Explore topic-wise InterviewSolutions in Current Affairs.

Explanation:

Quercus infectoria, the ALEPPO oak, is a species of oak, bearing galls that have ... The GALLIC and ellagic acid hydrolyzable tannins react with PROTEINS to PRODUCE typical tanning EFFECTS; ...

Answer:

It's happens because the alcohol has a tenancy to evaporate fastly . so when it evaporate it also take away the heat present in hand so it's MAKES US to feel cool.

Or, A detailed answer.

Alcohols have a tendency to evaporate rapidly or we can say that alcohols are volatile in nature.

Alcohols have a tendency to evaporate rapidly or we can say that alcohols are volatile in nature.That is, alcohol changes rapidly from liquid to gaseous state when it comes in CONTACT with its surroundings.

Alcohols have a tendency to evaporate rapidly or we can say that alcohols are volatile in nature.That is, alcohol changes rapidly from liquid to gaseous state when it comes in contact with its surroundings.Hence, when back of your hand is moistened with alcohol then it actually absorbs heat from your hand, that is, endothermic REACTION takes PLACE and our hand feels cool.

ANSWER:

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ANSWER:

EXPLANATION:

its PLASMA

Answer:

Explanation:

Oxygen can SUPPORT COMBUSTION, sure, but so can fluorine and chlorine. And CARBON dioxide, depending on the fuel. And OZONE, though you MAY consider that a type of oxygen gas.

Answer:

The NOBEL Prize in Physics 1903 was divided, one half awarded to Antoine Henri Becquerel "in recognition of the extraordinary SERVICES he has rendered by his DISCOVERY of spontaneous radioactivity", the other half jointly to Pierre CURIE and MARIE Curie, née Sklodowska "in recognition of the extraordinary services they have rendered by their joint researches on the radiation phenomena discovered by Professor Henri Becquerel."

Answer:

No

Explanation:

MATTER is DEFINED as a SUBSTANCE or entity which has MASS and occupy some space. So if a substance has no mass we cannot REGARD it as matter.

ANSWER:

zinc REACT with soda SOLUTION to give sodium ZINCATE

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ANSWER:

LPG STANDS for liquid PURIFYING gas

ANSWER:

CHANGE in TASTE

Explanation:

when we taste it we FEEL BAD taste

ANSWER:

ee is not possibe value it can be taken as an IMAGINARY no. but ans is IMPOSSIBLE

Explanation:

NO2 is the OXIDE with nitrogen in 4 oxidation state

MASS given is 30

MOLARMASS is 14+ 16*2 = 46

no of moless is mass/molarmass

is 30/46

0.652

1 mole OCCUPIES 22.414L

0.652 mole occupies xL

Crossmultiplying

x= 22.414 * 0.652

=14.61L

ANSWER:

H2

Explanation:

NaHSo4+heat--->NaSo4+H2

ANSWER:

so what????

PLEASE TELL

Answer:

Here is your answer

Explanation:

Sodium shows HIGHLY reactivity in list of element therefore it easily react with any elements than other and therefore, it react vigorously in water . It have electronic configuration 2, 8, 1 which make it more reactive.

Where compared with

IRON which less reactive than sodium and is more stable than sodium have high resistance and therefore, it does not react it cold water, to make it react we have to touch its EXTREME melting POINT.

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Answer: Universal indicator is a chemical that changes color in the PRESENCE of acids and bases from a pH of 2 to 10. Acids turn the indicator red, pink, orange, and yellow, while bases turn it green, blue, and PURPLE. VINEGAR is an acid, so when you poured the indicator solution into the second flask, it turned red.

Answer:

Rigidity and hardness

Explanation:

As the iron is ABLE to WITHSTAND hits from a HAMMER, it SHOWS it is HARD.

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Answer:

Magnetic SEPARATION is a process in which magnetically susceptible material is EXTRACTED from a MIXTURE using a magnetic force. This separation technique can be useful in mining IRON which is attracted to a magnet.

