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  • 1 answers

Vivek Bharti 1 month, 3 weeks ago

Mai Unacademy plus subscription liya hu wahi se kr rha hu bro
  • 1 answers

Chethan .S 7 months, 1 week ago

Promethium `(Pm)`m
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  • 1 answers

Sia ? 1 year, 6 months ago

Instantaneous Rate vs Average Rate
Instantaneous rate is the rate of a chemical reaction that is measured as the change of the concentration of reactants or products during a known time period. Average rate is the rate of a chemical reaction that is measured as the change of the concentration of reactants or products during the whole time period of the progression of the chemical reaction.
Time
Instantaneous rate is measured for a particular moment or for a very short time period. Average rate is measured for a longer time period.
Formula for Calculation
Instantaneous Rate of Change = Lim (t→0) [Δ(concentration of reactant or product) /Δ(time)] Average Rate of Change = Δ(concentration of reactant or product) /Δ(time)
  • 1 answers

Shilpa Devi 1 year, 6 months ago

Temperature, pressure
  • 2 answers

Aman Rajput 7 months, 3 weeks ago

It is a tiny partical of atom

Sia ? 1 year, 8 months ago

Matter is everything around you. Atoms and compounds are all made of very small parts of matter. Those atoms go on to build the things you see and touch every day. Matter is defined as anything that has mass and takes up space (it has volume).
  • 2 answers

Aditi Dora 2 years ago

Camphor acetone napthlene

Gaurav Seth 2 years, 3 months ago

The Changing of a solid directly into vapours on heating,and of vapours into solid on cooling is called as sublimation.

The solid substance which undergoes sublimation is called sublime.

The solid obtained by cooling the vapours of the solid called a sublimate.

For Ex:camphor,Iodine,Ammonium Chloride,Naphthalene etc.

  • 1 answers

Meghna Thapar 2 years, 4 months ago

Tyndall  effect  can  be  defined  as the  scattering  of  a  beam  of  light by  colloidal  particles  present  in  a colloidal solution. This  effect can  be  observed  when  a  fine  beam  of  light  passes  through  a  small  hole  in a dark  room. This effect occurs due to the scattering of light by particles of dust or smoke present in the air.

The Tyndall effect can also be observed when sunlight passes through the canopy of a dense forest. In  the  forest,  the  mist  contains  tiny  droplets  of water  which  act  as  colloidal  particles  dispersed  in  the air.

C11
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Yogita Ingle 2 years, 5 months ago

  • An atom consists of heavy positively charged nucleus. The whole mass of the atom is concentrated in the nucleus.
  • The electrons in an atom revolve around the nucleus in definite circular paths called orbits or energy level.
  • Each energy level is associated with definite amount of energy.
  •  The change in energy takes place when electron jumps from one energy level to another energy level.
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  • 1 answers

Gaurav Seth 2 years, 6 months ago

 

 Acids  Bases
i) Acids are sour in taste.  i) Bases are bitter in taste.
 ii) Acid turns blue litmus to red.  ii) Bases turn red litmus to blue.
 iii) Acid is a substance which contains hydrogen ion H+.  iii) Bases are substances which contain hydroxyl ion OH−.
  • 2 answers

Vikhyat Bhati 1 year, 7 months ago

It is formed when white light is passed through a substance and transmitted light is analyzed by spectroscope. It gives dark lines on bright background. It is always discontinuous.

Rishik Bhuvanesh 2 years, 6 months ago

It is formed when white light is passed through a substance and transmitted light is analyzed by spectroscope. It gives dark lines on bright background. It is always discontinuous.
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Sri Ram 2 years, 4 months ago

All the organic part play a good role
  • 3 answers

Rishik Bhuvanesh 2 years, 6 months ago

13 atoms will be in one plane

Rishik Bhuvanesh 2 years, 6 months ago

12 atoms will be in one plane
13 atoms present in one plane
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  • 3 answers

Rishabh Roy 2 years, 4 months ago

By saying ,"vfycygchivhovtudyrsihgouffystaouftdlfudgoffufigjgjfjgjvjgjgjgih".?? Hope it helps.....?

Vishal Adhikari 3 years, 1 month ago

By increasing your study time

Dddd Ddddd 3 years, 2 months ago

By not giving exam
Hi
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