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Answer:

Take an iron stand with a clamp and a cotton thread of about 65 cm length.

Tie the thread to the clamp so that it hangs FREELY as SHOWN in figure.

At the free end suspend a pan so that weight can be placed in it.

Add weight one by one till the thread breaks.

Note down the total weight required to break the thread. This weight indicates the STRENGTH of the fibre.

Repeat the same activity with threads of wool, SILK and nylon.

You will OBSERVE that the weight required to break the threads of wool, silk and^nylon is more than cotton. So, synthetic fibres are stronger than cotton.

Answer:

A MINERAL acid (or inorganic acid) is an acid DERIVED from one or more inorganic compounds. All mineral acids form hydrogen ions and the conjugate BASE when DISSOLVED in water.

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EXPLANATION:

POLYTETRAFLUOROETHYLENE

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Answer:

the UNIT of current is ampere

Explanation:

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PLANTS BREATHE through STOMATA

1.a)the time when you eat or the food that is eaten at that time.

b)one of the items of food you need to make something to eat.

2.PLANTS are the sources of food INGREDIENTS like grains, cereals, vegetables and fruits. Animals provide us with milk, meat products and eggs. Cows, goats and buffaloes are some common animals which give us milk. Milk and milk products like butter, cream, cheese and curd are used all over the world.

3.A food is something that provides nutrients. ... energy for activity, growth, and all functions of the body such as breathing, digesting food, and keeping warm; materials for the growth and repair of the body, and for keeping the immune SYSTEM healthy.

4.

(a) Milk=Animal

b) eggs =Animals

c) Meat=Animal

d) Honey=Bees

5.Honey is collected from wild bee colonies, or from hives of domesticated bees.

6.Sprouts are the premature growth of a plant from a germinated seed.

7.A)Banana=Fruit

B) Mustard=Mustard seed is used as a spice.

8.No, all living beings do not need the same kind of food. Some animals eat plants as food, and they are CALLED herbivores. Some animals feed on other animals, and they are called Carnivores. Some others eat food from plant sources as well as animals, and such living beings are called omnivores.

9.Three different types of animals exist: herbivores, omnivores, and carnivores. Herbivores are animals that eat only plants. Carnivores are animals that eat only meat. Omnivores are animals that eat both plants and meat.

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Answer:

Celsius scale: The Celsius scale, also known as the centigrade scale, is a temperature scale based on 0 degree for the freezing point of WATER 100 degree for the boiling point of water

conduction: the process by which heat or ELECTRICITY passes through a material is called conduction

conductor: a conductor is an object or type of material that allows the flow of charge one or more direction is called conductor

Explanation:

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Answer:

MAGNESIUM oxide is basic in nature and THUS its aqueous SOLUTION TURNS red litmus blue.

EXPLANATION:

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ANSWER:

hey

use OPTION paint

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ANSWER:

because they recats with METAL

Answer:

AMONG the OLDEST methods of preservation are drying, refrigeration, and fermentation. Modern methods include CANNING, PASTEURIZATION, freezing, irradiation, and the addition of chemicals. Advances in packaging materials have played an important role in modern food preservation.

Explanation:

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☞Most metals are silvery looking, high density, relatively soft and easily deformed solids with GOOD electrical and thermal CONDUCTIVITY, closely packed STRUCTURES, low ionisation energies and ELECTRONEGATIVITIES, and are FOUND naturally in combined states.

Classification systems are used by scientists to help us understand the NATURAL world. When OBJECTS are classified, they are SIMPLY put into a GROUP with other similar objects. The classification systems used in biology are BASED on the similarities and differences in organisms.

ANSWER

The pen will FLOAT in WATER

the pen is LESS dense than water

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ANSWER:

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ANSWER:

SWITCH as it HELPS the FLOW of CURRENT

ANSWER:

MISCIBLE LIQUIDS....

EXPLANATION:

SODIUM chloride

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ANSWER:

.... can't UNDERSTAND your QUESTION PROPERLY

Explanation:

an athletic activity requiring skill or PHYSICAL prowess and often of a competitive NATURE, as racing, baseball, tennis, GOLF, BOWLING, wrestling, boxing, hunting, FISHING, etc.

Answer:

A mineral is a pure substance is a specific composition and STRUCTURE while a rock is typically a mixture of several DIFFERENT minerals although a few types of Rock MAY include only one type of minerals example of minerals are feldspar QUARTZ mica halite calcite and amphibole

Answer:

What are the names of the APPARATUS used to find flash point and FIRE point?

Flash Point Apparatus is being used for measurement of Flash Point and fire point. There are three types of flash point apparatus:

Abel Flash Apparatus: For flash point below 50 °C Abel flash point Apparatus is used.

