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archana TOOK solution of copper SULPHATE and ADDED a metal (x) to her surprise after an hour the colour disappeared and the metal had REDDISH brown deposit, ...

These OBJECTS are known as opaque objects for example TREE, IRON sheet etc. Whereas, material through which we can clearly see the objects are known as transparent objects. For example glass etc. Materials through which objects are partially visible are known as a translucent OBJECT.

is a chemical compound with the chemical FORMULA CH₄. It is a group-14 HYDRIDE and the simplest alkane, and is the main CONSTITUENT of NATURAL GAS.

COExplanation:CARBON MONOXIDE because I THINK they USE more VEHICLES

to stop air POLLUTION we avoid use of air conditioner and refrigeratorkeep our surroundings cleanto avoid use of NON renewable PLASTIC

tion:Metals :-Majority elements in the periodic table are metals. This includes alkali metals, transition metals, lanthanides, actinides and ALKALINE earth metals. Metals are separated by nonmetals on a periodic table through a zigzag line STARTING from carbon, till radon. The elements between the two are phosphorus, selenium and iodine.These elements and elements right to them in the periodic table are nonmetals. Elements present just to the left of the line are termed as semimetals or metalloids. These will have the combined properties of both metals and nonmetals.Non Metals :- Very few elements in the periodic table are non-metals. These are present on the right-hand side in the periodic table. Elements that come under non-metals are sulphur, carbon, all HALOGENS, phosphorus, hydrogen, oxygen, selenium, nitrogen and noble GASES.In the periodic table, non-metals are located left of the halogens and to the right of the metalloids. Since noble gases and halogens are also non-metals, these elements are often referred to as non-metals.

I do not UNDERSTAND........K

er of soil which is just below the top-soil is called B-horizon. It is also known as sub-soil. The sub-soil is made up of slightly BIGGER ROCK particles than that of top-soil. ... The sub-soil has very LITTLE humus (decayed ORGANIC matter).

hermic process releases HEAT, CAUSING the TEMPERATURE of the immediate surroundings to RISE. An endothermic process ABSORBS heat and cools the surroundings.

.SALT HOPE it helps u. PLZ mark as brainliest

2= H2O+PB1 pbo+h2= H2O+PB2 C + h2o= CO+h23 co +h2 +h2o= co2h2opleas mark me as the BRAINLIST

There are a TOTAL 16 MOLES.

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ting POINT of a substance is the temperature at which it transforms from a solid to a liquid state. Metals SHOW a high melting point as they exist in a crystalline solid FORM. High melting point metals have strong intermolecular forces between atoms.

The frequency is nothing but c/& as speed=frequency TIMES wavelength. THUS, Energy = Planck's constant(H)*frequency(v). According to your case, the electron is in a transition STATE from n=5 to n=2. So, the TOTAL energy during the transition is given by E(net) = E(at state 5) - E(at state 2).

n important chemical reagent and industrial chemical, USED PRIMARILY in the production of CELLULOSE acetate for photographic film, polyvinyl acetate for wood glue, and synthetic fibres and fabrics. In households, diluted ACETIC acid is often used in descaling agents.

you TRYING to invade Cuba this is a secret CODE , written in a secret LANGUAGE

C₆H₈O₃ is the ANSWEREXPLANATION:The MOLECULAR formula C6H8O3 (MOLAR mass: 128.13 g/mol) may REFER to: 2,5-Bis(hydroxymethyl)furan. Dihydrolevoglucosenone. Dihydrophloroglucinol.

O O 2 MOLECULE is INCORRECT MATCH

22gExplanation:It HELP you MARK me as brainliest answer ok... i know BENGALI also... KEMON acho ?

Very weak bases such as halide ions (I-, BR-, CL-) water (OH2), and SULFONATES such as p-toluenesulfonate (OTs) and methanesulfonate (OMs) are excellent leaving groups. These are the conjugate bases of strong acids.Hope it helps :)

why are ANSWERING wrong answers to my QUESTION to get that POINTS. don't you have any sense?

tal objects are MADE by the process, melting the metals and increasing the concentration of METAL. Explanation: Melting it: The ORE or the RAW material is taken. It is melted by applying heat.

is BASED on law of multiple proportion which states that if two or more ELEMENTS combined together to form two or more COMPONENTS they do so in a SIMPLE ratio.Explanation:Mark as BRAINLIEST plzzzzzzzz

DEFINITION :-In aerobic, or “with oxygen” exercise, your muscles have enough oxygen to produce the energy needed to perform. Anaerobic “without oxygen” exercise means oxygen DEMAND is greater than oxygen supply and you can't keep up with the energy your body is demanding.EXAMPLE:-  EXAMPLES of aerobic exercise include swimming laps, running, or cycling. Anaerobic exercises involve quick bursts of energy and are performed at MAXIMUM EFFORT for a short time. Examples include JUMPING, sprinting, or heavy weight lifting.

मोलरता - एक लीटर विलयन में उपस्थित विलेय के ग्राम अणुओ की संख्या ही उस विलयन की मोलरता कहलाता है।मोललता - एक हज़ार ग्राम विलायक में उपस्थित विलेय के ग्राम अणुओ की संख्या ही उस विलयन की मोललता कहलाता है।