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61101.

What is canvex mirror

Answer» If the other cut part of the hollow sphere is painted from inside, then its outer surface becomes the reflecting surface. This kind of mirror is known as convex mirror. Convex mirror is also known as diverging mirror as this mirror diverges light when they strike on its reflecting surface. Virtual, erect and diminished images are always formed with convex mirrors, irrespective of the distance between the object and the mirror. Apart from other applications, convex mirror is mostly used as rear view mirror in vehicles.
61102.

Metal and non metal chemical property

Answer» Chemical properties of metals:1.Metals form basic oxides.2.Metals react with water or steam to produce hydrogen gas except copper,gold and silver which do not react with water or steam.3. Metals react with dilute acids to produce hydrogen gas\xa0except copper,gold and silver which do not react with dilute acids.Chemical properties of non metals:1. Non metals form acidic oxides.2.Non metals do not react with water or steam.3.Non metals do not react with dilute acids.
Metals are hard lustrous mellable ductile and good conductor of heat and electricity while Non metals are soft dull brittle and bad conductor of heat and electricity .
Metal are lustrous and nonmetal and not Shiny metals are hard and nonmetals are soft except diamond
61103.

How to make balance equation

Answer» The hit and trial method
61104.

Factor that determine the quality of the wool

Answer»
61105.

Who matter is formed

Answer» i have formed
61106.

when resistors are connected in parallel then prove that p=p1+p2+p3 where p donetes to power

Answer»
61107.

Calculate no of electrons constituting 4c of charge

Answer» -2.49 *10^-19
61108.

Ohms law define

Answer» According to this law current flowing through a conductor is directly proportional to the potential difference between the ends of the conductor
Ohms law states that the current flowing through a conductor is directly proportion to potential difference across the end of the conductor provided temperature and other physical properties remain same
61109.

What is an volt meter

Answer» It is connected in parallel
Volt meter is an device which is used to measure potential difference in a circuit across at the end of any to point. It is always connected in parallel
The potential difference is measured by an instrument called voltmeter...
61110.

Adding of acid into water is exothermic or endothermic reaction

Answer» It is never exotermic and endotermic reation
Maybe exathermic
61111.

Why methane is purest fossil fuels

Answer»
61112.

What is a strange lets ?

Answer»
61113.

What happened when pennis is going under the vegina

Answer»
61114.

Why is respiration called exothermic reaction

Answer» Because it involves the generation of energy which releases heat as the food burns to form ATP(Adenosine triphosphate).
61115.

How the urine is make in nephron

Answer» Nephron is made up of bowman\'s capsule, tubule and glomerulus. The renal artery brings impure and oxygenated blood to the glomerulus. The glomerulus filters this blood. During filtration, substances like glucose, amino acids, salts, water & urea present in the blood pass into the bowman\'s capsule and then enter the tubule of the nephron. The tubule is surrounded by a large no. of cappillaries. The useful substances like glucose, amino acids, water and salts etc are reabsorbed by the tubules which are taken back by the cappilaries. Only the waste substances such as urea, unwanted salts and excess water remain in the tubult. The liquid left behind the tubule of the nephron is urine. The nephron carries this urine in the urine collecting duct in the kidneys from where it is carried to the ureter and then to the urinary bladder.
61116.

Colour of ZnSO4

Answer» ZnSo4 is colourless ..
Colourless
61117.

Defination of resistivity

Answer» Resistivity is a Resistance of a conductor whose lenght is 1metre and Area is 1metre square
It is the property of a material by which the material is made up of
It is the resistance offered by a metal of length 1m and area of cross section 1m square
Resistivity can be defined as the resistance of a conduction material having unit area of cross section and unit length.
61118.

How reproduction takes place in plants

Answer» Sexual reproduction in flowering plants involves the production of male and female gamete the transfer of the male gamete to the female ovules in the process calles pollination fertilizers happens in a ovules grow into a seed withon a fruit
61119.

Find the total number of electron in 250ml of water at 4 degree celcius?

Answer» 789
61120.

What is reation?

Answer» Something thought in response to a situation or event
61121.

What is science?????????????????

Answer» Something which gives us knowledge to our environment and our surroundings r caleed science
Anything that deals with envirnoment and what happens in our day to day life is called science
61122.

How to balance CHM. EQ.

Answer» Despacito
By L hs =Rhs Let Equation is Zn+h2so4------------^ ZnSO4 +H2 Elements Lhs rhs ZN 1 1 H 2 2 S 1 1 O 4 4
61123.

How to do blance the any equation

Answer» Make them in box then see carefully atoms number then put number outside the box remember that number will multiply to atoms in the box then make them equal
61124.

Chapert 1

Answer»
61125.

Why tere is little bit mixing of oxgenated and deoxygenate blood in cold blooded animal

Answer» It is necessary in mammals and birds to separate oxygenated and de-oxygenated blood because this makes their circulatory system is more efficient and helps in maintaining constant body temperature.
61126.

What is an organism

Answer» Any living being which perform life process called organism
Any living thing is an organism..
Living beings
61127.

What is acid ? Why we use acid?

Answer» Acid is formed by letin word acidus which means taste to sour.
61128.

