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Which organic compound is isometric with at least one aldehyde? alcohol carboxylic acid ester ketone



Ketone is isomeric with an organic compound containing at least one aldehyde group


Isomers have same molecular formula but different functional groups due to variation in positioning of certain atoms within molecules.

Let us consider 1-propanal (contains one aldehyde group). Acetone is isomeric with 1-propanal as both have molecular formula C_{3}H_{6}O. But 1-propanal contains aldehyde (-CHO) functional group and acetone contains keto (-CO-) functional group. Isomerism appears between these two compound due to variable positioning of oxygen atom.

Therefore they are isomeric to each other.

An image has been attached below for more clarification.


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WORTH 15 FOR 2 EASY QUESTIONS MULTIPLE CHOICE SECOND QUESTIONS EVEN EASIER THAN THE FIRST IM PRETTY SURE THE ANSWER IS C JUST CHECKING Which of the following conditions would likely prevent the assembly and survival of new kinds of organic molecules on Earth today? A. the presence of bacteria and other life forms B. the presence of carbon dioxide C. the supply of atoms that serve as raw material D. the light and warmth from the sun 2. Several different species make up a A. family. B. genus. C. kingdom. D. phylum.



The integumentary system covers the surface of the body is true about the integumentry system.


The integumentary system includes the skin, nails, glands, hairs, and nerves. Its main role is to act as a barrier to protect the body from the outside environment. It also retains body fluids, regulates body temperature, eliminates waste products, and protects against disease.

The integumentary system is the largest organ in the body that covers the surface of the body.

Thus, The integumentary system covers the surface of the body is the true statement about the integumentry system.


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Which of these is a major source of organic compounds? petroleum coal natural gas all of these


Which of these is a major source of organic compounds? petroleum coal natural gas all of these


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Which of these uses ethos? A. We are starving because the food, if you can call this slop “food,” at our school is not fit for the lowest grub on this fine Earth! B. All of the other schools in our district offer organic foods in the lunchroom; therefore, our school should offer organic foods as well. C. Yum Organics has been providing well-rounded organic lunches to schools on the West Coast for more than 15 years. D. The food at our school is O.K.; however, I wish we had more organic choices.


Answer: D) Bountiful harvests, to suggest Gant’s agricultural success.

Explanation: In the given excerpt we can see many sensorial details like “His grape vines thickened into brawny ropes of brown” and “And the flowers grew in rioting glory in his yard—the velvet-leaved nasturtium, slashed with a hundred tawny dyes”, these sensorial details about Gant’s harvests helps to create an image of abundance, and products of great quality, which demonstrates Gant’s agricultural success.


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Which of the following is the smallest single component of a typical soil? Gases Minerals Moisture Organic material


There are two systems in the human body that are responsible for the coordination between the functions of different systems to achieve the unity of the living organism’s body. These two systems are the nervous system and the endocrine system. The action of the nervous system is fast and takes a short time, while the action of the endocrine system is slow and takes a long time.

The functional unit of the nervous system is the nerve cell or the neuron. The neuron consists of a cell body and the axon. The cell body starts with the dendrites that receive the messages or the impulses from other neurons or from different sense organs or receptors. These impulses are then transmitted through the cell body. The cell body contains a nucleus and different organelles which help the nerve cell to perform its functions. The nerve impulse is then transmitted to the axon.

The axon is an extension from the cell body. There are some cells called Schwan cells that secrete a myelin sheath to insulate the axon from the surrounding medium. The insulated axons have more ability to conduct the impulses than non-insulated axons. The axon ends with the terminal arborizations. The terminal arborizations of a nerve cell connect to the dendrites of the next cell or to the afferent organ. The gaps between the dendrites and the terminal arborizations are called the synapses.

The nerve impulse is an electrochemical phenomenon i.e. an electrical phenomenon with a chemical nature. The membrane of the axon acts as a barrier between an outside positively charged medium and an inside negatively charged medium. This makes a potential difference of  -70mV. This state is called the resting potential. When the membrane is subjected to a stimulus, the positive charges enter to inside and the negative charges exit to the outside. The potential difference now becomes +40mV. This state is called the depolarization state. The point of stimulation acts as a new stimulus for the next point and so on. The membrane sooner gains its permeability again and the positive charges return to the outside and the negative charges to inside. This state is called repolarization.

The nerve impulse reaches the synapse. There are some neurotransmitters that are excited by the nerve impulse coming and carry the message across the membrane. Some receptors receive theses neurotransmitters on the dendrites of the next neuron. These receptors act as a stimulus for the new cell.


