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66101.

Explain different ways to induce current in a coil .

Answer» By changing area linked with coil. And by changing angle between them
66102.

Which sources produces alternating current??

Answer» Battery ,cell
66103.

Write the uses of graphite and diamond

Answer» Uses of Diamond:\tDiamond is used as a gemstone in jewellery, ornaments and crowns.\tDiamonds also have several industrial applications. Diamonds being very hard is used in tools that cut glass and drill hard rocks.\tDiamonds are also used as abrasives to cut and polish other materials and gemstones.\tDiamonds are also used in knives which are used to perform sensitive operations like the cataract operation.\tBecause of its heat sensitive properties, diamonds are used in highly sensitive\xa0thermometers and windows of space shuttle.\tThin diamond membranes are used to cover the openings in x-ray machines and lasers.\tDiamonds are also used in the manufacture of fine wires, like those used in electric toasters.\tDiamond is used in heat sinks, which help conduct the heat away from sensitive parts of high performance microelectronics.Uses of graphite:\tGraphite in its powdered form is used as a lubricant in heavy machines.\tIt is also used to make black paint and inks due to its dark, grey colour.\tIt is used for making lead in pencils.\tGraphite being a very good conductor of electricity is used in the manufacture of\xa0electrodes, which found use in dry cells and electric furnaces.\tGraphite when combined with plastic produces a light-weight and strong composite material, which is strong Composite Material in space craft parts and Dish Antenna,\xa0Tennis Racquet.\tGraphite crucibles or melting pots are used to melt brass, aluminium and many other nonferrous metals.\tGraphite bricks are used as moderators in atomic reactors.
66104.

Reaction in organic chemistry which has names with examples

Answer»
66105.

Difference between armature and solenoid

Answer» Armature:\tIt is the rotation part of a motor or generator.\tFunction of armature in motor: Electrical/magnetic to mechanical.\tFunction of armature in generator: Mechanical in electrical.Solenoid\tIt is wounded in helical shaped coil.\tThe wire used to make coil in insulated wire.
66106.

Ph paper kya h

Answer» ph paper is universal indicater which show the concenteration of hydrogen in soiution.
66107.

How does molecular mass effect density of a compound~

Answer» By directly not inversely
66108.

What r the enzymes secreted by duodenum??

Answer» Thnx avni
Enterogasteron &CCKPZ(Colycysto kinin pancreo zymin)
Thnx to u both
Cck
CCK. I m sure
I think gastric juices but I am not sure.
66109.

all numericals

Answer» ??
???????
66110.

List the step of preparation of temporary mount of a leaf peel to observe stomata

Answer»
66111.

What use of bio gad

Answer» See in page 144 of S chand ch-sources of energy 3rd para
Is it biogas
66112.

What is function of embyro

Answer» Embryo sac is the structure which develops from the megaspore of the plant ovule. Embryo sac is also called as the female gametophyte. Embryo sac bears both embryo plant and the endosperm after fertilisation. There are seven haploid cells in the embryo sac. They include three antipodal cells, one central cell (formed by fusion of 2 polar nuclei), two synergid cells and one egg cell.
Embyro is a next stage of zygote
66113.

Why does not moon fall on earth

Answer» Because there is no gravitiy in the universe.
Moon doesn\'t fall in earth because it has an orbit
66114.

What do u mean by Stakeholders?? question from(Management of Natural resources)

Answer» Thanks Anushka
People who have common interest about forests.
66115.

Why appendix called vestigial organ

Answer» Because it has lost all its functions and is of no use.
66116.

Why stars seem higher than they actually are explain

Answer» Due to atmospheric refraction as optical density of air increases towards earth surface, therefore light from the stars travel rarer to denser layers, bending everytime towards normal.on producing the final refracted ray backward the apparent star position is higher than the actual star position
66117.

Name a substance whose resistance almost reemains unchanged by increase in temperature

Answer» Wood and air and some metal alloys
66118.

Cause of moypia

Answer» Elongattion of eye boll and excessive curvature of eye lens.
Elongation of eye boll
This is the cause of nearsightedness, (i) elongation of eye ball(ii) excessive curvature of eye lens.
(i) elongation of eye ball(ii) excessive curvature of eye lens
66119.

Why rainbow takes an curve shape in the sky ?why can take an straight shape

Answer» Jab 2 durke Bhai milte h tho aise hi baate karte h
Jai gurjar\'s bhai
Wah What a answer #naam ke hai
After dispersion all seven color have different speeds ..so.....
Because earth is spherical,so is its atmosphere.therefore as medium of refraction of light rays is curved ,after dispersion colours also spit in a curved shape
66120.

