Explore topic-wise InterviewSolutions in Current Affairs.

Answer:

Nylon is made when the appropriate monomers (the chemical building BLOCKS which make up polymers) are combined to FORM a long CHAIN via a condensation polymerisation reaction. The monomers for nylon 6-6 are adipic acid and HEXAMETHYLENE DIAMINE.

(3) (III) only

Because C7H12 STAND for Heftyne

Explanation:

But in boiled egg both of above components are in nonfluid or say soft SOLID form , so the yellow portion of egg is fixed at any part INSIDE egg and that's why the center of mass is at any defined POINT this is why boiled egg is more STABLE than normal egg.

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Answer:

Reaction of calcium with water

Calcium REACTS slowly with water. This is in contrast with magnesium, IMMEDIATELY above calcium in the PERIODIC table, which is virtually UNREACTIVE with cold water. The reaction FORMS calcium hydroxide, Ca(OH)2 and hydrogen gas (H2).........

Cow DUNG cake is the answer. It has a CALORIFIC value 6000-8000 KJ/Kg

LPG has 10000 KJ/Kg

CNG has 12500 KJ/Kg

Hydrogen has 150000 KJ/Kg

ANSWER:

HENCE, a mole of Hydrogen GAS weighs 2 gm. Now, as one mole of any gas occupies 22.4 litres of volume at STP, 1 mole of Hydrogen occupies 22.4 litres. Hence, 2 gm of Hydrogen occupies 22.4 litres of volume.

ANSWER:

The GIVEN correct answer is that the QUESTION is

the correct option is

B

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Answer:

Juice bottles

Explanation:

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Explanation:

The ELECTRONIC CONFIGURATION of the element is 2,8,2

So, it's valancy is 2 (to attain NOBLE GAS configuration)

The element is Magnesium.

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ANSWER:

SULPHURIC ACID..............

Answer:

2 ATOMS

Explanation:

In one MOLE of CO2 there is one CARBON atom.

Therefore, in two MOLES of CO2 there are 2 atoms of carbon.

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<P>ANSWER:

what is the NAME of p BLOCK

EXPLANATION:

it WOULD be a CORRECT ANSWER it will HELP you

ANSWER:

BENEDICT reagent

Explanation:

because it reacts with glucose and gives brick RED color

I don't know

Explanation:

bxjdudhdjd

ANSWER:

OPTION C is the answer MATE!!!

The REAGENT, which on reaction with GLUCOSE, confirms the presence of five hydroxyl groups in glucose is acetic anhydride, REPRESENTED by the CHEMICAL formula (CH₃CO)₂O.

• When glucose is reacted with acetic anhydride, it forms pentacetate, confirming the presence of five hydroxyl (OH) groups in it.

• It is a  known property of an anhydride to form an ester and an acid on reacting with a compound containing the hydroxyl group.

• One OH group produces only one ester (acetate) group.

• Therefore, formation of five ester or acetate MOLECULES on reaction of glucose with acetic anhydride confirms that five hyroxyl (OH) groups are present in one molecule of glucose.

• The above reaction can be represented as follows :

CHO(CHOH)₄CH₂OH (glucose) + 5(CH₃CO)₂O →CHO(CHOCOCH₃)₄CH₂OCH₃O (penta acetyl glucose / penta-acetate) + 5CH₃COOH

ANSWER:(C) 3

Explanation:

<H2>ᏗᏁᏕᏇᏋᏒ:

• ❇️ Atomicity is defined as the total NUMBER of ATOMS that constitute a MOLECULE. ... Monoatomic-composed of 1 atom e.g. He, Ne, Ar (all noble GASES are monoatomic) Diatomic-composed of 2 atoms e.g. H2 , N2 , O.

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' Nuetron ' is the UNCHARGED PARTICLE which is PRESENT in the CENTER of the NUCLEUS.

Answer:

Covalent BONDS are formed by the sharing of electrons in the outermost shell of elements.

The shared electrons belongs to both ELEMENT's outermost shell.

Carbon forms covalent bonds. these bonds have less melting and boiling points and does not CONDUCT electricity.

Ex: SINGLE bond - saturated compounds

Hydrogen

double bond - UNSATURATED compounds

Oxygen

ANSWER:

Broke-broken

On -in

A-the

Then-than

Explanation:

Answer:

The reactiom which involves similtaneoUs oxidation and reduction is called an oxidation-reduction or redox reaction.

Example:-cuo+H2 ➡cu+H20

In this reaction,oxygen is removed from copper oxide therefore it is a reduction of cuo,while hydrogen accepts oxygen to form water that means oxidation of hydrogen takes place.thus oxidation and reduction reactions occur simultaneously.