Pensky Martens Apparatus: For flash point between 50 °C to 120 °C “Pensky Martens Apparatus” is used.

CLEVELAND OPEN Cup: For flash point above 120 °C Cleveland Open Cup is used, it is open cup type flash point apparatus.

ANSWER:

All parts of a plant can be consumed i.e., stem, FRUIT, ROOT. For example, Potatoe is MODIFIED stem called a tuber. It stores a large amount of edible starch which is used as food, brinjal or eggplant fruit is used as vegetable and carrot which is root is used as root. Thus, the correct answer is option D.

Explanation:

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ANSWER:

Answer: 1 MILLIMETER < 1 CENTIMETER < 1 METER < 1 kilometer

ANSWER:

of course

Ans c). erg

Explanation:

An erg is the force DONE of one DYN

ANSWER:

TRUE it's the PROPER. answer

ANSWER:

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Answer:

We find animals of certain KIND living in particular CLIMATIC conditions because every living organism is adapted to live in the particular habitat.

For EXAMPLE, penguins have thick skin to protect themselves from cold and webbed feet to swim in water. It will not be ABLE to survive in the HOT climate of tropical regions as they developed thick skin for the protection from cold not from the hot and humid temperature.

Answer:

The rivers of the Northern Plains carry a LOT of water and FINE silt. On reaching the plains the rivers slow down and deposit silt ALONG its BANKS. This makes the AREA extremely fertile.

EXPLANATION:

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Answer:

An indicator prepared from natural substances is known as natural indicator. Examples are Litmus, Turmeric, China ROSE petals, SNOWBALL plant, Red Cabbage and Grape Juice… . An indicator prepared from artificial substances is known as SYNTHETIC indicator Examples are PHENOLPHTHALEIN and Methyl Orange.

Explanation:

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ANSWER:

yes , husk is seperated from seeds

they are seperated by MANY ways

eg: by air n WATER

Answer:

In biology, a phylum (/ˈfaɪləm/; plural: phyla) is a level of classification or taxonomic rank below KINGDOM and above CLASS. Traditionally, in botany the TERM division has been used INSTEAD of phylum, ALTHOUGH the International Code of Nomenclature for algae, fungi, and plants accepts the terms as equivalent.

ANSWER:

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A REVERSIBLE CHANGE is a change that can be undone or reversed.

If you can get back the substances you started the reaction with, that's a reversible reaction.

A reversible change might change how a material looks or feels, but it doesn't create new materials.

Examples of reversible REACTIONS include DISSOLVING, evaporation, melting and freezing.

Andesite is an extrusive volcanic ROCK of intermediate composition. In a general SENSE, it is the intermediate type between basalt and rhyolite. It is fine-grained (APHANITIC) to porphyritic in texture, and is composed predominantly of sodium-rich PLAGIOCLASE plus pyroxene or hornblende.

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ANSWER:

Yo Yo Yo

Explanation:

Only BUILDINGS on TOP of hills get struck by LIGHTNING. Only tall buildings need lightning rods.

Answer:

OPTION B MESOPHYTES

Explanation:

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Answer:

It USUALLY occurs when something like dust or pollen irritates the mucus membranes of the nose and THROAT. As a reflex, your body sneezes in ORDER to get RID of whatever is causing the IRRITATION.

ANSWER:

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ANSWER:

Let the RADIUS of the base of the cylinder be 2x and its height be 3X.

Volume of a cylinder =

(2x)2 (3x) = 1617

X = = 3.5 CM

r = 7 cm, h = 10.5 cm

Curved surface area of the cylinder = 2rh

Answer:

Soil organisms need water and air as well to HELP KEEP the soil particles from bonding. ... Loosening of soil ALLOWS the roots to BREATHE easily, because it allows them to PENETRATE into the spaces in between the soil particles which have air trapped in them.

ANSWER:

INSECTIVOROUS plant

Explanation:

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Answer:

THE INNERMOST PART OF A FLOWER IS CALLED THE ______ (PISTIL/PETIOLE)

EXPLANATION:

Pistil ( I thik so, not sure about the answer I GIVE)

Answer:

4. false

5. TRUE...

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Answer:

Crystallization or CRYSTALLISATION is the process by which a solid forms, where the atoms or molecules are highly organized into a STRUCTURE known as a crystal. Some of the ways by which crystals form are precipitating from a solution, freezing, or more RARELY deposition DIRECTLY from a GAS.

Answer:

Rusting is an example of a CHEMICAL change. A chemical property describes the ability of a substance to undergo a SPECIFIC chemical change. A chemical property of IRON is that it is CAPABLE of combining with oxygen to form iron OXIDE, the chemical name of rust.