Explore topic-wise InterviewSolutions in Current Affairs.

Answer:

THEODOR Schwann

Explanation:

By the late 1830s, botanist Matthias Schleiden and zoologist Theodor Schwann were studying tissues and proposed the unified cell theory. The unified cell theory states that: all living things are COMPOSED of ONE or more cells; the cell is the BASIC unit of life; and NEW cells arise from existing cells.

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ANSWER:

IMMISCIBLE LIQUIDS is your answer

EXPLANATION:

no. of pπpπ BOND = 1

no. of pπdπ bond = 2

Answer:

The total ENERGY of an ELECTRON in the first excited state of hydrogen atom is -3.4 eV.

Explanation:

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Answer:

Cleaning agents or hard-surface cleaners are substances (usually liquids, powders, sprays, or granules) used to remove dirt, including dust, stains, bad SMELLS, and CLUTTER on surfaces.[1] Purposes of cleaning agents include health, beauty, removing offensive odor, and avoiding the spread of dirt and contaminants to oneself and OTHERS. Some cleaning agents can kill bacteria (e.g. DOOR handle bacteria, as well as bacteria on worktops and other metallic surfaces) and clean at the same time. Others, called degreasers, contain organic solvents to help dissolve oils and fats.[2]

Answer:

The SKY APPEARS dark to them as there is no atmosphere in the SPACE that can SCATTER the sunlight.as the sunlight is not scattered no scattered lights REACHES the eyes of the astronaut and the sky appears dark to them

Answer:Trihydroxyglutaric

Explanation:

Trihydroxyglutaric acid (HO2C-CHOH-CHOH-CHOH-CO2H) exists in four stereoisomeric forms, two of which are OPTICALLY acitve while the other are meso-forms. REASON: It contains two asymmeric and one pseudo-asymmeric CARBON atom.

Explanation:

Absolute zero,TEMPERATURE at which a thermodynamic system has the lowest energy. It CORRESPONDS to −273.15 °C on the Celsius temperature SCALE and to −459.67 °F on the FAHRENHEITTEMPERATURE scale.

Answer:

Instead of cutting, you can rub the surface of material with sand PAPER to see if it has LUSTER. Materials that have such luster are USUALLY metals. Iron, copper, aluminium and gold are examples of metals. Some metals often lose their shine and appear dull, because of the action of air and MOISTURE on them.

Explanation:

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EXPLANATION:

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Explanation:

An electrochemical cell consists of TWO half-cells. With an open-circuit, the metal electrode in each half-cell transfers its ions into solution. Thus an individual electrode DEVELOPS a potential with RESPECT to the solution. The potential of a single electrode in a half-cell is called the Single electrode potential.

The electrode potential has its origin in the potential difference developed at the interface between the electrode and the electrolyte. It is common, for INSTANCE, to speak of the electrode potential of the M+/M REDOX couple.

The magnitude of electrode potential depends on the following factors, (i) Nature of the electrode, (ii) Concentration of the ions in solution, (iii) Temperature.

Answer:

Explanation:

The concept of temperature has evolved from the common CONCEPTS of hot and cold. Human perception of what feels hot or cold is a relative one. For example, if you place one hand in hot water and the other in cold water, and then place both hands in tepid water, the tepid water will FEEL cool to the hand that was in hot water, and warm to the one that was in cold water. The scientific definition of temperature is less ambiguous than your senses of hot and cold. Temperature is operationally defined to be what we measure with a thermometer. (Many physical QUANTITIES are defined solely in terms of how they are measured. We shall see later how temperature is related to the kinetic energies of atoms and molecules, a more physical explanation.) Two ACCURATE thermometers, one placed in hot water and the other in cold water, will show the hot water to have a higher temperature. If they are then placed in the tepid water, both will give identical readings (within measurement UNCERTAINTIES). In this section, we discuss temperature, its measurement by thermometers, and its relationship to thermal equilibrium. Again, temperature is the quantity measured by a thermometer.

