Explore topic-wise InterviewSolutions in Current Affairs.

Answer:

II-A elements have generally 2 ELECTRONS at outermost orbit and are little stable than I-A METAL. Hence, ALKALINE earth elements have more enthalpies GREATER than alkaline elements.

Explanation:

Answer:

this is because It is a POWERFUL OXIDIZING AGENT and the nascent oxygen formed oxidises HYDROGEN to water.

Explanation:

ANSWER:

SILVER the SYMBOL of AG

ANSWER:

YES it is the your CORRECT answer

Explanation:

Hello...

➡️ Carbon and Hydrogen is right answer.

Not all compounds that CONTAIN carbon are organic. An EXAMPLE of an inorganic carbon COMPOUND is carbon dioxide. All organics contain both carbon and hydrogen. A quasi-exception would be carbon TETRACHLORIDE, which is an organic SOLVENT. It's not actually organic, but it is nonpolar so it dissolves organic molecules.

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Answer:

ya off course

ice has

heavier than WATER

where do VAN DER WALLS force exerted

is melting of IRON is endothermic

Answer:

Explanation:

•Dmitri Mendeleev is credited for the Modern periodic table.

•The modxern periodic table has 18 VERTICAL columns known as Groups and seven horizontal ROWS known as periods.

•The elements with similar outer shell ,electronic configurations in their atoms are same column called GROUP.

•The modern periodic law is ;-

The properties of the elements are periodic FUNCTIONS of their ATOMIC numbers.

I.e Physical and chemicao properties of elements are the periodic functions of the electric configurations of their atoms.

Mendeleefs periodic law is :-

The properties of elements are the periodic functions of their atomic weights.

Answer:

A blue, crystalline COMPOUND of copper sulfate. Blue vitriol is soluble in water, and is a very important INDUSTRIAL salt of copper. It is used in insecticides and germicides, in ELECTROLYTES for BATTERIES, and in electroplating baths. Chemical formula: CuSO4.

Answer:

Many properties of Be match with Al (including ELECTRONEGATIVITY and size) because of diagonal RELATIONSHIP. They LIE on a diagonal in the PERIODIC table. Li and Mg also share diagonal relationship. Check the table, you will see the trend.

ANSWER:

RETARDATION MEANS the NEGATIVE of ACCELERATION .

Explanation:

a.)

In the exact answer we GET 5 SIGNIFICANT figures but we want THREE significant figure in the answer.

b.) 319.5 g - 20460 g - 0.0639 g - 45.642 g- 4.173 g

In the exact answer we get 9 significant figures but we want five significant figure in the answer.

HERE IS YOUR ANS ✨

DENSITY = MASS/VOLUME..

Explanation:

Chemical FORMULA of water is H20

water is ONE of one main component which is HIGHLY needed to all LIVING organisms

hope it HELPS u......❣️

EXPLANATION:

PROTIUM is the most COMMON ISOTOPE of HYDROGEN

EXPLANATION:

♥ They are also KNOWN as inert gases

♥configuration is np² np6

♥ ahelium , neon , ARGON , crypton , xenon and radon COMES under NOBLE gas group

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Answer:

COLLAGEN is the most important protein in HUMAN BODY......

Answer:

An element is a substance WHOSE atoms all have the same NUMBER of PROTONS

Milk contains LACTIC acid.

So milk is slightly acidic with PH value of AROUND 6.5 to 6.7

Hope it will help you..

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A molecule that can be bonded to other IDENTICAL molecules to FORM a POLYMER

Answer:

it is ETHENE

a hydrocarbon

and it's also called ethylene gas.

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Answer:

Aryl HALIDES are less reactive towards nucleophilic substitution reaction due to SEVERAL reasons. whereas alkyl halides undergo nucleophilic substitution easily. ... Whereas in Alkyl halides relatively large difference in electronegativity of carbon and halogen is recorded. THUS halogen is easily replaced by nucleophile.

EXPLANATION:

I KNOW the ANSWER of first then CHANGE of charge

ANSWER:

A pure substance cannot be sparated into any other kinds of MATTER , while mixture is a COMBINATION of TWO or more pure substance

In this CONDITION a solid changes into liquid. On heating the particles of a liquid GETS more KINETIC energy and they start moving more rapidly. The INCREASE in TEMPERATURE increases the kinetic energy of particles and inter-space between them increases.

Answer:

) An electron can revolve around the nucleus in certain fixed ORBITS of definite energy without emission of any radiant energy. Such orbits are called stationary orbits.

2) An electron can MAKE a transition from a stationary STATE of higher energy

E

2

to a state of lower energy

E

1

and in doing so, it EMITS a single photon of frequency,

ν

=

E

2

−

E

1

h

where

h

is the Planck's constant.

Conversely, on absorbing an energy,

E

2

−

E

1

when the electron is at energy

E

1

, the electron can make a transition from

E

1

to

E

2

.