Describe E=mc square

Answer»
61129.

Explain transpirational pull theory

Answer»
61130.

Difference between resistance and resistivity?

Answer» \tParameterResistanceResistivityDefinitionMaterial’s property that provides an obstruction to the flow of currentResistance of a material having specific dimensionsSymbolRPSI UnitOhmsOhms-meterFormulaR = V/I or, R = ρ(L/A) V = Voltage, I = Current, ρ = Resistivityρ = (R×A)/L R = Resistance, L= Length, A = Cross-sectional areaDependenceTemperature, Length, Cross sectional area of conductorTemperatureApplicationsResistance’s property is useful in sensors, fuses, heaters etcResistivity is effective as a quality control test\t
61131.

Practicle syllabus of biology

Answer» *****
61132.

Why frog lives in water which respiratory organ is used by it for respiration

Answer» Because frog respirates from its moist skin,it perform cutical respitation..
61133.

Why we have not hairs on palm

Answer»
61134.

Balance the equationCaCO3 +HCl = CaCl +H2O +CO2

Answer» But hydrogen atoms are not baanced
Already balanced there is no need to balance
CaCO3 + HCl = CaCl + H2O + CO2 there is no need to balance it as it is already balanced .See the oxygen atoms at both sides are equal.
61135.

What happen when we react gold with hcl

Answer» Gold doesn\'t react because it is less reactive than hydrogen
Why gold doesnt react??
Gold does not react with dilute acids.So when we will react gold with HCL there will be no reaction.
61136.

Halogen group

Answer» Bromo, BrCloro,ClFloro,FIodo ,IAll of these are attached to alkyl group
61137.

What happened when acid dropped on iron

Answer» When acid dropped on iron it converts into ruste.
61138.

Does dark rection require light reaction?

Answer» Yes, it needs energy produced (NADPH2) during light reaction is used to break CO2 in dark reaction.
No it doesn\'t require
61139.

What is the action of saliva on starch?

Answer» The starch is broken down into sucrose in our mouth by action of saliva and the digestion of starch starts here
61140.

Identify the type of chemical reactionA->B+CAD+CD -> AD+CB

Answer» First is decomposition reaction and next is double displacement reaction
61141.

How many bones in small child?

Answer» 300 bones are there in a small baby
300 bones are there in a infant
300 bones
300 bones
61142.

Which type of compounds present in water?

Answer» 2H2+O2------ 2h2o
H2 + O2----- H2O
H2 and o2 gives. H2O
61143.

what is stomata and write its two function

Answer» Stomata are the tiny pores present on the surface of leaves . 1)It is responsible for opening and closening of stomata pore as stomata pore opens when guard cells swell and the somata pore closes when guard cells shrink. 2)It allows massive exchange of gases like co2.
stomata is the opening pores which allow to respirate * it allows to exchange of gases *it allows in transpiration
61144.

What do you understand by snails low

Answer» Laws of refraction of light(i) Incident ray, refracted ray and normal at the point of incidence all lie in the same plane.(ii) Ratio of sine of angle of incidence to the sine of angle of refraction is a constant quantity known as refractive index of the medium.{tex}\\mu=\\frac{\\sin\\;i}{\\sin\\;r}{/tex}
61145.

How respiration is done in human body

Answer» Human Respiratory System: The human respiratory system is composed of a pair of lungs. These are attached to a system of tubes which open on the outside through the nostrils. Following are the main structures in the human respiratory system:Nostrils: There two nostrils which converge to form a nasal passage. The inner lining of the nostrils is lined by hairs and remains wet due to mucus secretion. The mucus and the hairs help in filtering the dust particles out from inhaled air. Further, air is warmed up when it enters the nasal passage.Pharynx: It is a tube like structure which continues after the nasal passage.Larynx: This part comes after the pharynx. This is also called the voice box.Trachea: This is composed of rings of cartilage. Cartilaginous rings prevent the collapse of trachea in the absence of air.Bronchi: A pair of bronchi comes out from the trachea; with one bronchus going to each lung.Bronchioles: A bronchus divides into branches and sub-branches; inside the lung.Alveoli: These are air-sacs at the end of bronchioles. Alveolus is composed of a very thin membrane and is the place where blood capillaries open. This is alveolus; where oxygen mixes with the blood and carbon dioxide exits from the blood. The exchange of gases; in alveoli; takes place due to pressure differential.
61146.

Why volmeter are conneced parallel to resistance

Answer» Voltmeter has high resistance so if we connect it in series it would not allow the current to pass through it so we connect it in parallel
61147.

State function of digerstive antinze

Answer» Digestive enzymes amylase are present in our mouth which are made in salivary glands which help to convert starch into smaller carbohydrates that is maltose
61148.

What is oxidation? Give example ? How use it?

Answer» Addition of oxygen and reduction of hydrogen
Oxidation is addition of oxygen ORRemoval of hydrogen
61149.

Give a balanced equation of photosynthesis

Answer» 6o2+6co2 in the presence of sunlight and chlorophyll gives c6h12o6+6co2+6h2o
61150.

Which value separate the wind pipe from food pipe

Answer» Alveoli