The metallic structure can be explained as a SEA of electrons floatings around the mesh of positive changed particles… when a Galvanizing cell is created the electrons start flowing depending on the potential creating an environment for OXIDATION REACTION.

It is all there… the potential help with the redox reaction.

yes , it is true ,the ELECTRO MOTIVE FORCE is an INTENSIVE property

Explanation:

All of these is the ANSWER

Because tomatoes CONTAIN CITRIC acid , lemon juice contain citric acid and MILK contain lactic acid

<P>Answer:

The reaction of toluene with Cl2 in PRESENCE of FECL3 gives 'X' and reaction in presence of light gives 'Y'. Thus, 'X' and 'Y' are:

Option 1) X=Benzal CHLORIDE, Y=0-Chlorotoluene Option 2) X=m-Chlorotoluene, Y=p-Chlorotoluene Option 3) X= o- and p - Chlorotoluene, Y= Trichloromethyl - benzene Option 4) X = Benzyl chloride, Y= m - Chlorotoluene

Answers (1)

P Plabita

Answered 2 years, 3 months ago

As we learnt in

Halogenation reaction of haloarene -

1,2 - di chlorobenzene

1,4 - di chlorobenzene is obtained (major)

- wherein

ANSWER:

hi

here

Explanation:

solution D is neutral

solution C is STRONGLY ALKALI.

solution B is strongly acidic.

solution A is weakly acid.

solution E is weakly alkali metals.

C

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Answer:

HI... here is your answer

Explanation:

For any given isotope, the sum of the numbers of PROTONS and NEUTRONS in the nucleus is called the mass number. This is because each PROTON and each neutron weigh one atomic mass unit By adding together the number of protons and neutrons and MULTIPLYING by 1 amu, you can calculate the mass of the atom.

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Explanation:

Magnesium does show similar reactions to IVth group cations; it forms basic magnesium carbonate MgCO3.Mg(OH)2. 5H2O with IVth group REAGENT ammonium carbonate (NH4)2CO3. But this basic magnesium carbonate is SOLUBLE in presence of ammonium SALTS and THEREFORE it doesn't precipitate with IV group cations.

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ANSWER:

LIPID oxidation in foods. Oxidative rancidity, a major cause of FOOD deterioration, leads to food QUALITY degradation and product rejection due to the formation of undesirable aroma and off-flavors, color fading, browning, or color degradation

Answer : a. Metal oxide and hydrogen

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ANSWER:

,

Explanation:

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Chemical FORMULAS are USED to DESCRIBE the TYPES of atoms and their numbers in an element or compound. The atoms of each element are represented by one or two different letters. When more than one atom of a specific element is found in a molecule, a SUBSCRIPT is used to indicate this in the chemical formula.

Answer:

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Gypsum rock is converted into gypsum plaster by driving off some of the chemically combined WATER. Heating gypsum at 120°C for ONE hour RESULTS in a hemi-hydrate (CaSO4. 1⁄2H2O) – with three quarters of the water removed. Gypsum hemi-hydrate is also KNOWN as Plaster of Paris.

Explanation:

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Answer:

FREQUENCY divided by the speed of light is ν/c, which from the above equation is 1/λ. When wavelength is MEASURED in metres, 1/λ represents the number of waves of the wave train to be found in a LENGTH of one METRE or, if measured in centimetres, the number in one CENTIMETRE.

Protons

Representation. p+

Mass. 1 ATOMIC UNIT (au)

Charge +ve

Electrons

Representation. e-

Mass. Negligible

Charge. -ve

Neutrons

Representation. n

Mass. 1 au

Charge. 0 (NEUTRAL)

Answer:

Metals themselves are solid MATERIALS, some HARD, other soft that will act as reducing agents. The metals have unfilled valance electron SHELLS, and and relatively low electronegativity. This means that the METAL atoms would want to lose their OUTER electrons and become a positively charged metal ion.

Answer:

MAS of common SALT (solute)=40 g

Mass of water (soluted) =320 g

mass of solution=320+40

=360 g

CONCENTRATION of solution=

massofsolution

M

mass

ofsolute

×100

360

40

×100=11.11%

Hence, the concentration of the solution is 11.11%

Answer:

so, 20 CM in metres= 20/100m=1/5 metres. power of a LENS= 1/1/1/5=5 DIOPTRES....

