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A person shoots with a gun, he hears an echo of the sound made by the shooting after 3 seconds , how much distance is covered by the sound if its speed is 350 m/s?

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What is hapticity?

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Q. Which is more acidic among the following?

A) Acetic acid

B)Bromoacetic acid

C)Chloroacetic acid

D)Fluroacetic acid

Plz support ur answer with a reason

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how will we get w=yt? plz explain

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KMnOreacts with oxalic acid according to the equation 2MnO4- + 5C2O42- + 16H------>2Mn2+ =10CO2 + 8H2O. Here 20 ml of 0.1M KMnO4 is equivalent to

A)50 ml of 0.5 M C2H2O4

B)20 ml of 0.1 M C2H2O4

C)20 ml of 0.5 M C2H2O4

D)50 ml of 0.1 M C2H2O4

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numbe of moles MnO4- required to oxidise 1 mole of ferrous oxalate completely in acidic medium will be

A)0.2 moles

B)0.6 moles

C)0.4 moles

D)7.5 moles

plz explain

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A student measures the thickness of a human hair by luking at it through a microscope of magnification 100. he makes 20 observations and finds that average width of hair is 3.5mm. what is the estimate of the thickness of hair?a)0.0035mmb)0.035mmc)0.01mmd)0.7mmplz explain

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A student measures the thickness of a human hair by luking at it through a microscope of magnification 100. he makes 20 observations and finds that average width of hair is 3.5mm. what is the estimate of the thickness of hair?a)0.0035mmb)0.035mmc)0.01mmd)0.7mmplz explain

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A student measures the thickness of a human hair by luking at it through a microscope of magnification 100. he makes 20 observations and finds that average width of hair is 3.5mm. what is the estimate of the thickness of hair?a)0.0035mmb)0.035mmc)0.01mmd)0.7mmplz explain

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I agree my  answer is wrong but then y is it that global warming is resulting in the rise of water level by melting of polar ice caps?

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Fundamentals of Physics by Resnick,Halliday & Walker
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plz explain , any1

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thanx 4 the effort T. now i dont hav any  confusion regarding this.

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Li+ being the smallest among alkali metals will attract the anionic charge cloud the most resulting in greater distortion of anion which further leads to covalent character due to increased tendency of electron sharing rather than complete transfer of electrons

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According 2 Fajan's rule...............When two oppositely charged ions approach each other closely, the positively charged cation attracts the outermost electrons of the anions and repels its positively charged nucleus. This results in the distortion or polarization of the anion following some sharing of electrons between the two ions, i.e., the bond becomes partly covalent in character.

that is greater the distortion of anion greater is the covalent character

Li+ being the smallest among alkali metals will attract the anionic charge cloud the most resulting in greater distortion of anion which further leads to covalent character

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every1 is aware of the fact that global warming is a threat to our planet as it is resulting in the melting of polar ice caps. which is further causing rise in level of water in oceans. it is the reason that coastal regions r in danger of getting submerged. according 2 above criteria, when ice melts it results in rise of water level.

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an excerpt from net

piezoelectric  effect is understood as the linear electromechanical interaction between the mechanical and the electrical state in crystalline materials with no inversion symmetry. The piezoelectric effect is a reversible process in that materials exhibiting the direct piezoelectric effect (the internal generation of electrical charge resulting from an applied mechanical force) also exhibit the reverse piezoelectric effect (the internal generation of a mechanical strain resulting from an applied electrical field).

Piezoelectricity  is the charge that accumulates in certain solid materials (notably crystals, certain ceramics, and biological matter such as bone, DNA and various proteins) in response to applied mechanical stress. The word piezoelectricity means electricity resulting from pressure.

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The un its of length, velocity and force r doubled. Which of the following is correct change?

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thank u, i understud the explanation but i still hav the doubt

if error in measurement of momentum of particle is 2%, then error in measurement of kinetic energy wud hav been

if i apply the same expression 4 the given question then

MY ANSWER IS WRONG but i cant get wat is the problem with the solution

plz rectify it

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NCERT states that butter is a type of water in oil emulsion , another example of it is cream

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