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68901.

What is reproduction with example ?

Answer»
68902.

Puberty in girls

Answer» Pelne ke yogya ho gayi ladkiyaan Jawani mein chodna Pela peliiJawani ka josh
At age of 11or 12
68903.

Fe3O4 is called as " Iron(II)(III) oxide. What is the meaning of this II & III

Answer» ít íѕ вαѕєd upσn thє nσ σf vαlєncч thєч hαvє
Valency
It is the name given by IUPAC (International Union of Pure and Applied Chemistry ).It is so called because it is formed by the reaction between ferrous oxide and ferric oxide i.e.,Iron(II) and (III) oxide [ feo+fe2o3]
68904.

Who many elements are there in present

Answer» 118
118
118
118
68905.

will there be preboard exam in our schools in September

Answer» May be it is depending on school.
68906.

How many elements in World

Answer» 119metals
There r 119 elements.Where, Metals are only 90Metalloids are only 7Non metals are only 22
119
115
118
68907.

Sample paper Ch 10

Answer» You got it from googlr
68908.

Which contains more hydronium ions diluted acid or concentrated acid

Answer» Concentrated
Dilutef acids
Concentrated acid
Diluted acids
Dillute acids
68909.

Why does zinc plate develop when placed in copper sulphate solution for a few hours/day ?

Answer» Zinc is more reactive metal than copper.That\'s why zinc displace copper from it salt solution and form zinc sulphate.
This happens because of\xa0the reaction of Zinc metal with copper sulphate solution. Zinc is more reactive then copper thus zinc displace copper from its salt solution and form zinc salt.
Hours
68910.

What is meaning of harmon

Answer» Hormone Means : Chemical Messagers
a regulatory substance produced in an organism and transported in tissue fluids such as blood or sap to stimulate specific cells or tissues into action.
Harmone is a type of chemical which helps to grow over body. It is secreted by pitutiary gland.
What is harmon? Explain this.
Hi!
68911.

What is a different Oxidation and reduction

Answer» Oxidation - addition of Oxygen or removal of hydrogen.Reduction- removal of oxygen or addition of hydrogen.
Oxidation is a reaction that removes an electron from a substance, reduction is a reaction that adds electrons to a substance. ... Reduction is when the total number of electrons increases in a reaction, oxidation is when the total number of electrons decreases in a reaction.
Oxidation is the process where there is addition of oxygen and reduction of hydrogen amd reduction is the process where there is reduction of oxygen and addition of hydrogen
Oxidation is a process which involves adding of oxygen.Reduction is a process which involves adding of hydrogen and removal of oxygen.
The adding of oxygen or removel of hydrogen is called oxidation,the removel of oxygen and adding of hydrogen is called reduction
68912.

Explain dilute solution in detail

Answer» A concentrated acid which is dissolved in water is dilute acid
Dilute solution is the solution which has higher concentration of water.
any substance that dissolve in water completely is called dilute solution
The solution which contains maximum amount of water in it is called dilute solution. THANKS
68913.

Explain different types of indicators with example

Answer» Natural main litmus and olfactory mein onion vi aiega
Hope it helps
Indicators are divided into three types Natural indicator , Synthetic indicator and olfactory indicator..Natural indicator : turmeric , petals of some flowers , red cabbage leaves (shows colour Change)Synthetic Indicator : methyl orange and Phenolphthalein (shows colour Change)Olfactory Indicator : Clove , Vanilla Essence ( Change in odour)
68914.

Formulae for ethanol

Answer» C2H5OH
C2H5OH
Ch2h5oh
C2H5OH
68915.

What is the example of dilute acid

Answer» Dilute sulphuric acid
A dilute acid is that in which the concentration of the water mixed in the acid is higher than the concentration of the acid itself. For instance, 5% sulfuric acid is a dilute acid
Dilute hydrochloric acid,dilute sulphuric acid
Dil H2SO4
68916.

कौन सा पदार्थ प्रकाश की उपस्थिति में विघटित हो सकता है

Answer» Silver chloride
Silver chloride
C6h12o6+6o2_6co2+6h2o+e
68917.

CaCo3 name

Answer» Calcium carbonate
Calcium carbonate (caco³)
Calcium Carbonate(CaCo³)
Calcium carbonate
Calcium Carbonate ( Lime Stone)
68918.

Write five uses of washing soda

Answer» 1 cleansing agent for domestic purpose like washing clothes 2 used for removing permanent hardness of water3 used in the manufacturing of sodium compound such as borax(Na2B4O7)4 used in manufacturing of glass paper5 used for manufacturing of soap. Hope this will help...
68919.

Why should a magnesium ribbon cleaned before burning in air?

