Explore topic-wise InterviewSolutions in Current Affairs.

Statement-1:Potassium chromate solution in acetic acid precipitates only Ba^(2+) as BaCrO_4 in group V^(th) Statement-2:SrCrO_4 and CaCrO_4 are not precipitated with potassium chromate solution in acetic acid.

Statement-1:Restricted rotation about a bond is the necessary condition for geometrical isomerism. Statement-2:Two different orientations are possible due to restricted rotation about a bond it the end groups are different .

Statement-1:Reddish brown gas, NO_2 when passed through alkaline gives nitrite only. Statement-2:NO_2 is acidic in nature and is a mixed anhydride of nitric acid

Statement 1:Polybutadiene is an example of step-growth polymer. Statement 2: Co[

Statement-1:Polyacylation in benzene does not occur during Friedal Craft's acylation. Statement-2:As the product ketone is much more reactive than starting material.

Statement-1:Pentacetate of glucose does not form oxime on treatment with H_2N-OH Statement-2:Glucose on reaction with acetic anhydride forms pentacetate under suitable conditions.

Statement-1:Phenolphathalein can be used as indicator in the titration of weak acid with NaOH. Statement-2 :Near the end point in the titration of weak acid with NaOH, the pH of the solutions is alkaline due to hydrolysis of anion.

Statement-1:p-type semiconductor are formed due to metal excess defect. Statement-2: F-centres are created due to metal excess defect.

Statement-1:p-Hydroxybenzoic acid has a lower boiling point that o-Hydroxybenzoic acid. Statement-2:o-Hydroxybenzoic acid has intramolecular hydrogen bonding.

Statement-1:NO^+ and CN^(-) both have same order and magnetism (i.e. magnetic property). Statement-2:NO^+ and CN^(-) are isoelectronic species.

Statement-1:NO yellow precipitate is formed when an excess of a more concentrated (6M) solution of Kl. Statement-2:Yellow precipitate of Pbl_2 does not dissolve in excess of dilute solution of Kl.

Statement-1:Methyl alpha-D-fructofuranoside (I) , undergoes acid catalysed hydrolysis at faster rate than that of methyl alpha-D-glucofuranoside (II). Statement-2:The intermediate carbocation in case of I is more stable than in case of II.

Statement-1L The bond angles in molecules depneds upon hybridization electronagativity of central atom, no. of lone pair, odd electron and multiplicity of bond. Statement-2 NO_(2) and NO_(2)^(-) have angles 134^(@) and 115^(@) respectively.

STATEMENT-1:K_(2)CO_(3) cannot be prepared by Solvay's process. and STATEMENT-2: K_(2)CO_(3) does not decompose on heating

Statement-1:In natural tris chelating complex, [Co(acac)_3], in each ring the two M-O bonds are equal in length, as are two C-O and the two C-C bonds because. Statement-2:In each ring resonance take place.

Statement-1:In the electrolytic reduction of Al_(2)O_(3), cryolite lowes the melting point of the mixture and bring conductivity: Statement-2: Cryolite is an ore of aluminium.

Statement-1.If a liquid more volatile than the solvent is added to the solvent, the vapour pressure of the solution may increase, i.e., p_(s)gtp^(@). Statement-2. In the presence of more volatile liquid solute, Raoult's law does not hold good.

Statement-1:Hydrolysis of sucrose brings a change in sign of rotation towards plane polarised light. Statement-2:Fructose has specific rotation -92.4^@ and glucose has +52.5^@

Statement-1:Graphite is used as anode by not diamond. Statement-2: Mobile electrons are present in graphite layer which help in the electrical conductivity.

Statement-1:Finely divided iron does not form ferric chloride with hydrochloric acid. Statement-2:Hydrochloric acid produces hydrogen gas with iron.

Statement-1:Extraction of gold from its native ore involves leaching themetal ore with dilute solution of NaCN in presence of air. Statement-2:This is an oxidation reaction and leads to the formation of a soluble complex.

Statement-1:Ethers are prepared from alcohols in acid medium through S_(N^1) or S_(N^2) mechanisms depending upon nature of alcohol. Statement-2:ROH+H^(+)hArr R-overset(+)OH_2

Statement-1:Dipositive zinc exhibits diamagnetism due to loss of two electrons from 3d-orbital of neutral atom. Statement-2:The electronic configuration of zinc (Z=30) is [Ar]^(18)3d^10 4s^2

Statement-1:Cyclopropane has the highest heat of combustion per methylene group Statement-2:Its potential energy is raised by angle strain.