ANSWER:

your answer in ATTACHMENTS

Explanation:

LATENT heat of vaporization is a physical property of a substance. ... When a material in LIQUID state is given energy, it CHANGES its phase from liquid to vapor; the energy absorbed in this PROCESS is called heat of vaporization. The heat of vaporization of water is about 2,260 kJ/kg, which is EQUAL to 40.8 kJ/mol.

ANSWER:

CALCIUM CARBONATE.. CACO3...

d)is answer

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EXPLANATION:

it will be POSITIVE and BASE REMAINS same.

⏱ The endoplasmic reticulum consists of interconnected channels of vesicles and tubules in the cytoplasmic matrix.

⏱ The name endoplasmic reticulum was first used by PORTER & Kaliman in 1952

⏱ It is found in eukaryotic cells.

⏱ Endoplasmic reticulum functions as a manufacturing and packaging system Depending upon the presence and the absense of ribosomes the endoplasmic reticulum has become differentiated into 2 types :

Rough Endoplasmic Reticulum &

Smooth Endoplasmic Reticulum

⏱ Endoplasmic Reticulum are connected on one side to the nuclear MEMBRANE & on the other side to the plasma membrane.

⏱ It provides mechanical support.

⏱ It facilitates exchange of materials between the cells & its SURROUNDINGS.

Explanation:

A plasma is a hot ionized gas CONSISTING of approximately equal numbers of positively charged ions and negatively charged electrons. The characteristics of plasmas are significantly different from those of ordinary neutral GASES so that plasmas are considered a distinct "fourth state of matter." For example, because plasmas are made up of electrically charged particles, they are strongly influenced by electric and magnetic FIELDS (see figure) while neutral gases are not. An example of such influence is the trapping of energetic charged particles along geomagnetic field lines to form the Van Allen radiation belts.

In addition to externally IMPOSED fields, such as the Earth's magnetic field or the interplanetary magnetic field, the plasma is acted upon by electric and magnetic fields created within the plasma itself through localized CHARGE concentrations and electric currents that result from the differential motion of the ions and electrons. The forces exerted by these fields on the charged particles that make up the plasma act over long distances and impart to the particles' behavior a coherent, collective quality that neutral gases do not display.

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because H2SO4 is a strong DEHYDRATING agent

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ANSWER:

Here is your answer

Explanation:

ELEMENT A is CA i.e calcium, valency of calcium is 2

Element B is O i.e OXYGEN,

valency of oxygen is 2

Therefore,

Formula is CaO.

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• Diffusion is the movement of MOLECULES from a region of HIGH concentration to one of low concentration.
• Diffusion occurs in all states of matter: solid, liquid, and gas. It occurs rapidly enough to be observable in a reasonable period of time, however, only in liquids and gases.
• Diffusion is a result of the kinetic PROPERTIES of particles of matter. The particles will mix until they are evenly distributed.

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ANSWER:

NATURAL polymer is present in jute.

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ANSWER:

I don't KNOW,...........

EXPLANATION:

I have GIVEN the ANSWER of your QUESTION in the above PICTURE

Answer:

You can decrease your home's CAPACITY utilize by making changes to THINGS electrical as well as by altering the warming framework for your home.  

1. Make your refrigerator progressively productive  

2. Introduce conservative GLARING lights  

3. Introduce programmed light sensors or PLANNED sensors on outdoor lighting  

4. Introduce sun based controlled scene lighting  

5. Unplug electronic DEVICES when not being used

Explanation:

ANSWER:

USED in MAKING vairous MACHINES and eqipments

Answer:

2Cu+O2——>2CuO

Explanation:

Answer:

Explanation:

Physical change :

1. No NEW SUBSTANCES are formed.

2. The change is reversible.

Example : MELTING of chocolate.

Chemical change:

1. New substances are formed.

2. The change is irreversible.

Example : Burning of a PAPER.

Sewage it's a RAW MATERIAL which is CREATED by the factories sewage are the oil GASOLINE if it's discharge in environmental it's WOULD be poisonous

ANSWER:

BICARBONATE COMPOUNDS :

• SODIUM bicarbonate
• potassium bicarbonate
• magnesium bicarbonate
• amonium bicarbonate
• calcium bicarbonate

Condenstation means small drops of liquid that are formed when warm air touches a cold surface or the process of changing a gas to a liquid.

