Explore topic-wise InterviewSolutions in Current Affairs.

Answer:

A NATURALLY occurring solid material from which a METAL or VALUABLE can be EXTRACTED

Answer:

as it takes LESS time to cook FOOD and we can SAVE L.P.G gas.

ANSWER:

HERE IS YOUR ANSWER

Yeah it's true.

When a METAL reacts with water it FORM metal hydroxide.

HOPE IT HELPS YOU ☺ ❣️

ANSWER:

it may be COPPER carbonate(CU(CO3))

A syllable joined to the beginning of a word to create a NEW word is called a PREFIX. for EXAMPLE: a is added to moral to make : amoral which MEANS lacking of morality

It is on the PURITY of the WATER on which it DEPENDS

ANSWER:

if it is not CLEAR I'll RESEND you the PIC. hope you'll understand......

Answer:

hi here your answer

1. Reduce

Reducing waste is the most important thing we can do. By reducing waste, we avoid the unnecessary use of resources such as materials, energy and water. It means there is less waste to manage.

2. Reuse

The next most important thing we can do is reuse waste MATERIAL. That way it doesn't go in the rubbish and end up in the landfill. It also means you don't have to buy a new product. That saves you money and saves the energy and resources that would have been used to make the new product.

3.Recycle

Recycling involves some form of reprocessing of waste materials to produce another product. For example, recycling plastic bottles to make buckets.

4.Recover

This is the recovery of waste without any pre-processing. For example, waste oils that cannot be refined for reuse in VEHICLES can be BURNT for energy recovery. RECOVERING the energy from waste oil reduces our dependence on coal and imported oil.

5.Residual Management

This is the last option when waste cannot be used in any other way. Usually, this means sending rubbish to a landfill. Residual disposal of liquid waste is normally into a sewer or septic tank.

ANSWER:

l=3

Explanation:

ACCORDING toaufbau PRINCIPLE

i.e L=n-1

=4-1

=3

ANSWER:

COMBINATION REACTION

Answer:

SUBLIMATION is a chemical process where a solid turns into a gas without GOING through a liquid STAGE. An example of sublimiation is when ice CUBES shrink in the freezer.

EXPLANATION:

YES this all right

please MARK me as BRAINLIST ANSWER

Answer:

convert EVERYTHING in SI units

hope it helps UH.....

Answer:

11.5 x kj

Explanation:

0.2 G Na → x  

1 g Na → x/0.2 (dividing both SIDES by 0.2)

2.3 g Na → 2.3 * x/0.2 = 2.3/0.2 x = 11.5 x (MULTIPLYING both sides by 2.3)  

Answer:

2-butanoic ACID

Explanation:

as the FUNCTIONAL GROUP is COO it is CARBOXYLIC acid

EXPLANATION:

1. because carbon is less REACTIVE than CALCIUM
2. aluminium makes a Aluminium oxide which protects the food
3. because because the density of the ALLOY is more than the density of the other pure METALS

the COLOURLESS GAS is dinitrogen

PbNO3 + ∆ ------------------> PBO + NO2

Answer:

Butene

2-2di BROMO butane

2chloro 4methyl PENTENE

EXPLANATION:

plz.mark me as BRAINLIEST plz PLEASE

PLEASE COMPLETE this QUESTION

Answer:

An atom is smallest particle in an element that has the properties of the element. It is not possible to breakdown the atom further retaining the properties of the element. Atoms are not visible to the naked EYE and are the basic building blocks. For example the atoms of element gold cannot be broken down further and each atom has the properties of gold.

Molecules are formed by the combination of two or more atoms. Unlike atoms, molecules can be subdivided to individual atoms. The atoms are bonded together in a molecule. Molecules also are not visible to the naked eye, while can be seen through highly magnifying microscopes and other scientific devices. Water is comprised of numerous water molecules. Each water molecule is made up of one oxygen atom and two hydrogen atoms. So a water molecule can be further divided into oxygen and hydrogen atoms. But these atoms cannot be subdivided. In a molecule, atoms are bonded together by single, double, or triple bonds.

