Explore topic-wise InterviewSolutions in Current Affairs.

ANSWER:

Green HOUSE gases like CFCs leads to the GROWTH of Ozone depletion. You know that ozone depletion MEANS the rise of Global warming ( since harmful ultraviolet rays of the sun will enter the earth)

This is how Green house effect and Global warming are related.

Explanation:

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ANSWER:

yes they are.

Explanation:

Acid salts are formed by replacement of the ionisable HYDROGEN ions of the acid by a METALLIC ion or ammonium ion as they are located above of hydrogen in the ACTIVITY series of metals. Metals which are placed  above hydrogen in the activity series such as potassium thereby have the ability to do so and hence DISPLACE hydrogen ions from dilute acid to form salts and hydrogen (gas).

ANSWER:

(d) SUBSTITUTION...........

Answer:

Global warming is the long-term rise in the average temperature of the Earth's climate system. It is a major aspect of climate CHANGE and has been demonstrated by direct temperature measurements and by measurements of various effects of the warming. Global warming and climate change are often USED interchangeably. But, more accurately, global warming is the mainly human-caused increase in global surface temperatures and its PROJECTED continuation, while climate change includes both global warming and its effects, such as changes in precipitation. While there have been prehistoric periods of global warming, MANY observed changes since the mid-20th century have been unprecedented over decades to millennia.

ANSWER:

a is NUCLEOPHILE

bi is nucleophile

ANSWER:

[KR]4d2 5s2

Explanation:

Explanation:

PLASTER of paris, quick-setting gypsum plaster consisting of a FINE white powder (calcium sulfate hemihydrate), which hardens when moistened and allowed to dry. Known since ancient times, plaster of paris is so called because of its PREPARATION from the abundant gypsum found near Paris.

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Nucleophillic Substituition Rxn

Nucleophile attack krega aake

Nuckeophile to pta HI joga ab kya hota hai

chlo fir BHI bta dete hai

**Nucleophile is nucleus loving group

Atom or group of atoms attracted toward the nucleus is CALLED nucleophile..

It may be negatively charged radical or neutral molecule CONTAINING unshared pair of electrons at central atom.....

eg. Ch3 (-ve) , Ph3 , Nh3 etc.

***

example : reaction of ethyl chloride with aqueous alkali

Ch3-Ch2cl + NaOH ----------> Ch3-Ch2-Oh + NaCl

attacking = OH-

Leaving = Cl-

Functional Group Isomerism

compounds having same molecular formula but different functional group in structural formula..

Example:

1. ketone and aldehyde

(See attachment)

2.Cyanide and isocyanide

see the attachement

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ANSWER:

Both of these are considered to be isoelectric to Argon (Ar) because they have the same number of electrons. ... Anions are those that have negative CHARGE and always accept electrons from other MOLECULES. Cations are those with positive charge and always give electrons to other molecules.

Answer:

by treating BENZENE with concentrated NITRIC ACID

Answer:

ihshjshdndn

Explanation:

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ANSWER:

c

Explanation:

ACCORDING to my TEXTUAL answer

Answer:

3

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Answer:

Due to absence of d orbitals nitrogen cannot make five UNPAIRED electrons like PHOSPHORUS. Therefore it does not for pentahalides it only form trihalide due to presence of three unpaired electrons

N= 7= 1s² 2s² 2p³

Answer:

mass NUMBER = 24

Explanation:

atomic number = PROTONS = electrons = 12

mass number = protons + NEUTRONS

=> 12 + 12

=> 24

Answer:

9M

Explanation:

PARTIAL pressure=Mole FRACTION*TOTAL pressure

∴X=0.14

X=n/ +nO

n +55.5/= 1/0.14

∴n=9.0

Molarity=9M

Answer:

the mixture of two METALS is called an alloy

bronze and tin is an alloy

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ANSWER:

it is NEARLY 1-2 KILOGRAMS

Answer:

It is prepared in the LABORATORY by TREATING Ferrous SULPHIDE STICKS with dilute H2SO4. It is prepared by heating Sulphur powder in an atmosphere of H2 at 450°C.

Explanation:

NEUTRALIZATION reactions usually proceed to completion. The REVERSE of the neutralization reaction is CALLED hydrolysis

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ANSWER:

through HYDROGEN and sulphur

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ANSWER:

EXPLANATION:BHAAG bhosdike

ANSWER:

Irregular reflection, or diffusion, consists of reflection in which the reflected rays of light are not parallel but take various directions, thus destroying the IMAGE of the light source. Rough, unpolished surfaces give such reflection. Smooth, unpolished surfaces generally give a combination of two kinds of reflection.

