Explore topic-wise InterviewSolutions in Current Affairs.

EXPLANATION:

the TWO are more MISCIBLE LIQUIDS are WATER

Answer:

1:1

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Answer:

A is SODIUM because molar mass of NaOH is 40; which can be SHOWN as follows:

Na(23)+O(16)+H(I)=40

So. B is NaOH

When sodium HYDROXIDE is TREATED with ALUMINIUM oxide, we get sodium aluminate. So, C is sodium aluminate. Following reaction happens in this case:

Al²0³+2NaA1O²+H²O

ANSWER:

MAYBE 2 HECTARES is the CORRECT answer.......

Answer:

H2O2 for OXIDATION STATE -1 and MgO for -2

Explanation:

Answer:

A combination reaction is a general CATEGORY of chemical reactions. It MAY be defined as a chemical reaction in which two or more substances COMBINE to form a single substance under SUITABLE conditions. Combination reactions are also known as synthesis, because in these reactions new substances are synthesized.

Explanation:

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Answer:

BRO fasle BCOZ they are amphoteric OXIDES not ATMOSPHERIC

ANSWER:

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ANSWER:

Although graphite and diamond are both forms of elemental carbon, graphite is slightly more stable at 1 ATM pressure and 25°C than diamond is. GIVEN enough time, diamond will revert to graphite under these CONDITIONS. Hence graphite is the standard state of carbon.

Explanation:

Although graphite and diamond are both forms of elemental carbon, graphite is slightly more stable at 1 atm pressure and 25°C than diamond is. Given enough time, diamond will revert to graphite under these conditions. Hence graphite is the standard state of carbon.

ANSWER:

not SURE but d OPTION is CORRECT

ANSWER:

Here you are with the answer.

Explanation:

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Answer:

Adding water to an acid or BASE will change its pH. Water is MOSTLY water molecules so adding water to an acid or base reduces the CONCENTRATION of ions in the solution. When an ACIDIC solution is diluted with water the concentration of H + ions decreases and the pH of the solution increases TOWARDS 7.

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Answer:

1)T I HOPE.

EXPLANATION:

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At ROOM temperature, sodium HYDROXIDE is a white crystalline odorless solid that absorbs moisture from the air. ... It is generally used as a solid or a 50% solution. Other common names include caustic soda and lye. Sodium hydroxide is used to manufacture soaps, RAYON, paper, explosives, dyestuffs, and petroleum products.

Answer:

atomic number

Explanation:

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ANSWER:

c + O2= co2

Explanation:

carbon DIOXIDE is evolved

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On passing the mixture of ETHANE, ethene and ethyne through a Tollen's reagent (ammoniacal silver NITRATE solution). Ethyne will FORM a white precipitate of silver acetylide while the rest of the GASES pass through without any reaction.

ANSWER:

Explanation:

Roasting is the PROCESS in which the ore is heated below its melting point in presence of AIR to oxidise the impurities. Calcination is the process of HEATING the ore below its melting point an ABSENCE of air to remove volatile impurities like arsenic etc. ...

Answer:

CHEMISTRY is the STUDY of matter and the chemical REACTION between substances. Chemistry is also the study of matter's composition, structure and Properties.

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Answer:

A. zinc SULPHATE is formed

B. Calcium hydroxide is formed

C.Mercury metal

D. COPPER

E. NaCl and BASO4

Explanation:

In a town full of suffering poor people, a swallow who was left behind after his flock flew off to Egypt for the winter[1] meets the statue of the late "Happy Prince",[2] who in reality has never experienced true sorrow, for he lived in a palace where sorrow was not allowed to enter.[2] Viewing various SCENES of people suffering in poverty from his tall monument,[3] the Happy Prince ASKS the swallow to take the ruby from his hilt, the SAPPHIRES from his eyes, and the gold leaf covering his body to give to the poor. As the winter comes and the Happy Prince is stripped of all of his beauty, his lead heart breaks when the swallow dies as a result of his selfless deeds and severe cold. The people, unaware of their good deeds, take the statue down from the pillar due to its shabbiness (intending to replace it with one of the Mayor, and the metal MELTED in a furnace, leaving behind the broken heart and the dead swallow; they are thrown in a dust heap. These are taken up to heaven by an Angel that has deemed them the two most precious things in the CITY. This is affirmed by God, and they live forever in His "city of gold" and garden of Paradise

ANSWER:

from GASEOUS STATE

EXPLANATION:

gaylusacs LAW

Explanation:

Magnesium ribbon should be cleaned with sandpaper before burning in the AIR. ... To REMOVE the Magnesium oxide LAYER from the ribbon which may prevent or SLOW down the burning of magnesium ribbon. Unwanted impurities DEPOSITED on the magnesium ribbon can be removed and only pure magnesium can be used for the reaction.

ANSWER:

EQUILIBRIUM : ∆G=0

SPONTANEOUS REACTION : ∆G= -ve

Non Spontaneous reaction : ∆G= +ve

⠀⠀⠀⠀⠀▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅

Power of the bulb = 100 watt = 100J/s

⠀⠀

Energy of one photon is E = hν = hc/λ

⠀⠀

where, 

h = 6.626 × Js, C = 3 × 10⁸ m/s

⠀⠀

Given,

 λ = 400NM = 400 × m

⠀⠀

By putting the VALUES, we get

⠀⠀

⠀⠀

E = 4.969×J

⠀⠀

Number of photons emitted in 1 sec × energy of one photon = power

⠀⠀

⠀⠀

⠀⠀

So, option C is correct

⠀⠀⠀⠀⠀▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅

Explanation:

1 MOLE of any substance CONTAINS 6.02×10

23

atoms. Thus, 4.6×10

22

atoms corresponds to 0.0764 moles.