An atom has a nucleus surrounded by electrons. The electrons are negatively charged particles. The nucleus contains neutrons and positively charged protons. Depending on the majority of the particles, the atom can be positively or negatively charged. When these charged atoms bond together to form molecules, the bonds are formed by the electrons filling up the outer orbits of the atoms. Since atoms exist independently, there is no bonding in an atom.

When atoms combine in different numbers to form a molecule, the end result can vary. For example, when two atoms of oxygen combine to form a molecule, it becomes O2 which is the oxygen we breathe in. But when three oxygen atoms combine to form an O3 molecule, it becomes Ozone. So ANOTHER difference between atoms and molecules is that when similar atoms combine together in varying numbers, molecules of different properties can be formed. But when similar molecules combine together in any numbers, a simple product is formed.

A molecule is usually stable to exist by itself but an atom is not stable by itself. This is owing to the presence of electrons in the atoms. Only when sufficient number of electrons are PRESENT in an atom, it becomes stable. The sufficient number of electrons are received in an atom, when two atoms bond together and share the electrons. Thus it becomes stable and forms a molecule. Not all atoms can bond together. The bonding depends on the charge and chemical properties of the atoms.

Atoms and molecules are present in all objects and living things. The composition and density LEVELS vary the thickness and form of the objects. In gases, the molecules are very loosely packed so that the molecules can flow around easily without colliding. In liquids, the packing is a bit more compact and so the particles are always together. But in solids the packing is very compact and hardly any movement to the molecules is allowed, giving the object a firm shape.

Answer:

b

Explanation:

Mass of magnesium = 24

Mass of OXYGEN = 16

% of Oxygen = (16/40) ×100 = 40 %

the PROCESS of SEPARATING out of INSOLUBLE substance

follow ✔♡♡♡♡♡

ANSWER:

i think its a ZINC INTENSIVE PHYSICAL PROPERTY

Answer:

Take some (approximately 5 g) impure sample of COPPER sulphate in a china dish. Filter the impurities out.Evaporate water from the copper sulphate solution so as to get a saturated solution. Cover the solution with a filter PAPER and LEAVE it undisturbed at room temperature to COOL SLOWLY for a day.

ANSWER:

i am SORRY for it but i DONT KNOW its answer

.

.

.

Answer:

sodium is most reactive .

Explanation:

it reacts with AIR and burns

so it is kept in kerosene. PLS now come to my QUESTION and ANS

Answer:

158 ml

total mol of Hcl REQUIRED to react with an mixtures of NaHCO3 and Na2CO3=2x0.00526+0.00526=0.01578 mol. hence, 158 ml of 0.1m of Hcl is required to react COMPLETELY with 1g mixture of Na²,co³,NaHCO3, containing equimolar amount of both.

Answer:

The Mpemba effect is the OBSERVATION that warm water freezes more quickly than cold water. ... Hence the faster FREEZING. Another is that warm water EVAPORATES rapidly and SINCE this is an endothermic process, it COOLS the water making it freeze more quickly.

Follow me ❤

<P>EXPLANATION:

s and p BLOCK ELEMENTS are collectively called as the representative elements...s block have configuration ns1-2 and p block have ns2np1-6

Answer:

That is, 3s2 3p6 configuration in ground state. Each OXYGEN atom NEED 1 electron pair to complete the octet. So, the electron pairs in 3p-orbitals of Cl- ion involve in bonding with the 2 O ATOMS. So we have 2 bonding electron pairs and 2 lone pairs (one in 3s-orbital and one in 3p-orbital).

Formic acid or methanoic acid is PRESENT in ant sting and NETTLE LEAF

Answer:

d) 2Pb3O4→6PbO+O2

Explanation:

2Pb3O4→6PbO+O2

Minium is the naturally occurring form of lead tetroxide, Pb3O4 also KNOWN as red lead. Lead(II) oxide, yellow, also CALLED lead monoxide, is the inorganic compound with the MOLECULAR FORMULA PbO.

a) Mercury(II) oxide, also called mercuric oxide or simply mercury oxide, has a formula of HgO. It has a red or orange color. But Hg is not yellow.

b), c) PBCO3 and MgCO3 are white.

