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1901.

define distance

Answer» The whole length travelled by any object on given interval of time
Total path covered by an body
Total path length covered by an object
1902.

What are the two postulates of cell

Answer» 1) It is formed from old mother cell.2) It is the structural and fundamental unit of life
1903.

What is substance ?

Answer» Substances are classified into two types. They are,Pure Substance: A substance which is made of one kind of particle.Examples - iron, aluminium, silver and gold.Mixtures: A substance which contains two or more different particles is known as mixtures.Example: Salt solution is made up of two components, salt and water. Therefore,salt solution is a mixture. Substances which are made of two or more matters and which can be separated by physical methods are known as mixtures, such as mixture of salt and water, mixture of sugar and water, mixture of different gases, air, etc. In a mixture, components do not combine chemically or through any chemical change. In a mixture, components do not lose their properties.
1904.

Why is parenchyma called the permanent tissue ?

Answer» They are called permanent because they will not further divide into more cells.
1905.

What is a stomata ??

Answer» Stomata are tiny pores or openings on the surface of leaves.
Stomata are tiny pores present on the surface of the leaves of plants.
Stomata is a special type of pore opening on the leaves of the plants.
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1906.

Motion graphics card and solutions of activity 8.9

Answer»
1907.

What is dispersed phase and dispersing medium?

Answer»
1908.

What is haemodailysis

Answer»
1909.

Name any two unicellular organisms

Answer» Amoeba, paramecium bacteria and euglena... I gave u four
Amoeba
Amoeba and paramecium
1910.

10 practical based questions based on activities chapter 1

Answer» Which subject
1911.

Pressure

Answer» Force per unit area is called pressure
1912.

Evaporation is directly proportional to surface area why?

Answer»
1913.

What is function of meiosis

Answer»
1914.

Co2

Answer» Carbondioxide
1915.

Why do we see water droplets around a cold water bottle

Answer» Because of the atmospheric humidity
1916.

What is the full form of STD

Answer» Sexually transmitted diseases
1917.

What is the definition of velocity

Answer» Velocity is change in displacement
A vector quantity that denotes the rate of change of position with respect to time, or a speed with the directional component.
1918.

What is the physical state of matter

Answer» Solid, liquid or gas
1919.

drive 2nd equation of motion by graphical method

Answer»
1920.

What is the effect of the following on the rate of diffusion . a- Temperature b-Density of liquid

Answer» Temperature
1921.

What is drone ?

Answer» Drone is flying object.which controlled by a rc remote.see in youtube if want to know avout it\'s functions.
1922.

Write the structure and functions of different cell organelles

Answer»
1923.

Ngujkhyi

Answer»
1924.

A=u-v/t prvoe anyone

Answer»
1925.

Which organelles have double membrane

Answer» Nucleus
1926.

Sand is a solid if so,why it is mixed with other particles?

Answer» Sand is a solid. The particles of sand do not mix with other items or substances. Other substances appear to be mixed in sand, but this is not true, as, the substances do not get combined or dissolved with sand particles.Sand is made up of tiny particles, which do not mix with other thimgs.
1927.

What is the meaning of motion??

Answer» An object is said to be in motion if it changes its position with a unit time
Motion meaning is in hindi is Gati
Motion is a when one person move from one place is know as motions
1928.

Which rays depends on the nature of the gas

Answer» Anode rays
1929.

Which one is sublime substance? 1.table salt2.sugar3.iodine4.potassium iodide

Answer» Iodiene
Potassium iodide
1930.

What is magnitude of displacement?

Answer» The numerical value of a physical quantity is called it\'s magnitude
1931.

Why our fingers start shrinking when we wash clothes for a long time

Answer» Due to phenomenon of exo osmosis
1932.

Why particles are very small in size

Answer»
1933.

Calculate the acceleration of a body which starts from rest and travels a distance of 87.5m in 5 sec

Answer» 17.5 m/s square
V=0,U=87.5,A=V-U/T,=87.5-0/5......
Its answer is this if it is starting from rest than its initial velocity is o metre per second and its final velocity is
1934.

What is diffusion in 1 chapter

Answer» The movement of particlea from higher concentration to lower concentration till the concentration become equal.
Diffusion means lower concentration to high concentration
1935.

What is polyploid

Answer»
1936.

Powerhouse of cell

Answer» Mitochondria
Mitochondria
1937.

Why pollution create problem

Answer»
1938.

What is the importance of cell organells virus are neither dead nor leaving. Explain

Answer» Answer
1939.

what is state of matter and write it definitions

Answer»
1940.

What is a manure

Answer» A manure is a organic matter used as fertilizer in agriculture. Manure improve the fertility of the soil by adding organic matter and lots of nutrients
A manure is a organic
1941.

If we apply heat energy to water particles of water start to move faster ? Why?

Answer» It is because of evaporation .By increase in temperature particles of water possess more kinatic energy which helps them to move.
1942.

Wheb was Nucleus discovered and who discovered it?

Answer» It was discovered by Robert Hook in 1665
Nucleus was discovered by Robert Brown in 1831
The nucleus was the first organelle to be discovered. What is most likely the oldest preserved drawing dates back to the early microscopist\xa0Antonie van Leeuwenhoek(1632–1723). He observed a "lumen", the nucleus, in the\xa0red blood cells\xa0of\xa0salmon.\xa0\xa0\xa0\xa0\xa0\xa0\xa0
1943.

Difference between prokaryotic and eukaryotic cell

Answer» Prokaryotic cell:They are smaller in size jernally a (1-5micrometer) .Cell orgalles are absent Eukaryotic cell:They are larger in size jernally (5-100 micrometer ).Cell orgalles are present
prokaryotic cell have absence of nucleus whereas eukaryotic cell have well developed nucleus.
1944.

Why put ink drops in watch glass and indirectly heat it

Answer»
1945.

Why put ink drops in watch glass andIndirectly heat it

Answer»
1946.

What isort

Answer»
1947.

How will cell wall protect bacterial cell frok hypotonic solition

Answer»
1948.

Why water becomes cool in earthpot.

Answer»
1949.

Which faxtors determine cell shape

Answer» Cell wall
1950.

What happens to animal cell when it it placed in a very dilute external medium

Answer» It shrinks by process of osmosis