EXPLANATION:

Answer:

1,0 ETC is the EXAMPLE of BINARY NUMBERS

Answer:

MASS (solute) = 40 gram

mass (SOLVENT) = 320 gram

mass (soluation) = mass (solute)+ mass (solvent)

= 40 gram + 320 gram

= 360 gram

: mass % (soluation) = [mass (solute)/mass (solvent)] × 100

= [40/360] × 100

11.1%

Explanation:

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Answer:

(a )2p

Explanation:

beause of ELECTRONIC CONFIGURATION of argon is 1s2 2S2 2P6 3S2 3p6

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Answer:

Start from the Lewis structure of the TETRAFLUOROBORATE ion, BrF−4 . The MOLECULE will have a total of 36 valence electrons - 7 from bromine, 7 from each of the four fluorine atoms, and one extra electron to give the ion the -1 CHARGE. ... According to VSEPR Theory, the molecular geometry will be SQUARE planar - AX4E2 .

Answer:

OPTION B is the right ans

Explanation:

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Answer:

The steric number is the number of atoms bonded to a central ATOM of a molecule plus the number of LONE pairs attached to the central atom. The steric number of a molecule is used in VSEPR (valence shell electron pair REPULSION) THEORY to determine the molecular geometry of a molecule.

ANSWER:

When a reactive metal reacts with hydrochloric acid hydrogen GAS is produced A reactive metal displaces the hydrogen from acid and release hydrogen gas.

Explanation:

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98.07848 g mol

The MOLAR mass of SULFURIC acid is 98.07848 g mol.

Explaination:

Multiply each atomic mass by the number of atoms in the formula. ADD up the results of STEP three: 2.015+32.066+63.998 = 98.079 = molar mass of sulfuric acid.

Answer:

17

Explanation:

because it's ATOMIC NUMBER is 17

Answer:

A SOLUTION is a homogeneous mixture of two or more substances.

The PARTICLES of solute in a solution cannot be seen by the naked eye.

A solution does not ALLOW beams of light to scatter.

A solution is stable.

The solute from a solution cannot be separated by FILTRATION (or MECHANICALLY).

Answer:

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Mole fraction is a unit of CONCENTRATION, defined to be equal to the number of moles of a COMPONENT divided by the total number of moles of a SOLUTION.

Because it is a RATIO, mole fraction is a unitless expression.

The mole fraction of all COMPONENTS of a solution, when added together, will equal 1.

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ANSWER:

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Answer:

9

Explanation:

C3H7OH + _o2  gives  _co2  +_h2o

c3h7oh contains 3 c atoms and 8 h atoms.

so the no of CO2 formed will be 3 as there are 3 CARBON atoms

and no of H2O formed will be 4 as there are 8 (4×2)  h atoms

so, c3h7oh  +_o2  gives  3 co2  + 4 h2o

now calculating the no of O atoms on the RHS we get 10

so LHS should contain 10 O atoms

so on calculating

no of O2 will be 9/2

so no of O atoms = 2×(9/2)

                               =9

Answer:

EXPLANATION: RAW materials needed for manufacturing baking soda are:- SODIUM CHLORIDE, WATER, CARBON DIOXIDE and AMMONIA. BALANCED equation:- NaCl + H20 + CO2 + NH3 --> NH4Cl + NaHCO3 . On heating baking soda SODIUM CARBONATE, WATER and CARBON DIOXIDE are produced.

Explanation:

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EXPLANATION:

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Answer:

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Explanation:

Rock salt is also KNOWN as halite. It is different to sea salt because it is already FOUND in a solid form and then MINED. Table salt (refined salt) can also be produced from solid salt which is found underground and then refined to REMOVE any IMPURITIES.

ANSWER:

RATIONAL number is the no. that can be REPRESENTED as quotient p/q of two INTEGERS.

ANSWER:

Good MORNING DREAM

Explanation:

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Answer:

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