When a sodium atom transfers an electron to a CHLORINE atom, forming a sodium cation (Na+) and a chloride ANION (Cl-), both ions have complete valence shells, and are energetically more STABLE. The reaction is EXTREMELY exothermic, producing a bright yellow light and a great deal of heat energy.

Answer:

On heating, ferrous sulphate CRYSTALS lose water and ANHYDROUS ferrous sulphate (FeSO4) is formed. So their colour changes from light green to white. On further heating, anhydrous ferrous sulphate decomposes to form FERRIC oxide (FE2O3), sulphur DIOXIDE (SO2) and sulphur trioxide (SO3).

ANSWER:

jsy TEG gesiuseddtag gesiusedduydgs. SG ffg ehxg ED. dyteuw

ANSWER:

A colorless, volatile, EXTREMELY flammable liquid KETONE that is WIDELY used as a solvent, for example in nail-polish remover. Chemical formula: C3H6O.

mark as brainliest!

EXPLANATION:

n/m

I THINK that the ANSWER MAY be this

Answer:

Luciferin (from the Latin lucifer, "light-bringer") is a GENERIC term for the light-emitting compound found in organisms that generate bioluminescence. Luciferins typically UNDERGO an enzyme-catalysed OXIDATION and the resulting excited state INTERMEDIATE emits light upon DECAYING to its ground state.

Explanation:

make me as brainaliest

Answer:

AgCl (Silver Chloride)

EXPLANATION:

HCL (HYDROCHLORIC ACID) + AgNO₃ (silver nitrate)

= HNO₃ (nitric acid)  + AgCl (silver Chloride)

here HNO₃ is aqueous and AgCl is a WHITE precipitate

1.a band of colours, as seen in a rainbow, PRODUCED by separation of the components of LIGHT by their DIFFERENT degrees of refraction according to wavelength.

2.

used to CLASSIFY something in terms of its position on a scale between two EXTREME points.

mark as brainliest!

Answer:

accourding to LAW of conservation of MOMENT the two PARTICLE system always remain constant ..........

ANSWER:

at CONSTANT p.v .........

Answer:

...

Explanation:

Getty Images

We’ve all been there.

You can’t concentrate. You feel a headache piercing your skull. Your stomach is growling so loudly that everyone near you can hear it. And if you don’t get SOMETHING to eat soon, you just might bite the head off of the next person who talks to you (and then chew it up and swallow it).

You’re “hangry” — that is, HUNGRY and angry.

Toddlers may be the demographic most often associated with empty-bellied crankiness, but it’s a feeling that people of all ages experience. While a child’s meltdown will probably encourage Mom or Dad to feed her, how adults address their hunger is more complicated.

While hanger is unpleasant to experience — and potentially dangerous to anyone who crosses your path — it serves an important function.

“Your body wants to keep you alive,” explains Alyssa Ardolino, a registered dietitian from Reston, Virginia, who is also a mindful eating EXPERT as well as the nutrition communications coordinator for the International Food Information Council.

Your body doesn’t know that you haven’t eaten lunch because you left your wallet at home or had to skip dinner to stay late at work to finish a project. All it knows is that it needs more energy, now.

“Your body is super smart, so if for some reason, you have a deficit of calories or are not eating consistently, it focuses on the main parts of the body that it needs to SUSTAIN,” such as the heart, the brain, and certain vital organs, Ardolino says.

Like toddlers, we are biochemically affected by our hunger and it impacts our behaviors. In this regard, the Snickers ad campaign tagline “You are not you when you’re hungry” is right on the nose.

“Particularly when we haven’t eaten in a long time, we can feel IRRITABLE, we can have more fatigue, we have a decreased awareness in general,” says Ardolino. “A lot of people who haven’t eaten in a long time have a hard time concentrating or being present in situations.”