3) Only those orbits are allowed for which the angular momentum of the electron is an INTEGRAL multiple of

h

2

π

,

Thus,

L

=

n

h

2

π

where

n

=

0

,

1

,

2

,

...

.

.

NEUTRON and PROTON both

HOPE it HELPS u☺☺

ANSWER:

Photosynthesis is an endothermic reaction because sunlight energy is ABSORBED during the PROCESS of photosynthesis by the plants.

And our definition SAYS that when in a reaction heat is absorbed it is termed as endothermic reaction.

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HYDROXIDE is the COMPOUND of OXYGEN and HYDROGEN, that is WATER.

ANSWER:

n=5.6/60×6.023×10^-23×4 =

ANSWER:-

Any alkane CONTAINING a NITRO GROUP is called NITROALKANE.

Answer:

In GENERAL, hydroxyl ion (in the form of MG(OH)2 and Al(OH)3; carbonate/bicarbonate ion (in the form of CaCO3/Ca(HCO3)2); and silicate ion (in the form of Mg2Si3O8) are commonly used either in a SINGLE substance or their MIXTURES to control hydrogen ions (H+) generated in the stomach

EXPLANATION:

We heat OXALIC acid during titration because this reaction happens only in certain temperature. If not heated your light PINK titrated solution turns brown soon .HOPE this would be helpful.

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Explanation:

Water is a compound not a mixture because Its compounds are always formed in definite ratio of constituent elements.

when TWO atoms of Hydrogen and one ATOM of Oxygen react TOGETHER, they form one MOLECULE of Water.

Answer:

Hello

Its VALUE depends on the NATURE of the LIQUID. Generally surface tension of liquid decreases with increase intemperature. it is DUE to increase in kinetic ENERGY of liquid molecules

EXPLANATION:

A neutral gas other than oxygen is FORMED at the anode during ELECTROLYSIS of fused and allumina is Carbon monoxide.

Answer: Plaster of paris is Calcium sulphate hemihydrate . [CaSO4.1/2 H2O]

Please Note that it is not possible to have a half a MOLECULE of water.

The Formula actual MEANS that TWO MOLECULES ( or two formula units ) of CaSO4 share one moecule of water so that the effective water of crystallisation for one CaSO4 unit comes to half molecule of water.

The formula of plaster of paris can be written as 2CaSO4.H2O

2(CaSO4.2H2O)  -----> 2CaSO4.H20  + 3 H2O on heating

ANSWER BY prmkulk1978. PLEASE MARK AS BRAINLIEST ANSWER FOR THIS USER'S AMAZING ANSWER, DON'T DO IT FOR ME. THX!

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Explanation:

So much graphite required for the electron its electrolytic process because The ATOMIC structure of graphite RESULTS in a LARGE NUMBER of electrons not being bonded, allowing them to migrate between the layers of graphite. Hope this HELPS you.

ANSWER:

LATENT HEAT of FISSION

The mass of 1 MOLECULE of a SUBSTANCE is 4.65×10^23.

4.65×10^23×842

=3.9153E+26

I don't KNOW correct or incorrect.

I HOPE you understand.

ANSWER:

OPTION (B) is RIGHT answer.

The BEATING of aluminium to make aluminium foil is physical change

No CHEMICAL reaction is taking place on the FORM is getting changed.

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Answer:

The tertiary structure will have a single polypeptide CHAIN "backbone" with one or more protein secondary STRUCTURES, the protein DOMAINS. Amino ACID side CHAINS may interact and bond in a number of ways. The interactions and bonds of side chains within a particular protein determine its tertiary structure

Answer:

The vapour densities of TWO gases are in RATIO 1:3 . Their molecular MASSES are in ratio of: (1) 1:3 (2) 1:2 (3) 2:3 (4 ) 3:1

ANSWER:

ALCL3

Explanation:

The FORMULA is AlCl3 and MASS of compont is 133g MOL

heyyy

Winnowing is USED to separate heavier and LIGHTER COMPONENTS of a mixture by wind or by blowing air. threshing is done with the help of BULLOCKS.

ANSWER:

WEIGHT of 1 atom = 6.644×10^-23 g

so, no. of atoms in 40 kg

= 40×10^3 / 6.644×10^-23

= 6.02046 × 10^26 atoms

As, 1 gram atom = no. atoms in ONE mole = 6.02×10^23

so, no. of gram atom = 6.02046×10^26/6.02×10^23

=1000 gram atoms

The molecular weight of BENZOIC acid in benzene as determined by DEPRESSION in freezing point METHOD corresponds to

ionization of benzoic aciddimerization of benzoic acidtrimerization of benzoic acidsolvation of benzoic acid.

I hope you understand.

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There are TWO DIRECT factors that affect solubility:

1.  TEMPERATURE

2. pressure

Answer:

The following are the IONIZATION energies for the elements in the second period: LITHIUM - 520; BERYLLIUM - 900; Boron - 801; Carbon

Answer:

The energy ASSOCIATED with first ORBIT in HYDROGEN atom is - 2.17 X 10 -18 J/atom.