0.0764 moles weighs 13.8 G. Thus, 1 mole will WEIGH 180 g.

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Answer:

1. LIME softening

2. zinc

3. CALCIUM sulphate

4. SPRING

Number of moles = mass / molar mass

(a) 0.6 mol of hydrogen PEROXIDE :-

Hydrogen peroxide => H2O2

Number of moles = 0.6

Mass = ?

Molar mass of Hydrogen = 1 g/mol

Molar mass of Oxygen = 16 g/mol

Molar mass of H2O2 = 1*2 + 16*2 = 2 + 32 = 34 g/mol

0.6 = mass / 34

mass of H2O2 = 34*0.6 = 20.4 g

(b) 0.15 mol 0f AMMONIA gas​ :

Ammonia => NH3

Number of moles = 0.15

Mass = ?

Molar mass of Hydrogen = 1 g/mol

Molar mass of NITROGEN = 28 g/mol

Molar mass of NH3 = 28 + 1*3 = 31 g/mol

0.15 = mass / 31

mass of NH3 = 31*0.15 = 4.65 g

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EXPLANATION:

Oppotion 4 is the CORRECT ANSWER of your question

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A SET of REQUESTS that are processed together is called PROGRAM.

ANSWER:The process by which leaves produce food is photosynthesis/

b) The reactants are WATER(H2O)  and Carbon dioxide(In presence of SUNLIGHT and chlorophyll )

c)Products are Glucose and water.

d ) Photosynthesis is an endothermic reaction.It is a photochemical process.

Explanation:

Answer:

SUBLIMATION is the transition of a SUBSTANCE directly from the solid to the gas state, without PASSING through the LIQUID state. ... The reverse PROCESS of sublimation is deposition or desublimation, in which a substance passes directly from a gas to a solid phase.

Explanation:

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DON'T KNOW.....

SORRY

ANSWER:

LESS MARK BRAINLIST PLEASE

ANSWER:

MATTER can NEITHER be CREATED nor DESTROYED...

ANSWER:

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Explanation:

Explanation: ENERGY of bonding ORBITALS is LESS than antibonding orbital so σ2px has lowest energy than other GIVEN.

Answer:

Four of the Balmer lines are in the technically "visible" part of the spectrum, with wavelengths longer than 400 NM and shorter than 700 nm. Parts of the Balmer series can be seen in the solar spectrum. H-alpha is an important line used in ASTRONOMY to detect the presence of hydrogen.

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Answer:

In ATOMIC physics, the Bohr model or RUTHERFORD–Bohr model, presented by Niels Bohr and ERNEST Rutherford in 1913, is a system consisting of a small, DENSE nucleus surrounded by orbiting electrons—similar to the STRUCTURE of the Solar System, but with attraction provided by electrostatic forces in place of gravity.

ANSWER:

C. 2 will be the answer.......

Answer: correct answer you have not given

the correct answer is 0.56 L

Explanation:

CaCO

3

+2HCl→CaCl

2

+H

2

O+CO

2

100 G 44 g

1 mole 1 mole

22.4 L 22.4 L

We know that 1 mole of any gas at 0

o

C and 1 ATM pressure occupies 22.4 L volume.

So, 100 g CaCO

3

forms 22.4 L of CO

2

Hence, 2.5 g CaCO

3

will form =

100

2.5×22.4

=

100

56

L of CO

2

=0.56 L of CO

2

Explanation:

atoms combine so that their energy decreases and STABILITY increases. CONSIDER hydrogen atoms A and B are approaching each other. When the TWO atoms are at large distance from each other, there is no interaction between them. As these two atoms each. other new attractive and repulsive forces being to operate. These are:

∙ Attractive force between nucleus of H

A

and electrons of H

A

∙ Attractive force between nucleus of H

B

and electrons of H

A

∙ Repulsive force between nuclei of both the atoms

∙ Repulsive force between electrons of both the atoms.

Experimentally. it has been found that the magnitude of new attractive force is more than new repulsive force. As a result, two atoms approach each other and potential energy decrease. Ultimately a stage is reached where the net force of attraction balanced the force of repulsion and system acquires minimum energy. At this stage, two hydrogen atoms are said to be bonded together to from a stable molecule having the bond length of 74 pm. At this stage, the minimum distance between the two nuclie which is necessary for minimum energy and maximum stability is called bond length and the energy released in gaseous state by combination of two ISOLATED atoms to form a molecule is called bounded energy.....

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ANSWER:

I don't KNOW the QUESTION

ANSWER:

THEREFORE, we can say that there are a total of 12 sigma bonds in benzene. Now, LOOKING at the STRUCTURE of benzene, we can see that there are 3 C=C bonds. Therefore, there are 12 sigma bonds and 3 pi bonds. Benzene is therefore made up of 15 covalent bonds.

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Answer:

Find the number of moles of molecules PRESENT in 50 ml of an ideal GAS exerting a

pressure of 770 mm at 25°C (R=0.0821 L atm mole K)

EXPLANATION:

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ANSWER:

BEACUSE they are WATER SOLUBLE

ANSWER:

don't KNOW SORRY

EXPLANATION:

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ANSWER:

Although graphite and diamond are both forms of elemental carbon, graphite is slightly more stable at 1 atm pressure and 25°C than diamond is. Given enough time, diamond will revert to graphite under these conditions. HENCE graphite is the STANDARD state of carbon.

Explanation:

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ANSWER:

A free-falling object has an acceleration of 9.8 m/s/s, DOWNWARD (on Earth). ... It is known as the acceleration of GRAVITY - the acceleration for any object MOVING under the SOLE influence of gravity.