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C is not a property of ACID because bases CHANGES RED litmus to BLUE not acid. Acid changes blue litmus to red

Molecular crystalline is made up no. of molecules which are joined by POLAR, nonpolar, or HYDROGEN bonds. while COVALENT crystalline is made up of atoms which are bonded or joined by covalent bonds. molecular crystalline is not so rigid while covalent crystalline is highly rigid in nature. MELTING point of molecular crystalline is LOW while melting point of covalent crystalline is very high.

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The sulphide ores of less ELECTROPOSITIVE metals like Mercury, Plumbum, Copper etc., are heated in air as to convert part of the ore into oxide or sulphate which then REACTS with the REMAINING sulphide ore to give the metal and SULPHUR dioxide.


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When CALCIUM CARBONATE I. E. lime dissolve in water, it PRODUCES calcium hydroxide and hydrogen gas. REACTION is as follows
caco3+h2o- ca(oh)2+h2
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The PROCESS of burning CARBON and yielding CO2 is CALLED combustion which is an EXOTHERMIC process,

ANSWER:

EXPLANATION:

NAOH BASE

kOH base

CaOH Base

Any compounds containing the CH3C=O group or the CH3CH(OH) group give a POSITIVE result with the IODOFORM test. When I2 and NaOH is added to a compound containing one of  positive test.
if any compound does not CONTAIN given group it doesn't gives required test....

As you note that h3 is COMMON in all the options so we will try by halides means flurine chlorine and bromine EN of flurine is high and then cl br. so ans is 2>1>3

"As SAID before, one example is Photosynthesis. A Chemical REACTION takes place when plants take carbon dioxide from the atmosphere and make it into oxygen. The burning of FOSSIL fuels, such as coal, is another example. .... Air POLLUTION is commonly ATTRIBUTED with Chemical Reactions."

Work FUNCTION , Ф = 2.2 eV = 2.2 × 1.6 × 10⁻¹⁹ J = 3.52 × 10⁻¹⁹ J
Velocity of ejected electron , v = 6 × 10⁶ m/s
mass of electron = 9.1 × 10⁻³¹ Kg
Let wavelength of incident photon is λ

Now, use photoelectric effect FORMULA ,
kinetic ENERGY = energy of incident photon - energy of ejected electron
1/2mv² = hc/λ - 3.52 × 10⁻¹⁹
1/2 × 9.1 × 10⁻³¹ × (6 × 10⁶)² = 6.6 × 10⁻³⁴ × 3 × 10⁸/λ - 3.52 × 10⁻¹⁹
9.1 × 18 × 10⁻¹⁹ + 3.52 × 10⁻¹⁹ = 19.8 × 10⁻²⁶/λ
(163.8 + 3.52) × 10⁻¹⁹ = 19.8 × 10⁻²⁶/λ
167.32 × 10⁻¹⁹ = 19.8 × 10⁻²⁶/λ
λ = 198 × 10⁻²⁷/167.32 × 10⁻¹⁹
=1.183 × 10⁻⁸ m

It is not harmful when u add LITTLE to the SOIL but it is harmful when u use excessive amount of it as it LOOSES the FERTILITY of soil

HEYA ,..

HERE ARE SOME Q.

FESO4----------> FE2O3+ SO2+ SO3

CO + H20------------> CH3OH

ZnO+ C --------> Zn+CO

H2 + N2-------------> NH3

H2S + O2--------------> H2O+ SO2..

ANS--

.

2FESO4----------> FE2O3+ SO2+ SO3

CO + 2H20------------> CH3OH

ZnO+ C --------> Zn+CO

H2 + N2-------------> 2NH3

2H2S + 3O2--------------> 2H2O+ 2SO2..

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Answer :

• Mass percentage of aspirin = 1.424%.

Step-by-step EXPLANATION :

GIVEN that,

• Mass of solute, aspirin = 6.5 g.
• Mass of solvent, ACETONITRILE = 450 g.

Mass of SOLUTION = Mass of solute + Mass of solvent

⇒ 6.5 g + 450 g

⇒ 456.5 g.

Now, we know,

PUTTING the values, we get,

Mass % of solute aspirin =

It will GIVE RISE to HYDRONIUM IONS

No of MOLECULES=(448/22400)×6.02×10^23=0.1204×10^23

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CO does not. The main contributors of acid rains are CO2, SO2 and NO2. Normal RAINWATER has a certain ACIDITY (pH 5.6) due to dissolved CO2 and that's normal. ... Now the pH will be < 5.6 due to the H+ so FORMED and this water is ACIDIC so it's called acid rain when it rains. Hope this helps 
-Anna

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Molecular weight of H2SO4 = 98 G/mol

20 g of H2SO4 = 20 /98 ≈ 0.20 moles

1 mole = 6.023 × 10^23 molecules

0.20 moles =12.046 × 10^22 molecules

One molecule of H2SO4 has 4 oxygen atoms,

therefore ;

Number of oxygen ATOM in 0.2 mole = 4 × 12.046 × 10^22

= 48.184 × 10^22 oxygen atoms








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Here your answer plz.
when ELECTRICITY PASSED through the molecules of HYDROGEN and oxygen. we get water. this is basis of fuel cell .at the cathode ,the electron of hydrogen ion and on anode the electron of oxygen is present.
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During PROPHASE I, pachtene stage (CROSSING over TOOK PLACE)

FyixouchlclxdouxkgIyzkhxkhxjts

If it means average speed,it is EQUAL to √8RT/πM..
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Hey dear,

Here is your correct answer:
when Acetaldol I'd treated with EXCESS of ACID
then UNSATURATED product will be ALDEHYDE.
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Let AMOUNT of Caustic SODA (NaOH) is taken 100g
In 100g of Caustic soda contains 74.6 g of Na₂O .
Let see reaction of Caustic soda :
2NaOH ⇔Na₂O + H₂O
Here it is clear that 2 moles of NaOH form 1 mole of Na₂O
∴ 2(23 + 16 + 1) = 80g of NaOH form (2×23+16) = 62g of Na₂O
∴ 1g of Na₂O = 80/62 g of NaOH
∴ 74.6g of Na₂O = 80/62 × 74.6 = 96.26g

Now , PURITY of Caustic soda = theoretical amount of NaOH/taken amount of NaOH × 100
= 96.26/100 × 100
= 96.26 %

Here is the answer
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By ge ZONE refining is USED for the purification of [PUNE CET 1998]

Here your answer PLZ.
3h2+n2 = 2(NH3)
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