Answer» Because magnesium ribbon develops a layer of magnesium oxide when it reacts with oxygen present in air
To remove layer of mgo it is done soo the reaction can done properly
Because magnesium ribbon reacts with oxygen to form a protective and unreactive layer of magnesium oxide which prevents it from burning.
To remove the protective layer of magnesium oxide of magnesium ribbon
Because magnesium ribbon reacts with oxygen to form a protective and unreactive layer of magnesium oxide which prevents it from burning.
68920.

Explain me atomic number

Answer» The atomic number of an element is equal to the number of protons present in the nucleus of its atom. Atomic number of Hydrogen is Z-1
Atomic number is determined or calculated by their no•of electron
68921.

Which of the following are not ionic compound 1.kcl 2.hcl 3.ccl 4.nacl

Answer» CCl4
Ccl
Kcl and ccl
68922.

What refraction by spherical lenses

Answer» Refraction is the change in direction of light when it passes from one medium to another. The working of lense is based on the refraction light when they pass through it. A lens is a transparent material bound by two surfaces, of which one or both surfaces are spherical. It implies that a lens is bound by at least ine spherical surface. The other surface of such lenses would be plane. A lens May have two spherical surfaces, blugging outwards.
68923.

8 )the respiratory surface of earthworm is its skin

Answer» Yes
True
68924.

Which of the following is an example of uniform mountain

Answer» Mountain or motion
Give option
68925.

Which of the following is an example of uniform Mein Milton

Answer»
68926.

The outermost layer of the human check cell is

Answer» plasma membrane.
68927.

The auto most layer of the human check cell is cell wall

Answer» Plasma membrane
68928.

Respiration through gills is known as

Answer» Brachial Respiration
Bronical respiration
Bronchial respiration
68929.

Which cells normally contains chloroplast

Answer» palisade mesophyll cell
68930.

Chemistry activity question chapter 2

Answer»
68931.

Write a chemical reaction of heating of cu and fe

Answer» Cu +02-CuO
68932.

What is animal

Answer» An animal is a living thing that can move and breath. There are different types of animal such as lion, goat, sheep, etc.
Animal is a living things. Ex- human,tiger
68933.

Partial break down of Glucose molecule into

Answer» Glucose is a six carbon sugar. In glycolysis, glucose is split into two three-carbon molecules called pyruvate.
68934.

Explain nephron

Answer» It is the functional unit of kidney
*A kidney is composed of an enormous number of\xa0uriniferous tubules. They are also known as\xa0nephrons\xa0or\xa0renal tubules\xa0or\xa0kidney tubules.Nephrons are the structural and functional units of the kidney.Each kidney is formed of about 1 million nephrons.Nephrons are held together by a connective tissue*.Structure of nephron:Each nephron is made of a glomerulus and a renal tubule.Glomerulus:It is a\xa0tuft of anastomosing blood capillaries\xa0formed by the fine branches of the\xa0afferent arteriole.\xa0These capillaries of the glomerulus again unite to form the\xa0efferent arteriole.The afferent arteriole is wider than the efferent arteriole.The afferent arteriole brings blood into the glomerulus, while the efferent arteriole collects blood from the glomerulus.Renal Tubule:The renal tubule comprises the following regions:Bowman’s CapsuleThe Bowman’s capsule lies in the cortex.It is a thin double-walled, cup-like depression.It is the blind end of the nephron.The glomerulus is located in the concave depression of the Bowman’s capsule.The Bowman’s capsule and the glomerulus together are called Malpighian Capsule or Renal Capsule.The outer layer of the Bowman’s capsule is made of flattened epithelial cells.The inner layer is in close contact with the glomerulus and bears special cells called podocytes.Podocytes have many feet-like processes called pedicels and minute slit-like pores called slit pores. Proximal Convoluted Tubule (PCT)PCT lies in the\xa0cortex.It is also known as the\xa0first convoluted tubule.The Bowman’s capsule continues into the PCT.It is lined with a layer of columnar epithelial cells.The columnar cells are with numerous microvilli to increase the surface area of absorption. Loop of HenleIt lies in the\xa0medulla.It is U-shaped.It is not convoluted.It has a descending limb and an ascending limb.Each limb has a thick region towards the cortex and a thin region towards the medulla.Thick regions are lined with columnar epithelial cells.Thin regions are lined with flat epithelial cells. Distal Convoluted Tubule (DCT)It lies in the\xa0cortex.Its short terminal part is called a collecting tubule.The collecting tubule opens into the\xa0collecting duct.DCT in lined with ciliated columnar epithelial cells.The\xa0collecting duct\xa0receives the contents of many renal tubules.The\xa0collecting duct\xa0is a larger duct which receives collecting tubules of several nephrons.Collecting ducts pass into the renal medulla and join with each other to form the\xa0ducts of Bellini.The ducts of Bellini run through the renal pyramids and open into calyces.All calyces open into the pelvis.From the pelvis, urine is carried to the urinary bladder through the ureters.
68935.

