Explore topic-wise InterviewSolutions in Current Affairs.

EXPLANATION:

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Answer:

Saturated, UNSATURATED and supersaturated refer to three DIFFERENT CONDITIONS of a solution. A saturated solution contains the MAXIMUM AMOUNT of solute that will dissolve at that temperature. ... An unsaturated solution contains less than the maximum amount of solute that can be dissolved at that temperature.

Answer:

Distillation is a process USED to separate liquids with BOILING points which COMPRISES of gaps around 50 degrees at least.

Fractional Distillation is a process used to separate liquids with closer boiling points. The process doesn't have to be REPEATED to obtain pure components.

Magnetic moments of M2+ ions (DIVALENT CATIONS ) of 3d-series in the DECREASING order is : Zn2+>Sc2+=Cu2+>Ti2+=Ni2+>V2+=Co2+>Cr2+=Fe2+>MN2+

Answer:

I THINK option A

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rapid chemical COMBINATION of a SUBSTANCE with oxygen, involving the production of HEAT and LIGHT.

ANSWER:

CHEMICAL Formula of 6th MEMBER of alkyne GROUP- C6H10 i.e. Hexyne

Chemical formula of 15TH member of alcohol series​- C15H31OH i.e. Pentadecanol

Explanation:

Answer:

Explanation:

The BOND FORMED between two atoms by sharing a pair of ELECTRONS, provided entirely by one of the combining atoms but shared by both is called a coordinate bond. It is REPRESENTED by an arrow starting from the donor atoms and ending in the acceptor atom.

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Answer:

So, as you move down a group on the periodic table, the ELECTRONEGATIVITY of an element DECREASES because the increased NUMBER of energy levels puts the outer electrons very FAR AWAY from the pull of the nucleus. Electronegativity increases as you move from left to right across a period on the periodic table.

Explanation:

Answer:

2)

EXPLANATION:

because aqueous SOLUTION of acid conduct ELECTRICITY.

Answer:

4FeS2 + 11O2 → 2FE2O3 + 8SO2

Answer:

Because the ALCOHOL in it is FLAMMABLE highly.

Explanation:

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ANSWER:

we can CALCULATE the MASS as 772

EXPLANATION:

The temperature remains constant during the change of STATE because the heat energy which is supplied to change the state of MATTER is USED in breaking the INTERMOLECULAR forces and other attractive forces. Hence the temperature remains constant as all the heat is used up and no external heat is released or absorbed.

Explanation:

Physical changes are changes AFFECTING the form of a chemical substance, but not its chemical composition.Examples of physical properties INCLUDE MELTING, transition to a gas, change of strength, change of durability.

in the common SALT the CONCENTRATION becomes because when we MIXED the WATER then it will become salty

Compound MEASURES

• Compound Measures. A Compound MEASUREMENT is a measurement that USES more than one quantity.
• Density. Density is CALCULATED by mass ÷ volume.
• Speed. Speed is measured using the formula DISTANCE ÷ time
• Rates of Pay.

ANSWER:

CALCIUM hydrochloride

Explanation:

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ANSWER:

صحیح اختیار ایک

کیا کسی نے مجھے وضاحت دے سکتے ہیں ؟

Explanation:

صحیح اختیار ایک

کیا کسی نے مجھے وضاحت دے سکتے ہیں ؟

ANSWER:

YE LE MERA no.+91 96959 10610

I think u correct answer is (a).

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ANSWER:

SORRY.... PICTURE is not CLEARLY..........

Calculate the TOTAL MASS of 1 mole of ELECTRONS is (mass of 1electron=9.1*10^-31kg) mass of 1 electron 9.1 X 10¯³¹ KG.

ANSWER:

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Answer:

MOMENT of FORCE through the alimentary canal is actually a pulling force if we take the BAND and stomach and it is looking for equity REFERENCE as mouth

ANSWER:

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GENERAL KNOWLEDGE........

ALUMINUM, SODIUM, MAGNESIUM

ANSWER:

,

EXPLANATION:

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ANSWER:

density of solution = 1.19 GLML  

MOLARITY =  

MolarmassofHCl

1.19

​  

×1000×38%

=  

36.5

1.19

​  

×1000×  

100

38

​  

12.389m

mole of HCl required to make 10 L of all 0.1MHCl=10×0.1=1mole

12.389×v=1

v=  

12.389

1

​  

=80.7ml

Explanation:

Explanation:

Empirical formula of a COMPOUND MAY be defined as the formula which gives the simplest WHOLE number ratio of the atoms of various elements PRESENT in one molecule of the compound.

