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The cryoscopic constant value depends upon the molar mass of the solute in the solution. So, the CORRECT answer is option A. Note- Cryoscopic constant relates the molality in a solution to freezing POINT depression. A known constant can be used, by CRYOSCOPY, to measure an approximate molar mass.

CH4 gives additional REACTION

EXPLANATION:

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Explanation:

Strength of solution

mass of solute

volume of solution in LITRES

Mass of GLUCOSE = 5 g

Volume of solution = 200 ML

= 200 =0.2 L

1000

Strength of solution =

25g/l

C] 32%

Explanation:

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So the VALUE is X =3/2

Reciprocal of denomination

X == 2/3

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igative PROPERTIES are those properties of solutions that depend on the ratio of the number of solute particles to the number of SOLVENT molecules in a solution, and not on the NATURE of the chemical species present. ... Colligative properties include: Relative lowering of vapour pressure.

ong>Answer:

The blue COLOURED copper SULPHATE crystals turns white due to the loss of water molecules. The formula of copper sulphate is CuSO4. 5H2O. When copper sulphate is heated, it LOOSES water molecules and hence it looses blue COLOUR.

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SODIUM nitrate occurs as a HYDRATED salt.

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ong>Answer:

Photoelectric EFFECT can only be explained by the quantum concept of RADIATION. 1) The photocurrent is PROPORTIONAL to the intensity of incident radiation. 2) The magnitude of stopping potential and hence the MAXIMUM kinetic energy of emitted photoelectrons is proportional to the frequency of emitted radiation.

ong>Answer:

As per GAS LAWS

begin mathsize 12px style fraction numerator p SUBSCRIPT 1 v subscript 1 over denominator T subscript 1 end fraction space equals space fraction numerator p subscript 2 v subscript 2 over denominator T subscript 2 end fraction

fraction numerator 95 cross times v 1 over denominator 323 end fraction space equals space fraction numerator 90 cross times 0.8 cross times v 1 over denominator T subscript 2 end fraction

H e n c e space T subscript 2 equals space fraction numerator 90 cross times 0.8 cross times 323 over denominator 95 end fraction space equals space 244.8 space K

end style

Explanation:

Dalton gave the idea of smallest UNIT of MATTER

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Remember, CHEMICAL reactions follow the LAW of conservation of mass. Chemical EQUATIONS show this conservation, or equality, in terms of atoms. The same number of atoms of each element must APPEAR on both sides of a chemical equation.

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ong>Answer:

Distance is a scalar quantity that refers to "how much ground an object has COVERED" during its motion.

DISPLACEMENT is a vector quantity that refers to "how far out of place an object is"; it is the object's overall change in POSITION.

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Sulphur dioxide is a major component of acid rain since it mixes with water vapour in the ATMOSPHERE, reacting to produce sulphuric acid (H2SO4).

Explanation:

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OPTION ( c ) ✔

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ong>Explanation:

Because real PARTICLES do not travel at the speed of light, DE BROGLIE submitted velocity (v) for the speed of light (c). Through the EQUATION λ, de Broglie substituted v/λ for ν and arrived at the final expression that relates wavelength and particle with speed .... so this the answer man okk

. Is the distilled water acidic/BASIC/neutral? How would you verify it?

SOLUTION:

Distilled water is neutral in nature. To verify it, TAKE a SMALL amount of distilled water in two test tubes. Add blue litmus paper to one test tube and red litmus paper to the other test tube. It is observed that there is no change in colour of either blue or red litmus paper which shows distilled water is neither acidic nor basic, hence neutral.

Q 5. Describe the process of neutralisation with the help of an example.

SOLUTION:

Neutralisation is a process in which an acid REACTS with a base to produce salt and water. Take some dilute hydrochloric acid in a test tube and add 2-3 drops of phenolphthalein. The solution will remain colourless. Add to this acidic solution, sodium hydroxide solution with the help of a dropper and shake the test tube after ADDING each drop. The pink colour which appears keeps disappearing on shaking. Stop adding sodium hydroxide drop when the pink colour does not disappear. This is the point where neutralisation reaction has taken place. After this, if you keep on adding sodium hydroxide the solution will remain pink since it is basic in nature.

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ducing agent (reductant), loses electrons and is OXIDIZED in a chemical reaction. ... A REDUCING agent is oxidized because it loses electrons in the REDOX reaction.

HETEROGENEOUS MUST be the answer

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Explanation:

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ong>ANSWER:

HYDROGEN, sulphur DIOXIDE practicl

ALKENES are more soluble in water than ALKANES because the carbon to carbon double bond CONTAINS a pi bond.

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FIND the value of m so that the quadratic EQUATION px^2 + (p – 1) x +(p – 1) = 0 has equal roots.

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RADIATION is the answer

ong>Explanation:

SILICON CONTAINS 6.022 ×102 atoms of silicon.

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ong>Answer:

Endoscopy is typically used to:

help your doctor determine the CAUSE of any abnormal symptoms you’re having

remove a small sample of TISSUE, which can then be sent to a LAB for further testing; this is called an endoscopic biopsy

help your doctor see inside the body during a surgical procedure, such as repairing a stomach ulcer, or removing gallstones or tumors

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ong>Explanation:

ionic---relating to an atom or small group of atoms that has an electrical CHARGE because it has added or lost one or more electrons: ionic bonding. When an ionic solid dissolves in WATER, bonds are formed between water MOLECULES and the ions.

covalent--- type of chemical bond involving the sharing of electrons between atoms in a MOLECULE, esp the sharing of a pair of electrons by TWO adjacent atoms

coordinate bond---A covalent chemical bond between two atoms that is produced when one atom shares a pair of electrons with another atom lacking such a pair.

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Explanation:

Examples of BIOTIC factors INCLUDE any animals, plants, trees, grass, bacteria, moss, or molds that you might find in an ecosystem.

permit process

Explanation:

permutit process is a process in where hard water containing such as ca++ is filtered through a natural sand called the ZEOLITE. calogen is a trade mark of COMPLEX salt ,sodimmetahexaphospate (NapO3)6. calogen ion gives a complex anion.

let X moles of SILICON contains 2.8×10^24 atoms. A/Q, 6.02×10^24 atoms are present in 1 MOLE of silicon . therefore, 2.8×10^24/6.02×10^24=4.65 moles of silicon

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ion c is the right answer.

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ong>ANSWER:

A QUANTUM number is a value that is used when describing the energy levels available to atoms and molecules. An electron in an atom or ion has four quantum numbers to describe its STATE and yield solutions to the Schrödinger WAVE EQUATION for the hydrogen atom.....

ong>Answer:

The heat of EXOTHERMIC reaction is 8520 kj/kg h2o2, whereas the the heat released by SELF decomposition of h2o2 is 1410kj/kg h2o2 ( 96kj/mol)

The enthalphy of decomposition of LIQUID hydrogen PEROXIDE is 96 kJ/mol

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ong>Answer:

0.33 G PER cm³

Explanation:

Given

VOLUME =15cm³

Mass =45g

Density =mass/volume

45g/15cm³=1/3

= 0.33g per cm³