Vaporization (or vaporisation) of an element or COMPOUND is a PHASE TRANSITION from the liquid phase to vapor. There are two types of vaporization: evaporation and boiling. Evaporation is a surface phenomenon, whereas boiling is a bulk phenomenon.

Solidification, also known as freezing, is a phase CHANGE of matter that RESULTS in the production of a solid. Generally, this occurs when the temperature of a liquid is lowered below its freezing point.

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Interconversion of THREE STATES of matter: Any state of matter can be converted into other state with the help of temperature or pressure. Different terminology for the Interconversion of states of matter is given below: (i) SOLID to Liquid: Fusion. (ii) Liquid to Gas: Vaporisation. (iii) Gas to liquid: Condensation.

Explanation:

Solutes, solvents and SOLUTIONS. A solvent is a liquid that DISSOLVES a solid, liquid or gaseous solute. A solute is a substance dissolved in ANOTHER substance. A solute and a solvent make up a solution. ... Water is the solvent and the SALT is the solute and TOGETHER they make a salt (saline) solution.

Answer:

                               Symbols               Valency

Matellic Ions:

Cuprous                      C+                             +1

Cupric                         Cu2+                         +2

Silver                           AG+                           +1

Feric                            FE3+                          +3

Potassium                   K+                              +1

Aluminum                   Zn2+                          +2

Zinc                              Al3+                           +3

Non-Matellic Ions

Hydrogen                      H+                            +1

Hydride                          H-                              -1

Chloride                         Cl-                             -1

Iodide                              I-                               -1

Oxide                              O2-                           -2

Nitride                             N3-                           -3

Sulphide                          S2-                            2

Polyatomic Ions:

Hydroxide                      OH-                            -1

Ammonium                    NH4+                         +1

Carbonate                      CO3--                         -2

Phosphate                      PO4-                          -1

Chromate                       CrO4--                        -2

ANSWER:

1. pb(ch3coo)2 +2HCL~~~>pbcl2+2ch3cooh

• 2cu(no3)2~~~>2cuo+o2+4no2
• 2h2o2~~~>2h2o+o2

Explanation:

A combination REACTION (also known as a synthesis reaction) is a reaction where two or more elements or compounds (reactants) combine to form a single compound (product). Such reactions may be represented by equations of the following form: X + Y → XY. The combination of two or more elements and form one compound is called combination reaction. Combination reactions can involve different types of reactants:

Type Example

a) Between elements C + O2 → CO2 Carbon completely BURNT in oxygen yields carbon dioxide

b) Between compounds CaO + H2O → Ca(OH)2 Calcium oxide (lime) COMBINED with water gives calcium HYDROXIDE (slaked lime)

c) Between elements and compounds 2CO + O2 → 2CO2 Oxygen combines with carbon monoxide, and carbon dioxide is formed.

There is no SPECIFIC number of reactants in a combination reaction.

Combination reactions are usually exothermic because when the bond forms between the reactants, heat is released. For example, barium metal and fluorine gas will combine in a highly exothermic reaction to form the salt barium fluoride:

Answer:  in the given reaction magnesium is oxidized .

Explanation: the reaction is :

2Mg + O2 ====> 2 MgO

it is clear from the reaction is OXYGEN added in MG and form MgO and we KNOW that the addition of oxygen in the reaction is called oxidation reaction .

So, the magnesium is oxidized  and form MgO.

ANSWER:

Plant and animal proteins vary in the number of amino acids they contain. One of the main differences between plant and animal proteins involves their amino acid contents. ... When the BODY digests the proteins in food, it breaks them down into amino acids. The body may need DIFFERENT amino acids at different TIMES.

Answer:

The SMELL of HOT sizzling food reaches you several metres away, but to GET the smell from COLD food you have to GO close because the kinetic energy of the particles of matter increases with the increase in temperature.

ANSWER:

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