Statement-1:Compounds having -NR_(3)^(+),-SR_(3)^(+) etc. as leaving groups give Hofmann product in E_(2) elimination. Statement-2: E_(2) elimination is a single step reaction.

Statement-1:Coordination number of cobalt in the complex [Co(en)_(3)]^(3+) is six. Statement-2: Ethylenediamine acts as a bidentate ligand.

Statement-1:Cuprous ion (Cu^+) is colourless whereas cupric ion (Cu^(2+))produce blue colour in solution. Statement-2:Cupros ion Cu^+ has unpaired electrons while cupric ion Cu^(2+) does not .

Statement-1:[Co(en)(NO_(2))_(2)(pn)]^(+) ion exists in four geometrical forms : two are cis and two are trans. Statement-2:en (symmetrical ligand) and pn (unsymmetrical ligand) are etylene diamine and 1, 2-diamino propane repectively forming complex of the type M(A A)(AB)a_(2).

Statement-1:Cast iron is different from pig iron. Statement-2: Cast iron is made by melting pig iron with scrap iron and coke using hot air blast and has about 3% carbon content.

Statement 1:Bromobenzene upon reaction with Br_2//Fe gives 1,4-dibromobenzene as the major product. Statement 2:In bromobenzene , the inductive effect of the bromo group is more dominant than the mesomeric effect in directing the incoming electrophile

Statement-1:Bis(dimethylglyoximato)nickel(II) can show geometrical isomerism. Statement-2:Tetrahedral complexes with chiral structures exhibit optical isomerism.

Statement-1:Benzene and ethene both give reactions with electrophillic reagents. Statement-2:Benzene and ethene both have loosely bound pi electrons, which can be donated to vacant orbital of the electrophilie.

Statement-1:Beryllium resembles aluminium. Statement-2: Charge/radius ratio of Be^(2+) ion is nearly the same as that of the Al^(3+) ion.

Statement-1:Ar C(CH_3)_3+Br_2overset(AlBr_3)toArBr+(CH_3)_2C=CH_2 but ArCH_2CH_3+Br_2overset(AlBr_3)to o,p-BrC_6H_4CH_2CH_3 Statement-2:In the first case ispo substitution takes place in which Br^(o+)displaces (CH_3)_3C^+, a stable cation but removal of CH_3CH_2 required large amount of energy.

Statement-1:Aqueous solution of hydrogen peroxide is kept in glass or metel container containing some urea or phosphoric acid. Statement-2:Urea or phosphoric acid acts asa negative catalyst for the decomposition of hydrogen peroxide.

Statement -1:Aluminothermy is used for extraction of chromium from chromium oxide. Statement-2: Aluminium is reducing agent.

Statement-1:An element has variable equivalent mass. Because Statement-2: The valency of element is variable.

Statement-1:All halogens except F_2 are more reactive than interhalogens. Statement-2: Bond in the interhalogens (X-Y) is weaker than X-X bond in the halogens.

Statement 1:Addition of Br_2 to 1-butene gives two optical isomers. Statement 2:The product contains one asymmetric carbon

Statement-1:Alkanes float on the surface of water Statement-2: Density of alkanes is in the range of 0.6-0.9 g/ml , which is lower than water.

Statement-1:A recemic mixture of 2-chloropropanoic acid is treated with excess of (+)-2-Butanol.The Statement 2: The solution of reaction mixture at time (t=0) , will be dexterorotatory.

Statement-1:A solution containing S^(2-) ions gives purple / violet colour with sodium nitroprusside solution in alkaline solution. Statement-2:Sodium sulphide gives black precipitate with silver nitrate solution.

Statement-1:Aceteldehyde responds positively with all the test of carbonyl compounds like Tollen's Test. Fehling test, 2,4-DNP test, as well as Iodoform test. Statement-2:All aldehydes respond all the four test given in assertion.

STATEMENT-1:2,3- dimethylbut -2-ene decolorize Br_2 water. and Statement-2 : 2,3 - dimethylbut -2-ene is an unsaturated compound.

Statement-1:1,3,5-Trihydroxybenzene reacts with NH_2OH to give oxime derivation where a 1,3-Dihydroxybenzene do not. Statement-2:Former exist in predominantly where as later exists in predominantly no substantial keto form is present which can give oxime derivation.

Statement-1: Zn displaces Ag from thecomplex Na[Ag(CN)_(2)] to give Na_(2)[Zn(CN)_(4)] Statement-2:Zn is more electro positive than silver