Explore topic-wise InterviewSolutions in Current Affairs.

eduction. The BIRCH reduction is an organic reaction where AROMATIC rings undergo a 1,4-reduction to provide unconjugated cyclohexadienes. The reduction is conducted by sodium or LITHIUM METAL in liquid ammonia and in the presence of an alcohol.

arbons,One-Ketone GROUP| and -- are Single Bonds|| is DOUBLE Bondchemical formula - CH3 CO CH3 or C3H6O H H | | H--C--C--C--H | || | H O HThank You

Mendeleev was the first PERSON who the CLASSIFICATION of the element on the BASIS of their atomic masses. He was the first one to give the classification of elements in a FORM of table known Mendeleev periodic table.

ommon Salt = Sodium CHLORIDE = NaClAccording to Law of CONSTANT Proportion, Mass of an element (or its mass percentage) in a particular compound is always constant, no matter how it is prepared.So, by law of constant proportion, mass of chlorine will be constant in every Molecule of the compound NaCl.Now, Let's VERIFY it.1.)ATOMIC Mass of Chlorine = 35.5gAtomic Mass of Sodium = 23gMolar Mass of NaCl = 58.5gPercentage of Chlorine in NaCl:=(Mass of Chlorine)×100/(Total Mass of molecule)=(35.5 ×100)/58 = 61.20% -------- (1)which is approximately EQUAL to 60.75%, which is the given calculated quantity of Chlorine in the given Common Salt .By this, The Law of Constant Proportion is justified.2.)Atomic Mass of Chlorine = 35.5gAtomic Mass of Sodium = 23gMolar Mass of NaCl = 58.5gMass Percentage of Chlorine in NaCl = 61.20% (from Eq 1)Now, the mass of Chlorine present in 6.4g NaCl is:= [(Mass Percentage of Chlorine)/100] × 6.4= (61.20/100)×6.4= 3.9gwhich is approximately equal to 3.888g, the given calculated quantity of Chlorine in common salt.By this, Law of Constant Proportion is justified.Hope this helps :)

ively CHARGED and has a high densityIt is composed of protons (+) and neutrons (no CHARGE). These TWO have a very high density and make up NEARLY all the mass of any SUBSTANCE.

drogen is REACT with metal it gives metal HYDRIDES So, see this 1) K + 2H = KOH

also commonly known as cAMP-dependent protein KINASE, because it has traditionally been thought to be activated through release of the catalytic SUBUNITS when LEVELS of the second messenger cAMP rise in RESPONSE to a variety of signals

ment which has the highest electronegativity is fluorine , ..which has atomic NUMBER 9 with the electronic configuration as 2,7 It BELONGS to group 17 i.e the HALOGENS and period 2 as because it has two SHELL .Hope it helps u mate!!!!

on was PAINTED and not KEPT in contact with OXYGEN then it prevent from rusting.I HOPE it will help u

depends UPON the climate as humid WEATHER can CAUSE the sugar cubes to melt themselves and change shape WHEREAS a normal day might not

rimethylpentane, as the LONGEST carbon CHAIN is 5 and there are three METHYL branches (two on the second carbon and one on the 4th)

eory was PROPOSED by LAMARK

re are n1 moles of HYDROGEN and n2 moles of helium in the given mixture. As PV = nRT Then the pressure of the mixturep=n1RTV+n2RTV=(n1+n2)RTV⇒2×101.3×103 = (n1+n2)×(8.3×300)20×10−3or(n1+n2)=2×101.3×10320×10−3(8.3)(300)or,n1+n2=1.62.....(1)The MASS of the mixture is (in grams)n1×2+n2×4=5⇒(n1+2n2)=2.5....(2)Solving the eqns.(1) and (2), we getn1=0.74 and n2=0.88Hence, H/He==0.74×20/88×4=1.48/3.52=2/5

elength of a SPECTRAL LINE EMITTED by HYDROGEN atom in the lyman series is given by=R[where n=2,3,4,....

now that 1 MOL of hcl contains 1 hydrogen atomSo 2 mol contains 2 hydrogen atomsHere in NH3 1 mol contains 3 hydrogen atomsSo In NH3 no of hydrogen ATOM is more

of MONOVALENT ANION is FINE

’s original method for matching the color of a sample to the color of a standard. Matching the colors was a labor intensive process for the analyst. Not surprisingly, spectroscopic methods of analysis were slow to develop. The 1930s and 1940s saw the introduction of photoelectric transducers for ULTRAVIOLET and visible RADIATION, and thermocouples for infrared radiation. As a result, modern instrumentation for ABSORPTION spectroscopy became routinely available in the 1940s—progress has been rapid ever since.10.3.1 InstrumentationFrequently an analyst must select—from among several instruments of DIFFERENT design—the one instrument best SUITED for a particular analysis. In this section we examine several different instruments for molecular absorption spectroscopy, emphasizing their advantages and limitations. Methods of sample introduction are also covered in this section.

