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ਤੁਹਾਨੂੰ ਖੂਨੀ ਕੁਤੇ ਨੂੰ ਬੰਦ go and TRANSLATE it

EXPLANATION:

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ong>Answer:

four CHARACTERISTIC PROPERTIES of metals.

1. APPERANCE

2. Luster

3. Solubility

4.Floatation

ong>Answer:

Answer: Zinc reacts with HCl ACID as follows.

Zn + 2HCl —————-> ZNCL2 + H2

So 2 moles of HCl reacts with Zinc METAL to produce 1Mole of H2 gas.

So 1 mole of HCl will react with Zinc to produce 0.5 mole of H2 gas.

No of molecules of H2 gas PRESENT in 0.5 mole = 0.5 X N

Where N is the Avagadro Number.

So no.of molecules of H2 gas

0.5x6.022 x10+23

=3.011 X10+23

ong>Answer:

Is a change in phase a physical or chemical change?

You ADDED enough energy to create a phase change from solid to liquid. Physical ACTIONS, such as changing temperature or pressure, can cause physical changes. No chemical changes TOOK place when you melted the ICE. The water molecules are still water molecules.

Explanation:

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ong>Answer:

there are two ALLOTROPIC form of carbon that is diamond and GRAPHITE

EXPLANATION:

In. this graphite is a conductor of electricity because of its hybridization

ong>ANSWER:

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ong>Answer:

my god

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the CUBE ROOT of 0.064

is 0.4

ong>ANSWER:

It is called the Stone AGE because the most common edged tools humans had were made of stone. When humans BEGAN to smelt metal and make edged metal tools, the Stone Age ended and the Bronze Age began.

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ong>Answer:

The PROCESS of adding alum to water to hasten sedimentation is called 'LOADING'. Why has this name been given to the process? When alum is added to water, it DISSOLVES in water and makes the SUSPENDED impurities heavier making them SETTLE down quickly. Therefore, the addition of alum is known as loading.

NATURAL gas--- methane

coke--- carbon

Explanation:

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itna time nhi h HUMARE PASS etne answer de....thoda chota QUESTION PUCHA kro

ong>ANSWER:

read it twice thrice or TILL you get it

EXPLANATION:

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ong>ANSWER:

Acrylic

Explanation:

because it is a lightweight, soft and warm synthetic fiber which is wrinkle- RESISTANT, it is cheaper than wool and; resistant to moths and chemicals.

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DJ dj dj dj dj dj dj dj dj dj dj dj dj dj TH FB dj dj dj

1) P205 + 3H2O:- 2H3Po4

2) 2AL+ 3H2So4 :- Al2(so4)3+3H2

Fe2O3+3Co:-2Fe+3Co2

2Co + O2 :- 2Co2

DJ dj dj f fb fb fb fb th in here dj KA or if KUCHH BHI nahi ho raha

to HIGH momentum and EMPTY space in atom most of a-particles go STRAIGHT through the FOIL

SO ( A ) AND ( C ) ARE CORRECT

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ong>Answer:

Compound are SUBSTANCES which can be formed by chemically combining two or more elements. MIXTURES are substances that are formed by PHYSICALLY mixing two or more substances.

Explanation:

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ong>Answer:

Methyl orange: Methyl orange changes its colour to YELLOW when added to a base or an alkali. (b) Litmus paper: RED litmus paper TURNS blue, whereas blue litmus paper REMAINS blue in a base or an alkali.

ong>Answer:

T,F,T,T,F,T,F,F

Explanation:

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ong>EXPLANATION:

Accepted Answer: Objects at a DISTANCE are SEEN more CLEARLY after rain because the raindrops load the dust particles with water. They become heavier and QUICKLY settle down on the ground.

ong>ANSWER:

Matter in the solid state maintains a fixed volume and shape, with component particles (atoms, molecules or ions) close together and fixed into PLACE. Matter in the liquid state maintains a fixed volume, but has a variable shape that adapts to fit its container.

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ong>Answer:

% carbon in C6H12O6 = 72.06 × 100 % = 40.0 % by mass. 180.18 Similarly, the percentage of hydrogen and OXYGEN can be calculated as FOLLOWS: 1 mole of H atoms WEIGHS 1.01 G and there are 12 moles of H atoms in 1 mole of glucose, so the mass of hydrogen in 1 mole of glucose = 12 × 1.01 g = 12.12 g.

अन्धे की लाठी - एकमात्र सहारा या बेसहारा का सहारा। 1. गरीब मजदूरों की प्रशासन द्बारा सुनवाई न होने पर नेताजी उनके साथ अन्धे की लाठी बन कर खड़े हुए।

Explanation:

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CA(OH)₂+2HCl →CaCl₂+2H₂O

PRODUCT of petroleum

Explanation:

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Your answer is bee HIVES, as the 3rd letter is 'E' and it has 8 letters in it.

