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ong>EXPLANATION:

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ong>Answer:

Dehydrating agent may REFER to: a chemical compound used to drive a dehydration reaction. a DESICCANT a SUBSTANCE that ABSORBS MOISTURE from its surroundings.

Explanation:

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is UR ANSWER..

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ong>ANSWER:

reduction

The chemical process used for obtaining a metal from its oxide

is reduction. In this process, metal OXIDES are reduced by using suitable reducing AGENTS such as carbon or by highly REACTIVE METALS to displace

the metals from their oxides. The chemical

process used for obtaining a metal from its oxide is reduction.

ong>Answer:

ELECTROPOSITIVITY can be DEFINED as the tendency of an atom to donate electrons and form POSITIVELY charged cations

option A is the CORRECT answer may be its helps you

Explanation:

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ong>Answer:

Law of constant proportion

EXPLANATION:

Law of constant proportion is stated here.

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ong>ANSWER:

there are 5 significant figures

Explanation:

because zero after DECIMAL is significant.

and the figures lying between 2 significant figures are also significant.

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The process by which a living being utilizes the food to get energy is called respiration. Respiration is an oxidation reaction in which carbohydrate is oxidized to produce energy. Mitochondrion is the site of respiration and the energy released is STORED in the FORM of ATP (Adenosine TRIPHOSPHATE)The process by which a living being utilizes the food to get energy is called respiration. Respiration is an oxidation reaction in which carbohydrate is oxidized to produce energy. Mitochondrion is the site of respiration and the energy released is stored in the form of ATP (Adenosine triphosphate)The process by which a living being utilizes the food to get energy is called respiration. Respiration is an oxidation reaction in which carbohydrate is oxidized to produce energy. Mitochondrion is the site of respiration and the energy released is stored in the form of ATP (Adenosine triphosphate)The process by which a living being utilizes the food to get energy is called respiration. Respiration is an oxidation reaction in which carbohydrate is oxidized to produce energy. Mitochondrion is the site of respiration and the energy released is stored in the form of ATP (Adenosine triphosphate)Mark me BRAINLEIST

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12+32=44

44g of CO2 will be formed

Explanation:

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ong>ANSWER:

Oxidation number of HYDROGEN is +1. As nitrogen is more electronegative than CARBON so its oxidation number is -3. NET charge on compound is zero.

Now we can find oxidation number of carbon:

Let oxidation number of carbon is x,

1+(−3)+x=0

x=+2

(C)...

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ong>ANSWER:

the BUNDLE of stick is EASY to break the STICKS is it to

ong>Explanation:

• Synthetic FIBERS are more durable than most natural fibers and they readily pick-up DIFFERENT dyes.

• Natural fibers are much more sensitive than synthetic blends.

• Synthetic fibers BURN more readily than natural which is a disadvantage of synthetic fibers.

• They are non-biodegradable whereas natural fibers are easily degradable.
• They are stain FREE and cheap.

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ong>Explanation:

Enzymes are complex biochemical COMPOUNDS MADE up of monomers

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electrostatic force of attraction which holds the two oppositely charged ions together is called the ionic bond.

A chemical bond is formed between two atoms by the complete transfer of one or more electrons from one atom to the other as a result of which the atoms attain their NEAREST inert gas configuration.

There are primarily three ways in which two atoms combine to lose energy and to BECOME stable. One of the ways is by donating or ACCEPTING electrons to complete their octet configuration. The bond formed by this kind of combination is known as an ionic bond or electrovalent bond. This kind of bond is formed when one atom GAINS electrons while the other atom loses electrons from its outermost level or orbit.

Electrovalent Bond

Electrovalent bonds are produced when electrons are transferred from atoms of one element to atoms of another element, producing positive and negative ions. The bond which is formed by the transfer of electrons between the atoms is called electrovalent bond or ionic bond. Electrovalent bonds are only formed between metals and non-metals. Electrovalent bonds are not formed between two non-metals.

In simple words electrovalent bond involves the transference of a certain number of electrons to another dissimilar atom which has a tendency to gain electrons so that both acquire stable inert gas configurations. The electrostatic attraction always tends to decrease the potential energy. Hence, the potential energy of the SYSTEM is much less than it was before the formation of an ionic bond.

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ong>ANSWER:

mass of 1/4 mole = 10u

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101 X 101 X 101

Explanation:

ong>ANSWER:

Teri MAAA KA bsdk

Explanation:

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hdnsge bsyenxrnafnsn ehebehe rurbe rjjrb RUR rhfhfhdnd

ong>ANSWER:

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After the 4s is full we put the remaining four ELECTRONS in the 3d orbital and END with 3d4. Therefore the expected ELECTRON configuration for CHROMIUM will be 1s22s22p63s23p44s23d9. Note that when writing the electron configuration for an atom like Cr, the 3d is usually written before the 4s.

sorry i dont UNDERSTEND

ong>ANSWER:

COORDINATE BOND:-

A covalent CHEMICAL bond between two atoms that is produced when ONE atom shares a pair of electrons with another atom lacking such a pair.

