 3

• Given , formation of SO2 and SO3
• MASS of Sulphur = 10 kg
• Moles of Sulphur = 10 * 10^3 g /32 g/mol = 0.3125 * 10^3 moles
• Now the reactions involved are:                                                                S + O2 ⇒ SO2    ,     2S + 3 O2 ⇒ 2SO3
• Now ,it is clear 1 mole of S requires 1 mole of O2 to form 1 mole SO2
• Also, 2 moles of S requires 3 moles of O2 to form 2 moles of SO3
• So,0.3125 * 10 ^3 moles of Sulphur combines with 0.3125 * 10^3 moles of Oxygen to from SO2.
• Also, 0.3125 * 10 ^3 moles of S combines with 0.3125 * 10^3 * 3/2 moles of Oxygen to form SO3
• We KNOW, 1 mole of O2 = 32 GM of O2
• 0.3125 * 10 ^3 mole of O2 = 10 * 10^3 gm of O2
• 0.3125 * 3/2 * 10^3 mole of O2 = 15 * 10^3 gm of O2
• Therfore mass ratio of SO2 : SO3 = 10 : 15 = 2:3.

Answer:

Your answer is here!

EXPLANATION:

properties of metal which makes it suitable for using it as utensils.

▪ it is good conductor of heat .

▪It easily gets heated .

▪ It doesn't TAKE a long TIME to get heated.

Hope this HELPS you.

Please say thanks on my answer if it's help full to you.

Answer:

15.05%

Explanation:

We know that in pure iron oxide(FEO),iron and oxygen are present in the ratio 1: 1

In wustite (Fe0.93O1.00),some of the Fe2+ ions are missing and the number of Fe2+ ions present in 0.93 instead of 1.

From here we find the number of missing Fe2+ ions

⇒1.0−0.93=0.07

Since each Fe2+ ion CARRIES two units of POSITIVE charge so the total positiv charge missing

⇒0.07×2=0.14

For maintenance of electrical neutrality this much (ie 0.14) positive charge has to be compensated by the presence of FE3+ ions.

If one Fe3+ ion replaces one Fe2+ ion then there is an increase of one UNIT positive charge.So to compensate 0.14 unit positive charge we require 0.14 Fe3+ ions to replace Fe2+ ion.

So,100Fe2+ ions have Fe3+ ions=0.140.93×100=15.05%

Answer:

hey MATE...

here is your answer..

carbon disulphide is used to separate a mixture of sulphur and salt . sulphur is soluble in carbon disulphide and salt is INSOLUBLE in it....

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Explanation:

In Lanthanoids from left to right there is a gradually decreasing

atomic size is known as Lanthanoid CONTRACTION. This is due to

poor sheilding EFFECT of F orbital.

consequences

1. The seperation of lanthonids very difficult.
2. The FOLLOWING pair of elements have similar atomic sizes

Ex: Zr and Hf, Nb and Ta, Mo and W

Hope it is understand for everyone

ANSWER:

C2H6+ O2--------2CO2+ 3H2O

Answer:

Simple Crystallisation

This is the most common method used to purify ORGANIC solids. ...

Explanation:

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ANSWER:

each of more than one hundred SUBSTANCES that cannot be chemically interconverted or broken down into simpler substances and are primary CONSTITUENTS of MATTER. Each ELEMENT is distinguished by its atomic number, i.e. the number of protons in the nuclei of its atoms.

Answer:

• Answer:A solution is always TRANSPARENT, light passes through with no scattering from solute PARTICLES which are molecule in size. The solution is homogeneous and does not settle out. A solution cannot be filtered but can be separated using the process of distillation.

• Answer:A solution is always transparent, light passes through with no scattering from solute particles which are molecule in size. The solution is homogeneous and does not settle out. A solution cannot be filtered but can be separated using the process of distillation.A suspension is cloudy and heterogeneous. The particles are larger than 10,000 Angstroms which ALLOWS them to be filtered. If a suspension is allowed to stand the particles will separate out.

• Answer:A solution is always transparent, light passes through with no scattering from solute particles which are molecule in size. The solution is homogeneous and does not settle out. A solution cannot be filtered but can be separated using the process of distillation.A suspension is cloudy and heterogeneous. The particles are larger than 10,000 Angstroms which allows them to be filtered. If a suspension is allowed to stand the particles will separate out.A colloid is intermediate between a solution and a suspension. While a suspension will separate out a colloid will not. Colloids can be distinguished from solutions using the Tyndall effect. Light passing through a colloidal dispersion, such as SMOKY or foggy air, will be reflected by the larger particles and the light beam will be visible. A hydrocolloid can simply be DEFINED as a substance that forms a gel when it comes in contact with water. Such substances include both polysaccharides and proteins .

Answer:

FISSION is the DIVISION of ONE ATOM into two, and fusion is the combination of two lighter atoms into a larger one and Fission reaction does not normally occur in nature. Fusion occurs in stars, such as the SUN.

ANSWER:

FERRIC sulphate is FORMED with the release of hydrogen

ANSWER:

They GET OXIDIZED

ANSWER:

CS2 +O2 equal to CO2+ SO2

ANSWER:

TRUE

....

..

.....is your answer

Answer:

NO

Explanation:

FREEZING of water is the case where temperature is decreased.

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Particles GAIN that REQUIRED ENERGY from the heat energy you're provoding it to change the STATE.

The OXIDATION no of N is +3

EXPLANATION:

LITHIUM ALUMINIUM HYDRIDE

Answer: An ORGANIC COMPOUND which is USED for MAKING a household PLASTIC material is BAKELITE.

Hope it’s helpful

Explanation:

is because of the shielding EFFECT that the IONIZATION energy decreases from top to bottom within a GROUP. From this trend, CESIUM is said to have the lowest ionization energy and Fluorine is said to have the highest ionization energy (with the exception of Helium and Neon