Explore topic-wise InterviewSolutions in Current Affairs.

Answer:

if we REACT but 1 ENE by BR2 h2o we get BUTAN 2 ol due to markonikov addition and but 2 ene also gives butan 2 ol

both the compounds give butane when reacted with NANH2

Answer:

the increase in the average temperature of the earth is called global warming .

Explanation:

it has taken PLACE because of the enhanced greenhouse effect and some other reasons- # burning of fossil fuels #rearing of farm animals ##use of choloroflurocarbons in refrigerators and air conditioners , the consequences are (1) rise in sea level (2) earth BECOMES very hot (3) meltng of huge polar CAPS (4) it has affected the RAINFALL and weather patterns

Answer:

the CURRENT is usually INTRODUCED from an external source and the anode is the positive ELECTRODE and cathode is a negative electrode. The cathode is the electrode where the ELECTROCHEMICAL reduction reaction occurs. The anode is that where the electrochemical OXIDATION reaction occurs.

ANSWER:

this is MOLECULAR formula.....

iupac names are GIVEN to structural formula

Answer:

GIVEN:

Reaction of Hydrogen and Nitrogen is given to form Ammonia.

4 moles of hydrogen reacts with 20 moles of hydrogen.

To find:

Moles of ammonia PRODUCED.

Concept:

A reaction forming products is governed according to the amount of limiting REAGENT PRESENT in the system.

Calculation:

So we can say that in ideal conditions; 1 mole of Nitrogen react with 3 mole of hydrogen to form 2 moles of Ammonia.

So, here nitrogen is the limiting reagent and hydrogen is the excess reagent.

Because as per Unitary method,

4 moles of nitrogen shall react with 12 moles of hydrogen (but 20 moles have been provided).

So moles of Ammonia produced

= 4 × 2

= 8 moles.

Amount (in gm) of ammonia produced

= 8 × 17

= 136 gm.

So final answer :

ANSWER:

GLOBAL warming takes place when EXCESS carbon dioxide takes place in our ATMOSPHERE

ANSWER:

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EXPLANATION:

volume is a quantity of three dimensional space occupied by solid, liquid, or gas.

hope help full

Answer:

a GAS EXERTS PRESSURE on the surroundings if the FAVOURABLE the CONDITION is the more the gas will exerted pressure

ANSWER:

sorrrry i DONT know

Explanation:

Mass PER unit VOLUME is known as Density. It's SI unit is kg/m^3.

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Answer:Oxidation means the increase in oxidation number over SPECIES

example:- o+2e- =o2-

REDUCTION is defined as the reduction in oxidation number over species

example :- na -E- = na+

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ANSWER:

LIMITING Reagent Concept

N2 is Limiting Reagent

1 se 2 MOLE NH3

Then 4 mole se

8 mole NH3

Thanks for Reading

Answer:

5

Explanation:

PH= -log^Pka

I HOPE it MAY HELP you

ANSWER:

HLLW ❗❗

Explanation:

Metals are lustrous, malleable, ductile, good CONDUCTORS of heat and electricity. Other properties include: State: Metals are solids at ROOM temperature with the exception of mercury, which is liquid at room temperature (GALLIUM is liquid on hot days).

REFER your QUESTION in chrome

EXPLANATION:

you should FOLLOW me from your COMPUTER

Answer:

Ionization energy increases in a PERIOD and decreases down the group. In a period as there is SUCCESSIVE addition of ELECTRON atomic size decreases so more energy is required to remove an electron THUS IE increase.

[FE(III)CN6]3-
EAN=23+12=35

Answer:

PHYSICAL change is DEFINED as the change that occurs due to the change in the physical satate of an OBJECT WITHOUT changi in their CHEMICAL state . ie from solid to liquid or liquid to gas or gas to solid.eg.melting of ice.

ANSWER:

Na is UNDERGOING reduction

Explanation:

Because HYDROGEN is being added to sodium and there no substance is undergoing oxidation

ANSWER:

HYDROGEN is the ELEMENT which was LEAD to CONTROVERSIAL

Answer:

As of 2018, the majority of HYDROGEN (∼95%) is produced from fossil fuels by STEAM reforming of natural gas, partial oxidation of methane and coal gasification. Other methods of hydrogen production include BIOMASS gasification and electrolysis of water. ... Pure hydrogen is not GENERALLY found in large quantities on EARTH.

Answer:

(a) RED Phosphorus/Iodine

Explanation:

In GENERAL, using P/X₂ or PX₃ or PX₅ with an alcohol gives the respective alkyl HALIDE (where X stands for any halogen). So, using red phosphorus and iodine will YIELD alkyl halide.

Note: ZnCl₂/HCl is called Lucas reagent which produces alkyl chloride when reacted with alcohol. But here, you WANT alkyl iodide and using HI with ZnCl₂ will not produce alkyl iodide.

Thanks!