Form the AVAILABLE data Percentage of iron = 69.9

Percentage of oxygen= 30.1 Total percentage of iron & oxygen= 69.9+39.1= 100%

The empirical formula of the compound = Fe²O³

Explanation:

sulphur permanganate and POTASSIUM permanganate belong to the GASEOUS and AQUATIC GROUPS so moles would be 133^23/45(34(

ANSWER:

a. COLOURED CHEMICALS or SUBSTANCES

Explanation:

In the REACTION MnO2 + 4HCL -> MnCl2 + Cl2 + 2H2O , Cl (chlorine) is the substance which is OXIDIZED from the HCL, and it is the reducing agent for the MnO2 as well. As Cl is the oxidized substance in HCl, THUS it is the oxidizing agent in the reaction

by USING the FORMULA of MASS

Answer:

CACO3 + 2HCl ⇨ CACL2 + CO2 + H2O

Explanation:

When calcium carbonate reacts with hydrochloric ACID, it produces carbon dioxide gas with effervescence. Carbon dioxide used as fire extinguisher. Hence, it extinguishes a burning candle. THEREFORE, the metal compound A is calcium carbonate.....as per my thinking...

ANSWER:

VAPORIZATION is the process in which LIQUID is heated up and becomes VAPOUR.

....For example-liquid when heated up becomes water vapour....

Explanation:

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Answer:

hwhwjw bwbeb3n 3 ejene where queue eu3ubebe E evehehe ebejewhhw wbwhwj wbwhw whew w

Explanation:

bhabq q qkal we w whwjw whwjwkw EHE ebeje ehehne HEHEHE e sbewbbwhe e

Answer:

HELIUM gas = 625 ml

Explanation:

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ANSWER:

yes

Explanation:

When iron filings and sulphur powder are MIXED and heated they undergo a CHEMICAL reaction and FORM ferrous sulphide (FeS). It is a new substance which has properties entirely DIFFERENT from Fe and S. Therefore, heating of mixture of iron and sulphur powder is a chemical change

ANSWER:

Silkworm moth

Silkworm moth, (Bombyx mori), lepidopteran whose caterpillar has been used in silk PRODUCTION (sericulture) for thousands of years. Although NATIVE to China, the silkworm has been introduced throughout the WORLD and has undergone complete domestication, with the species no longer being found in the wild.

Answer:

answer is 7.3125

Explanation:

GIVEN;

MOLARITY=0.50 M back.

VOLUME=0.25 l

to CALCULATE;

mass of nacl in solution.

proof;

molarity= no.of moles \ volume of solution.

no.of moles=0.5 m *0.25 l.

no.of moles =0.125 moles.

we know that,no of moles = given mass\molecular mass.

molecular mass of nacl =23+35.5=58.5 g.

sub formula,

0.125 = given mass\58.5 g.

given mass =0.124*58.5.

given mass=7.3125.

Answer:

1 MOLE = 6.022 x 1023 molecules. Therefore, 0.1 MOLES = 0.1 x 6.022 x 1023. = 6.022 x 1022 molecules. Since 1 molecule of SULPHUR contains 8 atoms.

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Answer:

LITHIUM BERYLLIUM Neon

Sodium MAGNESIUM Argon

Potassium Calcium Krypton

Rubidium STRONTIUM XENON

ANSWER:

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Answer:

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ANSWER:

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Answer:

• A chemical FORMULA is a way of presenting information about the chemical proportions of atoms that CONSTITUTE a particular chemical compound or molecule, USING chemical element symbols, NUMBERS, and sometimes also other symbols, such as parentheses, dashes, brackets, commas and plus and minus signs
• A chemical formula identifies each constituent element by its chemical symbol and indicates the proportionate number of atoms of each element. In empirical formulae, these proportions begin with a key element and then assign numbers of atoms of the other elements in the compound, by ratios to the key element.
• Example - Salt - NaCl , ethanol C2H6O because the molecule of ethanol contains TWO Carbon, 6 Hydrogen and 1 Oxygen atom

Explanation:

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