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3151.

Why sodium kept immersed in kerosene oil

Answer» Because sodium is highly versatile element it start burning automatically by coming in contact with oxygen in air.
3152.

Transportation in humans

Answer» Transportation is done with the help of blood. For eg:- Transportation of oxygen through blood to different parts of body etc.\xa0
3153.

Why Rainbow is appear as semicircle shape

Answer»
3154.

On what factors focal length of a lens depends upon?

Answer»
3155.

Why we should add water to mug in activity 1.7

Answer»
3156.

Lime water

Answer» Calcium carbonate I CaCo3 is known as lime water
Calcium hydroxide is known as lime water
3157.

List various steps in the formation of fossils

Answer» Carbon dating methord
When dead remains are burried deep in earth\'s crust for many years then fossils are produced
3158.

Differentiate between soft soaps and hard soaps

Answer»
3159.

What you mean by managment

Answer»
3160.

Limitation of newland

Answer» Limitations of newland octaves lawThis law was applicable upto calcium onlyIt was assumed that no more elements would be discovered in future but later several new elements were discovered which were not fit into his tableTo fix elements into his table he even put two elements in just one slot moreover he put elements of different chemical property in the same note
3161.

Why we should add to mug in activity1.7

Answer»
3162.

What is mean by human evolution?

Answer»
3163.

Why any elements form bond

Answer» To combine with other element such that to attain stability.
3164.

How does pregnancy occur

Answer» Due to the fertilization of male gamate(sperm) with female gamate(ova/egg) forming a zygote.
3165.

reftax action

Answer» thanks to all fir answering ne
In which the boby move. quickly by some incident
Path taken by nerve impulses reflex action
3166.

Board exam k liy oswaal papers k s h

Answer»
3167.

Why astronauts not able to see the twin

Answer» Earth have air particles but in space there have no air particle therefor
3168.

Define hermaphrodite

Answer» A hermaphrodite is an organism that has reproductive organs normally associated with both male and female sexes
3169.

Carbon and it\'s compound

Answer» Type correct/valid questions.
3170.

Why does a bee sting cause pain and itching?

Answer» Because it contains formic acid
Bee sting causes pain and itching because because it punctures an acid to the body known as "formic acid".
3171.

Dihybrid inheritence explanation

Answer»
3172.

What is difference between breathing and respiration

Answer» Breathing means only exchange of air, while respiration contains formation of energy.
3173.

What do you mean by precipitation reaction

Answer»
3174.

What is the principle of electric generator

Answer» It works on the principal of electromagnetic induction
3175.

How can naming equation of carbon compound?

Answer»
3176.

What is dispersing of light

Answer» Splitting of white light into seven different colours is called dispersion of light
3177.

What is a food chain

Answer» A series of organisms feeding on each other is called food chain
It is a linear network of living organisms in a community through which energy is transferred in the form of food that is it describes relationship of organisms about \'who eats whom\'
3178.

What is acitic acid ?

Answer» It is also etanoic acid
Acetic acid formula is CH3COOH it is organic acid it is weak acid it\'s ph value is 4.0 it\'s name is vinegar
Acetic acid is a organic acid ..its other name is methanoic acid ..its formula is CH3COOH ...we can say it as methanol ...
CH3COOH IS THE FORMULA FOR ACTIC ACID
3179.

How to get full marks

Answer» Read only for 3 to 4 hours. Make notes.When you like to study then study
3180.

Balancing equations

Answer» Balancing any equations means that by making atomic number equal in both in reactant and products. EgH2+O2-H2O2H2+O2 - 2H2O
3181.

Hamare gharo mai paripath dahra awartit kya hoti hai

Answer»
3182.

Why cabon form covalent bond only

Answer» ⏺️It\'s because carbon is tetravalent. ⏺️It is not possible to remove 4 electrons or, to add as many as 4 atoms to a carbon atom. ⏺️Since carbon atoms can achieve the inhert gas electron arrangement only by sharing of electrons, therefore, carbon always form covalent bonds.
Because the carbon atoms can achieve the inert gas electron arrangement only by the sharing of electrons that\'s why carbon always form covalent bonds.
The valency of carbon is 4 so to gain or loose electrons lots of amount of energy is needed as a result it has to share electrons and thus forms covalent bonds
3183.

Give an example of flowers which have both stamens and carpels

Answer» Hibiscus flower ...
Hibiscus
3184.

Where does implantation takes place in human

Answer» Uterous
3185.

What is the chemical equation of photosynthesis

Answer» 6CO2+12H2O=C6H12O6+6O2+6H2O
3186.

What is sucrose

Answer»
3187.

Reaction of nitric acid with matals

Answer» Mn ki bhi ho ho jayegi
Mg + 2 HNO3 → Mg(NO3)2 + H2
3188.

Why acid don\'t react with non- metal??answer guys

Answer» Where do you live prity...sachii batana..
This is because when a substance reacts with acid, it provide electron to H+ ion produced by the acid. Non metals are themselves acceptor of electron so there is no way they can donate electrons to the hydrogen ion of the acid. Hence non metal do not react with acid.
The non-metals do not react with dilute acids. This is because when a substance reacts with acids, it provides electrons to the H+ ions produced by the acids.
3189.

What is an fuse wire

Answer» In electronics, a fuse is an electrical safety device that operates to provide overcurrent protection of an electrical circuit.
3190.

What difference on concave mirror & concave lence

Answer»
3191.

Uses of solar energy

Answer» Solar energy have many usage like- (a) it is a renewable resource so it can\'t be miss on earth (B) by the help of solar cooker we can easily prepared our food by natural method(c)by the help of solar cell we can convert solar energy into electrical energy(d) it is also used for water heating
3192.

I want cbse 10th sample papers 2018

Answer» Type on Google cbse.academics.in sample papers class10 2017-18
3193.

Why planet are not twinkle

Answer»
3194.

Why common salt is added in soap

Answer»
3195.

Whatis isotope

Answer» Czdhv
3196.

What is TT?

Answer» Tall plant
3197.

Which type of movement are for taste

Answer» Gustatory movement
3198.

What happen when CO2 is passed through Lime water with reason ???

Answer» A milky substance CaCo3 is formed.
Carbon dioxide passed into limewater gives a milky solution. This is due to the insoluble suspension of calcium carbonate formed. The milkiness disappears since calcium bicarbonate is water-soluble.
3199.

Write chemical equation for fire extinguisher

Answer» 2 NaHCO3(aq) + H2SO4(l) -> Na2SO4(aq) + 2 H2O(l) + 2 CO2(g)
3200.

What is he?

Answer» Used to refer to a man , boy or male animal
Used to refer to a man, boy, or male animal previously mentioned or easily identified.
Dedicated to a boy or male.