Explain the gas stove have inlets for air

Answer» Gas stove have inlets for air because due to inlets , oxygen supply comes and gas burns with blue flame. but if inlets are not provided, then no oxygen will be there and will produce a sooty flame.
66121.

What is the mode of nutrition in human being

Answer» Holozoic mode of nutrition
66122.

How Can we learn periodic table easily

Answer» Accordibg to their properties in the basis of Ln5,or just mug up?
U mean elements name learning . According to their atomic number
66123.

What happen when quicklime is added to water. Write the balance equation

Answer» CaO+2H2O=Ca(OH)2+H2when quick lime is react with water to produce hydrogen gas and slaked lime
And heat is also evolved
Calcium hydroxide (slaked lime) is formed and hydrogen gas is evolved.
Slaked lime cao +h2o=caoh+h2
66124.

what is resistiviity

Answer» Resistivity is the property of the conductor due to which it offers resistance to the flow of current through it. It is measured by the resistance offered by 1m length of wire of that material of area of cross section 1 m2.\xa0Resistivity of the material depends only on its material and temperature.
It is numerically equal to resistance of a wire whose length is 1 m and area of cross section is 1m square
It is numerically equal to resistance of a wire of length 1m and area of cross section 1m square.
It is the property of the material of conductor to resist the flow of electrons.
66125.

What are feelings is it related with science

Answer» Feelings are the result of releasing of harmone by any change in surrounding. Like when we see something or someone, listen words
Science*
Yes ut is related with scuence
66126.

What is 4lime

Answer» Nothing..
66127.

What are the similarities between modern periodic table and mendleev periodic table??

Answer» Ye mujhe bhi pata h ki both r periodic table
Most of the elements placed in modern priodic table are same as placed by Mendeleev.H is placed similarities inspite of many confusions about its placement.Both have groups and periods.
Both are preodic table
That there is not a fixed place of hydrogen ...
66128.

Why is yhe use of iodized salt advisable.

Answer» Becaause iodised salt.contains iodine and iodine is a major need of our. body
66129.

How to abord 1 month pregnancy

Answer»
66130.

What is Condom??

Answer» It is a barrier method for birth control and protection from sexually transmitted diseases . It is used by males by putting them as a covering on their reproductive part .it prevents the sperms from meeting ovum
You can expend the answer... For getting the marks
Condom is a barrier method to control the Birth Control
A thin rubber sheath worn on a man reproductive part during reproduction . It is act like a barrier it protects against infections
Yes i am not able to get it what you are trying to say can anyone please answer my question??
I does not explain it in more detail
Protective cover and it act as barrier
66131.

Why is advise to take iodien salt

Answer» Iodine is necessary for making thyroxine hormone which control the rate of metabolism of carbohydrates and fats and proteins
For releasing the hormone
Because iodine is necessary for making thyroxine hormone in the thyroid gland, its deficiency could lead to a disease called goitre.
Due to the deficiency of throxin harmone, which released with the help of iodine from thyroid gland. From this we suffering from goitre
66132.

What is asexual reproduction .

Answer» The reproduction in which the offsprings arise from a single organism is known as the asexual reproduction.
OR A mode of reproduction in which single parent creates a new organism which is exact copy of parent called clone.
Thank you very much
1) required single parent2) no or vary less variation 3) it is fast process and takes less time
Asexual reproduction is a type of reproduction by which offspring arise from a single organism, and inherit the genes of that parent only; it does not involve the fusion of gametes, and almost never changes the number of chromosomes. Asexual reproduction is the primary form of reproduction for single-celled organisms such as archaea and bacteria. Many plants and fungi sometimes reproduce asexually.
66133.

Name some metals where corossion is useful and how?

Answer» Aluminium is a metal which is useful for its corrosion. It react with atmospheric moisture and oxygen to form aluminum oxide which is a hard layer and prevents the aluminum from further damage, and for this property of aluminium it is used to make utensils and other things........Hope it will help you ☺☺
Copper and aluminum due the formation of thick layer of oxide
66134.

How is plaster of paris is Different From gypsum

Answer» Plaster of paris contains half molecules of water. but gypsum contains 2 molecules of water . POP is obtained when gypsum is heated at 100 ℃
66135.