al B because it is highly REACTIVE as it is not in free state but FOUND in COMPOUNDS

are more ELASTIC and less REACTIVE so BECOME shiny for LONG TERM

aCl2 GIVES NaCl+BaSO4BaSO4 is PRECIPITATE formed.Hope It HELPS UH!!

s present which is good OZONE as PROTECT us from UV RADIATION

or pollutants of AIR aresmoke from factory chimneyscarbon MONOXIDE from car emissionscarbon DIOXIDE from burning WOOD.

al hydrogen (H, element 1), nitrogen (N, element 7), oxygen (O, element 8), fluorine (F, element 9), and CHLORINE (Cl, element 17) are all gases at room temperature, and are found as diatomic molecules (H2, N2, O2, F2, Cl2).

your ANSWER that U WANT

is C) 3,3,2 .

are more reactive than Alkanes because alkenes have double covalent BOND and alkanes have single covalent bond.alkenes bond less with HYDROGEN atoms since they have double bond between carbon carbon atom therefore is easily breakable. while alkanes are saturated having their bonds with hydrogen making it DIFFICULT to BREAK their bonds .....therefore alkenes are unsaturated and more reactive than the saturated alkanes

ering from HYPOTHERMIA BODY TEMP LOWS down...hope its HELPFUL...

and nylon 6,6 are 2 commonly used types of nylon. In fact, Nylon 6,6(WIDELY used as fibres) is made from adipic acid and hexamethylene diamine.They have a compact MOLECULAR structure exhibiting excellent ABRASION resistance. Themonomers are joined by hydrogen BONDING.

t is the PARTIAL derivative of the free ENERGY with respect to the amount of the species, all other species' concentrations in the mixture REMAINING constant. ... When both temperature and PRESSURE are held constant, CHEMICAL potential is the partial molar Gibbs free energy.

air pollution refers to chemical, biological and physical contamination of indoor air. It may result in adverse health effects. In developing countries, the MAIN source of indoor air pollution is biomass smoke which contains suspended particulate matter (5PM), nitrogen dioxide (NO2), sulphur dioxide (SO2), carbon monoxide (Ca), FORMALDEHYDE and polycyclic aromatic hydrocarbons (PAHs). In INDUSTRIALIZED countries, in addition to NO2, CO, and formaldehyde, radon, asbestos, mercury, human-made MINERAL fibres, volatile organic compounds, allergens, tobacco smoke, bacteria and viruses are the main contributors to indoor air pollution.HOPE THIS ANSWER HELPS YOU…

culated PH of 0.1 M acetic acid and sodium acetate. ... MEASURED pH of CH3COONa is too low because of the dissolution of CO2.

re THREE STRUCTURAL ISOMERS for pentane. There are FIVE POSSIBLE structural isomers for hexane.

re the SALTS ?

n A- WEAKLY acidicSolution  B- strongly acidicSolution C- strongly basic(*acc. to the QUESTION)Solution D- neutralSolution E- weakly basicRecall that the value of pH is related to the CONCENTRATION of H+ ( H3O+ ) of a substance. pH itself is approximated as the cologarithm or negative logarithm of the  H+ ion concentration

in aqueous SOLUTION each of them would get hydrolysed to their respective bases & the salt that gives the weakest BASE will be the most ACIDIC in aqueous solutionIn that context due to the POSITION in the periodic table ,it should be ALCL3 which will furnish the weakest base Al(OH)3& hence most acidic

rbons in a ROW: CH3CH2CH2CH2CH3Four carbons in a row, with ONE CARBON attached in the middle: CH3CH(CH3)CH2CH3Three carbons in a row, with two carbons attached to the middle carbon: CH3C(CH3)2CH3Hope it helps you ❤️

ng to Fleming's LEFT hand rule, if the thumb, fore-finger and MIDDLE finger of the left hand are STRETCHED to be perpendicular to each other as SHOWN in the illustration at left, and if the fore finger represents the direction of magnetic field, the middle finger represents the direction of current, then the ...

................

. The catalyst in this case is ' NICKEL '.The reaction is ―VEGETABLE OIL + H2———> vegetable ghee( Vanaspati) [in PRESENCE of Nickel]....Please mark as brainliest.....