Diffused reflection is very important in the study of illumination inasmuch as diffused light plays an important part in the lighting of interiors. This form of reflection is seen in many photometer screens.

Light is also diffused when passing through semi-transparent shades or screens. In considering reflected light, we find that, if the surface on which the light falls is colored, the reflected light may be changed in it nature by the absorption of some of the COLORS. Since, as has been said, in interior lighting the reflected light forms a large part of the source of illumination, this illumination will depend upon the nature and the color of the REFLECTING surfaces.

Whenever light is reflected from a surface, either by direct or diffused reflection, a certain amount of light is absorbed by the surface. Table XIII gives the amount of white light reflected from different MATERIALS.

But-2-yne............

Answer:

4. Rushing

Explanation:

Because 1,2,3 are related to energy.

ANSWER:

✴Every ray of light is REFLECTED PERFECTLY from the surface and bounces back in a regular way. ✴The reflected image is very clear and sharp unlike IRREGULAR REFLECTION.

ANSWER:

A Binary SOLID A+B has a zinc blends structure with B-ions constitutings the lattice and A+ions OCCUPYING 25 percent tetrahedral HOLES....

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Answer:

All the alkali metals have one valence electron,ns1 (Table 10.1) outside the noble GAS CORE. The loosely held s-electron in the outermost valence shell of these elements makes them the most ELECTROPOSITIVE metals. They readily lose electron to give monovalent M+ IONS.

A spontaneous reaction is a reaction that FAVORS the formation of products at the conditions under which the reaction is occurring.

_______________________

A nonspontaneous reaction is a reaction that does not favor the formation of products at the given set of conditions. In order for a reaction to be nonspontaneous, it MUST be endothermic, accompanied by a DECREASE in entropy, or both.

Answer:

An interesting approach named as “In-situ Loading-Hydration Process” is proposed and DEMONSTRATED to develop a new type of compact gypsum product with load-bearing ability, benefited from excellent hardness and bending strength. In detail, bassanite (CaSO4·0.5H2O) is press-formed in a mold and in-situ hydrated into gypsum (CaSO4·2H2O) under the control of loading-pressure. The maximum hardness of 1.47 GPa and bending strength of 17.8 MPa are achieved at the loading pressures of 50 and 20 MPa, respectively. These outstanding mechanical PROPERTIES of the processed gypsums are mainly ATTRIBUTED to the low-level POROSITIES and INTERLOCKING crystal microstructures.

Answer:

75 KELVIN is WHISH REDUCING PART of °c

ANSWER:

the raoults law is as FOLLOWS given in the diagram

EXPLANATION:

ACCORDING to raoults law

partial FRACTION of solvent is directly propotioal to vapour pressure of solvent then as per image

Answer:

Ca3PO4

it is the HARDEST compund FOUND in HUMANS with tesile strength more than 8 times that of STEEL

ANSWER:

C+ is LARGER in size

Explanation:

as the no. of electron DECREASE repulsion b/w ELECTRONS decrease and size INCREASES

Lattice is an imaginary array of POINTS in SPACE, regular and periodic. ... With each of these lattice points, the motif, the molecule(s) or part there of, that CONSTITUTE the CRYSTAL will be associated. Smallest part of the crystal which when repeated in 3D space generates the entire crystal is CALLED the unit cell.

Answer:

the CONFIGURATION description of c2 d glucose is C3,C4 and C5

ANSWER:hexafluorocobaltate (III)

EXPLANATION:

TEMPERATURE at which VOLUME of gas THEORETICALLY becomes zero is

_________________________

Protons were DISCOVERED by : E. Goldstein

Neutrons were discovered by : James Chadwick

ELECTRONS were discovered by : J. J. THOMSON

4P means 4 molecules of Phosphorus

P4 means an ATOM of Phosphorus with valency 4

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Answer:

So to INCREASE the volume of gas by 20 percent at constant PRESSURE the temperature should be increased by 59 degree celcius.

ANSWER:

GIVEN mass=128g

mass of ONE MOLE O=16g

no. of mole=128/16=8mol.

ANSWER:

THISIS my ans.

Explanation:

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Explanation:

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Molar mass of H2 = 1 × 2

= 2

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ANSWER:

As we know Density of pure WATER is = 1 g/ml.

EXPLANATION:

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Answer:

EXPLANATION Isoelectronic species/ions/atoms are the species which have same NUMBER of ELECTRONS but different magnitude of nuclear charges & belongs to different atoms or ions.

EXPLANATION:

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Answer:

1. EXPLAIN the Bohrs model ?
2. What are Canal rays?
3. Some QUESTIONS of finding AVERAGE mass of ISOTOPES
4. give some USES of isotopes

EXPLANATION:

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Answer:

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