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5901.

Write two precautions will measuring volumn of objects in the lab

Answer» Ensure the precautions
5902.

What are antibiotics

Answer» Antibiotics are drug type substance which help to fight bacterial infections.
5903.

How to find mass number

Answer» Mass no. = no. Of protons + no. Of neutrons
5904.

Melting point of a substance is below the melting point. Predict the physical state of matter

Answer» Its physical state of matter is liquid i.e. 25degree... If its boiling point is below the room temperature its state is gas
5905.

A stone is dropped from height find time when stones meet

Answer»
5906.

What is average pawor

Answer» Average power is the average amount of work done or energy transfered per unit time
Total work done ÷Total time taken
5907.

Where is the minimum and maximum gravity pressure in the earth?

Answer» At equator minimum and at poles maximum
Maximum is on the surface of earth and minimum is at the center of the Earth.
Maximum at the polesMinimum at the equator
5908.

How to download 9th class science sample paper 12 free solutions

Answer»
5909.

Why hot water freezes more quickly as compares to the cold water

Answer» As hot water has more heat energy it will evaporate faster and hence cools faster than cold water ( mean to say that its temperature will go down faster than cold water) so it will freeze faster.
5910.

What do you mean by mole

Answer»
5911.

Wat is genrticlly modified organism

Answer» Genetically modified organisms ( GMO’s ) are the organisms which result when a gene is taken from one organism to another organism in the laboratory for improving its functioning ability or for obtaining desirable results. Genetically modified organisms are also called as transgenic.
5912.

Why AIDS is considered as a syndrome and not a virus?

Answer» Because syndrome means a group of diseases and when AIDS is caused the person suffer from many diseases .That\'s why it is called syndrome nit disease.Hope u will understand
Because they have no proper symptom
5913.

If we sneeze is there any work done

Answer»
5914.

Types of crops

Answer» Food crops cash crop plantation crop Horticulture crops
Two mainly rabi and kharif crop according to sowing period
5915.

Why are air move in atmosphere

Answer» Because air being a mixture of gases, the particles of gas move randomly and have very large space between them
Because Air(gases) particles are far apart from each other that\'s why they don\'t have force of attraction and move freely in atmosphere
5916.

Why is atmosphere essential for life ?

Answer» Atmosphere is essential for life because it acts as a protective blanket for all the organism to exist. It keeps the average temperature of the earth normal. In addition, the ozone layer absorbs the uv rays coming directly from the sun and protects all the life forms on earth.
Atmosphere is essential for life for several reasons. Some of these reasons are(i) Oxygen, which is required for the survival of every living organism is present in the atmosphere.(ii) Atmosphere works as an iiisulator, it keeps the average temperature of the earth fairly constant during the day and night by preventing escape of heat into outer space.(iii) Atmosphere also acts as protective blanket for the Earth. It absorbs most of the harmful radiations such as ultraviolet (UV) radiations coming from the Sun. It results in the Earth receiving just the right amount of heat and sun’s rays, which helps in the climate control and allows the living organisms to exist.
5917.

What are the principlesof treatment of disease?

Answer» \tPrinciples of Treatment:There are two ways to treat an infectious disease. One is to reduce the effects of the disease and the other way is to kill the cause of the disease. For the first requirement, we can provide treatments that will reduce the symptoms. The symptoms are usually a result of inflammation. For example, we can take medicines that bring down fever, reduce pain or loose motions. We can take bed rest so that we can converse our energy.
5918.

A solution contains 50gm of common salt in 50g of water.calculate the consteration of the solution

Answer» Hope it is correct
Concentration of the solution =Amount of solute/Amount of solvent =50/50=1Therefore, concentration = 1
5919.

Fluid mosaic model and diagram

Answer» According to fluid mosaic model, plasma membrane is made up of a bilayer of phospholipids. There are two types of protein molecules: Intrinsic Proteins, which completely covers the lipid bilayer and Extrinsic Proteins, which occur either on the outer surface or on the inner surface of the lipid membrane. The fluid mosaic membrane has been described as “a number of protein icebergs floating in the sea of lipids”.
5920.

Cardiac muscles never get tired.why?

Answer» Cardiac Muscles - These are found exclusively in heart. They are cylindrical, non-tapering, branched with faint striations. They have one or two nuclei in each cell. They are involuntary. Their function is rhythmic contraction and relaxation throughout life.
5921.

What is the effect of change of tempreature on the solubility of salt

Answer» By changing the temperature we can increase the soluble property of a solute. Generally, water dissolves solutes at 20∘C or 100∘C.. Sparingly soluble solid or liquid substances can be dissolved completely by increasing the temperature. But in the case of gaseous substance, temperature inversely influences solubility i.e. as the temperature increases gases expand and escapes from their solvent.
If we increase the temperature it will become concentrated
5922.