How alveoli helps in exchange of gasses

Answer» The walls of the alveoli is folded and provide a\xa0large surface area for gaseous exchange. It also contains an extensive network of blood vessels which help in easy exchange of gases.\xa0
Alveoli are the sacs which are help in the exchange of gases such as oxygen and carbon dioxide.alveoli has rich/good network of blood capillaries which help in diffusion of both the gases.hope that answers your question.
The Fall of the Allo wheel is pole and provide a large surface area the copper glass of exchange it also contain and extinguish network of blood vessels which help in easy exchange of gases
The alveoli are thin walled and richly supplied with a network of blood capillaries to facilitate the exchange of gases between blood and the air filled in alveoli.
68936.

What is the formula for slaked lime

Answer» Ca(oH)2
Ca(OH)2
Ca(OH)2
caoh2
Ca(OH)2
68937.

The image shows healing of a wound.Based on the image what explains the process?

Answer» Ok...so here we have a big problem as I don\'t know what image u have this doubt about...But if it is what I think it is...then here you go:- Whenever we get wounded platelates help in clotting the blood at the place where we were wounded. It\'s a slow and gradual process.Hope it helped.
68938.

Which is a only non metal in liquid state

Answer» Bromine
BROMINE
Bromine-non metalMetal-mercury
Bromine
Bromine
68939.

Does the notes provided in this app cover full chapter??

Answer» Yes
Yes
S
No
68940.

How to identify metal and non-metal

Answer» From their physical and chemical proprety
From their physical properties
Metals always have 1,2,3 electrons in outermost/valence shells whereas non-metals have 4,5,6,7 electrons in their outermost shell
Eg for non metal
From ductility , sonorous,malleablity , lustrous, good conductor and good of heat and electricity
68941.

Write short note on common salt and bleaching powder

Answer» Bleaching powder is a pale yellowish powder existing with a strong smell of chlorine.It is soluble in water but due to the presence of impurities, we never observe a clear solution.its chemical name as Calcium hypochlorite.Common salt is formed by the reaction between hydrochloric acid and sodium hydroxide. It exists as an important raw material for the production of various chemical compounds such as caustic soda (sodium hydroxide), bleaching powder Ca(OCl2)etc.,
68942.

Please send me in short define human digestive system

Answer» human digestive system, system used in the human body for the process of digestion. The human digestive system consists primarily of the digestive tract, or the series of structures and organs through which food and liquids pass during their processing into forms absorbable into the bloodstream.
68943.

Mind map on light reflection and refraction and life process

Answer» Hey...if you need mind maps Oswal reference books is a good source
68944.

Which is the first enzymes to get mixed with food

Answer» Salivary gland
Salivary amylase
Amylase
Salivary amylase
S amylase
68945.

Kidney fuction?

Answer» Remove the waste product from body
Main excretory organ of body
Excrete the waste in our body
kidneys also remove acid that is produced by the cells of our body and maintain a healthy balance of water, salts, and minerals—such as sodium, calcium, phosphorus, and potassium—in our blood.
Helps in excretion of wastes from our body
68946.

What does humman body need term part system for

Answer» Our bodies consist of a number of biological systems that carry out specific functions necessary for everyday living. The job of the circulatory system is to move blood, nutrients, oxygen, carbon dioxide, and hormones, around the body. It consists of the heart, blood, blood vessels,arteries and veins.
68947.

The focal length of combination of convex lens of power 1 D and concave lens of power -1.5 D is

Answer» 200cm
3M
2m
2m
2m
68948.

Why sky is blue in day time

Answer» The sky is blue in day time because scattering of light
Due to the scattering of blue light. The distant of earth from pole is shorter to comparsion from equator. And also the blue and violent light scatter most that\'s why the sky appears blue in daytime...
Due to the scattering of blue light. The distant of earth from pole is shorter to comparsion from equator. And also the blue and violent light scatter most that\'s why the sky appears blue in daytime...
Because blue light is more scattered than other colour
The sunlight that reaches the earth\'s atmosphere is scattered in all directions by the gases and dust particles present in the atmosphere So blue light is scattered in all directions by the tiny molecules of air in Earth\'s atmosphere. This is the reason sky appears blue.
68949.

Wavelength of red colour

Answer» ????? ???????? ?????
700 nm
High
What is the colour of magnesium ribbon
650
68950.

Under which mode of nutrition does amoeba come, holozoic, saprophytic or parasitic ?

Answer» Holozoic
Holozoic
Holozoic
holozoic
Amoeba comes under holozoic mode of nutrition because there is ingestion then digestion..