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A change in a sequence of DNA bases in a bacterial cell has resulted in a mutation. This mutation has increased the ability of the bacteria to break down and digest organic molecules in the environment. Bacteria with this mutation are better able to find and utilize food sources. According to the theory of natural selection, what is MOST likely to occur in future generations of this bacteria? A) The relative frequency of the mutation will increase as time passes. B) Because the mutation has changed the DNA of the bacteria, a new species will be formed. C) Because the mutation is abnormal, the mutation will become more rare with every passing generation. D) Bacteria with the mutation will increase in number until the food supply is exhausted, causing the bacteria to become extinct.



The correct answer would be B. CO, which comes from fossil fuel–powered engines, such as cars.

As the name suggests the primary pollutant is defined as the pollutant emitted directly from the source. For example, carbon monoxide which is produced due to incomplete combustion is emitted directly from cars, buses et cetera.

In contrast, secondary pollutant refers to the pollutant which is formed after reacting with other pollutants in the atmosphere. For example, nitrogen dioxide which is formed when NO reacts with oxygen, acid rain which is formed when nitrogen dioxide and sulfur dioxide reacts with water present in atmosphere et cetera.


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Magnesium sulfate (MgSO4) dissolves in seawater? Which is the correct description of Magnesium Sulfate?A. It is an inorganic saltB. It is an organic saltC. It is an inorganic lipidD. It is an organic lipid



Let variable “c” denote the first distance traveled to the west from the origin.
Let variable “b” denote the second distance traveled going up 50° to the north.

b = 4.5km
c = 4.5km
Ф = 50°


1. Sketch the problem.

2. Connect the two lines. You will notice you had formed a triangle.

3. Notice how you have a side-angle-side (SAS) triangle. However, we don’t know yet the angle between the two sides but we know that a horizontal line has an angle of 180° and we also know that in the second travel, the geese went up to 50° toward the north. The supplementary angle of 50° is 130° since it sums up to 180°.

180° – 50° = 130°.

Thus, the angle between the line is equal to 130°.
A = 130°

4. Since it is an SAS triangle, we use the formula:

a² = b² + c² – 2bcosA

We are looking for a which is the displacement in this case.


a² = 4.5² + 4.5² – 2(4.5)cos(130°)
a = 6.8km

The displacement is equal to 6.8km.


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Which of the following apply to carbon? Select all that apply. Carbon chains can form branches and cross-links. Carbon compounds can be rings. Carbon monoxide is an organic compound. Each arrangement pf carbon atoms corresponds to a different compound. Carbon dioxide is an organic compound.


Answer : The number of moles of water formed can be, 128 moles

Solution : Given,

Moles of hydrogen gas = 138 moles

Moles of oxygen gas = 64 moles

First we have to calculate the limiting and excess reagent.

The balanced chemical reaction will be,

2H_2+O_2rightarrow 2H_2O

From the balanced reaction we conclude that,

As, 2 moles of hydrogen gas react with 1 mole of oxygen  gas

So, 138 moles of hydrogen gas react with frac{138}{2}=69 moles of oxygen  gas

But the given moles of oxygen gas is 64 moles.

That means oxygen gas is a limiting reagent and hydrogen gas is an excess reagent.

Now we have to calculate the moles of water.

From the reaction we conclude that,

As, 2 moles of oxygen react to give 1 mole of water

So, 64 moles of oxygen react to give 64times 2=128 moles of water

Therefore, the number of moles of water formed can be, 128 moles


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In recent years, composting has become more common in American households. Composting involves decomposing organic matter in order to make a soil additive. Organic matter such as food waste and yard trimmings can be placed in a compost pile or bin. Over time, bacteria and other decomposers break down the organic matter into humus, an important component of fertile soil. Which of the following is a benefit of composting? A. Households that compost will attract rodents and pests to their yards. B. Households that compost may be adding hazardous waste to their soil. C. Households that compost will produce less solid waste. D. Households that compost will use less water for their lawns.



The replicating molecule of most of the living organisms including humans is DNA (deoxyribonucleic acid).

DNA is the double helical structure made up of nucleotides.

A nucleotide is formed when a deoxyribose sugar is attached to the nitrogenous base (adenine, guanine, cytosine or thymine) with the help of glycosidic bond and to phosphate group with help of ester bond.

Two nucleotides are joined with the help of phospho-di-ester bond in which sugar and phosphate group act as the backbone of the structure and nitrogenous base is used for base pairing.