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The petiole is a STALK that connects the blade with the leaf base. The blade is the major photosynthetic surface of the plant and appears green and flattened in a plane perpendicular to the STEM.

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ong>Answer:

Soil LETS plants grow, allows gas exchanges to happen between the land and air, provides habitat for most of the organisms on Earth, holds and cleans water, recycles nutrients, and is used for constructing structures like buildings and roadbeds.

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ong>Answer:

1. heterogeneous

2. element

4. fractional /distillation

3. evaporation

5.ammonia

Explanation:

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ong>Answer:

no they can't be CONSECUTIVELY ODD numbers buz the NUMBER ENDS up with an even number

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acid + base ⇒ SALT + water

HCl +NAOH ⇒ NACL + H2O

Explanation:

ong>Answer:

Phenophthalein will remain colorless (as its own color) when it is BROUGHT in the contact of ACIDS.

Phenophthalein will turn into magenta color when it is brought in the contact of bases.

Properties of Acids:

☆ Sour in taste

☆ Acidic in nature

☆ Turn BLUE litmus to red

☆ Are SOLUBLE in water

☆ Examples: Hcl, nitric acid, sulphuric acid, Tartaric acid, ETC.

Properties of bases:

☆ Bitter in taste

☆ Have a soapy touch

☆ Bases which are soluble in water are called alkaline

☆ Basic in nature

☆ Turns red litmus to blue

☆ Examples: Sodium hydroxide, potassium hydroxide, lithium hydroxide, etc.

ong>Answer:

The substances the undergo reaction are CALLED REACTANTS while the product formed after reaction of TWO or more element is called product.

ong>ANSWER:

I can't understand your question

SORRY

ong>Answer:

BHAI logo SAMI ana PAR ENGLISH jhada THAI hoo abhai kya hoooo

1st )C

2nd)b

3rd)d

4th)b

5th)c

ong>Answer:

Yellow or red soil indicates the presence of oxidized ferric iron OXIDES. Dark brown or black color in soil indicates that the soil has a high organic matter content. Wet soil will appear darker than dry soil. ... Sodium content influences the depth of colour of organic matter and therefore the soil.

Features of Red and Yellow soil :-

2) These soils are a type of soil which develops in a warm, temperate, moist climate under DECIDUOUS or MIXED forests and they have thin type organic and inorganic-mineral LAYERS overlying a yellowish-brown leached layer resting on an red layer.

ong>Answer:

Forest fire can broadly be classified into three categories; Natural or controlled forest fire. Forest fires caused by heat generated in the litter and other biomes in summer through carelessness of PEOPLE (human neglect) and. Forest fires purposely caused by local inhabitants.

Explanation:

Wildfire, also called forest, bush or vegetation fire, can be described as any uncontrolled and non-prescribed COMBUSTION or BURNING of PLANTS in a natural setting such as a forest, grassland, brush LAND or tundra, which consumes the natural fuels and spreads based on environmental conditions (e.g., wind, topography).

ong>ANSWER:

HYDROGEN is an element

3rd OPTION is correct

a). Copper(II) sulfate

b). Crystallization is the process by which we can obtain crystals of copper sulphate.

14).

a). Wool is an insulating material that protects the animal from cold environment. Shearing is usually done in summer because sheep do not require insulating material in summer and it helps the animal to sustain easily in summer as well.

b). The most common health and safety hazards identified in the wool shed that can affect you are: sprains and strains, wrist and back problems, cuts and bruising, fatigue and dehydration. Some more serious health hazards are: wool based infections, giardia, leptospirosis, hepatitis, tetanus, dermatitis and noise.

c). Rearing of sheep means to look after the sheep by providing them food, shelter and health care. breeding is done to obtain animals with desired characters . the two individuals of desirable character can be selected as parents.

15).

a). Paheli is suffering from indigestion due to acidity. ... Orange juice is acidic in nature and indigestion is caused by excess acid in the stomach. So having orange will make the problem worse then relieving it. Instead, she should be given basic substances like Milk of Magnesia for treatment.

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Explanation:

The NUMBER of electrons in the outermost SHELL of a particular atom determines its reactivity, or TENDENCY to form chemical bonds with other atoms. This outermost shell is KNOWN as the valence shell, and the electrons found in it are called valence electrons.

During silk production, cocoons are thrown in boiling water. As a result, the silk worms die. So, animal activists are against it.

12. a). Curd, lemon juice and tamarind all contain acid. So they are ACIDIC and          acids are sour in taste.

    b). i). ammonium hydroxide (NH4OH)

         ii). SODIUM hydroxide (NaOH) or POTASSIUM hydroxide (KOH)

    c). iv). A if false but R is TRUE

ong>Explanation:

Life on Earth would not be possible WITHOUT our air. Our air (the atmosphere) provides US with oxygen to breathe and carbon DIOXIDE for plants to LIVE. But the atmosphere does a lot more than provide air for living organisms. The atmosphere also HELPS to regulate Earth's temperature...