ELECTROVALENT BOND:-

electrovalent bond is a bond which is is formed by the complete transfer of electrons between the two atoms

For hydrogen like species when jump TAKES from any excited state to GROUND state (n=1), line produced in that case is called a Lyman SERIES line. If transition occurs from 3rd or above level to second level then corresponding lines produced are called Balmer lines.

ong>ANSWER:

electric CONDUCTOR - PH3

covalent - aivi3

Plant CELL needs cell wall whereas animal cell do not because the plants NEED rigid structure so that they can grow up and out . All CELLS have cell membranes, and the membranes are flexible. So animal cells can have VARIOUS SHAPES, but plant cells only have the shapes of their cell walls.

no

Explanation:

no it is not because it

Hi

Explanation:

How are you..

I am FINE

ong>Answer:

acid produce alcohol in SOLUTION which is RESPONSIBLE for ACIDIC PROPERTIES.

out of my SYLLABUS......

SOO sorry

ong>ANSWER:

a. to KILL harmful germs

Explanation:

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term is most often applied to liquids but ALSO applies to SOLIDS and gases. For example, WATER and ETHANOL are miscible because they mix in all proportions. By contrast, substances are said to be immiscible if there are certain proportions in which the MIXTURE does not form a solution.

ong>Answer:

1. after heating BLUE colour copper sulphate loses its colour and become WHITE in colour.. 2. on heating it LOOSES it's water molecules ATTACH to the solution earlier.

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ong>Answer:-

Ionic polarisiblity occurs in ionic metals. It occurs when ELECTRIC field is APPLIES to ionic MATERIALS then cations and ANIONS get displace in opposite DIRECTION giving rise to net dipole moment

Explanation:

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ong>ANSWER:

hi FRIENDS who are you

Explanation:

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PLZ tell in ENGLISH......

ong>Explanation:

हदय वक्षगुहा में अधर तल की ओर "मध्य से कुछ बायी ओर स्थित होता है| यह लगभग 18 सेमी लम्बा और 9 सेमी चौडा होता है। हृदय मे चार वेश्म होते है, दो अलिन्द तथा दो निलय| हृद पेशियाँ (CARDIAC muscles) सदैव बिना रुके, बिना थके एक निश्चित लय से सिकुड़ती-फैलती रहती हैं|

हदय चारों ओर से दोहरे हृद्यावरण (pericardium) से घिरा होता है। दोनों झिल्लियों के मध्य हदयावरणी तरल (pericardial fluid) भरा होता है। यह हदय को बाह्य आघातों से बचाता है| हृदय का अग्र चौडा भाग अलिन्द (AURICLE) तथा पश्च सँकरा भाग निलय (ventricle) कहलाता है|अलिन्द तथा निलय ह्र्द खाँच (coronary sulcus) द्वारा अलग प्रतीत होते हैं|हृदय के दाएँ अलिन्द में शरीर के विभिन्न र्भागों से आया अशुद्ध रक्त भरा होता है। हृदय के बाएँ अलिन्द में फेफडों से आया शुद्ध रक्त भरा रहता है। दोनों निलय एक अन्तरा निलय खाँच द्वारा बँटे दिखाई देते हैं| बायाँ निलय बड़ा और अधिक पेशीय होता है| यह महाधमनी द्वारा शुद्ध रक्त को शरीर में पम्प करने का कार्य करता है| दायाँ निलय फुफ्फुस धमनी (pulmonary artery) द्वारा अशुद्ध रक्त को फेफडों में पहुंचाता है| निलय का अग्रभाग अलिन्दीय उपांग (auricular appendix) से ढका रहता है|

Structure of Human Heart

हृदय की आन्तरिक संरचना (Internal Structure of Heart):

हृदय वक्षगुहा में फेफडों के मध्य स्थित होता है। यह दोहरे हृदयावरण (pericardium) से घिरा होता है। दोनों झिल्लियों के मध्य हृद्यावरणीय तरल (pericardial fluid) भरा होता है।