The two strands of DNA are held together with the help of base pairing. Nitrogen base of one strand makes a hydrogen bond with the nitrogenous base of the second strand.  

Adenine always bonds with thymine with the help of 2 hydrogen bonds and guanine always bonds with cytosine with the help of three hydrogen bonds.

The two strands are always anti-parallel to each other.

The average length of one helical turn is around 34 angstroms.


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In addition to getting rid of dead animals and plants, what other helpful function do decomposers perform? They require chlorophyll and sunlight to perform their function. They build complex organic molecules from simple inorganic ones. They make glucose and oxygen from carbon dioxide and water. They recycle organic matter so it can be used by producers.


Answer: O₃


The term isoelectronic means same number of electrons.

Then you need to count the number of electrons in the given species NO₂⁻.

You have to count the number of electrons of N (nitrogen) atoms, the number of electrons of two O (oxygen) atoms, and the adjust for the negative charge of the ions.

The atomic number of N is 7, meaning that each atom has 7 protons and 7 electrons.

The atomic number of O is 8, meaning that each atom has 8 protons and 8 electrons.

The negative charge of the ion means that it has one extra electron, which is the responsible for the negative charge.

Therefore the total number of electrons of the ion NO₂⁻ is 7 + 2 (8) + 1 = 24.

Note that that 24 = 3 x 8, so 24 is the number of electrons in 3 atoms of oxygen.

The moleucle O₃ is an allotrope of the oxygen. (an allotrope is a a form of an element with different structure and physical properties in the same physical state).

Therefore, the allotrope of oxygen isoelectronic with NO₂⁻ is O₃ (ozone)


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What is the cycling of nutrients between the ground and living organisms? A) When nutrients from the ground are taken by living organism and returned when those organisms die and decompose. B) When fertilizer is added to the soil by humans. C) When planted deplete the soil of all its nutrients and can no longer grow there. D) When limited numbers of living organisms are available to weather rock and contribute organic matter.



The correct answer will be option-C.


The living organism uses energy to survive through performing metabolic reactions. The metabolism is the characteristic feature of living organisms which enables the organism to survive.

Organism performs the chemical reactions which could help make the energy molecules in the cell and help store energy in the energy molecule like Adenosine triphosphate or ATP.

The energy is stored in the high energy bonds between two phosphate groups which get utilized by the organism after a breakdown which releases a high amount of energy.

Thus, Option-C is the correct answer.


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A newspaper reporter has written an article in favor of organic gardening and composting. The editor wants to be sure to present a balanced viewpoint. Which source will most likely present a counterclaim to the article? A. “15 Tips on Composting in Your Backyard” by the state agricultural department B. “The Ecological Case Against Organic Farming,” in the New York Times C. “The Top 10 Reasons to Support Organic Farming in the 21st Century” on D. “A Buyer’s Guide to Organic Meats and Poultry” by a natural foods supermarket chain



A. He led readers through events in the order they really happened  


William Wordsworth’s “I meandered Lonely as a cloud” manages the obviously basic experience of the verse I with numerous daffodils developing in a lovely scene and outperforming everything in their polish and pulchritude. However this impression has such a profound and serious impact on the onlooker that the last never forgets this uncommon experience when the person in question is “In empty or in thoughtful state of mind”  

The poem comprises of 24-line versifying tetrameter stanzas which are additionally sorted out into four sets, with a quatrain hidden the rhyme plan of a substitute rhyme, and a rhyming couplet.


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You are investigating an organic compound. You discover that it is an aromatic compound often used as flavoring. What type of compound is it likely to be?


Symbol          Name                    Symbol          Name

H+              hydrogen ion            H-              hydride

Li+             lithium ion             F-             fluoride

Na+             sodium ion              Cl-             chloride

K+              potassium ion           Br-             bromide

Rb+             rubidium ion            I-              iodide

Cs+             cesiumion              O2-              oxide

Be2+             beryllium ion           S2-              sulfide

Mg2+             magnesium ion           Se2-             selenide

Ca2+             calcium ion             Te2-             telluride

Sr2+             strontium ion           N3-              nitride

Ba2+             barium ion              P3-              phosphide

Ra2+             radium ion              As3-             arsenide

Ag+             silver ion

Zn2+             zinc ion                Al3+             aluminum ion


Note that the letters in an ion’s name before the -ideending is the stem.

For example, the stem for bromide is brom-. Also, just in case, the P for

phosphide is a capital P.