ANSWER:

-10.4 KCAL is the AMSWER

ANSWER:

fe2o3 is ferous oxide and FE3O4 is FERROUS [2] oxide

Answer:

carbon has 4 valency.

nitrogen has 5 valency

ocygen has 6 valency

fluorine has 1 valency

Explanation:

valencie vareies to each GROUP

Ionic BONDS are formed when electrons move from METAL to a non metal for EXAMPLE the formation of NaCl Here SODIUM is a metal whereas chlorine is non metal which results in the formation of ionic bonds between them

ANSWER:

AL2O3 + 6HCL --------------  2AlCl3 + 3H2O​

Explanation:

AERONAUTICS is the science or art involved with the study, design, and manufacturing of air flight capable machines, and the techniques of operating AIRCRAFT and rockets within the atmosphere. The BRITISH Royal Aeronautical Society identifies the aspects of "aeronautical Art, Science and Engineering" and "the profession of Aeronautics (which expression includes Astronautics)." [1]

Answer:

Graham's law of DIFFUSION. About Transcript. Graham's law of diffusion (also KNOWN as Graham's law of effusion) states that the rate of effusion a gas is inversely proportional to the SQUARE root of its molar mass. Often, it is used to compare the effusion rates of TWO gases.

Answer:

answer is F

Explanation:

FLORINE has the highest elecronegativity in the periodic table. So, O, N and F, the highest electronegative element is F.Apr 10, 2018

ANSWER:

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ANSWER:

the answer to this QUESTION is OPTION C THREE

ANSWER:

B is the answer i THINK so

ANSWER:

It's molar mass is found with addition of the elements' MOLECULAR mass. SODIUM is 22.9897g/mole, NITROGEN is 14.0057g/mole, OXYGEN is 15.999g/mole. So, 22.9897 + 14.0057 + ( 15.999 x 3 'because of three oxygen' ) = 84.9924g/mole of Sodium Nitrate (NaNO3)

Answer:

Coppell v CO d SHH by DM BFF dl c Co d dl c dl judo dl by do

Explanation:

given ,

f=20cm

v=30cm

H'= S cm

object DISTANCE = -60CM ( using 1/f = 1/v- 1/u)

HELLO!

Check out the attachment for the SOLUTION. USE concentrated SULPHURIC acid in the first reaction and ACIDIFIED potassium permanganate or potassium dichromate in the SECOND reaction.

Thanks!

Answer:

A DISPROPORTIONATION reaction is when a multiatomic species whose PERTINENT element has a specific oxidation state gets OXIDIZED and reduced in two separate half-reactions, yielding two other PRODUCTS containing the same pertinent element. A CONVENIENT example is Mn2O3 becoming Mn2+ and MnO2 .

ANSWER:

those which is REDUCED in REACTION is CATHOD and those who oxidised in reaction is ANODE

Answer:

Sonarity is the ABILITY of a METAL to produce a RESONANT SOUND

Answer:

127 u or 127 G of IODINE contains AVAGADRO number of atoms that is 6.023×1023 .so that for 2 54 u or 254 g contai62×6.023×1023 = 12.046 ×1023 atlms

Answer:

The BOHR atomic model theory made correct predictions for smaller sized atoms like hydrogen, but poor spectral predictions are obtained when larger atoms are considered. It failed to explain the ZEEMAN EFFECT when the spectral line is split into several COMPONENTS in the presence of a magnetic field.

Answer:

According to law of ACTIVE mass

Explanation:

CONSIDER the reaction

A + B -------> C + D

Initial moles of A and B are one

Initial moles of C and D are zero

At equilibrium moles of A and B are 1 — a

At equilibrium moles of C and D are a

Equilibrium CONCENTRATION of A is 1—a/V

Equilibrium concentration of B is 1—a/V

Equilibrium concentration of C is a/V

Equilibrium concentration of D is a/V

according to law

K = [C][D]/[A][B]

= a²/(a—1)²

at equilibrium 1-a ≈ 1

therefore

K = a²C

a= √K/C

ANSWER:

From the formula XCl2 we see that one atom of X combines with 2 atoms of Cl this means X has a valency of 2 just like MAGNESIUM. (Remember the formula of magnesium chloride is MgCl2).

Na has valency 1 (NaCl)

Al has valency 3 (AlCl3)

Si has valency 4 (SiCl4)

Answer:

please WRITTEN in ENGLISH ya HINDI

Answer:

The FIRST or second

Explanation:

The element X forms a chloride with a high melting point. this shows that the compound is an IONIC bond.

If the compound is ionic then the  Element X musty be A METAL as, ionic compounds are the combination of a cation and an Anion.

If the resulting compound is solid thern it must be a salt. hence we can SAY that, X must belong to the alkali metals or alkali non metals

GG

ANSWER:

CH4+2O2---->CO2+2H2O

ANSWER:

Hardness can be removed by ADDING SODIUM carbonate (washing soda) or by passing the water through an ion-exchange column. Hardness in water is CAUSED by dissolved magnesium ions and calcium ions.