Which gas is required for photosynthesis

Answer» Co2
Carbon dioxide
5923.

What is meristmetic tissue?

Answer» Meristematic tissue is present for plants which is also known as growth tissue. It is responsible for the growth of plants.
5924.

Why meristematic tissues does not have vacuoles

Answer» Vacuoles provide turgidity and rigidity .Meristematic tissue are capable for cell division so there is no need of vacuoles
5925.

Valency of an element is 3 what is its oxide

Answer» ?sorry it will be XO3
It will be XN3
5926.

What is Gravitation .

Answer» Gravitation is the force of attraction between any two bodies in this universe . Gravitation or gravity is everywhere, it is the force that keeps us stuck to the ground, drives the planets around the sun and the same force that pulls you down a slide.
5927.

Write bohr model for (1.) Cl- & (2.) Al+³

Answer»
5928.

Write bohr model for _ +31) CL. 2) Al

Answer»
5929.

An underwa

Answer»
5930.

What is small g and big G.

Answer» G is gravitational constant and g is acceleration due to gravity
5931.

Atom are made up of ....

Answer» Protons ,neutrons and eletrons
Atoms are made up of subatomic particles electron,proton and neutron
5932.

A volume of solid of mass 2 kg is 500 cm cube. Find the density of the solid.

Answer» 0.4 Kg/m^3
5933.

How does endocrine system works

Answer» It controls all the glands and pituitary gland is the master gland it produces growth harmone
5934.

write a short note on protective tissue in plant

Answer»
5935.

difference between epithelial tissue and connective tissue

Answer» Epithelial tissues - Form the covering of the external surfaces, internal cavities, and organs of the animal body.Connective tissues - Specialized to connect various body organs. For example, Blood
5936.

The mass of atom is comtain in which

Answer» The mass of an atom is contain in nucleus.
Nuclus
Nucleus
Nucleus of a atom contains the mass of atom. All the weight of a atom is because of nucleus only.
5937.

Why it is not possible to see an atom even with the most powerful microscope

Answer» krishti you have again show your foolishness over here atoms are not the smallest particles it is proton electron and neutron which is the smallest particle but now scientists are searching for more smallest particles they say that even electron proton and neutron are made of even smaller particles
As we know that the smallest particles of the world is ATOM its size was 0.00001 nm so\' we can\'t see it by microscope.
Atoms are not the smallest particles....three are more particles smaller than them..they r not visible even with the most powerful microscope because they have a very small size that is approximately 0. 0 0 0 0 0 0 0 1 m
It is because atoms are the most smallest particles
It is not possible to see an atom even under a powerful miccroscope becaise it\'s size is 10^-9 m which much beyond the range of a pwerful microscope
Because atom is the smmalest partical
5938.

Name the atomic number

Answer» again krishti what is 3585etc over here sangeev have not even told the element whose atomic number he wants to know are you rubbish dumb we think so
Can u tell the element first
Tell the name of element whose atomic no. U want to know.....
35,85etc
5939.

Draw plant and animal cell

Answer»
5940.

One atmosphere is equal to how much Pascal

Answer» 1 atmosphere equal to 1.01×10 is to ki power 5 pascal
1atmosphere is equal to 1pascal
5941.

Is work can be nagative ?

Answer» Yes it can, when displacement of the object and force applied on it are in opposite directions
5942.

Is leukocytes is irregular in shape

Answer»
5943.

What evolution of organisms ?who first of all gave the idea of evolution?

Answer» The evolution of organism is the report of changes in the body design and the characteristics of animals, plants , or humans.....The idea of evolution was first given by Charles Darwin in 1859...........
The first idea of evolution given by Charles Darwin in 1859
5944.

Name the newly discovered form of carbon which is represented as C60

Answer» Buckminsterfullerene
Fullerene or Buckyball
5945.

Protoplasm ka sang a than kiya hai

Answer»
5946.

Mention two factors need to be varied to liquefy atmospheric gases

Answer» The 2 factor are 1= increase in pressure 2= decrease in temprature
5947.

What are sound wave

Answer» Sound wave is the propety of its frequency of the produced sound
Sound waves are characterized by the motion of particles in the medium and are called mechanical waves
Stomp
5948.

Explain the causes of winds

Answer» When the high pressure high pressure areas winds come from low pressure area it will make the tornado tsunami and so many cycles and it is very harmful for us
5949.

Which surface sound are reflact

Answer» Hard surfaces sound are reflect
5950.

How to score good marks in science

Answer» And by naling good and colourful notes by yourself
You can score marks in science by Learning it visually