Symbols and Charges for Monoatomic Ions



Variable Charge


        Systematic nameCommon                  Systematic name Common

Symbol  (Stock system)  name            Symbol  (Stock system)  name

Cu+     copper(I)       cuprous         Hg22+    mercury(I)      mercurous

Cu2+     copper(II)      cupric          Hg2+     mercury(II)     mercuric

Fe2+     iron(II)        ferrous         Pb2+     lead(II)        plumbous

Fe3+     iron(III)       ferric          Pb4+     lead(IV)        plumbic

Sn2+     tin(II)         stannous        Co2+     cobalt(II)      cobaltous

Sn4+     tin(IV)         stannic         Co3+     cobalt(III)     cobaltic

Cr2+     chromium(II)    chromous        Ni2+     nickel(II)      nickelous

Cr3+     chromium(III)   chromic         Ni4+     nickel(IV)      nickelic

Mn2+     manganese(II)   manganous       Au+     gold(I)         aurous

Mn3+     manganese(III)  manganic        Au3+     gold(III)       auric


Symbols and Charges for Polyatomic Ions


Formula         Name                    Formula         Name

NO3-             nitrate                 ClO4-            perchlorate

NO2-             nitrite                 ClO3-            chlorate

CrO42-           chromate                ClO2-            chlorite

Cr2O72-           dichromate              ClO-            hypochlorite

CN-             cyanide                 IO4-             periodate

MnO4-            permanganate            IO3-             iodate

OH-             hydroxide               IO-            hypoiodite

O22-             peroxide                BrO3-            bromate

NH2-             amide                   BrO-            hypobromite

CO32-            carbonate               HCO3-            hydrogen carbonate (bicarbonate)


SO42-            sulfate                 HSO4-            hydrogen sulfate (bisulfate)

SO32-            sulfite                 HSO3-            hydrogen sulfite (bisulfite)   

C2O42-            oxalate                 HC2O4-           hydrogenoxalate (binoxalate)

PO43-            phosphate               HPO42-           hydrogen phosphate     

PO33-            phosphite               H2PO4-           dihydrogen phosphate   

S2O32-            thiosulfate             HS-             hydrogen sulfide         

AsO43-           arsenate                BO33-            borate

SeO42-           selenate                B4O72-            tetraborate

SiO32-           silicate                SiF62-           hexafluorosilicate

C4H4O62-  tartrate


C2H3O2-           acetate  (an alternate way to write acetate is CH3COO-)


There is one positive polyatomic ion. It is NH4+and is called the ammonium ion.


Note: Writing just the plus sign or minus sign for ions with +1 or -1 charges is



Binary Compounds of Metals with Fixed Charges

Given Formula, Write the Name


A binary compound is one made of two different elements. There can be one of each element such as in NaCl or KF. There can also be several of each element such as Na2O or AlBr3.

Please remember that all elements involved in this lesson have ONLY ONE charge. That includes BOTHthe cation AND the anion involved in the formula.

Points to remember about naming a compound from its formula

1.        The order for names in a binary compound is first the cation, then the anion.

2.        Use the name of cation with a fixed oxidation state directly from the periodic table.

3.        The name of the anion will be made from the root of the element’s name plus the suffix “-ide.”



Example 1: Write the name of the following formula: H2S

Step #1 – Look at first element and name it. Result of this step = hydrogen.

Step #2 – Look at second element. Use root of its full name ( which is sulf-) plus the ending “-ide.” Result of this step = sulfide.

These two steps give the full name of H2S. Notice that the presence of the subscript is ignored. There are other types of binary compounds where you must pay attention to the subscript. Those compounds involve cations with variable charges. Your teacher will tell you which ones you will be held responsible for.


Example 2: Write the name of the following formula: NaCl

Step #1 – Look at first element and name it. Result of this step = sodium.

Step #2 – Look at second element. Use root of its full name ( which is chlor-) plus the ending “-ide.” Result of this step = chloride.


Example 3: Write the name of the following formula: MgBr2

Step #1 – Look at first element and name it. Result of this step = magnesium.

Step #2 – Look at second element. Use root of its full name ( which is brom-) plus the ending “-ide.” Result of this step = bromide.

Note the presence of the subscript does not play a role in this name.


Example 4: Write the name of the following formula: KCl

The first part of the name comes from the first element symbol: potassium. The second part of the name comes from the root of the second symbol plus ‘-ide,’ therefore chlor + ide = chloride.

This compound is named potassium chloride


Example 5: Write the name of the following formula: Na2S

First symbol is Na, so the first part of the name is sodium. (Note the presence of the subscript does not play a role in this name.) Second element is sulfur (from the symbol S), so the name is sulf + ide = sulfide.