अलिन्द (auricle) एक अन्तरा-असिन्द पट (inter auricular septum) द्वारा दाएँ तथा बाएँ अलिन्द में बँटा होता है। अन्तरा- अलिन्द पट पर एक अण्डाकार गट्टा होता है जिसे फोसा ओवेलिस (fossa ivalis) कहते है। दाएँ अलिन्द में पश्च महाशिरा तथा अग्र महाशिरा के छिद्र होते हैं। पश्च महाशिरा के छिद्र पर यूस्टेकियन कपाट (eustachian valve) होता है। अग्र महाशिरा के छिद्र के ही पास एक छिद्र कोरोनरी साइनस (coronary sinus) होता है। इस छिद्र पर कोरोनरी कपादृ या थिबेसिंयन कपाट (auriculo VENTRICULAR node) होती है। दाएं अलिन्द में अग्र तथा पश्च महाशिराओं के छिद्रों के समीप स्पन्दन केन्द्र या पेस मेकर (pace maker) होता है। इससे हृदय में संकूचन प्रक्रिया प्रारम्भ होती है। अन्तरा-अलिन्द पट पर अलिन्द-निलय गाँठ (auriculo ventricular node) होती है। यह हृदय संकुचन की तरंगों को निलय में प्रेषित करती है। बाएँ अलिन्द में दोनो फुफ्फुसीय शिराएँ एक सम्मिलित छिद्र द्वारा खुलती है।

एक अन्तरा-निलय पट (inter-ventricular septum) निलय को दाएँ व बाएँ निलय में बाँटता है। निलय का पेशी स्तर अलिन्द की अपेक्षा बहुत मोटा होता है। बाएँ निलय का पेशी स्तर सबसे अधिक मोटा होता है। निलय की भिति में स्थित मोटे पेशी स्तम्भों को पैपीलरी पेशियों (PAPILLARY muscles) कहते है। दाएँ निलय से पल्मोनरी चाप निकलती है। यह अशुद्ध रुधिर को फेफडों में पहुंचाती है। बाएँ निलय से कैरोटिको सिस्टैंमिक चाप निकलती है, जो सारे शरीर में शुद्ध रुधिर पहुंचाती है। इन चापों के आधार पर तीन-तीन छोटे अर्द्धचन्द्राकार कपाट (semilunar valves) पाए जाते हैं|

ong>Answer:

Types of Natural RESOURCES:

Renewable Resources: These are resources such as air, water, and sunlight that refill naturally.

Non-Renewable Resources: These are resources like fossil FUELS and minerals that do not restock reform very slowly.

Biotic: These originate from living beings and ORGANIC material like plants and animals.

Abiotic: These come from non-living things and non-organic material. These comprise air, water, and land as well as metals like iron, COPPER, and silver.

Natural resources are ALSO categories such as actual

#Rehan

QUESTION no2

B) answer

HCl+h2o--->>H30+. + CL-

ochemical reaction: The chemical reaction which PROCEED with the ABSORPTION of light energy are called photochemical reactions. Example: PHOTOSYNTHESIS in plants.

An electrochemical reaction is a process in which electrons flow between a solid electrode and substance, such as an ELECTROLYTE. This flow triggers an electric current through the ELECTRODES, causing the reaction to liberate or absorb heat

ong>Answer:

Two or more molecules display isomerism when they have the same number of atoms of each TYPE but have these bonded together either in a different sequence (structural isomers) or with a different ARRANGEMENT in space (stereoisomers). There are two kinds of stereoisomerism: geometrical and optical.

Since isomers have different molecular shapes, isomeric fragrance molecules often have quite different odour characteristics, even though their structures are quite similar. One example is the group of isomers with the chemical FORMULA C10H18O.

Ten CARBON atoms

This combination of elements can form alcohols or aldehydes. Roll your mouse over the highlighted names to see the structures in the PICTURE on the left.

Figure 2.4. Isomers of C10H18O:

Geraniol

Linalool Nerol

Citronellal

Alcohols

Geraniol, nerol and linalool are all alcohols. They tend to have floral odours.

Geometric isomers

Geraniol and nerol are geometric (cis-trans) isomers of each other. Geraniol has a waxy, sweet rose odour; nerol also smells of sweet rose with a citrus tang.

Structural (position) isomer

Linalool is a structural (position) isomer of geraniol and nerol. It has two optical isomers. R-linalool has an odour of bergamot and lavender.

Structural (functional group) isomer

Citronellal is a structural (functional group) isomer of Geraniol, nerol, and linalool. It is an aldehyde and it has two optical isomers. It has a citrus odour and is used as a soap perfume and in insect repellants.

Explanation:

Geraniol and nerol are geometric (cis-trans) isomers of each other. Geraniol has a waxy, sweet rose odour; nerol also smells of sweet rose with a citrus tang. Linalool is a structural (position) isomer of geraniol and nerol

ong>Answer:

YEASTS have TWO main USES in FOOD production: baking and making alcoholic beverages.

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6.324 × 10^5

Explanation:

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NACL: ONE sodium atom, one chlorine atom in a formula unit ... In terms of atomic masses: in a total of 142.02 parts by MASS of sodium SULFATE, 45.98 ... 2) Calculate the percentage composition, by mass, of the following.