She adds that impulsivity is also common when we’re hungry.

answer

mass of NA = 22

mass of o = 16

mass of h = 1

total mass = 22+16+1 = 39

Explanation:

Osmotic pressure is the force CAUSED by a SOLUTION passing through a semi permeable SURFACE by osmosis, which is equal to the force REQUIRED to resist the solution from passing back through the surface.

hope it helps you

ANSWER:

GIVE benzen DROPWISE to concentrated sulfuric ACID.  

Explanation:

Disolving benzene in sulfuric acid.

Next day, benzen sulphonic acid performes in water SOLUTION.

Answer:

NO2 is an AMBIDENT ligand and can attach to the metal through two sites i.e. N and O. Therefore, it SHOWS linkage isomerism. The two ISOMERS are [Co(NH3)5(NO2)]2+ and [Co(NH3)5(ONO)]2+. Their IUPAC name is Nitropentamminecobalt(II) ion and Nitritopentamminecobalt(II) ion.

Answer: Materials for Making Bio diesel

1 liter of new vegetable oil (e.g., canola oil, corn oil, soybean oil)

3.5 grams (0.12 ounces) sodium hydroxide (also known as lye). Sodium hydroxide is used for some drain cleaners. The label should state that the product contains sodium hydroxide .

200 milliliters (6.8 fluid ounces) of methanol (methyl alcohol). Heet fuel treatment is methanol. Be sure the label says the product contains methanol (ISO-Heet, for EXAMPLE, contains isopropyl alcohol and won't work).

Blender with a low-speed option. The pitcher for the blender is to be used only for making bio diesel. You WANT to use one made from glass, not plastic because the methanol you will use can react with plastic.

Digital scale [to accurately measure 3.5 grams (0.12 ounces)]

Glass container marked for 200 milliliters (6.8 fluid ounces). If you don't have a beaker, measure the volume using a measuring cup, pour it into a glass jar, then mark the fill-line on the outside of the jar.

Glass or plastic container that is marked for 1 liter (1.1 quarts)

Widemouthed glass or plastic container that will hold at least 1.5 liters (2-quart pitcher works well)

Safety glasses, gloves, and probably an apron

You do not want to get sodium hydroxide or methanol on your skin, nor do you want to breathe the vapors from either chemical. Both chemicals are toxic. Please read the warning labels on the containers for these products. Methanol is readily absorbed through your skin, so do not get it on your hands. Sodium hydroxide is caustic and will give you a chemical burn. Prepare your bio diesel in a well-ventilated area. If you spill either chemical on your skin, rinse it off immediately with water.

How to Make Bio diesel

You want to prepare the bio diesel in a room that is at least 70 degrees F because the chemical reaction will not proceed to completion if the temperature is too low.

If you haven't already, label all your containers as "Toxic—Only Use for Making Bio diesel." You don't want anyone drinking your supplies, and you don't want to use the glassware for food again.

Pour 200 milliliters methanol (Heet) into the glass blender pitcher.

Turn the blender on its lowest setting and slowly add 3.5 grams sodium hydroxide (lye). This reaction produces sodium meth-oxide, which must be used right away or else it loses its effectiveness. (Like sodium hydroxide, it can be stored away from air/moisture, but that might not be practical for a HOME setup.)

Mix the methanol and sodium hydroxide until the sodium hydroxide has completely dissolved (about 2 minutes), then add 1 liter of vegetable oil to this mixture.

Continue blending this mixture (on low speed) for 20 to 30 minutes.

Pour the mixture into a widemouthed jar. You will see the liquid start to separate out into layers. The bottom LAYER will be glycerin. The top layer is the bio diesel.

Allow at least a couple of HOURS for the mixture to fully separate. You want to keep the top layer as your bio diesel fuel. If you like, you can keep the glycerin for other projects. You can either carefully pour off the biodiesel or use a pump or baster to pull the bio diesel off of the glycerin.

Explanation:

ANSWER:

Ag+3HNO3=AgNO3+H2O+NO3