Other example of redox reaction:-

2H2s + So2 ➡ 3s + 2H2o

Mno2 +4Hcl ➡ MnCl2 + 2H2O + Cl2⬆

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Answer:

Well, because esterification is an equilibrium reaction, and water is one of the products.

Explanation:

We write the generalized esterification this way:

Acid + alcohol

⇌

Ester + water

, or more usefully SYMBOLICALLY:

R

(

C

=

O

)

O

H

+

H

O

R

'

⇌

R

(

C

=

O

)

O

R

'

+

H

2

O

For this reaction, the equilibrium is likely to lie to the left. That is, at equilibrium, the reactants are favoured. But that really does not MATTER, because esterifications are usually done under Dean Stark conditions, on which I will elaborate, which EFFECTIVELY removes the water from the equilibrium, and which DRIVES the equilibrium to the right as we face the page....

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EXPLANATION:

I THINK so 16 G of OXYGEN

EXPLANATION:

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ANSWER:

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The Enthalpy Change during the reaction

N2+3H2 -- 2NH3   is   41.5 KJ/mol

• The Enthalpy change or HEAT of reaction- It is the amount of heat released or absorbed by the reactants, to form 1 mole of product , at constant pressure.
• Bond Enthalpy- The amount of heat STORED in between atoms of a molecule.
• It is the amount of ENERGY required to break the bond between the atoms of that molecule.
• The Enthalpy change of a reaction = (SUM of Bond enthalpies of products) - (Sum of bond enthapies of reactants)
• For reaction, 1/2 N2+3/2 H2 -- NH3                                                                          {3 (389) - [1/2 (946) + 3/2 (435) ] } KJ/mol =1167 - 473 - 652.5 = 41.5 KJ/mol

It is the chemical REACTION between molecular hydrogen and ANOTHER COMPOUND or ELEMENT.

Answer:

HEY !

The number of atoms PER unit CELL of BCC is 8.

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ANSWER:

sodium chloride is formed ALONG with the evolution of carbon DIOXIDE and. water

No such ELEMENT EXISTS

EXPLANATION: FORMIC ACID is present in ANT and in bee STING

Answer:

periodic table was invented by john Dalton

it CONTAINS 118 elements

ex- hydrogen(H)

OXYGEN(O)

sulphur(S)

Answer:

2Mg + O2 = 2MgO

Explanation:

MAGNESIUM burns with a BLINDING WHITE flash in air in the presence of OXYGEN and reacts with it to GIVE magnesium oxide

Answer:

ACCORDING to heisenberg's uncertain principle for microscopic object, their position and momentum cannot find SIMULTANEOUSLY at a time.

2) in other WORDS we cannot find the position and velocity of a microscopic object simultaneously, there is always some uncertainty in the value of any one of it.

3) for this scientist given a mathematical EQUATION

dx. dv. > h/4pie. m

Where dx= is uncertainty of position,

dv=uncertainty in velocity, h is plank constant (6.6*10^-34),

Pie=3.14, m is mass of object.

Explanation:

Answer:

Use the magnet to remove the iron- Spread the iodine, salt and iron MIXTURE on a flat SURFACE. WRAP the magnet in the PAPER towel. Use the magnet to remove the iron by pulling it across the surface of the mixture. The filings STICK to the magnet while the chalk and salt are left behind. Remove the paper towel from the magnet to collect the filings.

The mixture of iodine and salt is separated by the process of sublimation. When the mixture of iodine and salt is heated, then iodine sublimates and salt is left.

ANSWER:

it is dependent on the pressure applied as well THEREFORE th QUESTION is logically fallacious.

ANSWER:

+4988is the to RIGHT answer

The GAS formed is NITRIC oxide.
On oxidation, it gives NITROGEN dioxide.
The COMPUND formed on dissolution is nitric acid.

ANSWER:

the SIMPLEST combined FORMULA of NITROGEN and phosphorus is KNO3.

ANSWER:

carbandioxide and OXYGEN

Answer:

AIR helps PLANT to TAKE carbon DIOXIDE and give out oxygen.

Answer:

if the 32 ELECTRON in a ATOM so the SHELL is 4

ANSWER:

CH3--CH--OH--CH3+OMgBr

ANSWER:

1 B

2C

Explanation:

SORRY but i have 2 answer the QUE.

ANSWER:

a

Explanation:

the the CORRECT answer is 6 to+ 2

ANSWER:

A) HYDROXYL Amine

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ANSWER:

Explanation:

3 moles HCC EXAM me PUCHA that AAJ

Answer:

Now consider tetrachloromethane (CCl4) and dichloromethane (CH2Cl2). Both molecules have polar C—Cl BONDS with the negative ends of the dipoles pointed toward the CHLORINE ATOMS. However, CCl4 does not have a dipole moment because the vector SUM of the SYMMETRICALLY arranged C—Cl bonds around carbon is zero.