Reasons for appearance of variations among the progeny formed by sexual reproduction

Answer» The two reasons for appearance of variation among the progeny formed by sexual reproduction is mentioned below :-1. The progeny formed due to sexual reproduction has characteristics from mother as well as father. Hence because of this the characteristics differ and result in variation.\xa02. The genetic material is exchanged between chromosomes before forming of zygote. Deoxyribonucleic acid (DNA) exchange in the chromosome. This results in forming of variation in the progeny.\xa0The above two are major reasons for appearance of variation among the progeny formed by sexual reproduction
66136.

What is carbon .

Answer» Carbon is an element. Atomic no.is 6 .and atomic mass is 12 . Valency is 4 and versatile in nature...
It is a element that is the basis if all human beings and it has the atomic no 6 and valency 4
Carbon is an element with atomic number 6 and it. has symbol c . It is also a non-metal.
66137.

How is *** of a child determined in human beings.

Answer» Chromosomal *** is determined at the time of fertilization; a chromosome from the sperm cell, either X or Y, fuses with the X chromosome in the egg cell. Gonadal *** refers to the gonads, that is the testis or ovaries, depending on which genes are expressed.
Is it *** in the above line , this determine or depending on their sperms whether it is X and Y . If it is XY then it is boy and if it is XX then it is a girl.
66138.

Write two point of difference b/w electrical energy and electric power.

Answer» Acha gya Ashish and thanks for answering
Electrical energy is product of power and time but ele. Power is termed as energy consumed per unit time.
Aur test kaisa gya Chetna
Electric Energy:1.It is the capacity to do work 2.It is measured in watt hour or kilo watt hour. Electric power:1.It is the rate of doing electric work 2.Electric power = VIWhere V=Potential differenceI= current
66139.

Sir what is the dispersion of light

Answer» Splitting of white light into seven component colours when passed through glass prism
The splitting of white light into seven colour when it passes through a glass prism is called dispersion of light
When the white light traveled through the prism it broke down into its seven constituents or known as VIBGYOR(Violet , Indigo ,Blue ,Green, Yellow, Orange ,Red).This breaking of light into its seven constituents is known as Dispersion.
The splitting of light into its constituent colors is known as dispersion of light
66140.

Sir why we say thar trait is inherited

Answer» Trait means \'characters\'. The charcters that we get from our parents are known as inherited traits.Trairs are of two types - inherited trait and acquired trait . Inherited trait can be transferred to next generation, but acquired trait can\'t be transferred.
66141.

Sir what is 10 percent law

Answer» According to ten percent law , only the ten percent of total energy entering into a particular tropic level is available for the next tropic level.
Ten percent law states that when any bigger trophic level organism eats smaller trophic level organism then bigger trophic level organism will get only ten percent of energy from smaller trophic level organism.
During the transfer of energy through trophic levels there ia loss of energy .no transfer of energy is 100% accounding to this law,only 10 percent of energy entering a particular trophic level of organism is available for transfer ro the next higher trophic lwvwl
66142.

Any one is frome jnv And from where

Answer» My dear brothers or sister my name is vishal and my sername is Aryan You may google on sernam
What\'s ur name Vishal or Aryan
And I am from Lucknow
Hey my friend is in jnv talodhi
66143.

What is the formula of ester.

Answer» CH3COOC2H4
Ch3COOC2H5
66144.

why mendel chooses pea plant for his experi ment?give two reasons

Answer» Because 1. It can easily grown. 2 .Their produces in short time
These grow quickly Have number of easily detectable contrasting charectersVISHAL AryanJnv
Easily available and reproduced in short span of.time and he cant do his exp. on humans because it would be risky . So......
Because it shows contrasting characteristics and is self pollinating also it has short life span.
telll answer
66145.

What is the difference between baking powder and baking soda ??

Answer» Baking soda is sodium bi carbonate which is bitter in taste. So to avoid bitter taste it is mixed with an edible acid like tartaric acid. The salt formed is baking powder which has pleasant taste.
Baking powder is a mixture of baking soda and tartaric accid
66146.

Why do the cyclo hydrocarbon are named as cycloalkanes and their formula is CnH2n

Answer»
66147.

What is the breaking and makind of a chemical bond called?

Answer» Making of chemical bonds is called chemical bonding and breaking of chemical bonds is called chemical dissociation.
66148.

what is the function of ciliary muscle in a human eye?

Answer» thanx
Helps in contracting and rellaxing the suspendory ligaments and this ligaments controls the eye lens .since the image dist. Cant be changed so the focal length is changed by adjusting the eye lens
Ciliary muscles change the thickness of aye-lens while focusing
66149.

How can the age of fossik be determined

Answer» By carbon dating method and digging method
By carbon dating
By 2 methods 1 is carbon dating and 2 is layering
66150.

Transportation is necessary evil.

Answer»